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Vishay General Semiconductor - Diodes Division SM6S36ATHE3/I
- Part No.:
- SM6S36ATHE3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM6S36ATHE3/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,189
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Product details
Overview
SM6S36ATHE3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection. It features a 40.0 V minimum breakdown voltage (VBR), 58.1 V maximum clamping voltage (VC) at 79 A peak pulse current, 4600 W peak pulse power (10/1000 µs), AEC-Q101 qualification, and DO-218AC package with heatsink-anode polarity.
For engineers reviewing the SM6S36ATHE3/I datasheet, SM6S36ATHE3/I pinout, SM6S36ATHE3/I application, or SM6S36ATHE3/I equivalent, this device is selected for high-reliability 12 V/24 V automotive power rail protection where junction temperature up to 175 °C, low leakage (<10 µA at VWM), and ISO7637-2 compliance are required.
Technical Context
The SM6S36ATHE3/I employs passivated anisotropic rectifier technology optimized for high-temperature stability and surge robustness. Its unidirectional configuration places the metal heatsink as the anode terminal, enabling direct thermal coupling to PCB copper for enhanced power dissipation under repetitive transients.
It delivers 4600 W peak pulse power with 10/1000 µs waveform and maintains stable VBR across -55 °C to +175 °C operating range, supported by a typical VBR temperature coefficient of 0.091 %/°C and thermal resistance RθJC = 0.95 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 40.0 V - Ensures reliable triggering above nominal 36 V system stand-off voltage |
| VC (max) @ IPPM | 58.1 V - Limits protected circuit voltage during 79 A transient, preserving downstream ICs |
| PPPM (10/1000 µs) | 4600 W - Handles severe automotive load dump surges without failure |
| IFSM | 600 A - Withstands 8.3 ms half-sine surge without bond wire fusing |
| TJ max | +175 °C - Enables placement near hot engine-control electronics without derating |
| VWM | 36.0 V - Matches 24 V automotive nominal systems with margin for ripple and tolerance |
| RθJC | 0.95 °C/W - Allows effective thermal management via heatsink-mounted PCB layout |
Pinout & Package
Package: DO-218AC - Surface-mount, thermally enhanced case with integral metal heatsink; anode connected to heatsink (Lead 2), cathode on molded lead (Lead 1); RoHS-compliant matte tin plating; MSL Level 1, 245 °C reflow capable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (molded) | Cathode | Connected to protected circuit's positive rail; reverse-biased during normal operation |
| Lead 2 / metal heatsink | Anode | Must be soldered to large copper pour for thermal conduction; defines polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 |
| Junction passivation | Reduces long-term parameter drift and leakage increase under high-temperature bias stress |
| ISO7637-2 compliance | Meets Pulse 5a (load dump) requirements when mounted with adequate PCB copper area |
| Low VF (≤1.9 V @ 100 A) | Minimizes forward conduction loss during bidirectional surge events or miswiring scenarios |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns or baking preconditioning |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Line Protection |
|---|---|
Use Scenario: Protects microcontroller power rails in gasoline/diesel ECUs exposed to alternator load dump transients up to 40 V. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery feed and DC-DC input stage. Use Value: Clamps transients to ≤58.1 V within 1 ns, preventing overvoltage damage to 40 V-rated input capacitors and regulators. |
Use Scenario: Shields BCM power supply from battery line spikes during jump-starts, relay switching, and generator regulation faults. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on 12 V main input before fuse and pre-regulator. Use Value: Absorbs 4600 W surge energy without degradation, maintaining <10 µA leakage at 36 V to preserve sleep-mode current budget. |
| Advanced Driver Assistance Systems (ADAS) Camera Power Rail | Electric Power Steering (EPS) Motor Driver Supply Protection |
Use Scenario: Secures 12 V input to image sensor SoCs in rear-view and surround-view cameras subject to vehicle-level EMI and load dump. IC Role / Device Role / Timing Role: Fast-response transient clamp located adjacent to connector entry point on camera PCB. Use Value: Achieves sub-1 ns response time and 0.091 %/°C VBR stability, ensuring consistent clamping across under-hood temperature extremes. |
Use Scenario: Guards gate driver and MCU supply rails in EPS modules where motor back-EMF and PWM switching induce high dv/dt noise. IC Role / Device Role / Timing Role: High-energy TVS placed at H-bridge power input to suppress inductive kickback and bus overvoltage. Use Value: Supports 600 A non-repetitive surge capability and 175 °C junction rating, enabling operation in sealed, high-ambient EPS enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S36AHM3 | Same VBR, VC, and PPPM; HM3 suffix denotes halogen-free molding compound and enhanced whisker resistance (JESD201 Class 2). | Preferred for new designs targeting halogen-free compliance and extended whisker reliability in high-vibration environments. | Select SM6S36AHM3 for new automotive programs requiring updated material compliance; SM6S36ATHE3/I remains valid for legacy production. |
| SMA6J36A | Lower PPPM (600 W vs. 4600 W); SMA package (DO-214AC); higher VC (64.5 V); not AEC-Q101 qualified. | Suitable only for low-energy consumer or industrial applications-not for automotive load dump. | Use SMA6J36A only in cost-sensitive, non-automotive applications with <1 kV surge exposure; avoid where ISO7637-2 or AEC-Q101 is mandated. |
Compared with SM6S36AHM3, the SM6S36ATHE3/I offers identical electrical performance but lacks halogen-free certification and latest whisker test compliance; compared with SMA6J36A, it delivers >7× higher surge power handling and automotive-grade qualification-critical for under-hood deployment.
