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Vishay General Semiconductor - Diodes Division SMC3K36CAHM3/9A
- Part No.:
- SMC3K36CAHM3/9A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K36CAHM3/9A.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,605
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Product details
Overview
SMC3K36CAHM3/9A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 3000 W peak pulse power (10/1000 μs), 40.0–44.2 V breakdown voltage, and 58.1 V maximum clamping voltage at 51.6 A surge current. It protects MOSFETs and sensor signal lines in automotive powertrain control modules against inductive switching transients.
For engineers reviewing the SMC3K36CAHM3/9A datasheet, SMC3K36CAHM3/9A pinout, SMC3K36CAHM3/9A application, or SMC3K36CAHM3/9A equivalent, key selection criteria include its AEC-Q101 qualification, bidirectional polarity, 150 °C max junction temperature, and halogen-free HM3 suffix indicating automotive-grade reliability and solderability per J-STD-002.
Technical Context
This TVS diode operates as a voltage-clamping protection device across sensitive nodes, responding within picoseconds to transient overvoltages exceeding its standoff voltage of 36 V. Its low incremental surge resistance ensures minimal voltage overshoot during 51.6 A peak pulses, while the bidirectional architecture enables symmetrical clamping on AC-coupled or floating signal paths.
The SMC3K36CAHM3/9A is designed for placement directly at IC or MOSFET inputs/outputs, leveraging its 3000 W surge rating and thermal robustness up to 150 °C junction temperature. Its MSL Level 1 rating and 260 °C lead-free reflow compatibility support high-yield automated assembly in automotive and industrial PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000 W (10/1000 μs waveform): sustains single high-energy surges without failure in automotive load-dump or inductive kick scenarios |
| Breakdown Voltage VBR | 40.0–44.2 V at 1.0 mA: defines precise voltage threshold where clamping initiates, ensuring reliable protection above system operating voltage |
| Standoff Voltage VWM | 36 V: maximum continuous reverse voltage before leakage exceeds 2.0 μA - sets safe operating margin below clamping onset |
| Clamping Voltage VC | 58.1 V at 51.6 A IPPM: limits transient voltage seen by downstream ICs to ≤58.1 V during worst-case surge events |
| Junction Temperature Range | −55 °C to +150 °C: supports operation in under-hood automotive environments and industrial enclosures without derating |
| Qualification | AEC-Q101 qualified: validated for automotive electronics per stress test requirements including HTGB, TCT, and HTRB |
| Package | SMC (DO-214AB): 8.0 mm × 8.0 mm copper pad footprint provides thermal mass for surge energy dissipation |
Pinout & Package
SMC3K36CAHM3/9A uses the standard SMC (DO-214AB) surface-mount package with two terminals: Cathode and Anode. The device is bidirectional and unmarked; polarity is not indicated on the body. Leads are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either direction; connects to protected line or ground return path depending on layout |
| Cathode | Transient current exit point (bidirectional) | Completes clamping path; paired with Anode to form symmetrical voltage-limiting junction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional polarity | Enables protection of AC-coupled or floating differential signals without polarity-sensitive placement |
| 3000 W peak pulse power | Handles severe ISO 7637-2 Pulse 5a load-dump transients in 12 V automotive systems without degradation |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal cycling, humidity, and bias stress conditions |
| Halogen-free, RoHS-compliant HM3 suffix | Meets automotive environmental compliance and JESD201 Class 2 whisker resistance for high-reliability solder joints |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture-related popcorning or delamination |
Applications
| Automotive Powertrain Control | Industrial Motor Drive I/O Protection |
|---|---|
|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver pins from inductive flyback in solenoid driver circuits within engine control units. IC Role / Device Role: Voltage-clamping TVS placed at connector interface and IC input pins to limit transients to <58.1 V. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic interfaces exposed to >100 V spikes during coil de-energization. |
Use Scenario: Safeguarding analog input channels of PLC analog modules connected to 4–20 mA current loops near variable-frequency drives. IC Role / Device Role: Bidirectional clamping element shunting surge energy from field wiring into chassis ground. Use Value: Maintains signal integrity by limiting induced transients to ≤58.1 V while preserving sub-μA leakage at 36 V operating voltage. |
| Automotive ADAS Sensor Interface | Telecom Base Station DC Power Input |
|
Use Scenario: Shielding radar and camera module LVDS or FPD-Link III signal lines from ESD and board-level coupling in front-end modules. IC Role / Device Role: Low-capacitance bidirectional TVS mounted adjacent to connector to suppress fast-rising transients before reaching serializer ICs. Use Value: Clamps 8 kV contact ESD per IEC 61000-4-2 without distorting high-speed data waveforms due to controlled dynamic impedance. |
