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Vishay General Semiconductor - Diodes Division SM5S16AHE3/2D
- Part No.:
- SM5S16AHE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S16AHE3/2D.pdf
- Description:
- TVS DIODE 16VWM 26VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,737
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Product details
Overview
SM5S16AHE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) 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 138 A peak pulse current, 3600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the SM5S16AHE3/2D datasheet, SM5S16AHE3/2D pinout, SM5S16AHE3/2D application, or SM5S16AHE3/2D equivalent, key selection criteria include unidirectional polarity, DO-218AB package thermal performance (RθJC = 1.0 °C/W), 175 °C junction rating, low leakage (<10 μA at VWM), and ISO7637-2 compliance for automotive transients.
Technical Context
The SM5S16AHE3/2D employs passivated anisotropic rectifier technology optimized for high-temperature stability and surge robustness. Its unidirectional configuration uses the metal heatsink as anode, enabling direct mounting to PCB ground planes for low-inductance transient shunting in 12 V automotive systems.
It delivers 3600 W peak pulse power with 10/1000 μs waveform and sustains 2800 W with 10/10 000 μs waveform-critical for load dump events per ISO7637-2. The device operates across -55 °C to +175 °C and meets MSL Level 1 reflow requirements (245 °C peak).
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 - Clamping voltage at 138 A peak pulse; limits downstream voltage stress during transients |
| PPPM (10/1000 μs) | 3600 W - Peak surge energy handling capability for short-duration automotive spikes |
| TJ max. | +175 °C - Enables placement near hot engine control units without derating |
| ID @ VWM | <10 μA - Low reverse leakage preserves battery life in always-on vehicle modules |
| RθJC | 1.0 °C/W - Thermal resistance from junction to case supports efficient heat transfer to heatsink or copper pour |
Pinout & Package
Package: DO-218AB - Surface-mount, single-ended, anode-connected metal heatsink package with matte tin-plated leads; UL 94 V-0 rated molding compound; JESD201 Class 2 whisker resistant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected circuit node; carries transient current into device during overvoltage |
| Lead 2 / Metal Heatsink | Anode | Electrically and thermally connected to system ground; serves as primary heat path and return path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| Junction passivation | Enhanced reliability under high-temperature bias stress (TJ = 175 °C) and long-term operation |
| Low forward voltage drop | VF ≤ 2.0 V at 100 A enables minimal conduction loss during high-current surges |
| ISO7637-2 compliance | Meets automotive load dump and switching transient immunity requirements per test condition |
| MSL Level 1 | Compatible with standard SMT reflow profiles up to 245 °C peak without moisture-induced damage |
Applications
| Automotive Engine Control Unit (ECU) Protection | Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Protects 12 V supply rail of engine ECU against load dump transients during alternator disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamps voltage spikes to ≤26.0 V within nanoseconds, preventing MOSFET gate oxide failure and microcontroller latch-up. Use Value: Enables reliable operation at TJ = 175 °C ambient and withstands repeated 3600 W pulses without degradation. | Use Scenario: Shields BCM power input from inductive switching noise generated by door lock actuators and window motors. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at board-level input filter stage to limit voltage overshoot before DC/DC converter input. Use Value: Low 10 μA leakage at 16.0 V VWM minimizes standby current draw in always-on vehicle networks. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Infotainment Head Unit Power Supply |
Use Scenario: Safeguards 12 V input of rear-view camera module mounted near exhaust components. IC Role / Device Role / Timing Role: Primary overvoltage protection element with metal heatsink directly soldered to thermal pad for sustained 5 W dissipation. Use Value: RθJC = 1.0 °C/W ensures junction temperature remains within spec even during extended high-temperature operation. | Use Scenario: Guards infotainment head unit power rail against jump-start surges and battery reversal transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed upstream of fuse and input capacitor to absorb fast-rising transients before filtering stages. Use Value: Meets ISO7637-2 Pulse 5a/b test requirements with verified clamping performance at 138 A IPPM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5AT | Lower PPPM (400 W vs. 3600 W); SMA package (RθJC ≈ 40 °C/W); VBR = 17.8–19.7 V same | Not suitable for load dump; limited to low-energy ESD/inductive spikes in non-automotive consumer gear | Select only for cost-sensitive, low-surge applications where thermal mass and peak power are not critical |
| TPSMD16A | Same DO-218AB package; higher VC = 27.5 V at 130 A; lower IFSM = 200 A (vs. 500 A) | Acceptable for general automotive use but less robust under repetitive high-current surges | Prefer SM5S16AHE3/2D when full ISO7637-2 load dump compliance and 500 A surge tolerance are required |
Compared with SMAJ16A-E3/5AT and TPSMD16A, SM5S16AHE3/2D delivers 9× higher peak pulse power, superior thermal management via metal heatsink, and validated AEC-Q101 qualification-making it the only choice for demanding automotive load dump protection where reliability and thermal endurance are non-negotiable.
