Active filters amplify desired signals while rejecting unwanted frequencies, and can be tailored to meet application-specific requirements in electronics.
Amplifiers boost signal strength, match impedance levels, and are essential in many circuit systems, including audio, broadcasting, and telecommunications.
Batteries store and provide electrical energy, come in various types and sizes for multiple uses, rechargeable or single-use.
Capacitors store electrical charge with metallic plates and a dielectric; types vary and can be combined for specific circuit characteristics.
Chip carriers and sockets provide an interface between components and PCBs, enabling easy replacement or upgrading without soldering.
Circuit protection devices prevent damage from overcurrent flow, including fuses, breakers, surge protectors, and voltage regulators.
Connector accessories and support devices aid connector function and longevity, including backshells, grips, clamps, and ties; must be compatible with connector type.
Connectors join electronic circuits to transfer signals and power, come in various sizes and shapes, and include support accessories.
Converters transform DC input to another voltage level, essential in electronic systems, renewable energy, and automotive electronics.
Crystals and resonators generate and stabilize frequency signals via piezoelectricity. They are used in timing, frequency control, and filters. Crystals are quartz and resonators are ceramic with a built-in capacitor.
Semiconductor diodes control current flow in one direction (uni-directionality) via low resistance. Useful for rectification, voltage regulation, detection, and digital logic.
Discover essential electronic components for your devices, including CPU accelerators, system cache controllers, computer processors, motherboards, and graphics computing systems. Enhance device performance and connectivity with reliable components engineered for seamless integration and optimal functionality.
Fiber optics use light pulses to transmit data over long distances. They have superior bandwidth capacity, low signal attenuation, and secure physical properties. They are essential in telecommunications networks today.
Filters enhance signal processing by selectively passing desired frequencies while suppressing unwanted ones. Filters can be passive (using capacitors, resistors, and inductors) or active (using transistors or amplifiers).
Flash devices are non-volatile storage solutions that offer fast read and write speeds, making them ideal for applications requiring high-speed data transfer. These devices utilize flash memory technology, providing reliable storage for data-intensive tasks such as gaming, multimedia, and enterprise-level applications.
General purpose ICs consist of multiple individual circuits or components (e.g., logic gates, amplifiers, oscillators, etc.) that are combined onto a single integrated circuit chip for a smaller physical footprint.
I/O and storage controllers are crucial components in computer systems, managing input/output operations and storage devices. These controllers facilitate efficient data transfer between peripherals, storage drives, and the central processing unit (CPU), enhancing system performance and enabling seamless connectivity.
Inductors store energy in magnetic fields, oppose sudden changes in current flow and prevent electrical surges. Common inductor applications include power supplies, signal filters, and oscillators.
Interface ICs allow efficient device connectivity with high-speed data transfer and low power consumption.They can be ASIC or FPGA types, and may perform additional functions such as sensing, storage, and conversion.
Logic ICs can be used for storage, memory, amplification, and multiplexing. They perform fundamental logical operations on digital input signals (1, 0, H, L) to generate a corresponding digital output signal.
Memory modules are essential components in electronic devices, storing data temporarily or permanently for processing and retrieval. From volatile RAM (Random Access Memory) to non-volatile ROM (Read-Only Memory), memory technologies vary in speed, capacity, and functionality, catering to diverse application requirements.
Memory ICs store digital data and retain the information even when the power is turned off. They come in various types, like RAM (Random Access Memory) for fast data access, and ROM (Read-Only Memory) for permanent data storage.
Miscellaneous semiconductor components are a diverse category of electronic components that combines elements from a mix of component devices.
Optoelectronic devices interact with light. This family of devices can emit light, detect light, generate current, and transmit light signals for long-distance communication.
Oscillators generate repetitive waveforms, such as sine, square, or triangle waves. They are commonly used to produce stable and precise frequencies for applications like clocks, signal generation, and communication systems.
Other Function Semiconductor components are a diverse category of semiconductor components that perform a range of specialized functions.
