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Vishay General Semiconductor - Diodes Division SM5S36CAHM3/I
- Part No.:
- SM5S36CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S36CAHM3/I.pdf
- Description:
- 3600 W BI-DIRECTIONAL TVS IS DO-
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SM5S36CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in DO-218AC package, designed for automotive load dump protection with 40.0–44.2 V breakdown voltage (VBR), 36.0 V stand-off voltage (VWM), and 3600 W peak pulse power (10/1000 μs). It operates from −55 °C to +175 °C and meets AEC-Q101 qualification.
For engineers reviewing the SM5S36CAHM3/I datasheet, SM5S36CAHM3/I pinout, SM5S36CAHM3/I application, or SM5S36CAHM3/I equivalent, this device is selected for high-reliability 12 V/24 V automotive power rail protection where low leakage (<10 μA at VWM), tight VBR tolerance (±5%), and ISO 7637-2 compliance are critical.
Technical Context
This TVS diode uses silicon avalanche junction technology optimized for fast clamping response (<1 ns) under high-energy transients. Its DO-218AC package integrates a metal heatsink terminal for low thermal resistance (RθJM = 0.45 °C/W), enabling robust surge handling without external heatsinking in constrained automotive PCB layouts.
The bidirectional configuration supports symmetrical clamping on both polarities, eliminating polarity marking requirements. Its 175 °C maximum junction temperature and MSL Level 1 rating support reflow soldering at 245 °C peak and long-term operation in engine bay environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.0 / 42.1 / 44.2 V - ensures reliable triggering above system nominal voltage while avoiding false trips during normal transients |
| VWM | 36.0 V - defines maximum continuous reverse operating voltage before leakage exceeds 10 μA at 25 °C |
| VC @ IPPM | 58.1 V - clamping voltage at 62.0 A peak pulse current (10/1000 μs), limiting downstream IC stress during load dump |
| PPPM (10/1000 μs) | 3600 W - delivers high single-pulse energy absorption capability per ISO 7637-2 Pulse 5a test conditions |
| IPPM | 62.0 A - peak surge current capacity at rated clamping voltage, supporting >100× overvoltage suppression margin |
| TJ max. | +175 °C - enables placement near heat sources (e.g., power modules) without derating in under-hood applications |
| Leakage @ VWM | <10 μA at 25 °C - minimizes standby power loss in always-on vehicle networks (e.g., CAN bus nodes) |
Pinout & Package
Package: DO-218AC - surface-mount, halogen-free, AEC-Q101 qualified package with integrated metal heatsink terminal (Lead 2) and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Polarity is bidirectional; no cathode band marking required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode / Cathode (bidirectional) | Common connection point for symmetrical clamping; connects to protected line (e.g., battery rail) |
| Lead 2 / Metal Heatsink | Thermal & Electrical Reference | Low-inductance path to PCB ground plane; primary thermal conduction route (RθJM = 0.45 °C/W) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| ISO 7637-2 & ISO 16750-2 compliance | Guaranteed performance against load dump (Pulse 5a), jump start, and supply interruption transients in 12 V systems |
| MSL Level 1 (245 °C peak) | Enables standard lead-free reflow assembly without moisture sensitivity concerns or baking requirements |
| RoHS-compliant, halogen-free, whisker-resistant | Meets automotive environmental standards (JESD 201 Class 2) and eliminates tin whisker risk in long-life deployments |
| DO-218AC metal heatsink | Reduces thermal impedance by >90% vs. standard SOD packages, sustaining 5 W steady-state dissipation on FR4 PCB |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Suppresses 120 V/400 ms load dump transients generated when alternator field circuit is interrupted during engine operation. IC Role / Device Role / Timing Role: Primary clamping device placed directly at battery input of body control module or infotainment head unit. Use Value: Limits rail voltage to ≤58.1 V during 3600 W surge, preventing damage to downstream DC/DC converters and microcontrollers. |
Use Scenario: Protects ECU main 5 V/3.3 V regulator inputs from coupled transients originating from fuel injector or solenoid switching. IC Role / Device Role / Timing Role: Secondary TVS positioned after bulk filtering but before LDO input, responding within <1 ns to fast-rising edges. Use Value: Maintains VWM = 36.0 V to avoid interference with normal 12 V supply ripple while clamping sub-100 ns spikes. |
| ADAS Camera Power Rail | Telematics Control Unit (TCU) |
Use Scenario: Shields 12 V input of rear-view or surround-view camera modules mounted near chassis ground points. IC Role / Device Role / Timing Role: Bidirectional clamp absorbing both positive and negative transients induced by nearby motor actuation. Use Value: Eliminates need for separate unidirectional devices; 175 °C rating supports operation behind bumper or fender liners. |
