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Vishay General Semiconductor - Diodes Division SM6S16AHE3/2D
- Part No.:
- SM6S16AHE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S16AHE3/2D.pdf
- Description:
- TVS DIODE 16VWM 26VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,171
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Product details
Overview
SM6S16AHE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection in high-reliability 12 V systems. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown range (VBR) at 5 mA, 4600 W peak pulse power (10/1000 μs), 26.0 V clamping voltage at 177 A, and operates up to TJ = 175 °C.
For engineers reviewing the SM6S16AHE3/2D datasheet, SM6S16AHE3/2D pinout, SM6S16AHE3/2D application, or SM6S16AHE3/2D equivalent, this page delivers verified electrical parameters, DO-218AB package details, AEC-Q101 qualification status, thermal resistance values, and real-world automotive protection use cases - all confirmed from Vishay's official document 88384.
Technical Context
The SM6S16AHE3/2D employs passivated anisotropic rectifier technology optimized for junction stability at TJ = 175 °C, enabling sustained operation in under-hood automotive environments. Its unidirectional polarity and heatsink-anode configuration support direct mounting to metal chassis for enhanced thermal dissipation.
It meets ISO 7637-2 load dump surge requirements with a 10 ms exponential waveform capability and complies with MSL Level 1 per J-STD-020 (245 °C peak reflow). The device exhibits low leakage (≤10 μA at VWM, ≤15 μA at TJ = 175 °C) and low forward voltage (VF ≤ 1.9 V at 100 A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines system working voltage margin in 12 V automotive circuits. |
| VBR (min/typ/max) | 17.8 / 18.8 / 19.7 V at 5 mA - Confirmed breakdown threshold ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 26.0 V at 177 A (10/1000 μs) - Clamping voltage limits downstream IC stress during load dump events per ISO 7637-2. |
| PPPM | 4600 W (10/1000 μs) - Peak surge handling capacity supports robust protection against high-energy inductive switching spikes. |
| TJ max. | 175 °C - Enables reliable operation in engine compartment locations without derating in high-ambient conditions. |
| RθJM | 0.45 °C/W - Low junction-to-mount thermal resistance allows efficient heat transfer to PCB copper or metal heatsink. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
Pinout & Package
Package: DO-218AB - Surface-mount molded case with matte tin-plated leads, UL 94 V-0 rated compound, anode connected to metal heatsink tab (Lead 2), cathode on Lead 1. Compliant with IPC 7351 footprint standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected circuit node; reverse-biased during normal operation; conducts during overvoltage events. |
| Lead 2 / Metal Heatsink | Anode | Electrically and thermally tied to chassis ground or heatsink; provides primary thermal path and low-inductance return path. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR over lifetime and temperature, critical for long-term automotive field reliability. |
| High-temperature operation | Rated for continuous operation at TJ = 175 °C - eliminates need for oversized heatsinking in confined engine bay layouts. |
| Low leakage current | ≤10 μA at VWM (25 °C), ≤15 μA at TJ = 175 °C - minimizes standby power loss and avoids false triggering in low-power control modules. |
| ISO 7637-2 compliance | Validated for load dump surge immunity using 10 ms exponential waveform - directly addresses OEM-level EMC requirements. |
| MSL Level 1 rating | Reflow-compatible up to 245 °C peak - supports standard SMT assembly without moisture sensitivity concerns or baking. |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protects BCM microcontroller and CAN transceivers from alternator load dump surges during battery disconnect/reconnect events. IC Role / Device Role: Unidirectional TVS placed between battery rail (+12 V) and ground, with anode mounted to chassis. Use Value: Clamps transients to ≤26.0 V, preventing damage to 3.3 V/5 V logic supplies and ensuring CAN bus integrity during ISO 7637-2 Pulse 5a/b tests. |
Use Scenario: Shields ECU main power input from inductive kickback generated by fuel injector or ignition coil drivers. IC Role / Device Role: Primary surge suppression device located at bulk input filter stage, upstream of DC/DC converters. Use Value: Absorbs 4600 W pulses without degradation, maintaining <10 μA leakage to avoid affecting precision sensor biasing networks. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) ECU |
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: Secondary protection after front-end fuse and LC filter; placed adjacent to PMIC input pins. Use Value: 175 °C junction rating enables placement near heat-generating image processors without thermal derating. |
Use Scenario: Secures EPS motor driver power stage against back-EMF and battery reversal-induced surges during fault conditions. IC Role / Device Role: High-current TVS integrated into power board layout with direct anode-to-chassis thermal interface. Use Value: 0.45 °C/W RθJM enables effective heat spreading into aluminum housing, sustaining repeated 177 A surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S16AHM3/2D | Same electrical specs and DO-218AB package; HM3 suffix indicates halogen-free, RoHS-compliant, AEC-Q101 qualified variant with improved whisker resistance (JESD 201 Class 2). | No functional change; intended as drop-in replacement for HE3-series in new designs where halogen-free compliance is mandated. | Select SM6S16AHM3/2D for new automotive designs requiring updated material compliance; SM6S16AHE3/2D remains valid for legacy production continuity. |
| SMAJ16A | Lower PPPM (400 W vs. 4600 W), SMA package (DO-214AC), 27.7 V VC at 12.9 A - not suitable for load dump; limited to lower-energy ESD/surge events. | Applicable only for board-level ESD protection or low-energy transients; cannot replace SM6S16AHE3/2D in ISO 7637-2 load dump scenarios. | Use SMAJ16A only for secondary protection or non-automotive industrial applications with <500 W surge requirements. |
Compared with SM6S16AHM3/2D, the SM6S16AHE3/2D offers identical surge performance but differs in material compliance and whisker testing grade; versus SMAJ16A, it delivers >11× higher peak power handling and is engineered specifically for automotive load dump - making it non-interchangeable in high-energy protection roles.