Passive component networks operate without a power source and support data transmission within system by performing filtering, energy storage, and/or signal coupling functions.
Peripheral ICs (Integrated Circuits) are designed to control and manage the peripheral devices connected to a computer or other electronic device.
Programmable Logic ICs are user-programmable devices that allow designers to create custom logic circuits. These cost saving ICs offer real-time data processing and maximum design flexibilty.
RF (Radio Frequency) and microwave devices are used in telecommunications, wireless communications, and electronic systems. These devices include amplifiers, attenuators, filters, mixers, oscillators, and antennas, and a host of other components.
Voltage regulators are used to ensure a constant output voltage despite power fluctuations and load changes. Linear and switching regulators are common types used to maintain voltage stability.
Relays are electromagnetic switches that are used to control the flow of electrical current in an electrical circuit. Relays are a safe means of providing isolation between a controlling circuit and a controlled circuit.
Resistors control the flow of electrical current in a circuit by introducing a set resistance. These passive components reduce current flow, adjust signal levels, and bias active elements in circuits.
Transducers convert energy from one form to another and are crucial in sensing, audio and control systems. They transform physical measures like temperature, pressure, or sound into electrical signals for circuits.
Storage drives are hardware devices used to store and retrieve digital data in computers and electronic devices. These drives come in various forms, including hard disk drives (HDDs), solid-state drives (SSDs), and hybrid drives, offering different levels of capacity, speed, and durability to suit specific storage needs.
Storage media encompass physical or digital mediums used for storing and preserving digital data. From optical discs and magnetic tapes to USB flash drives and memory cards, storage media come in diverse formats and capacities, offering flexibility and reliability for data storage and archival purposes.
Storage systems comprise hardware and software components designed to manage and store digital data efficiently. These systems range from simple standalone devices to complex network-attached storage (NAS) and storage area network (SAN) solutions, providing scalable storage capacity and data protection features for businesses and enterprises.
Switches control electrical current flow by making or breaking connections. These devices vary in design and application, from basic on/off switches to complex industrial automation systems.
Telecom integrated circuits (ICs) are specialized electronics for telecommunications, tailored to high data rates, low power use, and reliable long-distance transmission. These devices include amplifiers, filters, ADCs, DACs, and more-- and they are often integrated on one chip for specific telecom tasks.
Terminal blocks, or connection terminals, are modular blocks that bring together multiple electrical wires at one connection point. They offer a reliable, organized way to terminate cables.
Thermal management devices control heat in electronic systems, preventing overheating and ensuring optimal performance and reliability. Examples include heat sinks, fans, and thermal interface materials that dissipate or transfer heat away from components.
Transformers are devices that alter electrical voltage levels between circuits through electromagnetic induction. They are vital in power distribution, converting high-voltage electricity for transmission and lower voltage for safe usage.
Transistors are 3-layer semiconductor devices that regulate the flow of electrical current. They function as amplifiers, boosting weak signals, and as switches, controlling the flow of current between terminals.
Triggering devices initiate electronic processes or events in response to specific conditions. These devices support many automated tasks such as activating switches and signals, or turning on lights when motion is detected.
Video cards, also known as graphics cards or GPU (Graphics Processing Unit), are essential components in computers, responsible for rendering graphics and images on display devices. These cards feature dedicated processors and memory, delivering smooth and immersive visual experiences for gaming, multimedia, and professional applications.
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L3121B by STMicroelectronics is a surge protection IC designed for telecom applications. It operates b/w -40 °C and 85°C, features a compact 4-terminal in-line package, and has a terminal pitch of 2.54 mm. Ideal for industrial environments, it ensures reliable circuit protection.
Median Price
$1.406
Lifecycle Status
Suppliers In-Stock
10
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1k+
Vyrian
1+ parts
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100+ parts
1k+ parts
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Anansix
Digiode
ACDS - Activité Composants Distribution Service
J2 Sourcing AB
Corel Iberica Componentes, S.L.
