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Vishay General Semiconductor - Diodes Division SM6S16A-E3/2D
- Part No.:
- SM6S16A-E3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S16A-E3/2D.pdf
- Description:
- TVS DIODE 16VWM 26VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,521
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Product details
Overview
SM6S16A-E3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for automotive load dump protection. It features a 16.0 V stand-off voltage (VWM), 17.8–19.7 V breakdown range (VBR), 26.0 V clamping voltage at 177 A peak pulse current, 4600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the SM6S16A-E3/2D datasheet, SM6S16A-E3/2D pinout, SM6S16A-E3/2D application, or SM6S16A-E3/2D 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
This TVS diode operates as a clamping device in parallel with sensitive DC power rails, conducting only when reverse voltage exceeds VBR to limit transient overvoltage. Its anisotropic rectifier structure enables low forward voltage drop (≤1.9 V at 100 A) and high surge robustness without degradation under repeated 8.3 ms half-sine surges up to 600 A.
The DO-218AB package integrates a metal heatsink as the anode terminal, enabling direct thermal coupling to PCB copper or external heatsinks. With TJ max = 175 °C and MSL Level 1 rating (245 °C reflow), it supports high-reliability automotive power supply designs where thermal stability and solderability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 17.8 V / 19.7 V - Breakdown threshold range at 5 mA test current; defines turn-on consistency |
| VC @ IPPM | 26.0 V - Clamped voltage at 177 A peak pulse current; determines protected circuit stress level |
| PPPM (10/1000 μs) | 4600 W - Peak transient energy absorption capability; validates load dump survivability |
| IFSM | 600 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports ignition coil switching |
| TJ max | 175 °C - Maximum junction temperature; enables placement near hot engine control units |
| RθJC | 0.95 °C/W - Junction-to-case thermal resistance; confirms efficient heat transfer to heatsink |
Pinout & Package
Package: DO-218AB - Surface-mount, anode-heatsink configuration with matte tin-plated leads; meets UL 94 V-0, J-STD-002 solderability, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected line (e.g., battery rail); carries full transient current during clamping |
| Lead 2 / Metal Heatsink | Anode | Primary thermal path and electrical return; must be soldered to large copper pour or external heatsink |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use per stress test requirements including temperature cycling, HTRB, and ESD |
| ISO7637-2 compliant | Withstands load dump pulses (Pulse 5a/b) up to 175 °C case temperature without parameter shift |
| Uni-directional polarity | Protects against negative transients only; avoids forward conduction during normal operation |
| Low leakage current | <10 μA at 16.0 V and 25 °C; minimizes standby power loss in always-on vehicle modules |
| High surge capability | Rated for 600 A single half-sine surge (8.3 ms); handles alternator field decay and inductive kickback |
Applications
| Engine Control Unit (ECU) Power Protection | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protecting 5 V/12 V microcontroller power supplies from alternator load dump spikes during battery disconnect events. IC Role / Device Role / Timing Role: Parallel-connected clamping TVS that activates within nanoseconds to clamp voltage to ≤26.0 V. Use Value: Prevents latch-up or permanent damage to MCU, CAN transceivers, and analog sensors exposed to 120 V/400 ms transients. | Use Scenario: Safeguarding BCM power inputs during door lock actuator switching and HVAC blower motor commutation. IC Role / Device Role / Timing Role: Fast-response overvoltage limiter placed directly at BCM input connector. Use Value: Limits transient overshoot to safe levels while maintaining <10 μA leakage to preserve sleep-mode current budget. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Shielding 12 V camera module inputs from ignition noise and starter motor cranking transients. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on camera power entry point. Use Value: Ensures uninterrupted image capture by clamping sub-100 ns spikes to ≤26.0 V without affecting steady-state regulation. | Use Scenario: Protecting H-bridge gate drivers and current sense amplifiers from inductive flyback during EPS motor direction reversal. IC Role / Device Role / Timing Role: High-energy TVS across motor supply rail to absorb 600 A inductive surges. Use Value: Enables reliable torque delivery by preventing driver IC failure during rapid steering corrections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/57T | Lower PPPM (400 W vs. 4600 W); SMA package (RθJC ≈ 45 °C/W); VC = 26.0 V at 12.3 A | Not suitable for load dump; limited to low-energy ESD/inductive spikes in non-automotive systems | Select only for cost-sensitive consumer applications with <500 W surge requirements |
| 1.5KE16A | Through-hole DO-201 package; same VWM/VBR but lower IPPM (120 A); PPPM = 1500 W | Lacks AEC-Q101 qualification and ISO7637-2 validation; unsuitable for automotive production | Consider only for prototyping or industrial controls where automotive reliability is not mandated |
Compared with SMAJ16A-E3/57T and 1.5KE16A, the SM6S16A-E3/2D delivers 11.5× higher surge power handling, integrated heatsink thermal path, and full automotive qualification-making it the sole choice for production-grade load dump protection in ECUs, BCMs, and ADAS modules.
