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Vishay General Semiconductor - Diodes Division SM8S36A-7001HE4/2N
- Part No.:
- SM8S36A-7001HE4/2N
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM8S36A-7001HE4/2N.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,784
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Product details
Overview
SM8S36A-7001HE4/2N from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 6600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for under-hood applications up to 175 °C junction temperature.
For engineers reviewing the SM8S36A-7001HE4/2N datasheet, SM8S36A-7001HE4/2N pinout, SM8S36A-7001HE4/2N application, or SM8S36A-7001HE4/2N equivalent, key selection criteria include clamping voltage (58.1 V at IPPM), low leakage (<10 µA at VWM), DO-218AB package thermal resistance (0.90 °C/W), and compliance with ISO7637-2 surge testing.
Technical Context
This TVS diode operates in avalanche mode during overvoltage events, providing fast response (<1 ns) and robust clamping to protect downstream circuitry. Its unidirectional polarity and heatsink-anode configuration enable direct mounting to PCB copper planes for enhanced thermal dissipation.
The device is optimized for high-reliability automotive environments: it sustains 175 °C junction temperature, passes JESD201 Class 2 whisker testing, and meets MSL Level 1 reflow requirements (245 °C peak). Its 700 A IFSM rating supports high-energy transients like alternator load dump.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 40.0 V / 44.2 V - Breakdown voltage range at 5 mA test current; defines turn-on threshold consistency |
| VC @ IPPM | 58.1 V - Clamping voltage at 114 A peak pulse; determines maximum stress on protected ICs |
| PPPM (10/1000 µs) | 6600 W - Peak surge power handling; enables protection against ISO7637-2 Pulse 5a load dump |
| RθJC | 0.90 °C/W - Junction-to-case thermal resistance; allows accurate thermal design when mounted to heatsink |
| ID @ VWM | <10 µA - Reverse leakage at rated stand-off voltage; minimizes standby power loss in battery systems |
| TJ max | 175 °C - Maximum junction temperature; supports under-hood placement without derating |
Pinout & Package
Package: DO-218AB - Surface-mount, anode-heatsink configuration with matte tin-plated leads; UL 94 V-0 molding compound; footprint optimized for thermal transfer to PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode | Connected to protected line (e.g., 12 V rail); must be routed with low-inductance path to ground reference |
| Lead 2 / Metal Heatsink | Cathode | Electrically and thermally connected to PCB ground plane; primary heat dissipation path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| Junction passivation | Stable avalanche characteristics over lifetime; prevents parameter drift under thermal cycling and humidity |
| MSL Level 1 rating | Compatible with standard SMT reflow profiles up to 245 °C peak without moisture-induced damage |
| ISO7637-2 compliance | Withstands load dump surges (Pulse 5a) up to 6600 W without degradation or failure |
| Low forward voltage drop | VF ≤ 1.8 V at 100 A - Minimizes conduction loss during high-current surge events |
Applications
| Automotive Load Dump Protection | Industrial Power Supply Input Protection |
|---|---|
Use Scenario: Protecting engine control units (ECUs) and body control modules (BCMs) from alternator load dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and system input; conducts only during positive overvoltage events. Use Value: Limits transient voltage to ≤58.1 V, preventing damage to 36 V-rated DC-DC converters and microcontrollers. | Use Scenario: Safeguarding industrial PLC power inputs against switching surges from inductive loads (e.g., solenoids, contactors). IC Role / Device Role / Timing Role: Primary overvoltage suppression element on main 24 V supply line; absorbs energy before reaching upstream regulators. Use Value: Handles 700 A single-half-sine surge (IFSM), enabling robust protection without sacrificial fusing. |
| Automotive Infotainment Power Rail | Commercial Vehicle Battery Management |
Use Scenario: Securing USB-C PD and display power rails in head units exposed to cold-crank and load-dump conditions. IC Role / Device Role / Timing Role: Secondary TVS stage after EMI filter; provides fast clamping (<1 ns) to complement slower MOV-based front-end protection. Use Value: Low leakage (<10 µA) preserves battery life in always-on infotainment standby modes. | Use Scenario: Protecting BMS analog front-ends and CAN transceivers in 24 V commercial truck battery systems. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional SM8S36A-7001HE4/2N placed on positive rail only. Use Value: 175 °C TJ rating ensures stable operation near battery packs where ambient exceeds 105 °C. |
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-E3/57T | Lower PPPM (400 W), SMA package, RθJC = 40 °C/W | Not suitable for load dump; limited to low-energy ESD/surge | Select only for cost-sensitive non-automotive applications with <500 W surge requirements |
| TPSMD36A | Same DO-218AB package, but 5000 W PPPM (10/1000 µs), VC = 58.1 V | Meets AEC-Q101 but lacks ISO7637-2 validation documentation | Consider when ISO7637-2 compliance is not mandated and lower surge margin is acceptable |
Compared with SMAJ36A-E3/57T and TPSMD36A, the SM8S36A-7001HE4/2N delivers 16.5× higher surge power and validated ISO7637-2 performance-critical for automotive load dump immunity-while maintaining identical DO-218AB thermal interface and AEC-Q101 reliability.
