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Vishay General Semiconductor - Diodes Division SMCJ100A-E3/9AT
- Part No.:
- SMCJ100A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ100A-E3/9AT.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,006
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Product details
Overview
SMCJ100A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 100 V stand-off voltage (VWM), 111–123 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), 9.3 A peak pulse current (IPPM), and clamps transients to ≤162 V. It is widely used in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMCJ100A-E3/9AT datasheet, SMCJ100A-E3/9AT pinout, SMCJ100A-E3/9AT application, or SMCJ100A-E3/9AT equivalent, key selection criteria include unidirectional polarity, 1500 W surge rating, 162 V clamping voltage at rated IPPM, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 100 V), but triggers into low-impedance conduction when reverse voltage exceeds its 111–123 V breakdown range. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge stress.
The device delivers fast response (<1 ns) to transient events and maintains low incremental surge resistance to minimize clamping overshoot. Thermal resistance is specified at RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads), enabling effective power dissipation during 10/1000 µs surges up to 1500 W without exceeding 150 °C junction temperature.
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 at 1 mA - guaranteed breakdown window defining turn-on threshold |
| VC @ IPPM | ≤162 V at 9.3 A - clamping voltage under full 1500 W surge, critical for downstream IC survivability |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, defining surge energy capacity |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage ensuring minimal standby power loss |
| TJ max. | +150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.13 mm × 6.22 mm footprint and 3.20 mm height |
Pinout & Package
SMCJ100A-E3/9AT uses the SMC (DO-214AB) package: a two-terminal, unidirectional surface-mount device with cathode band marking. The case is molded compound meeting UL 94 V-0; terminals are matte tin-plated for J-STD-002 solderability. Polarity is marked by a single band indicating the cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes conduction path during transient clamp |
| Cathode | High-side connection point | Connected to protected line (e.g., 100 V rail); band-marked terminal defines polarity |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables protection against severe ISO 7637-2 Pulse 5a/b surges in 12 V automotive systems |
| 162 V clamping voltage at 9.3 A | Limits voltage seen by downstream 150 V-rated MOSFETs or regulators during worst-case transients |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
| RoHS-compliant E3 suffix | Ensures compliance with EU environmental directives and supports lead-free reflow profiles |
| MSL Level 1 rating | Allows unlimited floor life before reflow, eliminating bake-out requirements in production |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: 12 V battery-fed ECUs exposed to load-dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges above 100 V. Use Value: Clamps 1500 W transients to ≤162 V, protecting 150 V input-rated DC/DC converters and microcontrollers. |
Use Scenario: Analog sensor outputs (e.g., pressure, temperature) routed across noisy factory floors. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal lines to suppress ESD and inductive switching noise. Use Value: Sub-1 µA leakage at 100 V avoids loading precision sensor bridges; fast <1 ns response prevents signal corruption. |
| Telecom DC Power Feeds | Consumer Power Adapter Outputs |
|
Use Scenario: -48 V telecom rectifier outputs subject to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus before PoE controllers or interface ICs. Use Value: 1500 W rating handles multi-kA induced surges; 150 °C TJ max supports sealed outdoor cabinet operation. |
Use Scenario: USB-C PD adapter 20 V output rails vulnerable to plug-in surges and ESD. IC Role / Device Role / Timing Role: Final-stage TVS on regulated output to prevent damage to connected devices during hot-plug events. Use Value: 100 V VWM provides margin above 20 V nominal while maintaining tight 162 V clamping for USB-C 20 V tolerant receivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC100A-TB-E3/9AT | Same VWM (100 V), lower PPPM (1000 W), higher VC (170 V at 6.2 A) | Lower surge energy handling; suitable only for less severe IEC 61000-4-5 Level 3 environments | Select when cost sensitivity outweighs need for full 1500 W immunity; verify clamping margin with downstream ICs |
| 1.5KE100A | Through-hole DO-201 package, same VWM/VBR/VC specs, identical 1500 W rating | Requires through-hole assembly; not compatible with high-speed SMT lines or space-constrained layouts | Choose only for legacy board redesigns where SMC footprint change is prohibited; otherwise prefer SMCJ100A-E3/9AT for modern manufacturing |
Compared with SAC100A-TB-E3/9AT and 1.5KE100A, the SMCJ100A-E3/9AT uniquely combines 1500 W surge capability, SMC surface-mount form factor, MSL Level 1 handling, and RoHS-compliant E3 termination-making it optimal for new automotive and industrial designs requiring automated assembly and high-reliability transient immunity.
