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Vishay General Semiconductor - Diodes Division SMC3K36CAHM3/57
- Part No.:
- SMC3K36CAHM3/57
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K36CAHM3/57.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:978
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Product details
Overview
SMC3K36CAHM3/57 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode 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 SMC3K36CAHM3/57 datasheet, SMC3K36CAHM3/57 pinout, SMC3K36CAHM3/57 application, or SMC3K36CAHM3/57 equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, 150 °C junction temperature rating, halogen-free RoHS-compliant construction, and compatibility with wave-soldering process constraints.
Technical Context
The SMC3K36CAHM3/57 operates as a silicon avalanche diode with symmetrical bidirectional clamping behavior, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its low incremental surge resistance and fast response time ensure effective suppression of sub-microsecond transients induced by relay or solenoid switching.
Designed for automotive-grade reliability, the device meets JESD201 Class 2 whisker resistance, MSL Level 1 per J-STD-020, and UL 497B recognition (E136766). The SMC (DO-214AB) package supports thermal dissipation up to 150 °C junction temperature under derated conditions above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 3000 W - sustains high-energy transients common in 12 V automotive load-dump events |
| Breakdown Voltage VBR | 40.0–44.2 V - ensures reliable conduction onset above normal 36 V system operating voltage |
| Stand-off Voltage VWM | 36 V - blocks leakage below system max operating voltage without false triggering |
| Maximum Clamping Voltage VC | 58.1 V at 51.6 A - limits protected circuit voltage to safe level during full-rated surge |
| Junction Temperature Range | −55 °C to +150 °C - supports under-hood deployment in engine control units |
| Qualification Standard | AEC-Q101 qualified - validated for automotive electronic systems per stress test requirements |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad area for thermal management |
Pinout & Package
SMC3K36CAHM3/57 uses a 2-terminal SMC (DO-214AB) package with no polarity marking for bidirectional operation. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity - enables symmetric clamping across AC or floating nodes |
| Cathode/Anode (unmarked) | Bidirectional avalanche junction | No physical distinction; terminals interchangeable - eliminates orientation errors during automated placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional polarity only | Eliminates need for polarity-aware layout or orientation verification in differential or AC-coupled protection schemes |
| 3000 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a load-dump surges in 12 V vehicle networks without degradation |
| AEC-Q101 qualification | Validated for automotive electronics per temperature cycling, humidity bias, and mechanical shock requirements |
| Halogen-free, RoHS-compliant HM3 suffix | Meets automotive environmental compliance mandates and supports lead-free reflow profiles up to 260 °C peak |
| MSL Level 1 moisture sensitivity | Enables floor-life unlimited handling without dry-pack or baking prior to assembly |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIOs and driver ICs from inductive kickback generated by fuel injector solenoids. IC Role / Device Role: Bidirectional TVS placed across signal line and ground to clamp both positive and negative transients. Use Value: Limits voltage excursion to ≤58.1 V during 51.6 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. |
Use Scenario: Shields 24 V DC digital input optocoupler circuits from field-wiring surge coupling in factory automation. IC Role / Device Role: Standoff-rated TVS connected between input terminal and common rail to absorb repetitive switching transients. Use Value: Maintains 36 V stand-off while clamping to 58.1 V, ensuring compatibility with 24 V nominal industrial I/O thresholds and long-term reliability. |
| Automotive ADAS Camera Power Rail | Telecom Base Station Sensor Interface |
Use Scenario: Guards 12 V camera module power input against battery line transients during cold-crank or jump-start events. IC Role / Device Role: Primary overvoltage clamp on main power rail upstream of DC/DC converter. Use Value: Delivers 3000 W pulse handling with 58.1 V clamping, keeping downstream converters within absolute maximum ratings during ISO 16750-2 tests. |
Use Scenario: Protects RS-485 transceiver signal pairs from lightning-induced surges on outdoor telecom sensor links. IC Role / Device Role: Bidirectional TVS across differential pair (A–B) to suppress common-mode and differential-mode transients. Use Value: Symmetric clamping ensures balanced voltage limiting on both lines, preserving signal integrity and receiver common-mode range. |
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/57 | Same electrical specs and AEC-Q101 qualification; updated suffix denotes revised manufacturing flow and traceability enhancements | Identical use in automotive ECUs and industrial controls; fully compatible with existing PCB layouts and thermal design | Select when new design requires latest Vishay production revision with enhanced lot traceability |
| SMAJ36A | Lower 400 W peak pulse power; SMA package (smaller footprint, lower thermal mass); unidirectional only | Limited to single-polarity DC rails; unsuitable for AC or differential signal protection without additional components | Consider only for cost-sensitive, non-automotive applications with lower surge energy requirements |
Compared with SMC3K36CAHM3/57, the SMC3K36CAHM3_A/57 offers identical protection performance with improved manufacturing traceability, while SMAJ36A provides reduced surge capability and unidirectional operation-requiring redesign for bidirectional or high-energy use cases.