Use Scenario: Secures LTE/V2X modem power input against ignition noise and antenna coupling in connected vehicle gateways. IC Role / Device Role / Timing Role: First-line defense at TCU main connector, coordinated with upstream fuse and downstream LC filter. Use Value: 10 μA leakage at VWM prevents battery drain in parked mode; DO-218AC footprint allows compact layout near connector. |
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 PPPM (400 W), DO-214AC package, RθJA = 110 °C/W, no metal heatsink terminal | Suitable for lower-energy transients (e.g., ISO 16750-2 Pulse 1/2); not recommended for load dump | Select SMAJ36CA only for cost-sensitive non-automotive industrial applications with <500 W surge requirements. |
| SMCJ36CA | Same DO-218AC package, higher PPPM (1500 W), VC = 58.1 V, but rated only to 150 °C TJ max | Lacks AEC-Q101 qualification and 175 °C operation; limited to under-dash or cabin-mounted modules | Choose SMCJ36CA for non-critical automotive subsystems where full engine-bay qualification is unnecessary. |
Compared with SMAJ36CA and SMCJ36CA, SM5S36CAHM3/I uniquely combines 3600 W surge capacity, 175 °C operation, AEC-Q101 qualification, and ISO 7637-2 compliance-making it the only option qualified for front-end automotive load dump protection without derating or supplemental cooling.
Availability
SM5S36CAHM3/I is available at Aetrix Electronics and suitable for automotive electronics, engine control units, and ADAS camera modules requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for SM5S36CAHM3/I 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, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SM5S series is engineered specifically for automotive-grade transient suppression, targeting load dump, jump-start, and ESD events in 12 V/24 V power networks with zero maintenance and lifetime reliability.
FAQ
What is the clamping voltage of SM5S36CAHM3/I at its rated peak pulse current?
The SM5S36CAHM3/I has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 62.0 A under the standard 10/1000 μs waveform. This value is measured per Figure 4 in the Vishay datasheet 98458 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Is SM5S36CAHM3/I qualified for automotive use per AEC-Q101?
Yes, SM5S36CAHM3/I carries the "H" suffix in its ordering code, confirming full AEC-Q101 qualification. This includes stress testing for temperature cycling, high-temperature operating life, and mechanical shock-validating its suitability for under-hood and safety-critical automotive applications as documented in Vishay's qualification report referenced in datasheet 98458.
What does the "HM3" suffix indicate in SM5S36CAHM3/I?
The "HM3" suffix in SM5S36CAHM3/I denotes three key attributes: "H" confirms AEC-Q101 qualification; "M3" specifies halogen-free, RoHS-compliant construction with matte tin plating and JESD 201 Class 2 whisker resistance; and the "/I" indicates packaging in 13″ tape-and-reel with anode orientation toward sprocket holes per Vishay's ordering table.
Can SM5S36CAHM3/I replace SM5S36A in existing designs?
No-SM5S36CAHM3/I is bidirectional (CA), whereas SM5S36A is unidirectional (A). Substituting them would compromise protection on negative transients. The "CA" designation is explicit in the part number and verified in Table 1 of datasheet 98458, where all CA variants list bidirectional polarity and symmetric VBR/VC characteristics.
What is the thermal resistance from junction to mount (RθJM) for SM5S36CAHM3/I?
The SM5S36CAHM3/I has a typical junction-to-mount thermal resistance (RθJM) of 0.45 °C/W, measured using the Transient Dual Interface Method (TDIM) per JEDEC 51-14. This low value is enabled by the DO-218AC package's integral metal heatsink terminal (Lead 2), allowing efficient heat transfer to the PCB ground plane without additional thermal vias.
SM5S36CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- 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):
- 62A
- Power - Peak Pulse:
- 3600W (3.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM5S36CAHM3/I FAQ
1.How can I place an order for SM5S36CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S36CAHM3/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 SM5S36CAHM3/I reliable?
The price and inventory of SM5S36CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S36CAHM3/I is usually 5 days.
3.What payment methods are accepted for SM5S36CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S36CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S36CAHM3/I?
SM5S36CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S36CAHM3/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 SM5S36CAHM3/I?
For technical support, including SM5S36CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S36CAHM3/I requirements.
6.How does Aetrix verify that SM5S36CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SM5S36CAHM3/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 SM5S36CAHM3/I meets industry standards.
7.What is the process for return or replacement of SM5S36CAHM3/I?
All SM5S36CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S36CAHM3/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 SM5S36CAHM3/I part is unused and in its original packaging.
Return procedure for SM5S36CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S36CAHM3/I Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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