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Vishay General Semiconductor - Diodes Division SM5S36AHE3/2D
- Part No.:
- SM5S36AHE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S36AHE3/2D.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,427
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Product details
Overview
SM5S36AHE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for automotive load dump protection. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown range (VBR), 58.1 V clamping voltage at 62 A peak pulse current, 3600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the SM5S36AHE3/2D datasheet, SM5S36AHE3/2D pinout, SM5S36AHE3/2D application, or SM5S36AHE3/2D equivalent, key selection criteria include unidirectional polarity, DO-218AB package thermal performance (RθJC = 1.0 °C/W), 175 °C junction rating, low leakage (<10 µA at VWM), and ISO7637-2 compliance for automotive transients.
Technical Context
The SM5S36AHE3/2D employs passivated anisotropic rectifier technology optimized for high-temperature stability and surge robustness. Its unidirectional architecture uses the metal heatsink as anode, enabling efficient thermal dissipation in high-power transient events such as 10 ms exponential load dump waveforms.
It delivers 3600 W peak pulse power under 10/1000 µs conditions and sustains 2800 W under longer 10/10 000 µs pulses, with clamping performance validated up to TJ = 175 °C. The device meets MSL Level 1 per J-STD-020 and passes JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36.0 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 40.0 / 44.2 V - Breakdown occurs within this range at 5 mA test current; ensures predictable turn-on margin |
| VC @ IPPM | 58.1 V - Clamping voltage at 62 A peak pulse current; limits downstream voltage stress during transients |
| PPPM (10/1000 µs) | 3600 W - Peak surge power handling capability for short-duration automotive spikes |
| TJ max. | +175 °C - Enables placement near hot engine compartments without derating concerns |
| RθJC | 1.0 °C/W - Low thermal resistance from junction to case supports high-power dissipation on heatsinked PCBs |
| Polarity | Unidirectional - Anode connected to heatsink; blocks reverse voltage, conducts forward surges to ground |
Pinout & Package
Package: DO-218AB - Surface-mount, thermally enhanced case with integral metal heatsink; matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected circuit node; carries transient current during clamping |
| Lead 2 / Metal Heatsink | Anode | Primary thermal path and electrical connection to system ground or low-impedance return |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR and low leakage over temperature and lifetime |
| AEC-Q101 qualification | Validated reliability for automotive electronics including engine control units and body modules |
| ISO7637-2 compliance | Meets load dump surge requirements for 12 V vehicle systems without external conditioning |
| MSL Level 1 rating | Reflow-compatible up to 245 °C peak without moisture sensitivity concerns |
| Low VF at high IFSM | ≤2.0 V forward voltage at 100 A surge enables minimal conduction loss during fault clearing |
Applications
| Engine Control Unit (ECU) Protection | Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Protecting microcontroller power rails against alternator load dump transients in gasoline/diesel engine bays. IC Role / Device Role / Timing Role: Unidirectional TVS clamps 12 V supply rail to safe levels during 35–40 V, 400 ms load dump events. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies by limiting rail voltage to ≤58.1 V during 62 A surges. | Use Scenario: Safeguarding BCM input from battery line transients caused by relay switching and motor actuation. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed directly at 12 V input connector to absorb inductive kickback. Use Value: Maintains functional safety integrity by suppressing >100 V spikes down to <58.1 V within nanoseconds, preserving CAN/LIN communication stability. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) ECU |
Use Scenario: Securing image sensor and ISP power domains in front/rear-view cameras exposed to harsh vehicle environments. IC Role / Device Role / Timing Role: Primary transient suppressor on 12 V input stage, preceding DC/DC converters and LDOs. Use Value: Ensures uninterrupted operation during cold-cranking and jump-start events due to 175 °C junction rating and low leakage (<10 µA). | Use Scenario: Protecting high-current motor driver ICs and position sensors in EPS systems subject to repeated load dumps. IC Role / Device Role / Timing Role: High-energy TVS placed between battery fuse and H-bridge power stage to shunt surge current away from gate drivers. Use Value: Sustains 3600 W peak power without degradation, enabling reliable torque assist even after multiple 10/1000 µs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5AT | DO-214AC package; lower PPPM (400 W); higher VC (60.0 V); same VWM/VBR range | Limited to lower-energy transients; unsuitable for full ISO7637-2 load dump | Select only for cost-sensitive non-automotive applications with <500 W surge requirements |
| 1.5KE36CA | Through-hole DO-201 package; bidirectional; 1500 W PPPM; higher RθJA; no AEC-Q101 | Requires PCB real estate and manual assembly; lacks automotive qualification and thermal performance | Use only in legacy industrial designs where surface-mount and AEC-Q101 are not required |
Compared with SMAJ36A-E3/5AT and 1.5KE36CA, the SM5S36AHE3/2D provides 9× higher surge power, DO-218AB thermal efficiency (RθJC = 1.0 °C/W), and AEC-Q101 validation-making it the sole choice for modern automotive load dump protection where space, reliability, and regulatory compliance are critical.
