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Vishay General Semiconductor - Diodes Division SMCJ100A-M3/9AT
- Part No.:
- SMCJ100A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ100A-M3/9AT.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,691
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Product details
Overview
SMCJ100A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power rating, 100 V stand-off voltage (VWM), and 162 V clamping voltage (VC) at 9.3 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning-induced surges in automotive and industrial power systems.
For engineers reviewing the SMCJ100A-M3/9AT datasheet, SMCJ100A-M3/9AT pinout, SMCJ100A-M3/9AT application, or SMCJ100A-M3/9AT equivalent, key selection criteria include unidirectional polarity, 111–123 V breakdown voltage range at 1 mA test current, 1.0 μA max reverse leakage at VWM, -55 °C to +150 °C operating junction temperature, and halogen-free RoHS-compliant M3 termination.
Technical Context
The SMCJ100A-M3/9AT uses a glass-passivated silicon junction optimized for fast response (<1 ns) to transient overvoltages and low incremental surge resistance to maintain stable clamping under high-current 10/1000 μs waveforms. Its unidirectional configuration enables cathode-referenced placement in DC-biased power rails and signal paths where polarity-sensitive suppression is required.
Rated for 1500 W peak pulse power and 200 A non-repetitive forward surge current (8.3 ms half-sine), it meets J-STD-020 MSL Level 1 moisture sensitivity and supports automated SMT assembly with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min/max | 111 V / 123 V at 1 mA - Confirmed breakdown voltage range ensures reliable turn-on during overvoltage events. |
| VC @ IPPM | 162 V at 9.3 A - Clamping voltage limits downstream component stress during 10/1000 μs surge conditions. |
| PPPM | 1500 W - Peak pulse power handling capacity per single transient event under standardized waveform. |
| ID @ VWM | ≤1.0 μA - Ultra-low reverse leakage preserves system efficiency and minimizes standby power loss. |
| TJ max | +150 °C - Maximum junction temperature rating enables operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height for thermal and layout compatibility. |
Pinout & Package
SMCJ100A-M3/9AT uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band on one end. Mounting requires 8.0 mm × 8.0 mm copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts transient energy to ground when VLINE exceeds VBR. |
| Anode | Reference/ground return | Typically tied to system ground or low-impedance return path; completes conduction loop during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without derating in standard PCB layouts. |
| 111–123 V breakdown tolerance | Guarantees consistent clamping onset across production lots and temperature ranges (-55 °C to +150 °C). |
| Halogen-free M3 termination | Meets automotive and industrial environmental compliance requirements while maintaining solderability and whisker resistance (JESD 201 Class 2). |
| Low 1.0 μA leakage at 100 V | Prevents false triggering and signal distortion in high-impedance sensor interfaces and precision analog circuits. |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility without dry-pack or baking, simplifying manufacturing logistics. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Control |
|---|---|
Use Scenario: Suppressing load-dump transients on 24 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and regulator input to clamp spikes up to 120 V. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤162 V, preventing latch-up or permanent damage during ISO 7637-2 Pulse 5a events. | Use Scenario: Protecting gate drivers and current-sense amplifiers in variable-frequency drives. IC Role / Device Role / Timing Role: Mounted across MOSFET gate-source terminals to absorb Miller-induced voltage spikes during fast switching. Use Value: Clamps transient overshoot within 1 ns, preserving gate oxide integrity and avoiding unintended turn-on of power stages. |
| Telecom DC Power Input | Sensor Signal Line Protection |
Use Scenario: Safeguarding PoE-powered equipment inputs against lightning-induced surges on 48 V DC feeds. IC Role / Device Role / Timing Role: Installed upstream of DC-DC converters to shunt induced common-mode energy to chassis ground. Use Value: Withstands 1500 W pulses without degradation, maintaining >10⁶ surge cycles per MIL-STD-883H Method 3015.8. | Use Scenario: Shielding automotive ambient light or pressure sensor outputs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Placed in series with differential signal pairs (e.g., LIN bus) to clamp ±15 kV contact ESD per IEC 61000-4-2. Use Value: Adds <1 pF junction capacitance (typ.) to preserve signal integrity up to 100 MHz bandwidth. |
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-M3/57T | Lower PPPM (600 W), same VWM/VBR/VC, SMB (DO-214AA) package (smaller footprint, higher RθJA). | Reduced surge margin; suitable only for lower-energy transients or space-constrained designs where thermal derating is acceptable. | Select when board area is critical and peak surge exposure is limited to IEC 61000-4-5 Level 2. |
| SMCJ100CA-M3/9AT | Bidirectional variant; identical VWM/VBR/VC ratings but symmetric clamping in both polarities; same package and power rating. | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., RS-485, CAN bus stubs). | Choose for bidirectional protection needs-no change in layout or thermal design, only polarity configuration differs. |
Compared with SMBJ100A-M3/57T, SMCJ100A-M3/9AT delivers 2.5× higher surge energy handling in the same mounting style; versus SMCJ100CA-M3/9AT, it offers polarity-specific clamping essential for DC-biased rails where reverse conduction must be blocked.