Availability
SM6S16AHE3/2D is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, ADAS camera power supplies, and electric power steering ECUs requiring stable component supply across extended production lifecycles.
Supply support for SM6S16AHE3/2D 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 protection devices with emphasis on automotive, industrial, and computing applications.
The SM6S16AHE3/2D belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for automotive load dump and ISO 7637-2 compliance in harsh-temperature environments up to 175 °C junction temperature.
FAQ
What is the clamping voltage of the SM6S16AHE3/2D at its rated peak pulse current?
The SM6S16AHE3/2D has a maximum clamping voltage (VC) of 26.0 V when subjected to its peak pulse current of 177 A under the standard 10/1000 μs waveform. This value is measured at TC = 25 °C and ensures downstream components remain within safe operating voltage limits during load dump events. The SM6S16AHE3/2D maintains this clamping performance across its full operating temperature range.
Is the SM6S16AHE3/2D qualified for automotive applications?
Yes, the SM6S16AHE3/2D is AEC-Q101 qualified and explicitly designed for automotive use. It meets ISO 7637-2 load dump requirements, operates reliably up to TJ = 175 °C, and is manufactured with processes validated for automotive-grade reliability including temperature cycling, highly accelerated life testing, and electrostatic discharge robustness. The SM6S16AHE3/2D carries the "H" grade designation confirming its automotive qualification status.
What does the "HE3" suffix mean in SM6S16AHE3/2D?
The "HE3" suffix in SM6S16AHE3/2D indicates RoHS-compliant construction (lead-free terminations), AEC-Q101 qualification ("H"), and compliance with JESD 201 Class 2 whisker testing ("E3"). The "2D" denotes tape-and-reel packaging with 750 units per reel and anode orientation toward sprocket holes. This suffix confirms the SM6S16AHE3/2D meets stringent automotive material and process requirements.
Can the SM6S16AHE3/2D be used in bidirectional configurations?
No, the SM6S16AHE3/2D is unidirectional only, with polarity clearly defined: the metal heatsink (Lead 2) is the anode and Lead 1 is the cathode. It is not rated for reverse standoff or clamping in the opposite direction. For bidirectional protection, a separate device such as the SMBJ16CA or dual-diode array would be required - the SM6S16AHE3/2D must be installed with correct orientation relative to system ground and supply rails.
What is the thermal resistance from junction to mount (RθJM) for the SM6S16AHE3/2D?
The SM6S16AHE3/2D has a typical junction-to-mount thermal resistance (RθJM) of 0.45 °C/W, measured per JEDEC 51-14 using the Transient Dual Interface Method. This low value reflects its optimized DO-218AB package design with direct metal heatsink contact, enabling efficient heat transfer to PCB copper pours or external chassis mounts - a key advantage over smaller packages like SMA or SMC in high-power automotive applications.
SM6S16AHE3/2D 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM6S16AHE3/2D FAQ
1.How can I place an order for SM6S16AHE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S16AHE3/2D 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 SM6S16AHE3/2D reliable?
The price and inventory of SM6S16AHE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S16AHE3/2D is usually 5 days.
3.What payment methods are accepted for SM6S16AHE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S16AHE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S16AHE3/2D?
SM6S16AHE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S16AHE3/2D 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 SM6S16AHE3/2D?
For technical support, including SM6S16AHE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S16AHE3/2D requirements.
6.How does Aetrix verify that SM6S16AHE3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S16AHE3/2D 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 SM6S16AHE3/2D meets industry standards.
7.What is the process for return or replacement of SM6S16AHE3/2D?
All SM6S16AHE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S16AHE3/2D, 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 SM6S16AHE3/2D part is unused and in its original packaging.
Return procedure for SM6S16AHE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S16AHE3/2D Tags
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