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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Vishay General Semiconductor - Diodes Division SMC5K36A-M3/H

Name: SMC5K36A-M3/H
Brand: Vishay General Semiconductor - Diodes Division
SKU: SMC5K36A-M3/H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMC5K36A-M3/H

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-214AB, SMC

Datasheet:: SMC5K36A-M3/H.pdf

Description:: TVS DIODE 36VWM 58.1VC DO214AB

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Product details

Overview

SMC5K36A-M3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features 40.0–44.2 V breakdown voltage (V_BR), 36 V stand-off voltage (V_WM), 58.1 V max clamping voltage at 86.1 A (10/1000 μs), 5000 W peak pulse power, and AEC-Q101 qualification for automotive-grade reliability.

For engineers reviewing the SMC5K36A-M3/H datasheet, SMC5K36A-M3/H pinout, SMC5K36A-M3/H application, or SMC5K36A-M3/H equivalent, this device is selected for high-energy surge suppression on DC power rails and signal lines where fast response (<1 ns), low clamping ratio, and stable junction temperature up to +150 °C are critical design requirements.

Technical Context

This TVS operates as a unidirectional avalanche diode with a sharp reverse-breakdown knee and low dynamic impedance, enabling precise voltage clamping during transient events such as inductive load switching or ESD. Its 10/1000 μs waveform rating delivers 5000 W peak pulse power, while the 8/20 μs rating supports 526 A peak current - both validated per ANSI/IEEE C62.35 standards.

The device uses a planar passivated silicon junction housed in an SMC (DO-214AB) thermally optimized package with R_thJA = 90 °C/W and R_thJM = 4.0 °C/W, ensuring effective heat dissipation under repetitive surge conditions. It meets J-STD-020 MSL Level 1 and passes 30 kV HBM/air-gap ESD per IEC 61000-4-2.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR (min/max)	40.0 V / 44.2 V at 1.0 mA - defines reliable turn-on threshold before clamping begins
V_WM	36 V - maximum continuous reverse operating voltage without leakage degradation
V_C @ I_PPM (10/1000 μs)	58.1 V at 86.1 A - actual clamped voltage seen by protected circuit during standard surge
P_PPM	5000 W - peak transient energy absorption capability under 10/1000 μs waveform
T_J max	+150 °C - maximum junction temperature enabling operation in under-hood automotive environments
ESD immunity	30 kV (HBM & air discharge) - exceeds IEC 61000-4-2 Level 4 for system-level ESD robustness
Package	SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" body length and 2.06 mm pad spacing

Pinout & Package

SMC5K36A-M3/H is a two-terminal unidirectional TVS diode in SMC (DO-214AB) package. The cathode is marked by a color band on the body; the anode is the unmarked end. Leads are matte tin-plated and compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Cathode (banded end)	Protected line connection point	Connected to the line being safeguarded (e.g., 36 V rail); conducts during overvoltage to shunt current to ground
Anode (unbanded end)	Reference/ground return path	Typically tied to system ground or low-impedance return plane; completes clamping current path during transients

Key Features

Feature	Design Value
Unidirectional clamping architecture	Enables integration on positive-rail DC systems without reverse-bias leakage concerns
Low incremental surge resistance	Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a)
AEC-Q101 qualified	Validated for automotive powertrain and body electronics applications requiring zero-failure reliability
Halogen-free & RoHS-compliant (M3 suffix)	Meets global environmental compliance mandates without compromising thermal or electrical performance
UL 497B recognized (E136766)	Confirms safety compliance for use in telecom and industrial equipment requiring certified surge protection

Applications

Automotive Power Rail Protection	Industrial Sensor Interface Protection
Use Scenario: Protecting 36 V battery-fed ECUs against load dump and alternator transients in 24 V commercial vehicles. IC Role / Device Role / Timing Role: Primary clamping element placed between battery input and downstream DC/DC converter input stage. Use Value: Clamps surges up to 5000 W while maintaining V_C ≤ 58.1 V, preventing damage to 40 V-rated input capacitors and MOSFETs.	Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional transient suppression on 4–20 mA loop supply lines exposed to field wiring noise. Use Value: Responds in <1 ns to clamp induced spikes from nearby motor drives, preserving sensor accuracy and ADC integrity.
Telecom DC Power Input	Consumer Power Adapter Output
Use Scenario: Surge protection on +36 V DC input of remote radio head (RRH) power supplies in 5G base stations. IC Role / Device Role / Timing Role: Front-end TVS on primary DC input before bulk capacitor and hot-swap controller. Use Value: Withstands repeated 8/20 μs lightning-induced surges up to 526 A while maintaining UL 497B certification.	Use Scenario: Secondary-side overvoltage suppression on 36 V output of laptop AC/DC adapters. IC Role / Device Role / Timing Role: Final-stage clamping device placed immediately after secondary rectifier and filter cap. Use Value: Prevents output overvoltage from damaging connected devices during no-load or short-circuit recovery events.

Automotive Power Rail Protection

Industrial Sensor Interface Protection

Use Scenario: Protecting 36 V battery-fed ECUs against load dump and alternator transients in 24 V commercial vehicles.

IC Role / Device Role / Timing Role: Primary clamping element placed between battery input and downstream DC/DC converter input stage.

Use Value: Clamps surges up to 5000 W while maintaining V_C ≤ 58.1 V, preventing damage to 40 V-rated input capacitors and MOSFETs.

Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules.

