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Vishay General Semiconductor - Diodes Division SM5S17A-E3/2D
- Part No.:
- SM5S17A-E3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S17A-E3/2D.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,835
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Product details
Overview
SM5S17A-E3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor diode in DO-218AB package, rated for 17.0 V standoff voltage (VWM), 27.6 V clamping voltage at 130 A peak pulse current, and 3600 W peak pulse power (10/1000 µs). It operates up to 175 °C junction temperature and is AEC-Q101 qualified for automotive load dump protection.
For engineers reviewing the SM5S17A-E3/2D datasheet, SM5S17A-E3/2D pinout, SM5S17A-E3/2D application, or SM5S17A-E3/2D equivalent, key selection criteria include clamping performance under ISO 7637-2 load dump transients, thermal resistance (RθJC = 1.0 °C/W), unidirectional polarity with heatsink-as-anode configuration, and MSL Level 1 moisture sensitivity rating.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low leakage (<10 µA at VWM, 25 °C). Its 175 °C maximum junction temperature and AEC-Q101 qualification support operation in under-hood automotive environments where thermal cycling and surge immunity are critical.
The device delivers 3600 W peak pulse power handling with 10/1000 µs waveform and maintains clamping voltage ≤27.6 V at 130 A, enabling robust protection of 12 V automotive electronics against load dump and inductive switching transients per ISO 7637-2 test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VC @ IPPM | 27.6 V - Clamping voltage at 130 A peak pulse current ensures downstream ICs see limited overvoltage |
| PPPM (10/1000 µs) | 3600 W - Sustains high-energy transients without failure during automotive load dump events |
| RθJC | 1.0 °C/W - Enables efficient heat transfer to PCB copper or external heatsink for thermal reliability |
| TJ max. | 175 °C - Supports extended operation in high-ambient under-hood locations |
| ID @ VWM | ≤10 µA at 25 °C - Minimizes standby power loss and avoids false triggering in low-power circuits |
| MSL Level | Level 1 per J-STD-020 - Allows standard reflow without baking or special handling |
Pinout & Package
Package: DO-218AB - Surface-mount molded case with metal heatsink tab (anode), UL 94 V-0 rated compound, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode | Connected to protected line; must be routed to low-inductance ground path via heatsink tab |
| Lead 2 / Metal Heatsink Tab | Anode (common terminal) | Primary thermal and electrical path to PCB copper pour or heatsink; polarity-critical mounting surface |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process reduces leakage drift over temperature and lifetime |
| AEC-Q101 qualification | Validated reliability for automotive powertrain and body electronics per stress test requirements |
| ISO 7637-2 compliance | Meets load dump surge immunity for 12 V systems under specified test waveforms and coupling networks |
| Low forward voltage drop | ≤2.0 V at 100 A enables fast turn-on and minimal conduction loss during clamping |
| MSL Level 1 rating | Supports standard SMT reflow profile (peak 245 °C) without preconditioning or dry pack |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Protecting 12 V power inputs of vehicle infotainment modules during alternator load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamps transient spikes above 17 V to ≤27.6 V within nanoseconds. Use Value: Prevents damage to DC-DC converters and microcontrollers by limiting overvoltage to safe levels defined in ISO 7637-2 Pulse 5a. | Use Scenario: Safeguarding sensor supply lines in engine control units exposed to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Fast-response transient suppressor shunts energy away from analog front-end and MCU I/O pins. Use Value: Maintains signal integrity and prevents latch-up by clamping 10/1000 µs surges up to 3600 W without degradation. |
| Body Control Module (BCM) Power Rail | ADAS Camera Power Input |
Use Scenario: Securing 12 V input rails of door module controllers subject to repeated switching transients. IC Role / Device Role / Timing Role: High-reliability TVS with 175 °C TJ rating sustains operation in hot chassis locations. Use Value: Ensures long-term functionality without derating in confined enclosures where ambient exceeds 105 °C. | Use Scenario: Protecting power input of rear-view camera modules mounted near exhaust components. IC Role / Device Role / Timing Role: DO-218AB package provides low thermal resistance (1.0 °C/W) to dissipate surge energy into PCB copper. Use Value: Eliminates need for external heatsinks while maintaining clamping performance across -55 °C to +175 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A | DO-214AC package; lower PPPM = 400 W; RθJC ≈ 50 °C/W; not AEC-Q101 qualified | General industrial use only; unsuitable for automotive under-hood deployment | Select SMAJ17A only for cost-sensitive non-automotive designs with lower surge energy requirements |
| TPSMD17A | DO-218AB package; same VWM and VC; PPPM = 3000 W; AEC-Q101 qualified; RθJC = 1.2 °C/W | Compatible for load dump but with 17 % lower peak power handling than SM5S17A-E3/2D | Choose TPSMD17A when footprint compatibility is required but system-level surge margin allows 3000 W rating |
Compared with SMAJ17A and TPSMD17A, SM5S17A-E3/2D delivers superior thermal performance (RθJC = 1.0 °C/W), highest surge power (3600 W), and full AEC-Q101 validation-making it the preferred choice for demanding automotive power rail protection where reliability and margin are critical.