Availability
SM8S36A-7001HE4/2N is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and commercial vehicle BMS requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for SM8S36A-7001HE4/2N 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, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SM8S series is engineered specifically for high-energy automotive transients, with emphasis on thermal robustness, surge endurance, and AEC-Q101-compliant manufacturing processes.
FAQ
What is the clamping voltage of the SM8S36A-7001HE4/2N at its rated peak pulse current?
The SM8S36A-7001HE4/2N has a maximum clamping voltage (VC) of 58.1 V at its specified peak pulse current (IPPM) of 114 A under a 10/1000 µs waveform. This value is measured at TC = 25 °C and defines the upper voltage limit imposed on protected circuitry during a surge event. The SM8S36A-7001HE4/2N maintains this clamping performance across its full operating temperature range due to its optimized junction passivation.
Is the SM8S36A-7001HE4/2N suitable for bidirectional transient protection?
No, the SM8S36A-7001HE4/2N is a unidirectional TVS diode and conducts only during positive overvoltage events relative to its anode terminal. It is not rated for reverse-polarity or AC surge protection. For bidirectional applications, a separate device such as the SMBJ36CA or a dual-diode configuration would be required. The SM8S36A-7001HE4/2N datasheet explicitly states "Available in uni-directional polarity only."
Does the SM8S36A-7001HE4/2N meet automotive qualification standards?
Yes, the SM8S36A-7001HE4/2N is AEC-Q101 qualified and rated for operation up to TJ = 175 °C. It also meets MSL Level 1 per J-STD-020, passes JESD201 Class 2 whisker testing, and is validated to withstand ISO7637-2 load dump waveforms. These qualifications are documented in Vishay's official specification document 88387, revision 31-Aug-16.
What is the thermal resistance from junction to case for the SM8S36A-7001HE4/2N?
The SM8S36A-7001HE4/2N has a typical thermal resistance from junction to case (RθJC) of 0.90 °C/W. This low value is enabled by its DO-218AB package with integrated metal heatsink (Lead 2), allowing efficient heat transfer to the PCB ground plane. Proper copper pour design beneath the heatsink pad is essential to realize this thermal performance in actual layouts.
How does the SM8S36A-7001HE4/2N differ from the SM8S36 variant?
The SM8S36A-7001HE4/2N has a tighter breakdown voltage tolerance (40.0–44.2 V) compared to the SM8S36 (40.0–48.9 V), resulting in more consistent clamping behavior. Both share identical package (DO-218AB), power rating (6600 W), and AEC-Q101 qualification. The "A" suffix denotes ±5 % VBR tolerance, confirmed in the Electrical Characteristics table of document 88387.
SM8S36A-7001HE4/2N 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):
- 114A
- Power - Peak Pulse:
- 6600W (6.6kW)
- 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
SM8S36A-7001HE4/2N FAQ
1.How can I place an order for SM8S36A-7001HE4/2N through Aetrix?
Please submit a Request for Quotation (RFQ) for SM8S36A-7001HE4/2N 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 SM8S36A-7001HE4/2N reliable?
The price and inventory of SM8S36A-7001HE4/2N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM8S36A-7001HE4/2N is usually 5 days.
3.What payment methods are accepted for SM8S36A-7001HE4/2N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM8S36A-7001HE4/2N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM8S36A-7001HE4/2N?
SM8S36A-7001HE4/2N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM8S36A-7001HE4/2N 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 SM8S36A-7001HE4/2N?
For technical support, including SM8S36A-7001HE4/2N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM8S36A-7001HE4/2N requirements.
6.How does Aetrix verify that SM8S36A-7001HE4/2N is sourced from the original manufacturer or authorized distributors?
All SM8S36A-7001HE4/2N 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 SM8S36A-7001HE4/2N meets industry standards.
7.What is the process for return or replacement of SM8S36A-7001HE4/2N?
All SM8S36A-7001HE4/2N units undergo pre-shipment inspection (PSI). If there is an issue with SM8S36A-7001HE4/2N, 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 SM8S36A-7001HE4/2N part is unused and in its original packaging.
Return procedure for SM8S36A-7001HE4/2N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM8S36A-7001HE4/2N Tags
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