Availability
SM6S16A-E3/2D is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and advanced driver assistance systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SM6S16A-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, rectifiers, MOSFETs, and optoelectronics with emphasis on high-reliability and automotive-grade components.
The SM6SxxA series is part of Vishay's PAR® TVS platform, engineered specifically for automotive load dump and ISO7637-2 transient immunity in harsh under-hood environments.
FAQ
What is the clamping voltage of the SM6S16A-E3/2D at its rated peak pulse current?
The SM6S16A-E3/2D has a maximum clamping voltage (VC) of 26.0 V when subjected to its specified peak pulse current (IPPM) of 177 A under a 10/1000 μs waveform. This value is measured at TC = 25 °C and ensures downstream components see no more than 26.0 V during worst-case transients. The SM6S16A-E3/2D maintains this clamping performance across its full operating temperature range up to 175 °C junction temperature.
Is the SM6S16A-E3/2D suitable for bidirectional transient protection?
No, the SM6S16A-E3/2D is a unidirectional TVS diode and provides protection only against negative-going transients on the cathode side. It does not suppress positive transients relative to ground. For bidirectional protection, a separate design using two unidirectional devices or a dedicated bidirectional TVS such as SMBJ16CA would be required. The SM6S16A-E3/2D polarity is fixed with the metal heatsink as the anode terminal.
Does the SM6S16A-E3/2D meet automotive qualification standards?
Yes, the SM6S16A-E3/2D is AEC-Q101 qualified and tested per the full stress test schedule for discrete semiconductors, including temperature cycling, high-temperature reverse bias, and ESD. It also meets ISO7637-2 Pulse 5a and 5b load dump requirements when mounted per recommended layout guidelines. These qualifications are explicitly stated in Vishay document 88384 for the SM6S16A-E3/2D and related variants.
What is the thermal resistance from junction to case for the SM6S16A-E3/2D?
The SM6S16A-E3/2D has a typical junction-to-case thermal resistance (RθJC) of 0.95 °C/W, as specified in the Vishay datasheet. This low value is enabled by the DO-218AB package's integrated metal heatsink, which serves as both the anode terminal and primary thermal conduction path. Effective PCB copper area under the heatsink is essential to realize this thermal performance in actual application.
How does the SM6S16A-E3/2D differ from the non-A version (SM6S16)?
The SM6S16A-E3/2D has tighter VBR tolerance (17.8–19.7 V) versus SM6S16 (17.8–21.8 V), resulting in more consistent clamping onset and reduced unit-to-unit variation in production systems. Both share identical package, power ratings, and AEC-Q101 qualification, but the "A" suffix denotes ±5 % breakdown voltage tolerance-critical for designs requiring precise overvoltage threshold control. The SM6S16A-E3/2D is the preferred version for automotive safety-critical applications.
SM6S16A-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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 177A
- Power - Peak Pulse:
- 4600W (4.6kW)
- 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
SM6S16A-E3/2D FAQ
1.How can I place an order for SM6S16A-E3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S16A-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 SM6S16A-E3/2D reliable?
The price and inventory of SM6S16A-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 SM6S16A-E3/2D is usually 5 days.
3.What payment methods are accepted for SM6S16A-E3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S16A-E3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S16A-E3/2D?
SM6S16A-E3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S16A-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 SM6S16A-E3/2D?
For technical support, including SM6S16A-E3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S16A-E3/2D requirements.
6.How does Aetrix verify that SM6S16A-E3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S16A-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 SM6S16A-E3/2D meets industry standards.
7.What is the process for return or replacement of SM6S16A-E3/2D?
All SM6S16A-E3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S16A-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 SM6S16A-E3/2D part is unused and in its original packaging.
Return procedure for SM6S16A-E3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S16A-E3/2D Tags
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