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Vishay General Semiconductor - Diodes Division SM5S10AHE3/2D
- Part No.:
- SM5S10AHE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S10AHE3/2D.pdf
- Description:
- TVS DIODE 10VWM 17VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,839
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Product details
Overview
SM5S10AHE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection in 12 V systems. It features a 10 V stand-off voltage (VWM), 11.1–12.3 V breakdown range (VBR), 3600 W peak pulse power (10/1000 µs), 175 °C junction rating, and DO-218AB package with anode-heatsink polarity.
For engineers reviewing the SM5S10AHE3/2D datasheet, SM5S10AHE3/2D pinout, SM5S10AHE3/2D application, or SM5S10AHE3/2D equivalent, key selection criteria include unidirectional clamping performance under ISO 7637-2 load dump transients, AEC-Q101 qualification, thermal resistance (RθJC = 1.0 °C/W), and compatibility with high-reliability automotive power rail protection layouts.
Technical Context
The SM5S10AHE3/2D operates as a unidirectional avalanche diode, leveraging passivated anisotropic rectifier technology to deliver stable clamping during high-energy transients. Its 175 °C maximum junction temperature and MSL Level 1 rating support under-hood automotive deployment without derating penalties at elevated ambient temperatures.
It meets ISO 7637-2 surge requirements for 12 V vehicle electrical systems and is characterized for 10/1000 µs and 10/10,000 µs waveforms - delivering 3600 W and 2800 W peak pulse power respectively. The heatsink-integrated anode terminal enables direct thermal coupling to PCB copper or external heatsinks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below system nominal 12 V rail. |
| VBR (min/max) | 11.1 V / 12.3 V - Breakdown voltage range at 5 mA test current; ensures reliable turn-on during load dump surges above 12.3 V. |
| VC @ IPPM | 17.0 V - Clamping voltage at 212 A peak pulse current (10/1000 µs); limits downstream IC stress during worst-case transients. |
| PPPM (10/1000 µs) | 3600 W - Peak pulse power handling capacity; supports robust protection against ISO 7637-2 Pulse 5a load dump events. |
| TJ max. | 175 °C - Maximum junction temperature; enables operation in engine compartment environments without thermal shutdown. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; allows precise thermal design when mounted on copper pour or heatsinked PCB layers. |
| Polarity | Unidirectional - Anode connected to system ground (heatsink terminal), cathode to protected line; blocks forward conduction except during clamping. |
Pinout & Package
Package: DO-218AB - Surface-mount, thermally enhanced case with integrated metal heatsink terminal (anode). Dimensions: 15.4 mm × 9.5 mm × 3.0 mm (L × W × H); RoHS-compliant matte tin-plated leads; JESD201 Class 2 whisker resistant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (cathode) | Protected line connection | Connected to 12 V supply rail or ECU input; carries transient current into device during clamping. |
| Lead 2 / Metal Heatsink (anode) | Ground reference & thermal path | Must be soldered to large copper area or external heatsink; serves as both circuit return and primary thermal dissipation path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC standard. |
| Junction passivation | Stable leakage performance (<15 µA at VWM, <250 µA at TJ = 175 °C) across full automotive temperature range. |
| Low forward voltage drop | VF ≤ 2.0 V at 100 A surge - minimizes conduction loss and self-heating during high-current clamping events. |
| MSL Level 1 rating | Reflow-compatible up to 245 °C peak without moisture-induced failure; eliminates pre-bake requirement for SMT assembly. |
| ISO 7637-2 compliance | Validated for Pulse 5a (load dump) with 10 ms exponential waveform - directly addresses OEM-level automotive EMC requirements. |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Line Protection |
|---|---|
Use Scenario: Protecting microcontroller power rails in gasoline/diesel ECUs exposed to alternator load dump transients during battery disconnect. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and LDO/regulator input to limit voltage excursions to <17.0 V. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V logic supplies by clamping 12 V rail surges up to 3600 W without degradation over 1000+ cycles. | Use Scenario: Safeguarding BCM power inputs during jump-start events and generator regulation faults in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on main 12 V distribution node feeding multiple sub-systems. Use Value: Maintains functional safety integrity by limiting transient duration and amplitude to levels compatible with ASIL-B component requirements. |
| Automotive Infotainment Head Unit Power Supply | ADAS Camera Module Power Rail Protection |
Use Scenario: Shielding display processor and audio codec power inputs from ignition-switching noise and alternator ripple spikes. IC Role / Device Role / Timing Role: Secondary clamping stage after upstream fuse and common-mode choke, positioned immediately before DC/DC converter input. Use Value: Reduces EMI-induced reset events by suppressing fast-rising transients (>1 kV/µs) while maintaining low leakage (<15 µA) to avoid standby current violations. | Use Scenario: Protecting image sensor and SerDes interface power in rear-view or surround-view cameras mounted near engine bay or chassis grounds. IC Role / Device Role / Timing Role: Front-line transient suppressor on 12 V camera power input, thermally coupled to metal shield or PCB ground plane. Use Value: Ensures uninterrupted video streaming during cold-cranking and load dump by sustaining 175 °C junction operation without parameter drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A | Lower PPPM (400 W), SMA package (RθJC ≈ 45 °C/W), 11.1–12.3 V VBR same range | Not rated for ISO 7637-2 load dump; limited to lower-energy transients (IEC 61000-4-5) | Select SMAJ10A only for non-automotive industrial or consumer applications with <500 W surge exposure. |
| TPSMD10A | Same DO-218AB package, 3600 W PPPM, but higher VBR (11.7–13.0 V) and VC (17.5 V) | Also AEC-Q101 qualified and ISO 7637-2 compliant; slightly higher clamping voltage increases downstream stress margin | Choose TPSMD10A when tighter VBR tolerance (±5 % vs ±10 %) or extended lifetime validation under cyclic load dump is required. |
Compared with SMAJ10A and TPSMD10A, the SM5S10AHE3/2D offers optimal balance of low clamping voltage (17.0 V), proven load dump capability, and thermal efficiency (RθJC = 1.0 °C/W) - making it preferred for space-constrained, high-reliability 12 V automotive power nodes where thermal management and transient fidelity are critical.