Availability
SMC3K36CAHM3/57 is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, and telecom sensor interface designs requiring stable component supply and AEC-Q101 compliance.
Supply support for SMC3K36CAHM3/57 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 and automotive qualification.
The SMC3KxxCA family targets high-energy transient suppression in harsh-environment applications, specifically engineered for automotive powertrain and chassis systems where robustness and AEC-Q101 validation are mandatory.
FAQ
What does the "HM3" suffix mean in SMC3K36CAHM3/57?
The HM3 suffix in SMC3K36CAHM3/57 indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. It distinguishes this automotive-grade variant from commercial-grade M3 versions and confirms compliance with automotive reliability and environmental standards.
Is SMC3K36CAHM3/57 suitable for bidirectional signal line protection?
Yes, SMC3K36CAHM3/57 is explicitly designed for bidirectional polarity only, making it ideal for protecting differential pairs, AC-coupled interfaces, or floating sensor outputs. Its symmetrical clamping behavior ensures equal voltage limiting for both positive and negative transients without requiring external polarity configuration.
What is the maximum clamping voltage of SMC3K36CAHM3/57 at rated surge current?
The maximum clamping voltage of SMC3K36CAHM3/57 is 58.1 V at 51.6 A peak pulse current (10/1000 μs waveform). This value is guaranteed per Vishay's Electrical Characteristics table and defines the upper voltage limit imposed on protected circuitry during full-rated transient events.
Does SMC3K36CAHM3/57 require special PCB layout considerations?
Yes - SMC3K36CAHM3/57 should not be mounted on the PCB bottom side using wave soldering, per Vishay's mechanical note. Layout must provide minimum 8.0 mm × 8.0 mm copper pad area for thermal dissipation, and traces to the device should be short and wide to minimize inductance during surge conduction.
How does SMC3K36CAHM3/57 differ from SMC3K36CA-M3/57?
SMC3K36CAHM3/57 is AEC-Q101 qualified and intended for automotive applications, whereas SMC3K36CA-M3/57 is commercial grade without automotive qualification. Both share identical electrical parameters and SMC package, but only SMC3K36CAHM3/57 meets JESD201 whisker testing and automotive stress requirements.
SMC3K36CAHM3/57 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)
SMC3K36CAHM3/57 FAQ
1.How can I place an order for SMC3K36CAHM3/57 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K36CAHM3/57 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 SMC3K36CAHM3/57 reliable?
The price and inventory of SMC3K36CAHM3/57 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K36CAHM3/57 is usually 5 days.
3.What payment methods are accepted for SMC3K36CAHM3/57?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K36CAHM3/57 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K36CAHM3/57?
SMC3K36CAHM3/57 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K36CAHM3/57 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 SMC3K36CAHM3/57?
For technical support, including SMC3K36CAHM3/57 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K36CAHM3/57 requirements.
6.How does Aetrix verify that SMC3K36CAHM3/57 is sourced from the original manufacturer or authorized distributors?
All SMC3K36CAHM3/57 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 SMC3K36CAHM3/57 meets industry standards.
7.What is the process for return or replacement of SMC3K36CAHM3/57?
All SMC3K36CAHM3/57 units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K36CAHM3/57, 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 SMC3K36CAHM3/57 part is unused and in its original packaging.
Return procedure for SMC3K36CAHM3/57:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K36CAHM3/57 Tags
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