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Vishay General Semiconductor - Diodes Division SM6S14AHE3/2D
- Part No.:
- SM6S14AHE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S14AHE3/2D.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,169
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Product details
Overview
SM6S14AHE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AB package, rated for 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown (VBR), 23.2 V clamping at 198 A peak pulse current (10/1000 μs), and 4600 W peak pulse power. It operates from −55 °C to +175 °C and is AEC-Q101 qualified for automotive load dump protection.
For engineers reviewing the SM6S14AHE3/2D datasheet, SM6S14AHE3/2D pinout, SM6S14AHE3/2D application, or SM6S14AHE3/2D equivalent, this page delivers verified electrical specs, thermal performance data, mechanical dimensions, and direct alternative part guidance for high-reliability automotive and industrial surge protection design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for stable operation up to TJ = 175 °C. Its unidirectional polarity and low forward voltage drop (≤1.9 V at 100 A) support robust clamping during load dump transients.
The device meets ISO7637-2 surge requirements under defined test conditions and achieves MSL Level 1 per J-STD-020 with 245 °C reflow peak. Its DO-218AB package features a metal heatsink terminal acting as the anode, enabling efficient thermal dissipation via PCB mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/typ/max) | 15.6 / 16.4 / 17.2 V at 5 mA - precise breakdown threshold defining turn-on sensitivity |
| VC @ IPPM | 23.2 V at 198 A (10/1000 μs) - clamping voltage limiting downstream circuit stress during surge |
| PPPM | 4600 W (10/1000 μs) - peak transient energy absorption capability for automotive load dump events |
| TJ max. | +175 °C - enables use in under-hood automotive environments without derating |
| ID @ VWM | 10 μA at 25 °C - ultra-low leakage preserves battery life in always-on systems |
| RθJM | 0.45 °C/W - low junction-to-mount thermal resistance supports direct heatsink coupling |
Pinout & Package
Package: DO-218AB - surface-mount, anode-heatsink configuration with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected line; carries transient current into device during clamping |
| Lead 2 / Metal Heatsink | Anode | Primary thermal path and DC return; must be soldered to large copper area for RθJM = 0.45 °C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive electronics including engine control, body modules, and ADAS sensors |
| Junction passivation optimized design | Stable VBR drift ≤0.078 %/°C ensures predictable clamping across temperature extremes |
| DO-218AB metal heatsink terminal | Enables direct thermal coupling to PCB ground plane, reducing thermal impedance by >90 % vs. standard SMC |
| ISO7637-2 compliance (test-condition dependent) | Meets automotive transient immunity requirements for 12 V system load dump pulses |
| MSL Level 1, 245 °C peak reflow | Supports single-pass lead-free assembly without moisture-related popcorn failure |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: 12 V vehicle electrical system experiences 35 V, 400 ms load dump transients when alternator field is interrupted. IC Role / Device Role / Timing Role: Unidirectional TVS clamps input rail to ≤23.2 V within nanoseconds, protecting downstream LDOs and microcontrollers. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies while maintaining AEC-Q101 reliability certification. |
Use Scenario: ECU receives sensor signals over long harnesses exposed to switching noise and inductive kickback from solenoids. IC Role / Device Role / Timing Role: SM6S14AHE3/2D placed at connector interface shunts induced surges before reaching analog front-end and CAN transceivers. Use Value: Limits transient-induced signal corruption and resets, ensuring deterministic fault detection and diagnostic coverage. |
| Body Control Module (BCM) Power Input | ADAS Camera Power Rail Protection |
Use Scenario: BCM powered directly from battery experiences repeated cold-crank and jump-start voltage spikes up to 28 V. IC Role / Device Role / Timing Role: TVS absorbs repetitive 10/1000 μs surges with <10 μA leakage to avoid battery drain in sleep mode. Use Value: Maintains >10-year field life in 24/7 always-on modules without compromising quiescent current budget. |
Use Scenario: Front-facing camera module draws power from vehicle infotainment bus, subject to ESD and conducted RF noise. IC Role / Device Role / Timing Role: SM6S14AHE3/2D provides primary overvoltage defense upstream of DC-DC converter and image sensor. Use Value: Clamps fast-rising transients (<1 ns rise time) without oscillation, preserving video integrity and avoiding frame drops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S14AHM3 | Same VWM/VBR/VC specs; HM3 suffix indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified variant with updated material content | No functional change; intended as direct replacement for HE3-series in new designs requiring updated environmental compliance | Select SM6S14AHM3 for new designs where halogen-free materials and latest AEC-Q101 revision are mandatory |
| SMAJ14A | Lower PPPM (400 W vs. 4600 W); SMA package (RθJA = 65 °C/W vs. DO-218AB's RθJM = 0.45 °C/W); no AEC-Q101 qualification | Not suitable for automotive load dump; limited to low-energy I/O or board-level ESD protection | Use SMAJ14A only in cost-sensitive consumer or industrial applications with sub-100 A surge requirements |
Compared with SM6S14AHE3/2D, SM6S14AHM3 offers identical electrical and thermal performance with updated environmental compliance, while SMAJ14A provides basic clamping at one-tenth the surge capacity and lacks automotive qualification-making SM6S14AHE3/2D irreplaceable for high-energy load dump scenarios.