IC Role / Device Role / Timing Role: Bidirectional transient suppression on 4–20 mA loop supply lines exposed to field wiring noise.

Use Value: Responds in <1 ns to clamp induced spikes from nearby motor drives, preserving sensor accuracy and ADC integrity.

Telecom DC Power Input

Consumer Power Adapter Output

Use Scenario: Surge protection on +36 V DC input of remote radio head (RRH) power supplies in 5G base stations.

IC Role / Device Role / Timing Role: Front-end TVS on primary DC input before bulk capacitor and hot-swap controller.

Use Value: Withstands repeated 8/20 μs lightning-induced surges up to 526 A while maintaining UL 497B certification.

Use Scenario: Secondary-side overvoltage suppression on 36 V output of laptop AC/DC adapters.

IC Role / Device Role / Timing Role: Final-stage clamping device placed immediately after secondary rectifier and filter cap.

Use Value: Prevents output overvoltage from damaging connected devices during no-load or short-circuit recovery events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ36A-M3/87A	Lower P_PPM (400 W), smaller SMA package, same V_WM/V_BR range	Suitable for lower-energy surges; limited to non-automotive industrial use due to lack of AEC-Q101	Select when board space is constrained and surge threat level is below ISO 16750-2 Level III
SMCJ36A-M3/87A	Same SMC package, higher P_PPM (1500 W), but only rated to 1500 W (not 5000 W)	Not rated for 5000 W 10/1000 μs waveforms; lacks UL 497B recognition	Choose only if full 5000 W capability is not required and UL certification is unnecessary

Compared with SMAJ36A-M3/87A and SMCJ36A-M3/87A, the SMC5K36A-M3/H delivers 3.3× higher peak pulse power and certified automotive-grade reliability - making it the sole option among the three qualified for under-hood 24 V vehicle systems requiring sustained 5000 W surge handling.

Availability

SMC5K36A-M3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, and telecom DC input applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for SMC5K36A-M3/H 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 application-specific validation.

The SMC5K series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where failure modes must be mitigated under extreme surge conditions.

FAQ

What is the breakdown voltage tolerance for SMC5K36A-M3/H?

The SMC5K36A-M3/H has a specified breakdown voltage (V_BR) range of 40.0 V to 44.2 V at 1.0 mA test current, representing a ±5.5% tolerance about the nominal 36 V stand-off rating. This tight V_BR window ensures predictable clamping onset across production lots and temperature extremes from –55 °C to +150 °C.

Is SMC5K36A-M3/H suitable for bidirectional transient protection?

No - the SMC5K36A-M3/H is a unidirectional TVS diode, intended for protection on positive DC rails referenced to ground. For bidirectional protection (e.g., AC lines or data buses), a dedicated bidirectional variant like SMC5K36CA-M3/H would be required; using SMC5K36A-M3/H in reverse-biased configurations risks premature conduction or failure.

Does SMC5K36A-M3/H meet automotive qualification standards?

Yes - the SMC5K36A-M3/H carries the M3 suffix indicating halogen-free, RoHS-compliant construction and is AEC-Q101 qualified per the Vishay documentation. However, note that AEC-Q101 qualification applies to the SMC5K10A–SMC5K20A variants by default; SMC5K36A-M3/H inherits full qualification via family-level testing and process control as confirmed in Document Number 87742, Revision 09-Jan-2024.

What is the maximum clamping voltage of SMC5K36A-M3/H at 8/20 μs surge?

The SMC5K36A-M3/H has a maximum clamping voltage (V_C) of 76.0 V at 526 A under the 8/20 μs surge waveform. This value is measured per IEC 61000-4-5 Annex A and reflects the worst-case voltage imposed on protected circuitry during high-speed lightning-induced transients.

Can SMC5K36A-M3/H be used in parallel for higher surge current handling?

Parallel operation of SMC5K36A-M3/H devices is not recommended without external current-sharing resistors or matched V_BR sorting, due to inherent parameter variation (±5.5% V_BR). Uneven current division may cause one device to absorb disproportionate energy and fail prematurely. For higher current needs, select a single higher-rated device such as SMC5K40A-M3/H instead.

SMC5K36A-M3/H 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):: 36V

Voltage - Breakdown (Min):: 40V

Voltage - Clamping (Max) @ Ipp:: 58.1V

Current - Peak Pulse (10/1000µs):: 86.1A

Power - Peak Pulse:: 5000W (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)

SMC5K36A-M3/H FAQ

1.How can I place an order for SMC5K36A-M3/H through Aetrix?

Please submit a Request for Quotation (RFQ) for SMC5K36A-M3/H 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 SMC5K36A-M3/H reliable?

The price and inventory of SMC5K36A-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K36A-M3/H is usually 5 days.

3.What payment methods are accepted for SMC5K36A-M3/H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K36A-M3/H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMC5K36A-M3/H?

SMC5K36A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMC5K36A-M3/H 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 SMC5K36A-M3/H?

For technical support, including SMC5K36A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K36A-M3/H requirements.

6.How does Aetrix verify that SMC5K36A-M3/H is sourced from the original manufacturer or authorized distributors?

All SMC5K36A-M3/H 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 SMC5K36A-M3/H meets industry standards.

7.What is the process for return or replacement of SMC5K36A-M3/H?

All SMC5K36A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K36A-M3/H, 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 SMC5K36A-M3/H part is unused and in its original packaging.

Return procedure for SMC5K36A-M3/H:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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