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Vishay General Semiconductor - Diodes Division SM8S10AHE3_A/I
- Part No.:
- SM8S10AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM8S10AHE3_A/I.pdf
- Description:
- TVS DIODE 10VWM 17VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,954
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Product details
Overview
SM8S10AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection. It features a 10 V stand-off voltage (VWM), 11.1–12.3 V breakdown voltage (VBR) at 5 mA, 6600 W peak pulse power (10/1000 μs), 175 °C junction temperature rating, and AEC-Q101 qualification - deployed in 12 V automotive power rail protection.
For engineers reviewing the SM8S10AHE3_A/I datasheet, SM8S10AHE3_A/I pinout, SM8S10AHE3_A/I application, or SM8S10AHE3_A/I equivalent, key selection criteria include unidirectional clamping behavior, DO-218AB thermal performance (RθJM = 0.35 °C/W), ISO7637-2 compliance, low leakage (<15 μA at VWM), and compatibility with high-reliability automotive PCB layouts requiring MSL Level 1 and JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge stress up to TJ = 175 °C. Its DO-218AB package integrates a metal heatsink as the anode terminal, enabling direct thermal coupling to PCB copper and achieving RθJM = 0.35 °C/W - critical for sustained load dump energy absorption without thermal runaway.
The device operates exclusively in unidirectional mode with polarity defined by heatsink = anode. It meets ISO7637-2 test conditions for automotive transients and exhibits <1.8 V forward voltage at 100 A (300 μs pulse), supporting fast response to inductive switching spikes while maintaining low conduction loss during fault events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins; sets threshold for 12 V automotive system protection. |
| VBR (min/typ/max) | 11.1 / 11.7 / 12.3 V at 5 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM with ±5% tolerance. |
| PPPM (10/1000 μs) | 6600 W - Peak surge power handling capability for standardized load dump pulses per ISO7637-2. |
| VC at IPPM | 17.0 V - Clamping voltage at rated peak current; limits downstream voltage stress to safe levels during transients. |
| TJ max | +175 °C - Enables operation in under-hood environments and supports long-term reliability under thermal cycling. |
| ID at VWM | ≤15 μA at 25 °C - Low leakage preserves battery life and avoids false triggering in always-on vehicle modules. |
| IFSM | 700 A - Surge current rating for 8.3 ms half-sine waveform; withstands high-energy inductive kickback events. |
Pinout & Package
Package: DO-218AB - Surface-mount, anode-heatsink configuration with matte tin-plated terminals, RoHS-compliant, MSL Level 1, JESD201 Class 2 whisker resistant. Heatsink serves as anode terminal and primary thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Positive DC rail connection and thermal interface | Directly bonded metal tab provides lowest possible RθJM (0.35 °C/W); must be soldered to large copper pour for effective heat dissipation. |
| Cathode (Lead 1) | Transient return path to ground or low-side reference | Carries full surge current during clamping; layout requires short, low-inductance trace to minimize voltage overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, body electronics, and ADAS modules. |
| Junction passivation | Optimized anisotropic rectifier process reduces parameter drift over lifetime and improves stability at TJ = 175 °C. |
| ISO7637-2 compliance | Meets Pulse 5a/b load dump requirements for 12 V systems - enables single-device protection without external series impedance. |
| Low VF at high IF | ≤1.8 V at 100 A (300 μs pulse) - minimizes conduction loss and self-heating during sustained overvoltage events. |
| MSL Level 1 | Rated for reflow up to 245 °C peak - compatible with standard lead-free SMT assembly without moisture sensitivity concerns. |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protecting 12 V power inputs of automotive modules against alternator load dump transients (ISO7637-2 Pulse 5). IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed directly across input rails to limit voltage excursion to ≤17.0 V during 6600 W surges. Use Value: Eliminates need for upstream fusing or series resistors while maintaining AEC-Q101 reliability and 175 °C operation in under-hood locations. |
Use Scenario: Safeguarding microcontroller and sensor power supplies in engine management systems exposed to ignition coil switching noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor on main 5 V or 3.3 V regulator input, triggered within nanoseconds of voltage spike onset. Use Value: Prevents latch-up or reset events in safety-critical ECUs by clamping sub-20 V spikes with <15 μA leakage at nominal 12 V supply. |
| Body Control Module (BCM) Power Rail | ADAS Camera Power Interface |
Use Scenario: Securing LIN bus and power inputs in door modules, seat controllers, and lighting systems subject to battery disconnect transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V input stage, coordinated with upstream fuse and downstream LDO regulators. Use Value: Provides robust protection with DO-218AB thermal performance (RθJM = 0.35 °C/W), enabling compact placement near connectors without derating. |
Use Scenario: Protecting image sensor and SerDes power lines in rear-view or surround-view cameras mounted near vehicle exterior. IC Role / Device Role / Timing Role: Front-end TVS on camera module's 12 V input, absorbing ESD and load dump energy before it reaches sensitive analog front-ends. Use Value: Ensures uninterrupted video stream during cold-cranking and jump-start events due to 700 A IFSM and 175 °C operational margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM8S10AHM3 | Same electrical specs and DO-218AB package; HM3 suffix indicates halogen-free molding compound and alternate revision code (vs. HE3_A/I). | No functional difference; HM3 is Vishay's newer material variant replacing HE3 for new designs. | Select SM8S10AHM3 for new designs where halogen-free compliance is mandatory and legacy HE3 sourcing is restricted. |
| SMAJ10A | Lower PPPM (400 W vs. 6600 W), SMA package (RθJA ≈ 90 °C/W), no AEC-Q101 qualification, VBR 11.1–12.2 V. | Not suitable for automotive load dump; limited to low-energy board-level ESD or inductive spikes in industrial/commercial gear. | Choose SMAJ10A only for cost-sensitive non-automotive applications where 6600 W surge immunity and 175 °C operation are unnecessary. |
Compared with SM8S10AHM3, the SM8S10AHE3_A/I offers identical surge performance but differs in material compliance (E3 = non-halogen-free) and revision coding; versus SMAJ10A, it delivers 16.5× higher peak power, 2.6× better thermal resistance, and automotive qualification - making it irreplaceable for under-hood load dump protection.