Availability
SM5S17A-E3/2D is available at Aetrix Electronics and suitable for automotive load dump protection, ECU input safeguarding, and ADAS camera power conditioning requiring stable component supply and long-term lifecycle assurance.
Supply support for SM5S17A-E3/2D 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 high-temperature performance.
The SM5S series is designed specifically for high-energy transient suppression in automotive 12 V systems, targeting load dump, inductive switching, and ISO 7637-2 compliance with extended thermal capability up to 175 °C junction temperature.
FAQ
What is the clamping voltage of SM5S17A-E3/2D at its rated peak pulse current?
The SM5S17A-E3/2D has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current of 130 A using a 10/1000 µs waveform. This value is measured at TA = 25 °C and ensures downstream circuitry remains within safe overvoltage limits during transient events such as automotive load dump. The SM5S17A-E3/2D maintains this clamping performance across its full operating temperature range.
Is SM5S17A-E3/2D suitable for automotive under-hood applications?
Yes, SM5S17A-E3/2D is explicitly qualified to AEC-Q101 and rated for operation up to 175 °C junction temperature, making it suitable for under-hood automotive applications including engine control units and body control modules. Its DO-218AB package provides low thermal resistance (1.0 °C/W), and it meets ISO 7637-2 load dump requirements. The SM5S17A-E3/2D is designed for these harsh environments and validated accordingly.
What does the "-E3/2D" suffix indicate in SM5S17A-E3/2D?
The "-E3" suffix denotes RoHS-compliant, matte tin-plated leads meeting J-STD-002 solderability and JESD 22-B102 whisker resistance (Class 2). The "/2D" indicates packaging in 13-inch plastic tape and reel with 750 units per reel, anode oriented toward sprocket holes. This full designation confirms SM5S17A-E3/2D meets automotive-grade material and assembly requirements, and the SM5S17A-E3/2D ordering code reflects both compliance and logistics specifications.
How does SM5S17A-E3/2D differ from SM5S17 (non-A) variant?
The SM5S17A-E3/2D features tighter breakdown voltage tolerance (18.9–20.9 V vs. 18.9–23.1 V for SM5S17) and lower clamping voltage (27.6 V vs. 30.5 V at same IPPM), resulting in improved surge margin for sensitive downstream circuitry. Both share DO-218AB package and AEC-Q101 qualification, but SM5S17A-E3/2D offers enhanced consistency and lower VC, making it preferable for high-reliability automotive designs. The SM5S17A-E3/2D is the recommended version where precise clamping is critical.
Can SM5S17A-E3/2D be used in bidirectional configurations?
No, SM5S17A-E3/2D is unidirectional only, with the metal heatsink tab serving as the anode terminal. It is not rated for reverse-biased operation beyond its specified VWM of 17.0 V. For bidirectional transient suppression, a separate back-to-back configuration or a dedicated bidirectional TVS (e.g., SMBJ17CA) would be required. The SM5S17A-E3/2D datasheet explicitly states "Available in uni-directional polarity only", confirming this limitation.
SM5S17A-E3/2D 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:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 130A
- Power - Peak Pulse:
- 3600W (3.6kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM5S17A-E3/2D FAQ
1.How can I place an order for SM5S17A-E3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S17A-E3/2D 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 SM5S17A-E3/2D reliable?
The price and inventory of SM5S17A-E3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S17A-E3/2D is usually 5 days.
3.What payment methods are accepted for SM5S17A-E3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S17A-E3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S17A-E3/2D?
SM5S17A-E3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S17A-E3/2D 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 SM5S17A-E3/2D?
For technical support, including SM5S17A-E3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S17A-E3/2D requirements.
6.How does Aetrix verify that SM5S17A-E3/2D is sourced from the original manufacturer or authorized distributors?
All SM5S17A-E3/2D 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 SM5S17A-E3/2D meets industry standards.
7.What is the process for return or replacement of SM5S17A-E3/2D?
All SM5S17A-E3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM5S17A-E3/2D, 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 SM5S17A-E3/2D part is unused and in its original packaging.
Return procedure for SM5S17A-E3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S17A-E3/2D Tags
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