My Inquiry
My Account
Taiwan Semiconductor Corporation SMCJ100A
- Part No.:
- SMCJ100A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ100A.pdf
- Description:
- TVS DIODE 100VWM 162VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,568
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ100A from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 100V working stand-off voltage (VWM), 111–123V breakdown voltage (VBR), and 162V maximum clamping voltage (VC) at 9.7A peak pulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMCJ100A datasheet, SMCJ100A pinout, SMCJ100A application, or SMCJ100A equivalent, this page delivers verified electrical specs, thermal performance, clamping behavior under 10/1000μs surge, polarity marking, and direct alternatives for ESD and inductive switching protection in 12V/24V/48V systems.
Technical Context
The SMCJ100A uses a glass-passivated silicon junction optimized for fast response (<1.0 ps rise to VBR) and low leakage (<1 μA at 100V). Its unidirectional configuration enables asymmetric clamping-forward conduction only during reverse overvoltage events-making it suitable for DC supply line protection where polarity is fixed.
Thermally, it features RθJA = 55°C/W and RθJC = 10°C/W, supporting 5W steady-state dissipation at 25°C ambient. The device operates across –55°C to +150°C junction temperature and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12V/24V/48V systems |
| VBR min/max | 111 V / 123 V @ 1 mA - Verified breakdown threshold ensures predictable turn-on during transients exceeding VWM |
| VC @ IPPM | 162 V @ 9.7 A - Clamping voltage limits downstream IC stress during 10/1000μs surges per IEC 61000-4-5 |
| PPK | 1500 W - Peak pulse power rating supports single-event surge immunity up to ISO 7637-2 Pulse 5a (load dump) |
| IR @ VWM | <1 μA - Negligible leakage preserves battery life in always-on automotive modules |
| TJ max | +150 °C - Enables placement near hot components like power MOSFETs or DC-DC converters |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking on one end; matte tin-plated leads compliant with J-STD-002 solderability and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Connected to protected circuit ground or low-side return path | Completes clamping loop during reverse overvoltage; must be routed with minimal inductance to avoid voltage overshoot |
| Cathode | Connected to protected supply rail (e.g., +12V, +24V) | Acts as high-impedance node until VBR exceeded; marked by band for unidirectional orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and humidity exposure; eliminates need for conformal coating in humid environments |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) in automotive ECUs |
| Fast response time | <1.0 ps from 0 V to VBR - Clamps before sensitive logic or analog circuits experience overvoltage damage |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing and end-of-life recycling |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from load-dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12V supply and ground, clamping surges within 10/1000μs waveform envelope. Use Value: Limits peak rail voltage to ≤162V, preventing latch-up or gate oxide rupture in 3.3V/5V logic powered from local LDOs. | Use Scenario: Shields 24V digital input optocoupler front-end from inductive kickback when solenoid valves switch off. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing energy from 100–200A 8.3ms half-sine surges without degradation. Use Value: Eliminates need for external RC snubbers while maintaining <1μA leakage to preserve input threshold accuracy. |
| LED Streetlight Driver | 48V Telecom Power Supply |
Use Scenario: Guards constant-current LED driver ICs against lightning-induced surges coupled through AC mains or long DC feeder lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48V bus, coordinated with MOV and fuse for staged protection. Use Value: 1500W PPK rating handles multi-kA induced transients; 162V VC ensures downstream buck controller remains within absolute max ratings. | Use Scenario: Secures 48V backplane inputs of telecom shelf controllers against EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: Fast-response TVS on primary DC input, placed upstream of DC-DC converters and PMICs. Use Value: Sub-1ps response prevents EFT edge rates from propagating; <1μA IR avoids loading precision voltage references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100A | 600W PPK rating, same VWM/VBR/VC but lower IPPM (4.8A vs. 9.7A); SMB package (smaller footprint, higher RθJA) | Lower surge capacity suits consumer-grade 12V systems; not recommended for automotive load-dump or industrial 24V+ rails | Select SMCJ100A when 1500W surge immunity and DO-214AB thermal robustness are required. |
| 1.5KE100A | Through-hole TO-204AA (DO-41) package; identical VWM/VBR/VC specs but 1500W rating achieved with larger thermal mass and slower response (~1ns) | Requires PCB real estate and wave-solder process; unsuitable for high-density SMT layouts or automated placement | Choose SMCJ100A for SMT scalability, automated assembly, and faster clamping in space-constrained designs. |
Compared with SMBJ100A and 1.5KE100A, the SMCJ100A delivers superior surge handling in compact SMT form factor with sub-picosecond response-critical for protecting modern low-voltage ICs in automotive and industrial control systems.