Availability
SMCJ100A-E3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom DC feeds, and consumer power adapter outputs requiring stable component supply across extended production lifecycles.
Supply support for SMCJ100A-E3/9AT 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SMCJ100A-E3/9AT under full-rated surge current?
The SMCJ100A-E3/9AT clamps to a maximum of 162 V when subjected to its rated 9.3 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at the device terminals with proper PCB layout (0.31" × 0.31" copper pads per terminal) and is critical for ensuring downstream components remain within their absolute maximum voltage ratings during surge events. The SMCJ100A-E3/9AT achieves this performance via low incremental surge resistance and optimized junction design.
Is the SMCJ100A-E3/9AT suitable for automotive applications?
Yes, the SMCJ100A-E3/9AT is qualified to AEC-Q101 when ordered with HE3 suffix (e.g., SMCJ100AHE3_A/I); however, the E3/9AT variant is commercial-grade and widely deployed in non-safety-critical automotive subsystems such as infotainment power supplies and body control module sensor interfaces. Its 150 °C junction rating, 1500 W surge capability, and robust SMC package make it suitable for under-dash environments, though system-level validation per ISO 7637-2 remains the designer's responsibility. The SMCJ100A-E3/9AT meets all baseline thermal and mechanical requirements for automotive use.
How does the SMCJ100A-E3/9AT differ from bidirectional variants like SMCJ100CA?
The SMCJ100A-E3/9AT is unidirectional and intended for DC line protection where polarity is fixed (e.g., +100 V rail to ground), offering lower leakage and slightly tighter VBR tolerance than bidirectional versions. In contrast, SMCJ100CA protects AC or floating signals and conducts in both directions, exhibiting symmetric breakdown behavior but higher ID at VWM. The SMCJ100A-E3/9AT uses a cathode band for polarity identification, whereas SMCJ100CA has no marking. Select SMCJ100A-E3/9AT when protecting polarized DC rails with strict leakage constraints.
What is the thermal resistance of the SMCJ100A-E3/9AT, and how does it affect layout?
The SMCJ100A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended minimum pad layout: 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes still air and no internal layer copper; adding thermal vias or internal planes reduces RθJA significantly. For reliable 1500 W surge handling, PCB layout must follow Vishay's recommended pad dimensions and avoid narrow traces-otherwise, localized heating may exceed the 150 °C TJ max. The SMCJ100A-E3/9AT's thermal performance directly determines safe surge repetition rate and ambient operating limits.
Does the SMCJ100A-E3/9AT require derating at elevated ambient temperatures?
Yes, the SMCJ100A-E3/9AT requires derating of its peak pulse power (PPPM) above TA = 25 °C, per Figure 2 in the Vishay datasheet 88394. At 85 °C ambient, PPPM drops to approximately 70 % of 1500 W (~1050 W); at 125 °C, it falls to ~40 % (~600 W). This derating is due to reduced thermal headroom for junction temperature control. Designers must apply this curve when sizing protection for high-temperature environments (e.g., engine compartments) and ensure that the SMCJ100A-E3/9AT's clamping voltage remains below downstream IC limits even at reduced power levels.
SMCJ100A-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- 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:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ100A-E3/9AT FAQ
1.How can I place an order for SMCJ100A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ100A-E3/9AT 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-E3/9AT reliable?
The price and inventory of SMCJ100A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ100A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ100A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ100A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ100A-E3/9AT?
SMCJ100A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ100A-E3/9AT 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-E3/9AT?
For technical support, including SMCJ100A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ100A-E3/9AT requirements.
6.How does Aetrix verify that SMCJ100A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ100A-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ100A-E3/9AT?
All SMCJ100A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ100A-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ100A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ100A-E3/9AT Tags
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