Bristol Electronics
Microfarads
ECAB
Prism Electronics
IDEA Electronic Components Group
$10.578
$9.520
MKK Technologies
$19.892
DigiPath Technology Company
Authorized Procurement Solutions
Corphita
Parana Technologies
$12.648
Assy Fe
Perfect Parts
RC Electronics
The use of plastic/epoxy material ensures durability and resistance to environmental factors, making this protection IC suitable for various applications.
The rectangular shape optimizes space efficiency on PCBs, allowing for easier integration into compact designs.
With four terminals, this IC provides adequate connectivity for robust surge protection without over-complicating the design.
The in-line package style allows for simple and direct mounting on circuit boards, enhancing manufacturing efficiency.
A maximum operating temperature of 85 °C ensures reliable performance in high-temperature environments typically encountered in telecom applications.
The ability to function down to -40 °C makes this IC suitable for use in harsh environments, offering versatility across a range of conditions.
Tin-lead finish provides excellent solderability and enhances the reliability of the solder joints in critical telecom applications.
Single terminal position simplifies the PCB layout and design, making it easier to implement in various configurations.
A maximum seated height of 10.5 mm allows for compatibility with low-profile designs while ensuring effective heat dissipation.
The compact width of 3.305 mm is ideal for space-constrained applications, facilitating integration into high-density designs.
Being rated for industrial temperatures means this product is designed for reliability in demanding long-term operations.
Through-hole terminals provide strong mechanical support and are advantageous for high-stress applications, ensuring durability.
As a surge protection circuit, this IC is essential for safeguarding sensitive telecom equipment against voltage spikes, enhancing system longevity.
A terminal pitch of 2.54 mm ensures compatibility with standard PCB layouts, making it easier for designers to incorporate into existing systems.
Telecom - Protection ICs L3121B attributes and parameters. Explore more Telecom - Protection ICs devices from STMicroelectronics
JESD-30 Code:
JESD-609 Code:
No. of Functions:
No. of Terminals:
Maximum Operating Temperature:
Minimum Operating Temperature:
Package Body Material:
Package Code:
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Package Style (Meter):
Qualification:
Maximum Seated Height:
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Telecom IC Type:
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L3121B Telecommunications trade compliance attributes, and parameters.
HTS
8542.39.00.01
SB
8542.39.00.00
STMicroelectronics is a global leader in the semiconductor manufacturing industry, with over 35 years of experience providing innovative and advanced technologies for customers around the world. Headquartered in Netherlands, STMicroelectronics has more than 51,323 employees worldwide and operates across 32 countries all over Europe, Asia-Pacific and the Americas. The company’s portfolio includes integrated circuits, discrete components, application-specific standard products, and computer chipsets. STMicroelectronics serves a wide range of industries such as automotive, consumer markets, healthcare and industrial applications.
President, CEO
Jean-Marc Chery
President, CFO, Finance, Purchasing,Enterprise Risk Management & Resilience
Lorenzo Grandi
President, Sales & Marketing
Jerome Roux
Castelletto
Fabrication
Fab Initiation
1968
Italy
Wafer Capacity
SGFAB AMK 6
2000
Singapore
29,000
AG200
Agrate Brianza
14,000
RST 8
France
Rousset
35,000
Crolles 1
1993
Crolles
30,000
Crolles 2-ext. mod 5
Crolles 2-ext. mod 2
2022
Crolles 2-ext. mod 3
2023
Crolles 2
2004
28,000
1985
SiC Fab
2006
Sweden
Norrköping
10,000
Fab 3
2005
Tours
2,000
Fab 1 & Fab 2
1978
55,000
Fab 2
1997
Catania
SGFAB-AMK 6E
2003
145,000
SGFAB-AMJ 9
1984
152,000
AG300 (R3)
1980
25,000
1987
34,000
AG300
2024
Crolles 2-ext. mod 1
2020
Fab 1 6-inch fab
2013
11,000
SiC 6-inch line
2021
2,500
200mm GaN
2018
SGFAB-AMK 8
2001
Crolles 2- JV Fab
SGFAB-AMK 6
2016
38,125
SGFAB-AMK 2E
2010
20,000
Silicon Carbide A.B.
