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Taiwan Semiconductor Corporation SMCJ100AH
- Part No.:
- SMCJ100AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ100AH.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,790
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Product details
Overview
SMCJ100AH 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 delivers AEC-Q101 qualification and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and ESD protection in power rails.
For engineers reviewing the SMCJ100AH datasheet, SMCJ100AH pinout, SMCJ100AH application, or SMCJ100AH equivalent, this page provides verified electrical parameters, thermal performance data, polarity marking guidance, and validated alternatives for automotive-grade DC power line protection where fast response (<1.0 ps), low leakage (<1 µA @ 100 V), and robust 1500 W surge handling are required.
Technical Context
The SMCJ100AH uses a glass-passivated silicon junction optimized for high-energy transient suppression in unidirectional configurations. Its 10 °C/W junction-to-case thermal resistance enables effective heat dissipation during 1 ms 8.3 ms surge events, while its 55 °C/W junction-to-ambient rating supports operation up to +150 °C junction temperature under PCB-mounted conditions.
Designed for automotive electronics, it complies with ISO 7637-2 test pulses and features a marked cathode band for polarity identification. The device exhibits <1 µA reverse leakage at rated VWM and maintains clamping performance across -55 °C to +150 °C operating range without derating below 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 111 V / 123 V @ 1 mA - Confirmed breakdown threshold range for reliable turn-on margin |
| VC @ IPPM | 162 V @ 9.7 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPK | 1500 W - Peak pulse power handling per single 1 ms transient per Fig.5 waveform |
| IR @ VWM | <1 µA - Negligible leakage current preserves system standby power integrity |
| TJ max | +150 °C - Enables use in under-hood automotive environments without thermal derating |
| RθJC | 10 °C/W - Supports direct thermal coupling to copper pour for sustained surge duty |
Pinout & Package
DO-214AB (SMC) surface-mount package with matte tin-plated leads, polarity indicated by cathode band on one end. Weight: 0.210 g. Meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional TVS configuration | Connected to ground or low-impedance return path to shunt transients |
| Cathode | High-side connection with polarity marking band | Connected to protected line (e.g., 12 V/24 V rail); clamps when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control units and body electronics |
| Glass passivated junction | Enhances long-term reliability and moisture resistance in humid or condensing environments |
| ISO 7637-2 compliance | Guarantees immunity to real-world vehicle electrical disturbances: Pulse 1 (inductive switch-off), Pulse 2a/2b (load dump), Pulse 3a/3b (capacitive coupling) |
| Fast response time | <1.0 ps rise-time response ensures clamping initiates before sensitive ICs experience overvoltage damage |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally compliant manufacturing and recycling |
Applications
| Automotive Power Rail Protection | Industrial DC Input Stage |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump surges up to 120 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp transients before they reach DC-DC converters. Use Value: Limits peak voltage to 162 V at 9.7 A, preventing damage to 36 V-rated input stages and enabling smaller, cost-effective input capacitors. | Use Scenario: Safeguarding programmable logic controllers (PLCs) powered from 24 V industrial supplies exposed to relay switching noise and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp at DIN-rail power entry point, coordinated with upstream fusing and downstream TVS arrays. Use Value: Withstands repetitive 1500 W surges and maintains <1 µA leakage, preserving low-power sleep modes and reducing thermal drift in precision analog front-ends. |
| Telecom Power Interface | Consumer Equipment DC Adapter Input |
Use Scenario: Front-end protection of PoE-powered network switches and base stations receiving 48 V DC via outdoor cabling. IC Role / Device Role / Timing Role: First-line transient suppressor on 48 V input, absorbing induced surges from nearby lightning strikes or cable coupling. Use Value: Clamps within 1 ps to 162 V, ensuring downstream DC-DC controllers remain within absolute maximum ratings even during worst-case 10/1000 µs transients. | Use Scenario: Input-stage surge protection for smart home hubs and set-top boxes using wall adapters subject to mains-borne transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed after fuse and before bulk capacitor to absorb differential-mode surges from AC/DC adapter output ripple and ESD events. Use Value: Low 100 V VWM allows compatibility with 12 V nominal inputs while delivering 1500 W peak power handling-exceeding IEC 61000-4-5 Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ100A | Same DO-214AC (SMA) package; 100 V VWM, 111–123 V VBR, 162 V VC @ 9.7 A; lower PPK (400 W) | Lower surge capacity limits use to non-automotive, low-energy interfaces like USB or sensor lines | Select when space-constrained layouts require smaller SMA footprint and surge energy is ≤400 W |
| ON Semiconductor 1.5SMC100A | DO-214AB (SMC) package; identical VWM/VBR/VC specs; same 1500 W rating but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial systems without automotive certification mandates | Choose for cost-sensitive industrial designs where AEC-Q101 is not required and full 1500 W capability is needed |
Compared with SMCJ100AH, SMAJ100A offers smaller size but only 400 W surge handling-insufficient for ISO 7637-2 Pulse 5a-while 1.5SMC100A matches all electrical specs and package but omits AEC-Q101 validation, making it appropriate for non-automotive 24 V/48 V power rails requiring identical clamping performance.