Availability
SM6S14AHE3/2D is available at Aetrix Electronics and suitable for automotive load dump protection, engine control unit (ECU) input safeguarding, and body control module (BCM) power rail stabilization requiring stable component supply across extended production lifecycles.
Supply support for SM6S14AHE3/2D 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SM6SxxA family was engineered specifically for automotive-grade transient suppression, emphasizing high-temperature stability (TJ = 175 °C), ISO7637-2 compliance, and robust thermal performance in DO-218AB packaging.
FAQ
What is the clamping voltage of SM6S14AHE3/2D at its rated peak pulse current?
The SM6S14AHE3/2D has a maximum clamping voltage (VC) of 23.2 V when subjected to its specified peak pulse current of 198 A using the 10/1000 μs waveform. This value is measured at TC = 25 °C and defines the upper voltage limit imposed on protected circuits during surge events, ensuring downstream ICs remain within safe operating ranges.
Is SM6S14AHE3/2D suitable for automotive load dump protection per ISO7637-2?
Yes, SM6S14AHE3/2D meets ISO7637-2 surge specification under defined test conditions, including Pulse 5a (load dump). Its 4600 W peak pulse power rating and 175 °C junction temperature capability make it appropriate for 12 V automotive systems where sustained 35 V transients occur. Confirmation requires validation against specific vehicle manufacturer test plans.
What does the "HE3" suffix mean in SM6S14AHE3/2D?
The "HE3" suffix in SM6S14AHE3/2D indicates RoHS-compliant construction, AEC-Q101 qualification, and compliance with JESD 201 Class 2 whisker resistance testing. The "H" denotes automotive-grade qualification, "E3" specifies non-halogen-free, Pb-free termination, and "2D" refers to internal Vishay manufacturing lot traceability code-not a functional variant.
How does the DO-218AB package of SM6S14AHE3/2D improve thermal performance over standard SMC packages?
The DO-218AB package of SM6S14AHE3/2D integrates a metal heatsink terminal (anode) that provides a direct thermal path to the PCB, achieving RθJM = 0.45 °C/W-over 90 % lower than typical RθJA values of SMC-packaged TVS diodes. This allows effective heat removal during high-energy surges without requiring external heatsinks.
What is the maximum reverse leakage current of SM6S14AHE3/2D at 14 V and 175 °C?
At VWM = 14.0 V and TJ = 175 °C, the SM6S14AHE3/2D exhibits a maximum reverse leakage current (ID) of 10 μA. This ultra-low leakage preserves battery standby current in always-on automotive modules and ensures minimal power loss in high-temperature under-hood environments.
SM6S14AHE3/2D 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 198A
- 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
SM6S14AHE3/2D FAQ
1.How can I place an order for SM6S14AHE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S14AHE3/2D 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 SM6S14AHE3/2D reliable?
The price and inventory of SM6S14AHE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S14AHE3/2D is usually 5 days.
3.What payment methods are accepted for SM6S14AHE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S14AHE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S14AHE3/2D?
SM6S14AHE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S14AHE3/2D 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 SM6S14AHE3/2D?
For technical support, including SM6S14AHE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S14AHE3/2D requirements.
6.How does Aetrix verify that SM6S14AHE3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S14AHE3/2D 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 SM6S14AHE3/2D meets industry standards.
7.What is the process for return or replacement of SM6S14AHE3/2D?
All SM6S14AHE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S14AHE3/2D, 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 SM6S14AHE3/2D part is unused and in its original packaging.
Return procedure for SM6S14AHE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S14AHE3/2D Tags
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