Availability
SMCJ100A is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, LED lighting drivers, and 48V telecom power supplies requiring stable component supply and full traceability.
Supply support for SMCJ100A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The SMCJ series belongs to TSC's high-power transient suppression product line, engineered specifically for automotive-grade reliability, ISO 7637-2 compliance, and robust operation in harsh industrial environments.
FAQ
What is the clamping voltage of the SMCJ100A under standard test conditions?
The SMCJ100A has a maximum clamping voltage (VC) of 162 V at 9.7 A peak pulse current (IPPM), measured using the 10/1000 μs double-exponential surge waveform per IEC 61000-4-5. This value ensures downstream components see no more than 162 V during worst-case transients, preserving safety margins for 100V-rated capacitors and 150V MOSFETs. The SMCJ100A achieves this with consistent performance across its full operating temperature range.
Is the SMCJ100A unidirectional or bidirectional, and how is polarity identified?
The SMCJ100A is a unidirectional TVS diode, designed for DC supply line protection where polarity is fixed. Polarity is identified by a cathode band marked on the DO-214AB (SMC) package body-this band must be oriented toward the positive rail (e.g., +12V, +24V) during layout. Bidirectional variants use "CA" suffix (e.g., SMCJ100CA); the SMCJ100A does not conduct in forward bias beyond typical diode VF (~5.0 V).
Does the SMCJ100A meet automotive transient immunity standards?
Yes, the SMCJ100A meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), validated per manufacturer testing. Its 1500W peak power rating and 162V clamping voltage enable compliance with OEM-level surge specifications for body control modules, infotainment power supplies, and ADAS sensor interfaces-provided layout follows low-inductance grounding practices.
What is the maximum steady-state power dissipation for the SMCJ100A at room temperature?
The SMCJ100A has a steady-state power dissipation (PD) rating of 5 W at TA = 25°C, derived from its thermal resistance (RθJA = 55°C/W) and maximum junction temperature (TJMAX = 150°C). This rating applies only to continuous DC leakage or low-frequency ripple-not transient events. In practice, PD is rarely approached since reverse leakage remains below 1 μA at 100V, making self-heating negligible in normal operation.
Can the SMCJ100A be used in place of the SMCJ100 without modification?
No-the SMCJ100A offers tighter VBR tolerance (111–123 V vs. 111–136 V for SMCJ100) and lower clamping voltage (162 V vs. 179 V), resulting in improved protection margin for sensitive loads. While both share DO-214AB packaging and pinout, the SMCJ100A's enhanced parameters make it preferable for new designs; legacy SMCJ100 designs may require validation due to the 17V clamping difference under identical surge conditions.
SMCJ100A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ100A FAQ
1.How can I place an order for SMCJ100A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ100A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMCJ100A reliable?
The price and inventory of SMCJ100A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ100A is usually 5 days.
3.What payment methods are accepted for SMCJ100A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ100A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ100A?
SMCJ100A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ100A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMCJ100A?
For technical support, including SMCJ100A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ100A requirements.
6.How does Aetrix verify that SMCJ100A is sourced from the original manufacturer or authorized distributors?
All SMCJ100A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMCJ100A meets industry standards.
7.What is the process for return or replacement of SMCJ100A?
All SMCJ100A units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ100A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMCJ100A part is unused and in its original packaging.
Return procedure for SMCJ100A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ100A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