Availability
SMCJ100A-M3/9AT is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, telecom power supplies, and sensor interface modules requiring stable component supply across extended product lifecycles.
Supply support for SMCJ100A-M3/9AT 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 engineered for reliability and performance in harsh environments.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, developed specifically for high-power transient suppression in automotive, industrial, and communications infrastructure where robustness against repetitive surges and long-term stability are mandatory.
FAQ
What is the clamping voltage of the SMCJ100A-M3/9AT under maximum rated surge current?
The SMCJ100A-M3/9AT has a maximum clamping voltage (VC) of 162 V when subjected to its rated peak pulse current of 9.3 A using the standardized 10/1000 μs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during transient events. The SMCJ100A-M3/9AT maintains this clamping performance consistently across its qualified temperature range.
Is the SMCJ100A-M3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
No, the SMCJ100A-M3/9AT is not AEC-Q101 qualified. It carries the M3 suffix indicating halogen-free, RoHS-compliant commercial-grade construction. For automotive use, engineers should select the AEC-Q101 qualified variant SMCJ100A-HM3/9AT, which shares identical electrical specifications and package but undergoes additional stress testing per AEC-Q101. The SMCJ100A-M3/9AT remains appropriate for industrial and telecom applications where AEC-Q101 is not mandated.
How does the SMCJ100A-M3/9AT differ from the SMCJ100CA-M3/9AT?
The SMCJ100A-M3/9AT is unidirectional, with a cathode band marking and asymmetric conduction (conducts only when anode-to-cathode voltage exceeds VBR); the SMCJ100CA-M3/9AT is bidirectional, with no polarity marking and symmetrical clamping in both directions. Both share identical VWM (100 V), VBR (111–123 V), VC (162 V), PPPM (1500 W), and SMC package. The SMCJ100A-M3/9AT is used on DC-biased lines; the CA version suits AC or floating nodes like differential buses.
What is the thermal resistance of the SMCJ100A-M3/9AT, and how does it affect PCB layout?
The SMCJ100A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended pad layout (0.31" × 0.31" copper pads). To sustain full 1500 W surge capability without exceeding TJ(max) = 150 °C, designers must ensure adequate copper area and avoid excessive trace length or isolation. Derating is required above TA = 25 °C per Figure 2 in the datasheet. The SMCJ100A-M3/9AT's RθJL of 15 °C/W also informs heatsink or plane coupling strategies.
Can the SMCJ100A-M3/9AT be used in place of a 100 V Zener diode for overvoltage protection?
No-the SMCJ100A-M3/9AT is not a Zener diode and should not replace one in voltage regulation applications. It is a transient voltage suppressor optimized for high-energy, short-duration surges (e.g., 10/1000 μs), not steady-state voltage clamping. Its VBR (111–123 V) and VC (162 V) are surge-rated parameters; it lacks the tight tolerance, low dynamic impedance, or continuous power dissipation capability of Zener regulators. Use the SMCJ100A-M3/9AT exclusively for surge protection, not DC voltage reference or regulation.
SMCJ100A-M3/9AT 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 (SMC)
SMCJ100A-M3/9AT FAQ
1.How can I place an order for SMCJ100A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ100A-M3/9AT 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-M3/9AT reliable?
The price and inventory of SMCJ100A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ100A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ100A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ100A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ100A-M3/9AT?
SMCJ100A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ100A-M3/9AT 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-M3/9AT?
For technical support, including SMCJ100A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ100A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ100A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ100A-M3/9AT 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-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ100A-M3/9AT?
All SMCJ100A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ100A-M3/9AT, 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-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ100A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ100A-M3/9AT Tags
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