Availability
SM5S36AHE3/2D is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera systems, and electric power steering ECUs requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for SM5S36AHE3/2D 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, MOSFETs, and optoelectronics with emphasis on high-reliability and automotive-grade components.
The SM5SxxA series is part of Vishay's PAR® TVS platform, engineered specifically for automotive load dump and inductive switching transient suppression in 12 V systems with stringent thermal and qualification requirements.
FAQ
What is the clamping voltage of the SM5S36AHE3/2D at its rated peak pulse current?
The SM5S36AHE3/2D has a maximum clamping voltage (VC) of 58.1 V when subjected to its specified peak pulse current (IPPM) of 62 A under a 10/1000 µs waveform. This value is measured at TA = 25 °C and ensures downstream circuitry remains within safe operating limits during standardized surge events. The SM5S36AHE3/2D maintains consistent clamping performance across its qualified temperature range up to TJ = 175 °C.
Is the SM5S36AHE3/2D suitable for bidirectional transient protection?
No, the SM5S36AHE3/2D is a unidirectional TVS diode, with the metal heatsink serving as the anode and Lead 1 as the cathode. It is designed to protect against positive transients on a grounded-line configuration. For bidirectional protection, a different device such as a symmetric TVS or a pair of unidirectional devices would be required. The SM5S36AHE3/2D datasheet explicitly states "Available in uni-directional polarity only."
Does the SM5S36AHE3/2D meet automotive qualification standards?
Yes, the SM5S36AHE3/2D is AEC-Q101 qualified and rated for operation from –55 °C to +175 °C. It also meets ISO7637-2 surge test requirements for automotive load dump and inductive switching transients, and complies with MSL Level 1 per J-STD-020. These qualifications are confirmed in the Vishay document 88382, revision 22-Jul-16.
What is the thermal resistance from junction to case for the SM5S36AHE3/2D?
The SM5S36AHE3/2D has a typical thermal resistance from junction to case (RθJC) of 1.0 °C/W, as specified in the Thermal Characteristics table of the Vishay datasheet. This low value enables effective heat transfer to a PCB copper pour or external heatsink, supporting sustained power dissipation in high-temperature automotive environments. The DO-218AB package's metal heatsink is integral to achieving this performance.
How does the SM5S36AHE3/2D differ from the non-A version (SM5S36HE3/2D)?
The SM5S36AHE3/2D has a tighter breakdown voltage tolerance (40.0–44.2 V) compared to the SM5S36HE3/2D (40.0–48.9 V), resulting in more precise clamping behavior and improved consistency in production systems. Both share identical package, power ratings, and AEC-Q101 qualification, but the "A" suffix denotes ±5 % VBR tolerance, making SM5S36AHE3/2D preferable for designs requiring tighter voltage control during transient events.
SM5S36AHE3/2D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 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
SM5S36AHE3/2D FAQ
1.How can I place an order for SM5S36AHE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S36AHE3/2D 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 SM5S36AHE3/2D reliable?
The price and inventory of SM5S36AHE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S36AHE3/2D is usually 5 days.
3.What payment methods are accepted for SM5S36AHE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S36AHE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S36AHE3/2D?
SM5S36AHE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S36AHE3/2D 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 SM5S36AHE3/2D?
For technical support, including SM5S36AHE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S36AHE3/2D requirements.
6.How does Aetrix verify that SM5S36AHE3/2D is sourced from the original manufacturer or authorized distributors?
All SM5S36AHE3/2D 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 SM5S36AHE3/2D meets industry standards.
7.What is the process for return or replacement of SM5S36AHE3/2D?
All SM5S36AHE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM5S36AHE3/2D, 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 SM5S36AHE3/2D part is unused and in its original packaging.
Return procedure for SM5S36AHE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S36AHE3/2D Tags
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