Availability
SM6S36ATHE3/I is available at Aetrix Electronics and suitable for automotive ECU protection, body control module design, and ADAS camera power conditioning requiring stable component supply and long-term lifecycle support.
Supply support for SM6S36ATHE3/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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SM6S36ATHE3/I belongs to Vishay's PAR® TVS family, engineered specifically for high-energy automotive load dump protection with emphasis on thermal robustness, AEC-Q101 validation, and DO-218AC mechanical reliability.
FAQ
What is the maximum clamping voltage of the SM6S36ATHE3/I at its rated peak pulse current?
The SM6S36ATHE3/I has a maximum clamping voltage (VC) of 58.1 V when subjected to its specified peak pulse current of 79 A using a 10/1000 µs waveform. This value is measured per the conditions defined in the Vishay datasheet document 87735 and ensures downstream components remain within safe operating voltage limits during transient events.
Is the SM6S36ATHE3/I qualified for automotive applications?
Yes, the SM6S36ATHE3/I is AEC-Q101 qualified and explicitly intended for automotive use. It meets ISO7637-2 load dump requirements, operates reliably from -55 °C to +175 °C, and carries the HE3 suffix denoting RoHS compliance and AEC-Q101 qualification per Vishay's ordering nomenclature.
What does the "HE3" suffix mean in SM6S36ATHE3/I?
The "HE3" suffix in SM6S36ATHE3/I indicates RoHS-compliant construction, AEC-Q101 qualification, matte tin-plated leads compliant with J-STD-002 and JESD22-B102, and passing JESD201 Class 2 whisker testing. It also specifies packaging in 13-inch plastic tape and reel with anode oriented toward sprocket holes.
Can the SM6S36ATHE3/I replace the SM6S36AHM3 in existing designs?
The SM6S36ATHE3/I shares identical electrical specifications and DO-218AC mechanical form factor with SM6S36AHM3, making it functionally interchangeable in legacy layouts. However, SM6S36AHM3 adds halogen-free materials and enhanced whisker resistance-so SM6S36ATHE3/I is acceptable for continuity but not for new halogen-free design requirements.
What is the thermal resistance from junction to case for the SM6S36ATHE3/I?
The SM6S36ATHE3/I has a typical thermal resistance from junction to case (RθJC) of 0.95 °C/W, as specified in the Vishay datasheet. This low value enables efficient heat transfer from the silicon die to the metal heatsink (anode terminal), supporting sustained power dissipation when mounted on adequately sized PCB copper areas.
SM6S36ATHE3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AC
- 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):
- 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-218AC
SM6S36ATHE3/I FAQ
1.How can I place an order for SM6S36ATHE3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S36ATHE3/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 SM6S36ATHE3/I reliable?
The price and inventory of SM6S36ATHE3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S36ATHE3/I is usually 5 days.
3.What payment methods are accepted for SM6S36ATHE3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S36ATHE3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S36ATHE3/I?
SM6S36ATHE3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S36ATHE3/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 SM6S36ATHE3/I?
For technical support, including SM6S36ATHE3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S36ATHE3/I requirements.
6.How does Aetrix verify that SM6S36ATHE3/I is sourced from the original manufacturer or authorized distributors?
All SM6S36ATHE3/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 SM6S36ATHE3/I meets industry standards.
7.What is the process for return or replacement of SM6S36ATHE3/I?
All SM6S36ATHE3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6S36ATHE3/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 SM6S36ATHE3/I part is unused and in its original packaging.
Return procedure for SM6S36ATHE3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S36ATHE3/I Tags
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DESD3V3E1BL-7B
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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