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Vishay General Semiconductor - Diodes Division SM6S17HE3/2D
- Part No.:
- SM6S17HE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S17HE3/2D.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,290
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Product details
Overview
SM6S17HE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor diode designed for automotive load dump protection in 12 V systems. It features a 17.0 V standoff voltage (VWM), 18.9–23.1 V breakdown range (VBR), 30.5 V clamping voltage at 151 A peak pulse current, 4600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for under-hood reliability.
For engineers reviewing the SM6S17HE3/2D datasheet, SM6S17HE3/2D pinout, SM6S17HE3/2D application, or SM6S17HE3/2D equivalent, key selection criteria include unidirectional polarity, DO-218AB package thermal performance (RθJC = 0.95 °C/W), 175 °C junction rating, low leakage (<10 μA at VWM), and ISO7637-2 compliance for automotive transients.
Technical Context
The SM6S17HE3/2D operates as a unidirectional clamping TVS diode with anode-connected heatsink configuration, optimized for high-energy load dump events in automotive power networks. Its passivated anisotropic rectifier structure enables stable operation up to TJ = 175 °C and low forward voltage drop (≤1.9 V at 100 A).
It delivers 4600 W peak pulse power under 10/1000 μs waveform and maintains ≤30.5 V clamping at 151 A, supporting robust protection of downstream DC-DC converters and microcontrollers. The device meets MSL Level 1 per J-STD-020 and passes JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 18.9 V / 23.1 V - Breakdown occurs within this range at 5 mA test current, defining turn-on threshold |
| VC @ IPPM | 30.5 V - Clamped voltage at 151 A peak pulse ensures downstream ICs stay below absolute max ratings |
| PPPM (10/1000 μs) | 4600 W - Sustains high-energy transients typical of ISO7637-2 Load Dump Pulse 5a |
| TJ max | 175 °C - Enables placement near hot engine control units without derating concerns |
| ID @ VWM | <10 μA - Minimizes standby power loss in always-on vehicle modules |
| RθJC | 0.95 °C/W - Enables effective heat transfer to PCB copper or external heatsink in DO-218AB package |
Pinout & Package
Package: DO-218AB - Surface-mount, anode-heatsink configuration with matte tin-plated leads; meets UL 94 V-0, MSL Level 1, and JESD201 Class 2 whisker requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode | Connected to protected line (e.g., battery rail); must be routed to thermal pad/heatsink area |
| Lead 2 / Metal Heatsink | Cathode | Common reference node; provides primary thermal path to PCB copper plane |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use with temperature cycling, humidity, and mechanical shock compliance |
| 175 °C junction rating | Enables direct mounting on high-temperature engine control boards without thermal derating |
| Low leakage <10 μA | Reduces quiescent current drain in battery-sensitive applications like telematics sleep mode |
| ISO7637-2 compliance | Guarantees survivability against standardized automotive load dump pulses (Pulse 5a) |
| DO-218AB thermal design | 0.95 °C/W junction-to-case resistance supports >4 kW pulse handling with minimal board copper |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Rail Protection |
|---|---|
Use Scenario: Protects ECU 12 V input from alternator load dump surges during ignition-off events in gasoline/diesel vehicles. IC Role / Device Role / Timing Role: Unidirectional clamping TVS diode placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤30.5 V, preventing damage to 36 V-rated buck controllers and ensuring system reset-free operation. | Use Scenario: Shields BCM power supply from switching transients caused by high-current loads (headlights, wipers, HVAC). IC Role / Device Role / Timing Role: Primary overvoltage clamp on fused battery feed, upstream of LDOs and CAN transceivers. Use Value: Withstands 4600 W pulses while maintaining <10 μA leakage, preserving low-power sleep states. |
| ADAS Camera Power Conditioning | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Safeguards image sensor and ISP power rails in rear-view or surround-view cameras exposed to vehicle-level transients. IC Role / Device Role / Timing Role: Secondary protection stage after front-end fuse, clamping fast-rising spikes before they reach analog front-end ICs. Use Value: 10/1000 μs response ensures clamping within nanoseconds, preventing pixel corruption or frame loss during transient events. | Use Scenario: Protects gate drivers and MCU power supplies in EPS systems subject to motor regeneration spikes and battery reversal. IC Role / Device Role / Timing Role: Bidirectional-capable layout not required-unidirectional SM6S17HE3/2D used with polarity-aware placement on +12 V rail. Use Value: 175 °C rating allows integration into compact EPS control units mounted near steering column heat sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/5AT | DO-214AC package; lower PPPM = 400 W; VC = 27.7 V at 14.4 A; RθJC ≈ 35 °C/W | Not suitable for load dump; limited to ESD and low-energy transients in infotainment or sensor interfaces | Select only for space-constrained non-automotive applications where 4.6 kW surge capability is unnecessary |
| 1.5KE18A | Through-hole DO-201 package; PPPM = 1500 W; VC = 27.7 V at 54.3 A; no AEC-Q101 or MSL Level 1 rating | Requires wave soldering; unsuitable for automated SMT lines or high-reliability automotive programs | Consider only for legacy industrial designs with existing through-hole infrastructure and relaxed qualification requirements |
Compared with SMAJ17A-E3/5AT and 1.5KE18A, the SM6S17HE3/2D uniquely combines AEC-Q101 qualification, DO-218AB thermal performance, and 4600 W load dump capability-making it the only option qualified for modern automotive power rail protection without derating or secondary clamping stages.
