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Vishay General Semiconductor - Diodes Division SMC3K36CAHM3_A/I
- Part No.:
- SMC3K36CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K36CAHM3_A/I.pdf
- Description:
- 3KW, 36V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,908
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Product details
Overview
SMC3K36CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 3000 W peak pulse power (10/1000 μs), 58.1 V clamping voltage at 51.6 A, and 40.0–44.2 V breakdown voltage range. It protects automotive power lines, sensor interfaces, and MOSFET gate drivers against ISO 7637-2 Pulse 1/2a/3a/3b and ISO 16750-2 Pulse b transients.
For engineers reviewing the SMC3K36CAHM3_A datasheet, SMC3K36CAHM3_A pinout, SMC3K36CAHM3_A application, or SMC3K36CAHM3_A equivalent, this device delivers AEC-Q101 qualification, 30 kV ESD immunity per IEC 61000-4-2, UL 497B recognition, and precise clamping performance critical for 12 V automotive electronics and industrial control systems.
Technical Context
This TVS diode operates bidirectionally to clamp both positive and negative transients without polarity marking. Its low incremental surge resistance and fast response time ensure effective suppression of fast-rising spikes such as load dump and inductive switching events.
It meets stringent automotive standards including ISO 7637-2 (Pulse 1, 2a, 3a, 3b) and ISO 16750-2 (Pulse b), with thermal performance validated up to 175 °C junction temperature and MSL Level 1 moisture sensitivity rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 40.0–44.2 V at 1.0 mA test current - defines minimum voltage at which clamping initiates under transient stress |
| Stand-off Voltage (VWM) | 36 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| Clamping Voltage (VC) | 58.1 V at 51.6 A (10/1000 μs) - peak voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power (PPPM) | 3000 W (10/1000 μs) - energy-handling capability for standard automotive surge waveforms |
| Junction Temperature Range | −55 °C to +175 °C - enables operation in under-hood automotive environments and industrial enclosures |
| ESD Immunity | ±30 kV (IEC 61000-4-2 contact/air discharge) - robustness against human-body-model electrostatic events |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no polarity marking on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (K) | Transient return path (anode referenced) | Connected to ground or low-impedance return node; forms symmetrical clamping path with anode |
| Anode (A) | Transient input path (cathode referenced) | Connected to protected line (e.g., battery rail, signal line); conducts surge current to cathode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines and dual-polarity power rails without external polarity management |
| 3000 W peak pulse power (10/1000 μs) | Supports robust protection against ISO 7637-2 Pulse 1 (−150 V, 2 ms) and Pulse 2a (112 V, 50 μs) in 12 V systems |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring long-term field reliability |
| UL 497B recognition (E136766) | Confirms compliance with safety standards for telecom and industrial equipment surge protection circuits |
| MSL Level 1 (260 °C peak reflow) | Permits standard lead-free SMT assembly without moisture-related popcorning or delamination risks |
Applications
| Automotive Battery Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients per ISO 16750-2 Pulse b. IC Role / Device Role / Timing Role: Primary clamping element placed between battery input and downstream DC/DC converter or microcontroller power supply. Use Value: Limits transient voltage to ≤58.1 V, preventing damage to 40 V-rated input stages while sustaining 51.6 A surge current. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF at 0 V) shunt protector on differential or single-ended signal traces near connector entry points. Use Value: Clamps ±30 kV ESD events to <±60 V within nanoseconds, preserving signal integrity and ADC accuracy without loading. |
| Automotive CAN Bus Interface Protection | MOSFET Gate Driver Surge Suppression |
Use Scenario: Safeguarding CAN transceiver I/O pins against coupled transients from adjacent power wiring in vehicle networks. IC Role / Device Role / Timing Role: Bidirectional TVS placed across CAN_H/CAN_L differential pair, referenced to chassis ground via low-inductance path. Use Value: Maintains common-mode clamping symmetry with ≤2 V differential offset during 3000 W surges, ensuring bus fault recovery. |
Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by microcontrollers in motor control inverters. IC Role / Device Role / Timing Role: Shunt protector between gate and source terminals, absorbing Miller-induced voltage spikes during fast switching transitions. Use Value: Clamps gate-source voltage to ≤58.1 V during 51.6 A transient, avoiding destructive avalanche while preserving driver timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Lower peak pulse power (400 W), SMA package (smaller footprint, higher RthJA = 110 °C/W), same VWM/VC range | Suitable for lower-energy consumer electronics; not AEC-Q101 qualified or ISO 7637-2 validated | Select when space-constrained and surge energy is limited to <500 W; avoid for automotive or industrial mains-connected systems. |
| 1.5KE36CA | Through-hole DO-201 package, 1500 W rating, higher clamping voltage (64.5 V at 23.3 A), no AEC-Q101 or UL 497B | Used in legacy industrial power supplies where board-level rework is acceptable and automated SMT not required | Choose only for cost-sensitive, non-automotive designs where manual assembly and lower surge margin are acceptable. |
Compared with SMAJ36CA and 1.5KE36CA, SMC3K36CAHM3_A provides 7.5× higher surge power handling, AEC-Q101 reliability validation, and UL safety certification-making it the sole option for production automotive ECUs and safety-critical industrial controllers requiring certified transient immunity.