SiC wafer/EPI Fab
SiC Device Fab
2025
LM317T
Comset Semiconductors
Other Regulators; No. of Terminals: 3; Terminal Pitch: 2.54 mm; Minimum Output Voltage-1: 1.2 V; Technology: BIPOLAR; Operating Temperature (TJ-Max): 125 Cel;
SMBJ18CA
Multicomp Pro
TRANS VOLTAGE SUPPRESSOR DIODE; Surface Mount: YES; Diode Element Material: SILICON; Technology: AVALANCHE; Maximum Repetitive Peak Reverse Voltage: 18 V; Nominal Breakdown Voltage: 21.05 V;
1N4148WS
Jiangsu Changjiang Electronics Technology
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
CRG0805F10R
Tyco Electronics Components
FIXED RESISTOR; Mounting Type: SURFACE MOUNT; Resistance: 10 ohm; Rated Power Dissipation (P): .125 W; Maximum Operating Temperature: 125 Cel; Tolerance: 1 %;
1N4148
Eic Semiconductor
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
SMMBT3904LT1G
Onsemi
SMMBT3904LT1G by Onsemi is a NPN BJT with 3 terminals, 0.3W power dissipation, and 40V max collector-emitter voltage. Ideal for small outline applications requiring a transistor with hFE of at least 30, it operates up to 150°C and has a transition frequency of 300MHz.
Jiangsu Jiejie Microelectronics
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
2N7002
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Power Dissipation (Abs): .35 W; Operating Mode: ENHANCEMENT MODE; Transistor Application: SWITCHING;
STM32H743ZIT6
STMicroelectronics
STM32H743ZIT6 by STMicroelectronics is a 32-bit microcontroller with integrated cache and a max supply voltage of 3.6V. It is commonly used in industrial applications, offering features such as 21 timers, CAN and USB connectivity, and low power mode.
IRLML6401TRPBF
International Rectifier
P-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Power Dissipation (Abs): 1.3 W; Minimum Operating Temperature: -55 Cel; Avalanche Energy Rating (EAS): 33 mJ;
BSS138BKW,115
Nexperia
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Terminal Finish: TIN; No. of Terminals: 3; Additional Features: LOGIC LEVEL COMPATIBLE;
LM358MX
Fairchild Semiconductor
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: GULL WING; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR;
Rochester Electronics
LM555CM
National Semiconductor
PULSE; RECTANGULAR; Temperature Grade: COMMERCIAL; No. of Terminals: 8; Package Code: SOP; Package Shape: RECTANGULAR; Surface Mount: YES;
SS14
Hy Electronic
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
LM358AN
NXP Semiconductors
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: THROUGH-HOLE; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR;
ULN2803A
NPN; Configuration: 8 BANKS, DARLINGTON WITH BUILT-IN DIODE AND RESISTOR; Surface Mount: NO; Maximum Collector Current (IC): .5 A; No. of Elements: 8; Minimum DC Current Gain (hFE): 1000;
Littelfuse
M24308/2-1F
Tyco Electronics Amp
D SUBMINIATURE CONNECTOR; Option: GENERAL PURPOSE; Contact Gender: FEMALE; IEC Conformity: NO; Mixed Contacts: NO; Empty Shell: NO;
BAV99
ROHM
RECTIFIER DIODE; Terminal Position: DUAL; Terminal Form: GULL WING; No. of Terminals: 3; Surface Mount: YES; Package Shape: RECTANGULAR;
CG33.0
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; Terminal Form: UNSPECIFIED; No. of Terminals: 2; Package Shape: ROUND; JESD-30 Code: O-CXSS-X2;
2057-23-BLF
Bourns
Bourns 2057-23-BLF is a surge protection circuit for telecom applications. With an operating temperature range of -40 to 90°C, it features a round package shape with wire terminals. Ideal for industrial-grade telecom systems requiring reliable overvoltage protection.