Availability
SM6S17HE3/2D is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera systems, and electric power steering applications requiring stable component supply across long production lifecycles.
Supply support for SM6S17HE3/2D 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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SM6Sxx series belongs to Vishay's PAR® (Planar Anisotropic Rectifier) TVS platform, engineered specifically for high-energy automotive load dump protection with extended temperature operation and industry-standard packaging.
FAQ
What is the clamping voltage of the SM6S17HE3/2D at its rated peak pulse current?
The SM6S17HE3/2D has a maximum clamping voltage (VC) of 30.5 V when subjected to its peak pulse current (IPPM) of 151 A under a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88384) and ensures protected circuits remain within safe operating limits during load dump events. The SM6S17HE3/2D achieves this clamping performance while maintaining unidirectional polarity and AEC-Q101 qualification.
Is the SM6S17HE3/2D suitable for bidirectional transient suppression?
No, the SM6S17HE3/2D is a unidirectional TVS diode and is not rated for reverse-polarity or bidirectional surge suppression. Its electrical characteristics-including breakdown voltage, clamping behavior, and polarity marking-are specified only for forward-biased (anode-to-cathode) conduction. For bidirectional protection, a separate symmetric device such as the SMBJ17CA would be required. The SM6S17HE3/2D must be installed with correct orientation relative to the protected line, as indicated by its anode-heatsink construction.
Does the SM6S17HE3/2D meet automotive qualification standards?
Yes, the SM6S17HE3/2D is AEC-Q101 qualified and rated for operation from -55 °C to +175 °C junction temperature. It also meets MSL Level 1 per J-STD-020, passes JESD201 Class 2 whisker testing, and complies with ISO7637-2 for load dump immunity. These qualifications are explicitly stated in the Vishay datasheet (Revision: 22-Jul-16, Document Number: 88384) and confirm its suitability for automotive powertrain and chassis applications. The SM6S17HE3/2D carries the HE3 suffix denoting RoHS-compliance and AEC-Q101 qualification.
What is the thermal resistance from junction to case for the SM6S17HE3/2D?
The SM6S17HE3/2D has a typical thermal resistance from junction to case (RθJC) of 0.95 °C/W, as specified in the Vishay datasheet. This low value is enabled by the DO-218AB package's metal heatsink terminal (Lead 2), which provides a direct thermal path to the PCB copper pour or external heatsink. Effective thermal management using this path is essential to sustain repeated 4600 W transients. The SM6S17HE3/2D's RθJC is over 35× lower than standard SMA packages, enabling higher power handling in compact layouts.
How does the SM6S17HE3/2D differ from the SM6S17A variant?
The SM6S17HE3/2D is the standard tolerance version (±10 % VBR range: 18.9–23.1 V), while the SM6S17AHE3/2D has tighter ±5 % tolerance (18.9–20.9 V). Both share identical package (DO-218AB), power rating (4600 W), clamping voltage (30.5 V), and AEC-Q101 qualification. The "A" suffix denotes tighter VBR distribution for designs requiring precise turn-on voltage control. The SM6S17HE3/2D remains optimal for general-purpose automotive load dump protection where cost and availability prioritize over narrow VBR spread.
SM6S17HE3/2D 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 151A
- 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
SM6S17HE3/2D FAQ
1.How can I place an order for SM6S17HE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S17HE3/2D 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 SM6S17HE3/2D reliable?
The price and inventory of SM6S17HE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S17HE3/2D is usually 5 days.
3.What payment methods are accepted for SM6S17HE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S17HE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S17HE3/2D?
SM6S17HE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S17HE3/2D 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 SM6S17HE3/2D?
For technical support, including SM6S17HE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S17HE3/2D requirements.
6.How does Aetrix verify that SM6S17HE3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S17HE3/2D 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 SM6S17HE3/2D meets industry standards.
7.What is the process for return or replacement of SM6S17HE3/2D?
All SM6S17HE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S17HE3/2D, 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 SM6S17HE3/2D part is unused and in its original packaging.
Return procedure for SM6S17HE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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