Availability
SMC3K36CAHM3_A is available at Aetrix Electronics and suitable for automotive battery management, industrial sensor interface design, and MOSFET gate protection requiring stable component supply and full traceability through extended product lifecycle.
Supply support for SMC3K36CAHM3_A 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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SMC3KxxCAHM3_A series was developed specifically for AEC-Q101-compliant automotive transient suppression, targeting ISO 7637-2 and ISO 16750-2 compliance in 12 V and 24 V vehicle electrical architectures.
FAQ
What is the clamping voltage of SMC3K36CAHM3_A at its rated peak pulse current?
The SMC3K36CAHM3_A has a maximum clamping voltage (VC) of 58.1 V at 51.6 A peak pulse current using the 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on the protected circuit during standardized surge testing. The SMC3K36CAHM3_A maintains this clamping performance across its full operating temperature range from −55 °C to +175 °C.
Is SMC3K36CAHM3_A qualified for automotive applications?
Yes, SMC3K36CAHM3_A is AEC-Q101 qualified and explicitly validated for automotive use, including compliance with ISO 7637-2 (Pulse 1, 2a, 3a, 3b) and ISO 16750-2 (Pulse b). Its SMC package meets MSL Level 1, and the device carries UL 497B safety recognition (file E136766), making SMC3K36CAHM3_A suitable for engine control units, body control modules, and ADAS sensors.
What is the standoff voltage and leakage current specification for SMC3K36CAHM3_A?
The SMC3K36CAHM3_A has a maximum reverse stand-off voltage (VWM) of 36 V and a maximum reverse leakage current (ID) of 1.0 μA at that voltage and 25 °C. This ensures minimal power loss and signal interference in always-on automotive circuits, while maintaining sufficient margin below the 40.0–44.2 V breakdown threshold. The SMC3K36CAHM3_A sustains this leakage performance across its full temperature range.
Does SMC3K36CAHM3_A support bidirectional transient suppression?
Yes, SMC3K36CAHM3_A is a bidirectional TVS diode, meaning it clamps both positive and negative voltage transients symmetrically without requiring polarity orientation during placement. Its unmarked SMC (DO-214AB) package reflects this symmetry, and its electrical characteristics-including matched VBR, VC, and IPPM for both polarities-are confirmed in the Vishay datasheet. This makes SMC3K36CAHM3_A ideal for protecting AC-coupled lines and floating buses like CAN or LIN.
What packaging and reel options are available for SMC3K36CAHM3_A?
SMC3K36CAHM3_A is supplied in 13-inch plastic tape and reel format with a base quantity of 3500 units per reel (suffix "I"). The device uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing. The SMC3K36CAHM3_A reel packaging supports high-volume SMT assembly with verified moisture sensitivity level (MSL) 1 and peak reflow tolerance up to 260 °C.
SMC3K36CAHM3_A/I 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:
- 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)
SMC3K36CAHM3_A/I FAQ
1.How can I place an order for SMC3K36CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K36CAHM3_A/I 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_A/I reliable?
The price and inventory of SMC3K36CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K36CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMC3K36CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K36CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K36CAHM3_A/I?
SMC3K36CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K36CAHM3_A/I 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_A/I?
For technical support, including SMC3K36CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K36CAHM3_A/I requirements.
6.How does Aetrix verify that SMC3K36CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMC3K36CAHM3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of SMC3K36CAHM3_A/I?
All SMC3K36CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K36CAHM3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for SMC3K36CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K36CAHM3_A/I Tags
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