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Vishay General Semiconductor - Diodes Division SM6S36AHE3_A/I
- Part No.:
- SM6S36AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S36AHE3_A/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:725
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Product details
Overview
SM6S36AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in DO-218AB package, rated for 36 V stand-off voltage (VWM), 44.2 V maximum breakdown voltage (VBR), and 4600 W peak pulse power (10/1000 μs). It delivers 79 A peak pulse current and clamps to 58.1 V under surge, with AEC-Q101 qualification and 175 °C junction capability - designed specifically for automotive load dump protection.
For engineers reviewing the SM6S36AHE3_A/I datasheet, SM6S36AHE3_A/I pinout, SM6S36AHE3_A/I application, or SM6S36AHE3_A/I equivalent, key selection criteria include unidirectional polarity, DO-218AB thermal performance (RθJM = 0.45 °C/W), ISO7637-2 compliance, low leakage (<10 μA at VWM), and 175 °C operation for under-hood automotive electronics.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under high-energy transients while maintaining low forward voltage drop (≤1.9 V @ 100 A) and low leakage across temperature. Its DO-218AB package integrates a metal heatsink as the anode terminal, enabling efficient thermal conduction to PCB copper.
The device operates within -55 °C to +175 °C junction range and meets MSL Level 1 (245 °C peak reflow). It is qualified per AEC-Q101 and supports automotive load dump protection per ISO7637-2 test conditions - not intended for new designs due to Vishay's "Not For New Designs" status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (max) | 44.2 V - guaranteed breakdown threshold at 5 mA test current, defining turn-on precision |
| VC (max) | 58.1 V - clamping voltage at 79 A IPPM (10/1000 μs), limiting downstream voltage stress |
| PPPM (10/1000 μs) | 4600 W - peak transient energy absorption capacity without failure |
| TJ max | +175 °C - enables placement near hot engine control units without derating |
| RθJM | 0.45 °C/W - low junction-to-mount thermal resistance ensures effective heat transfer to heatsink plane |
| Leakage (ID) | <10 μA at VWM, 25 °C - minimizes standby power loss in always-on vehicle systems |
Pinout & Package
Package: DO-218AB - surface-mount, anode-heatsink configuration with matte tin-plated leads; meets UL 94 V-0, JESD201 Class 2 whisker resistance, and J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected circuit node; carries transient current into device during clamping |
| Lead 2 / Metal Heatsink | Anode | Primary thermal path and electrical return; must be soldered to large copper area for RθJM optimization |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive electronics including engine control, body modules, and ADAS sensors |
| Junction temperature rating up to 175 °C | Enables direct mounting on high-temperature PCB zones without thermal derating penalties |
| ISO7637-2 surge compliance | Meets automotive load dump immunity requirements (Pulse 5a/b) when properly mounted |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage margin between breakdown and clamp, improving system-level protection headroom |
| MSL Level 1 rating | Allows standard SMT reflow without moisture sensitivity concerns or baking preconditioning |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Vehicle alternator disconnection during operation causes 12 V system voltage spikes up to 60 V lasting ~400 ms. IC Role / Device Role / Timing Role: SM6S36AHE3_A/I acts as primary clamping element at battery input rail of power management ICs. Use Value: Clamps transients to ≤58.1 V within nanoseconds, preventing damage to 40 V-rated DC-DC controllers and microcontrollers. |
Use Scenario: ECU power supply exposed to switching noise and inductive kickback from solenoids, fuel injectors, and relays. IC Role / Device Role / Timing Role: SM6S36AHE3_A/I placed upstream of LDO regulators and CAN transceivers to absorb repetitive surges. Use Value: Withstands ≥150 pulses at rated IPPM and maintains <10 μA leakage at 36 V, ensuring stable bias for analog sensor interfaces. |
| Body Control Module (BCM) Power Rail | ADAS Camera Power Input Protection |
Use Scenario: BCM supplies power to door locks, lighting, and HVAC; subject to long-duration transients during jump-starts or battery reversal events. IC Role / Device Role / Timing Role: SM6S36AHE3_A/I serves as first-line defense on 12 V input, coordinated with fuse and upstream filter. Use Value: 4600 W PPPM rating handles multi-pulse load dump sequences without degradation; DO-218AB heatsink interface sustains 175 °C ambient. |
Use Scenario: Front-facing camera module powered directly from vehicle battery, requiring robust immunity against ignition noise and alternator ripple. IC Role / Device Role / Timing Role: SM6S36AHE3_A/I deployed at camera module's DC input connector to suppress fast-rising transients before PMIC stage. Use Value: 10/1000 μs clamping response time and 58.1 V VC limit protect 3.3 V image sensor rails via cascaded regulation, avoiding latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S36AHM3 | Same VWM/VBR/PPPM specs; HM3 suffix indicates enhanced material category (halogen-free, RoHS-compliant, same AEC-Q101 grade) | Identical use cases; preferred for new designs where HE3 is discontinued | Select SM6S36AHM3 for new automotive programs requiring full halogen-free compliance and ongoing production support. |
| SMA6J36A | Lower PPPM (600 W), SMA package (smaller footprint, higher RθJA = 85 °C/W), same VWM/VBR range | Suitable for space-constrained non-critical nodes; not recommended for high-energy load dump | Use SMA6J36A only in secondary protection or low-surge industrial applications - not for primary automotive battery rail. |
Compared with SM6S36AHE3_A/I, SM6S36AHM3 offers identical electrical and thermal performance with updated environmental compliance, while SMA6J36A trades surge robustness and thermal capability for compact size - making the former a direct design-in replacement and the latter a functional alternative only in de-rated contexts.