Availability
SM5S16AHE3/2D is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera systems, and infotainment head units requiring stable component supply and long-term production continuity.
Supply support for SM5S16AHE3/2D 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, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The SM5SxxA series is engineered specifically for automotive load dump and high-energy transient suppression, combining high-temperature junction capability (175 °C), robust surge ratings, and AEC-Q101 validation for under-hood deployment.
FAQ
What is the clamping voltage of the SM5S16AHE3/2D at its rated peak pulse current?
The SM5S16AHE3/2D has a maximum clamping voltage (VC) of 26.0 V at its specified peak pulse current (IPPM) of 138 A using the 10/1000 μs waveform. This value is measured per the conditions defined in the Vishay datasheet Document Number 88382 and ensures downstream ICs remain within safe operating voltage limits during transient events.
Is the SM5S16AHE3/2D suitable for bidirectional transient protection?
No, the SM5S16AHE3/2D is a unidirectional TVS diode only. Its internal structure and polarity marking (anode on metal heatsink) require correct orientation in-circuit. For bidirectional protection, a separate part such as SM5S16CAHE3/2D would be required-SM5S16AHE3/2D must be used with cathode toward the protected line and anode grounded.
Does the SM5S16AHE3/2D meet AEC-Q101 qualification?
Yes, the SM5S16AHE3/2D is explicitly AEC-Q101 qualified as stated in the Vishay datasheet (Document Number 88382, Revision 22-Jul-16). This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing-confirming suitability for automotive under-hood applications.
What is the thermal resistance from junction to case (RθJC) for the SM5S16AHE3/2D?
The SM5S16AHE3/2D has a typical thermal resistance of RθJC = 1.0 °C/W, as specified in the Thermal Characteristics section of the Vishay datasheet. This low value results from its DO-218AB package design with direct metal heatsink contact, enabling efficient heat transfer to the PCB copper pour or external heatsink.
Can the SM5S16AHE3/2D be used in non-automotive applications?
Yes, the SM5S16AHE3/2D can be deployed in any high-reliability 12 V system requiring robust transient suppression-including industrial motor drives, telecom power supplies, and medical equipment with stringent surge immunity needs. Its 175 °C rating and 3600 W pulse capability provide margin beyond typical commercial requirements, though ISO7637-2 compliance is specifically validated for automotive use cases.
SM5S16AHE3/2D 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):
- 138A
- 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
SM5S16AHE3/2D FAQ
1.How can I place an order for SM5S16AHE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S16AHE3/2D 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 SM5S16AHE3/2D reliable?
The price and inventory of SM5S16AHE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S16AHE3/2D is usually 5 days.
3.What payment methods are accepted for SM5S16AHE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S16AHE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S16AHE3/2D?
SM5S16AHE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S16AHE3/2D 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 SM5S16AHE3/2D?
For technical support, including SM5S16AHE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S16AHE3/2D requirements.
6.How does Aetrix verify that SM5S16AHE3/2D is sourced from the original manufacturer or authorized distributors?
All SM5S16AHE3/2D 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 SM5S16AHE3/2D meets industry standards.
7.What is the process for return or replacement of SM5S16AHE3/2D?
All SM5S16AHE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM5S16AHE3/2D, 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 SM5S16AHE3/2D part is unused and in its original packaging.
Return procedure for SM5S16AHE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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