Availability
SMCJ100AH is available at Aetrix Electronics and suitable for automotive electronic control units, industrial PLC power inputs, telecom 48 V PoE interfaces, and consumer DC adapter protection requiring stable component supply and full AEC-Q101 compliance.
Supply support for SMCJ100AH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The SMCJ series was developed specifically for high-reliability transient suppression in harsh automotive environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust thermal performance in surface-mount packages.
FAQ
What is the polarity configuration of the SMCJ100AH?
The SMCJ100AH is a unidirectional TVS diode with clearly marked cathode band on the DO-214AB (SMC) package. When installed, the cathode connects to the protected line (e.g., 24 V rail) and the anode connects to ground. This configuration ensures clamping only during positive transients above VBR, making it unsuitable for bidirectional signal line protection without external circuitry.
Does the SMCJ100AH meet automotive qualification standards?
Yes, the SMCJ100AH is AEC-Q101 qualified and explicitly tested to ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b standards. Its construction-including glass passivation, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1-supports deployment in engine control modules, body control units, and other under-hood automotive systems requiring long-term reliability.
What is the maximum clamping voltage of the SMCJ100AH and at what current is it specified?
The SMCJ100AH has a maximum clamping voltage (VC) of 162 V, measured at 9.7 A peak pulse current (IPPM) under the standardized 10/1000 µs double-exponential waveform defined in Fig.5 of the datasheet. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage seen by downstream components during a worst-case transient event.
Can the SMCJ100AH be used in bidirectional applications?
No-the SMCJ100AH is unidirectional only. For bidirectional protection, Taiwan Semiconductor specifies parts with "CH" or "CAH" suffixes (e.g., SMCJ100CH). Using the SMCJ100AH in reverse-biased mode beyond its specified reverse stand-off voltage risks permanent junction damage due to lack of symmetrical breakdown characteristics.
How does the thermal performance of the SMCJ100AH affect PCB layout?
The SMCJ100AH has RθJC = 10 °C/W and RθJA = 55 °C/W, meaning effective PCB thermal design is critical. To maintain junction temperature ≤150 °C during repeated surges, designers must provide ≥40 mm² of 2 oz copper connected to both terminals, avoid narrow traces, and minimize thermal isolation. Without adequate copper pour, the device may exceed TJ max even at moderate ambient temperatures.
SMCJ100AH 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):
- 9.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ100AH FAQ
1.How can I place an order for SMCJ100AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ100AH 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 SMCJ100AH reliable?
The price and inventory of SMCJ100AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ100AH is usually 5 days.
3.What payment methods are accepted for SMCJ100AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ100AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ100AH?
SMCJ100AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ100AH 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 SMCJ100AH?
For technical support, including SMCJ100AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ100AH requirements.
6.How does Aetrix verify that SMCJ100AH is sourced from the original manufacturer or authorized distributors?
All SMCJ100AH 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 SMCJ100AH meets industry standards.
7.What is the process for return or replacement of SMCJ100AH?
All SMCJ100AH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ100AH, 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 SMCJ100AH part is unused and in its original packaging.
Return procedure for SMCJ100AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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