Availability
SM5S10AHE3/2D is available at Aetrix Electronics and suitable for automotive ECU protection, body control module (BCM) power conditioning, and ADAS camera power rail stabilization requiring stable component supply across long production lifecycles.
Supply support for SM5S10AHE3/2D 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SM5SxxA series is part of Vishay's PAR® TVS platform, engineered specifically for automotive-grade transient suppression in 12 V and 24 V systems - emphasizing AEC-Q101 qualification, high-temperature stability, and ISO 7637-2 compliance.
FAQ
What is the clamping voltage of the SM5S10AHE3/2D at its rated peak pulse current?
The SM5S10AHE3/2D has a maximum clamping voltage (VC) of 17.0 V at its specified peak pulse current (IPPM) of 212 A under the 10/1000 µs waveform. This value is measured per the conditions defined in the Vishay datasheet Document Number 88382, ensuring predictable voltage limiting during automotive load dump events. The SM5S10AHE3/2D maintains this clamping performance across its full operating temperature range.
Is the SM5S10AHE3/2D suitable for 24 V automotive systems?
No - the SM5S10AHE3/2D is optimized for 12 V nominal systems, with a 10 V stand-off voltage (VWM) and 11.1–12.3 V breakdown range. For 24 V systems, Vishay specifies higher-voltage variants such as SM5S24AHE3/2D (VWM = 24 V) or SM5S28AHE3/2D (VWM = 28 V). Using SM5S10AHE3/2D in a 24 V application would result in continuous conduction and catastrophic failure.
Does the SM5S10AHE3/2D require a heatsink for standard automotive operation?
The SM5S10AHE3/2D integrates a metal heatsink terminal (anode) designed to be soldered directly to a large PCB copper area - functioning as its primary thermal path. While no external heatsink is mandatory for single-event load dump protection, thermal design must ensure RθJA remains within limits for repetitive surge conditions. The device's RθJC = 1.0 °C/W enables effective heat transfer when mounted per Vishay's recommended pad layout.
What does the "HE3/2D" suffix indicate in SM5S10AHE3/2D?
The "HE3" suffix denotes RoHS-compliant construction and AEC-Q101 qualification; "2D" is the Vishay package code specifying 13-inch plastic tape-and-reel delivery with 750 units per reel and anode orientation toward the sprocket hole. This packaging format ensures automated placement compatibility and traceable, controlled handling for high-volume automotive manufacturing.
How does the SM5S10AHE3/2D compare to bidirectional TVS diodes in automotive applications?
The SM5S10AHE3/2D is unidirectional and intended for DC power line protection where polarity is fixed (e.g., 12 V battery feed), offering lower leakage (<15 µA) and sharper clamping than bidirectional equivalents. Bidirectional TVS devices are used for AC or signal lines subject to polarity reversal; using one on a DC rail would double leakage and degrade clamping precision. The SM5S10AHE3/2D's anode-heatsink configuration further optimizes thermal performance in unidirectional layouts.
SM5S10AHE3/2D 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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 212A
- 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
SM5S10AHE3/2D FAQ
1.How can I place an order for SM5S10AHE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S10AHE3/2D 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 SM5S10AHE3/2D reliable?
The price and inventory of SM5S10AHE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S10AHE3/2D is usually 5 days.
3.What payment methods are accepted for SM5S10AHE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S10AHE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S10AHE3/2D?
SM5S10AHE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S10AHE3/2D 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 SM5S10AHE3/2D?
For technical support, including SM5S10AHE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S10AHE3/2D requirements.
6.How does Aetrix verify that SM5S10AHE3/2D is sourced from the original manufacturer or authorized distributors?
All SM5S10AHE3/2D 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 SM5S10AHE3/2D meets industry standards.
7.What is the process for return or replacement of SM5S10AHE3/2D?
All SM5S10AHE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM5S10AHE3/2D, 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 SM5S10AHE3/2D part is unused and in its original packaging.
Return procedure for SM5S10AHE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S10AHE3/2D Tags
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