CG75LSNLTE
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; No. of Terminals: 2; No. of Functions: 1; Qualification: Not Qualified; JESD-609 Code: e3;
SMP80MC-140
SMP80MC-140 by STMicroelectronics is a surge protection circuit designed for telecom applications. It features a compact rectangular package with 2 terminals, measuring 4.325 mm x 3.625 mm and withstands peak reflow temps of up to 260 °C. Ideal for safeguarding sensitive electronics from voltage spikes.
CG5600MS
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; Terminal Form: NO LEAD; No. of Terminals: 2; Package Shape: ROUND; Minimum Operating Temperature: -40 Cel;
TISPPBL1DR
Texas Instruments
TISPPBL1DR by Texas Instruments is a Telecom Surge Protection IC with 8 terminals, operating temperature range of -40 to 85°C. Its small outline package style and gull wing terminal form make it suitable for telecom applications requiring protection against surges.
SG75
SG75 by Littelfuse is a telecom IC with gas discharge tube suppressor. It features ceramic, metal-sealed cofired body material and small outline package style. Ideal for telecom applications, it operates b/w -40 to 90°C with dual terminals in a compact rectangular shape.
CG21000MSSNLSTR
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; No. of Terminals: 2; Terminal Finish: TIN; Qualification: Not Qualified; JESD-609 Code: e3;
CG32.5LTR
CG32.5LTR by Littelfuse is a telecom protection IC with a ceramic, metal-sealed cofired body and round shape. It operates b/w -40°C to 90°C, has dual tin terminals, and is an industrial-grade gas discharge tube suppressor. Ideal for safeguarding telecom equipment from voltage surges in harsh environments.
CG90L
CG90L by Littelfuse is a gas discharge tube suppressor for telecom applications. With a max operating temperature of 90°C and min of -40°C, it has dual wire terminals in a special round package shape. Ideal for protecting telecom equipment from voltage surges.
SL1002A075SM
SL1002A075SM by Littelfuse is a telecom IC with gas discharge tube suppressor type. It operates in industrial temperature range from -40°C to 90°C, featuring surface mount design with 2 terminals and tin finish. Ideal for protecting telecom equipment against voltage surges.
GTCA26-401M-R05
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; Terminal Form: WIRE; No. of Terminals: 2; Package Shape: ROUND; Package Style (Meter): SPECIAL SHAPE;
GTCA28-401M-R10
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; Terminal Form: WIRE; No. of Terminals: 2; Package Shape: ROUND; Terminal Position: DUAL;
GTCA28-272L-R03
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; Terminal Form: UNSPECIFIED; No. of Terminals: 2; Package Shape: ROUND; Terminal Finish: TIN;
CG2230MSSNLTR
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; No. of Terminals: 2; Maximum Operating Temperature: 90 Cel; Qualification: Not Qualified; Minimum Operating Temperature: -40 Cel;
CG21000LSSN
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; No. of Terminals: 2; Maximum Operating Temperature: 90 Cel; Qualification: Not Qualified; Terminal Finish: TIN;
MAX4971EWC+T
Maxim Integrated
SURGE PROTECTION CIRCUIT; Temperature Grade: INDUSTRIAL; Terminal Form: BALL; No. of Terminals: 12; Package Code: VFBGA; Package Shape: RECTANGULAR;
TISP61089P
TISP61089P by Texas Instruments is a surge protection circuit for telecom applications. With 8 terminals, it has an industrial temperature grade of -40 to 85°C. The rectangular package style with through-hole terminals measures 7.62mm in width and 5.08mm in height.
GTCA26-421M-R05
GAS DISCHARGE TUBE SUPPRESSOR; Temperature Grade: INDUSTRIAL; Terminal Form: WIRE; No. of Terminals: 2; Package Shape: ROUND; Maximum Operating Temperature: 90 Cel;
MAX4971EWC+
SURGE PROTECTION CIRCUIT; Terminal Finish: TIN SILVER COPPER; Moisture Sensitivity Level (MSL): 1; JESD-609 Code: e1; Maximum Time At Peak Reflow Temperature (s): 30; Peak Reflow Temperature (C): 260;
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