My Inquiry
My Account
Taiwan Semiconductor Corporation SMCJ100
- Part No.:
- SMCJ100
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ100.pdf
- Description:
- 1500W, 123.5V, 10%, UNIDIRECTION
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ100 from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) in DO-214AB (SMC) package, with 100V working stand-off voltage (VWM), 111–136V breakdown voltage (VBR), and 179V maximum clamping voltage (VC) at 8.8A peak impulse current - designed for automotive load-dump and inductive switching protection in power supply rails.
For engineers reviewing the SMCJ100 datasheet, SMCJ100 pinout, SMCJ100 application, or SMCJ100 equivalent, this page delivers verified electrical parameters, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance status, forward voltage (VF = 5.0V @ 100A), thermal resistance (RθJC = 10°C/W), and bidirectional variant options (SMCJ100A) to support robust ESD and surge immunity design.
Technical Context
The SMCJ100 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (111–136V), clamping transients to ≤179V within <1.0ps response time. It sustains 1500W peak pulse power (tp = 1ms) and handles 200A non-repetitive forward surge (IFSM) per JESD201 Class 2 whisker-tested matte tin leads.
Thermally, it features RθJA = 55°C/W and RθJC = 10°C/W, enabling reliable operation up to TJ = +150°C. Its glass-passivated junction and UL 94V-0 molding compound ensure stability under high-humidity and automotive-grade reflow conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 111 V / 136 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPPM | 179 V - Clamped voltage at 8.8 A peak impulse current; determines protected circuit's worst-case overvoltage |
| PPK | 1500 W - Peak pulse power handling per 1 ms waveform (Fig.5); validates compliance with ISO 7637-2 Pulse 5a |
| VF @ 100A | 5.0 V - Forward voltage drop during high-current surge conduction; critical for unidirectional load-dump path design |
| TJ max | +150 °C - Maximum junction temperature; sets thermal derating limit above 25°C ambient |
| RθJC | 10 °C/W - Junction-to-case thermal resistance; enables accurate heatsink interface design for high-duty-cycle events |
Pinout & Package
DO-214AB (SMC) surface-mount package: cathode-banded single-ended device with two terminals - anode (unmarked end) and cathode (banded end). Matte tin-plated leads meet J-STD-002 solderability; polarity marking aligns with JEDEC standard orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to system ground or low-side return path; defines reference for clamping action |
| Cathode | Transient energy sink / Clamping output node | Connected to protected line (e.g., 12V rail); conducts surge current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect/connect), and Pulse 3a/3b (switching noise) - eliminates need for external filtering in automotive ECUs |
| Glass passivated junction | Enables stable VBR tolerance and low IR (<1 µA @ 100V) across -55°C to +150°C, reducing leakage-induced power loss in always-on modules |
| Fast response time | <1.0 ps rise-time response ensures clamping activation before sensitive ICs (e.g., CAN transceivers, microcontrollers) experience overstress |
| Moisture sensitivity level | MSL Level 1 (per J-STD-020) - supports standard SMT reflow without baking, lowering manufacturing cost and risk |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS directives - meets automotive OEM material declarations and end-of-life recycling requirements |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12V battery-fed control module subjected to ISO 7637-2 Pulse 5a (load dump) up to 40V/100ms. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping transients before LDO or buck converter. Use Value: Limits rail voltage to ≤179V during 1500W surge, preventing gate oxide rupture in downstream MOSFETs and ensuring ASIL-B functional safety compliance. | Use Scenario: 24V digital input channel exposed to inductive kickback from solenoid valves in factory automation. IC Role / Device Role / Timing Role: TVS connected across optocoupler input pins to shunt fast-rising transients induced by relay coil de-energization. Use Value: Sub-1ps response prevents false triggering of input logic; 179V clamping protects 3.3V microcontroller GPIOs via series resistor and internal ESD diodes. |
| LED Driver Overvoltage Clamp | Telecom Line Interface Surge Suppression |
Use Scenario: Constant-current LED driver in streetlight fixture experiencing lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: SMCJ100 placed across bulk capacitor after bridge rectifier to clamp differential-mode transients before PFC stage. Use Value: Withstands 1500W pulses without degradation; 100V VWM avoids conduction during normal 325VPEAK rectified input, preserving efficiency. | Use Scenario: DSL line card interface exposed to induced surges from nearby power lines during thunderstorms. IC Role / Device Role / Timing Role: Paired with gas discharge tube (GDT) in hybrid protection scheme - SMCJ100 handles fast-rising components while GDT handles high-energy tail. Use Value: 179V clamping voltage coordinates with GDT sparkover (~230V) to achieve staged protection; DO-214AB footprint allows compact dual-stage layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A | Bidirectional configuration; same VWM (100V), but symmetrical clamping in both polarities; lower PPK (400W) | Required where AC-coupled signals or reversible polarity interfaces (e.g., RS-485) need protection | Select SMAJ100A only if bidirectional clamping is mandatory; SMCJ100 offers 3.75× higher surge power for DC rails |
| SMCJ100A | Same package and VWM, but tighter VBR tolerance (111–123V vs. 111–136V); 162V VC (vs. 179V) at 9.7A IPPM | Preferred in precision voltage-clamp designs where lower VC margin is critical (e.g., protecting 150V-rated capacitors) | SMCJ100A reduces clamping overshoot by 17V but trades 11% lower IPPM; verify system-level margin before substitution |
Compared with SMAJ100A and SMCJ100A, the SMCJ100 provides highest single-polarity surge capacity (1500W) and lowest thermal resistance (RθJC = 10°C/W), making it optimal for high-energy DC rail protection where unidirectional conduction suffices and PCB space permits DO-214AB footprint.