Use Scenario: Secondary-level surge suppression on −48 V DC telecom power feeds entering base station cabinets. IC Role / Device Role: Standoff-rated TVS absorbing residual surges after primary GDT or MOV stages in multi-stage protection networks. Use Value: Provides precise 36 V standoff and 58.1 V clamping to protect downstream DC-DC converters rated for ≤60 V absolute maximum input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMC3K36CAHM3_A/9A | Same electrical specs; updated suffix denotes revised internal process control and enhanced lot traceability | No functional change; identical AEC-Q101 qualification and packaging | Preferred for new designs requiring latest revision and extended lifecycle support |
| SMAJ36CA | Lower 400 W peak power rating; SMA package (smaller thermal mass); 53.3 V clamping at 7.5 A | Not suitable for 3000 W surge events; limited to low-energy ESD or signal-line protection | Select only when system-level surge testing confirms ≤400 W requirement and space constraints prohibit SMC footprint |
Compared with SMC3K36CAHM3/9A, the SMC3K36CAHM3_A/9A offers identical performance with improved manufacturing traceability, while SMAJ36CA trades surge capability for smaller size - making the original SMC3K36CAHM3/9A optimal for high-energy automotive and industrial protection where clamping voltage stability under 51.6 A surges is critical.
Availability
SMC3K36CAHM3/9A is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive I/O protection, and telecom DC power input applications requiring stable component supply, AEC-Q101 compliance, and 3000 W transient immunity.
Supply support for SMC3K36CAHM3/9A 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, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMC3K36CAHM3/9A belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What does the 'HM3' suffix mean in SMC3K36CAHM3/9A?
The HM3 suffix in SMC3K36CAHM3/9A indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. It distinguishes this automotive-grade variant from commercial M3 versions and confirms suitability for under-hood and safety-critical applications.
Is SMC3K36CAHM3/9A suitable for ISO 7637-2 Pulse 5a compliance?
Yes, SMC3K36CAHM3/9A is suitable for ISO 7637-2 Pulse 5a compliance due to its 3000 W peak pulse power rating and 58.1 V clamping voltage at 51.6 A. When properly laid out with low-inductance grounding, it limits induced voltages to levels compatible with 12 V automotive electronics' absolute maximum ratings.
Does SMC3K36CAHM3/9A have polarity marking on the package?
No, SMC3K36CAHM3/9A has no polarity marking on the package because it is a bidirectional TVS diode. The SMC (DO-214AB) case is symmetric, and both terminals function identically - either can serve as anode or cathode depending on transient polarity.
What is the maximum printed circuit board copper area recommended for SMC3K36CAHM3/9A thermal performance?
Vishay specifies a 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area for SMC3K36CAHM3/9A to achieve rated 3000 W pulse power handling. Using smaller pads reduces thermal mass and may cause premature failure during repeated surges or elevated ambient temperatures.
Can SMC3K36CAHM3/9A replace SMC3K36CA-M3/9A in existing designs?
Yes, SMC3K36CAHM3/9A can replace SMC3K36CA-M3/9A in existing designs because both share identical electrical specifications, package dimensions, and pinout. The HM3 version adds AEC-Q101 qualification and whisker-resistant plating, enhancing reliability without requiring layout changes.
SMC3K36CAHM3/9A 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 51.6A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMC3K36CAHM3/9A FAQ
1.How can I place an order for SMC3K36CAHM3/9A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K36CAHM3/9A 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 SMC3K36CAHM3/9A reliable?
The price and inventory of SMC3K36CAHM3/9A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K36CAHM3/9A is usually 5 days.
3.What payment methods are accepted for SMC3K36CAHM3/9A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K36CAHM3/9A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K36CAHM3/9A?
SMC3K36CAHM3/9A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K36CAHM3/9A 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 SMC3K36CAHM3/9A?
For technical support, including SMC3K36CAHM3/9A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K36CAHM3/9A requirements.
6.How does Aetrix verify that SMC3K36CAHM3/9A is sourced from the original manufacturer or authorized distributors?
All SMC3K36CAHM3/9A 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 SMC3K36CAHM3/9A meets industry standards.
7.What is the process for return or replacement of SMC3K36CAHM3/9A?
All SMC3K36CAHM3/9A units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K36CAHM3/9A, 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 SMC3K36CAHM3/9A part is unused and in its original packaging.
Return procedure for SMC3K36CAHM3/9A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K36CAHM3/9A Tags
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