Availability
SM6S36AHE3_A/I is available at Aetrix Electronics and suitable for automotive load dump protection, engine control unit (ECU) input hardening, and body control module (BCM) power rail stabilization requiring stable component supply across extended temperature and high-reliability environments.
Supply support for SM6S36AHE3_A/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on automotive, industrial, and computing applications.
The SM6SxxA family is engineered for high-energy transient suppression in harsh automotive environments, targeting ISO7637-2 compliance and AEC-Q101 reliability - with DO-218AB packaging optimized for thermal dissipation in under-hood electronics.
FAQ
What is the maximum clamping voltage of SM6S36AHE3_A/I at its rated peak pulse current?
The SM6S36AHE3_A/I has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current of 79 A under the 10/1000 μs waveform. This value is measured at TC = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance remains stable across temperature due to the device's low VBR temperature coefficient (0.091 %/°C).
Is SM6S36AHE3_A/I suitable for new automotive designs?
No - Vishay explicitly marks SM6S36AHE3_A/I as "Not For New Designs" in its official documentation (Document Number: 88384, Revision: 06-Feb-2026). The recommended alternative is SM6S36AHM3, which shares identical electrical specifications but features updated material compliance and ongoing production support. Engineers designing new automotive ECUs or BCMs should migrate to the HM3 variant.
What does the 'HE3' suffix indicate in SM6S36AHE3_A/I?
The 'HE3' suffix in SM6S36AHE3_A/I denotes RoHS-compliant, halogen-free construction with matte tin-plated leads that meet JESD201 Class 2 whisker resistance and J-STD-002 solderability standards. The 'H' confirms AEC-Q101 qualification, and 'E3' specifies lead (Pb)-free, non-halogen termination - critical for automotive supply chain compliance and long-term reliability.
How is thermal management implemented for SM6S36AHE3_A/I in high-power surge scenarios?
SM6S36AHE3_A/I relies on its DO-218AB package's integrated metal heatsink (anode terminal) for thermal conduction. With a junction-to-mount thermal resistance (RθJM) of 0.45 °C/W, effective heat transfer requires soldering Lead 2 to a minimum 100 mm² copper area. This configuration enables sustained operation at TJ = 175 °C and supports repeated 4600 W surge events without thermal runaway.
Does SM6S36AHE3_A/I meet ISO7637-2 requirements for automotive load dump?
Yes - SM6S36AHE3_A/I is specified to meet ISO7637-2 surge requirements, particularly Pulse 5a (load dump) under defined test conditions. Its 4600 W peak pulse power rating, 58.1 V clamping voltage, and 175 °C junction capability collectively ensure compliance when mounted per Vishay's recommended layout (anode heatsink to large copper plane, minimal trace inductance). Actual validation must be performed in-system per vehicle manufacturer requirements.
SM6S36AHE3_A/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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 79A
- Power - Peak Pulse:
- 4600W (4.6kW)
- 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
SM6S36AHE3_A/I FAQ
1.How can I place an order for SM6S36AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S36AHE3_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 SM6S36AHE3_A/I reliable?
The price and inventory of SM6S36AHE3_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 SM6S36AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM6S36AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S36AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S36AHE3_A/I?
SM6S36AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S36AHE3_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 SM6S36AHE3_A/I?
For technical support, including SM6S36AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S36AHE3_A/I requirements.
6.How does Aetrix verify that SM6S36AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6S36AHE3_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 SM6S36AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM6S36AHE3_A/I?
All SM6S36AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6S36AHE3_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 SM6S36AHE3_A/I part is unused and in its original packaging.
Return procedure for SM6S36AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S36AHE3_A/I Tags
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