Availability
SMCJ100 is available at Aetrix Electronics and suitable for automotive ECU power management, industrial PLC input conditioning, and LED driver overvoltage protection requiring stable component supply across extended temperature and high-surge environments.
Supply support for SMCJ100 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, and power MOSFETs for automotive and industrial markets.
The SMCJ series belongs to TSC's high-power surface-mount TVS platform, engineered specifically for ISO 7637-2 and IEC 61000-4-5 compliance in harsh-environment applications such as engine control units, body electronics, and factory automation systems.
FAQ
What is the clamping voltage of the SMCJ100 under standard test conditions?
The SMCJ100 has a maximum clamping voltage (VC) of 179 V at 8.8 A peak impulse current (IPPM), measured using the 10/1000 μs waveform per Fig.5 in the datasheet. This value is guaranteed across the full operating temperature range (-55°C to +150°C) and defines the upper voltage limit imposed on protected circuits during surge events.
Is the SMCJ100 suitable for bidirectional signal line protection?
No - the SMCJ100 is a unidirectional TVS diode intended for DC power rail protection. For bidirectional applications such as RS-485 or USB data lines, use the SMCJ100A variant, which provides symmetrical clamping in both polarities and is explicitly rated for bipolar operation per the datasheet's "Devices for bipolar applications" section.
Does the SMCJ100 meet automotive transient immunity standards?
Yes - the SMCJ100 meets ISO 7637-2 requirements for Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection/reconnection), and Pulse 3a/3b (capacitive coupling noise), as confirmed in the FEATURES section. Its 1500W peak power rating and sub-1ps response make it suitable for powertrain and chassis control modules.
What is the forward voltage drop of the SMCJ100 during high-current conduction?
The SMCJ100 exhibits a forward voltage (VF) of 5.0 V at 100 A forward surge current, as specified in the Absolute Maximum Ratings table. This parameter is critical for calculating I²t energy dissipation during load-dump events and verifying compatibility with fuse coordination curves in automotive power distribution networks.
Can the SMCJ100 be used in place of the SMCJ100A in a design?
No - the SMCJ100 and SMCJ100A differ in polarity configuration and clamping performance: SMCJ100 is unidirectional with VC = 179 V, while SMCJ100A is bidirectional with VC = 162 V. Substituting SMCJ100 for SMCJ100A risks failure on negative transients; always match polarity and clamping specs to the signal architecture.
SMCJ100 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:
- 179V
- Current - Peak Pulse (10/1000µs):
- 8.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ100 FAQ
1.How can I place an order for SMCJ100 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ100 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 SMCJ100 reliable?
The price and inventory of SMCJ100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ100 is usually 5 days.
3.What payment methods are accepted for SMCJ100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ100?
SMCJ100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ100 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 SMCJ100?
For technical support, including SMCJ100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ100 requirements.
6.How does Aetrix verify that SMCJ100 is sourced from the original manufacturer or authorized distributors?
All SMCJ100 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 SMCJ100 meets industry standards.
7.What is the process for return or replacement of SMCJ100?
All SMCJ100 units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ100, 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 SMCJ100 part is unused and in its original packaging.
Return procedure for SMCJ100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ100 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…