Availability
SM8S10AHE3_A/I is available at Aetrix Electronics and suitable for automotive load dump protection, engine control unit (ECU) power input hardening, and body control module (BCM) power rail stabilization requiring stable component supply across extended temperature and surge stress conditions.
Supply support for SM8S10AHE3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SM8SxxA family was engineered specifically for AEC-Q101-compliant automotive transient suppression, emphasizing thermal robustness (TJ = 175 °C), ISO7637-2 Pulse 5 compliance, and DO-218AB package integration into high-density power rail layouts.
FAQ
What is the clamping voltage of SM8S10AHE3_A/I at its rated peak pulse current?
The SM8S10AHE3_A/I has a maximum clamping voltage (VC) of 17.0 V when subjected to its rated peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number 88387, page 2) and ensures downstream circuitry remains below critical overvoltage thresholds during load dump events. The SM8S10AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is SM8S10AHE3_A/I suitable for new automotive designs?
No - the Vishay datasheet explicitly states "Not For New Designs" for the SM8S10AHE3_A/I, recommending SM8S10AHM3 as the alternative device. While SM8S10AHE3_A/I remains fully functional and AEC-Q101 qualified, Vishay has transitioned to the HM3 suffix for updated material composition and revision control. New designs should use SM8S10AHM3 to ensure long-term supply continuity and compliance alignment.
What does the 'HE3_A/I' suffix mean in SM8S10AHE3_A/I?
In SM8S10AHE3_A/I, 'HE3' denotes RoHS-compliant, Pb-free termination with non-halogen-free molding compound and JESD201 Class 2 whisker resistance; 'A' indicates ±5% VBR tolerance and unidirectional polarity; 'I' specifies the preferred packaging code - 13" diameter plastic tape and reel with anode oriented toward sprocket holes. This full suffix maps precisely to Vishay's ordering information table (page 3 of doc 88387).
How does the DO-218AB package of SM8S10AHE3_A/I improve thermal performance?
The DO-218AB package of SM8S10AHE3_A/I uses the metal heatsink as the anode terminal, establishing a direct low-resistance thermal path from the silicon junction to the PCB copper. With a measured RθJM of 0.35 °C/W (per JEDEC 51-14 TDIM method), it dissipates surge energy far more effectively than standard SMC or SMA packages. This allows the SM8S10AHE3_A/I to sustain repeated 6600 W transients without thermal runaway in constrained automotive layouts.
Does SM8S10AHE3_A/I meet ISO7637-2 requirements?
Yes - the SM8S10AHE3_A/I is specified to meet ISO7637-2 surge requirements, particularly Pulse 5a and 5b (load dump), as confirmed in the Vishay datasheet (page 1, FEATURES section). Its 6600 W peak pulse power rating, 17.0 V clamping voltage, and 175 °C junction rating collectively satisfy the energy absorption and thermal stability demands of this automotive standard under defined test conditions.
SM8S10AHE3_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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 388A
- 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
SM8S10AHE3_A/I FAQ
1.How can I place an order for SM8S10AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM8S10AHE3_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 SM8S10AHE3_A/I reliable?
The price and inventory of SM8S10AHE3_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 SM8S10AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM8S10AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM8S10AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM8S10AHE3_A/I?
SM8S10AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM8S10AHE3_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 SM8S10AHE3_A/I?
For technical support, including SM8S10AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM8S10AHE3_A/I requirements.
6.How does Aetrix verify that SM8S10AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM8S10AHE3_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 SM8S10AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM8S10AHE3_A/I?
All SM8S10AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM8S10AHE3_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 SM8S10AHE3_A/I part is unused and in its original packaging.
Return procedure for SM8S10AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM8S10AHE3_A/I Tags
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