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Vishay General Semiconductor - Diodes Division SM6S16HE3/2D
- Part No.:
- SM6S16HE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S16HE3/2D.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,700
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Product details
Overview
SM6S16HE3/2D 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 V stand-off voltage (VWM), 17.8–21.8 V breakdown range (VBR), 28.8 V clamping voltage at 160 A peak pulse current, 4600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the SM6S16HE3/2D datasheet, SM6S16HE3/2D pinout, SM6S16HE3/2D application, or SM6S16HE3/2D 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
The SM6S16HE3/2D operates as a unidirectional clamping TVS diode with anode-connected heatsink configuration. Its junction passivated anisotropic rectifier structure enables stable operation up to TJ = 175 °C and supports high-reliability automotive environments where thermal cycling and surge robustness are critical.
It delivers 4600 W peak pulse power under 10/1000 µs waveform and maintains clamping performance across temperature - VC = 28.8 V at IPPM = 160 A (TA = 25 °C), with derating governed by Fig. 1's power curve and validated per JESD22-B102 solderability and JESD201 Class 2 whisker resistance.
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 / 21.8 V - breakdown initiates within this range at IT = 5 mA, defining turn-on threshold tolerance |
| VC @ IPPM | 28.8 V - clamping voltage at 160 A peak pulse ensures downstream ICs see ≤28.8 V during load dump events |
| PPPM (10/1000 µs) | 4600 W - surge energy handling capability compatible with ISO7637-2 Pulse 5a/b test profiles |
| TJ max. | +175 °C - enables placement near hot engine control units without derating loss |
| RθJC | 0.95 °C/W - low thermal resistance from junction to case supports efficient heat transfer to PCB copper or heatsink |
| Leakage @ VWM | <10 µA at 25 °C - minimizes standby power loss in always-on vehicle modules |
Pinout & Package
Package: DO-218AB - molded surface-mount case with integral metal heatsink (cathode-side tab), UL 94 V-0 rated, matte tin-plated leads, MSL Level 1 (245 °C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode | Connected to protected line (e.g., battery rail); polarity must match unidirectional clamping direction |
| Lead 2 / Metal Heatsink | Cathode | Primary thermal path and electrical return; requires direct connection to large copper pour or chassis ground |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivated anisotropic rectifier technology | Enables stable VBR and low leakage over 1000+ thermal cycles at 175 °C |
| AEC-Q101 qualification | Validated reliability for automotive powertrain and body electronics per stress test requirements |
| DO-218AB thermal design | Integral metal heatsink reduces RθJC to 0.95 °C/W - 40% lower than standard SMA packages |
| ISO7637-2 compliance | Withstands ≥4600 W load dump surges (Pulse 5a/b) without degradation when mounted per recommended pad layout |
| MSL Level 1 rating | Allows single-pass reflow at 245 °C peak without popcorn or delamination risk |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Rail Clamping |
|---|---|
Use Scenario: Protects 5 V/3.3 V microcontroller power rails from 12 V battery system transients during alternator load dump. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery feed and DC-DC input capacitor. Use Value: Limits voltage to ≤28.8 V during 4600 W surges, preventing latch-up or damage to downstream regulators and MCUs. | Use Scenario: Shields LIN bus transceivers and CAN PHY power supplies from coupled battery rail noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on BCM 12 V input, upstream of local LDOs and interface ICs. Use Value: Maintains <10 µA leakage at 16 V, avoiding quiescent current penalties in always-on sleep modes. |
| Automotive Lighting Driver Protection | Start-Stop System Voltage Supervisor Clamp |
Use Scenario: Safeguards LED driver ICs in headlamp modules exposed to repeated switching surges from inductive ballasts. IC Role / Device Role / Timing Role: Fast-response clamping device parallel to input bulk capacitor, triggered within nanoseconds. Use Value: Withstands 600 A IFSM (8.3 ms half-sine), enabling robust protection against repetitive lamp-switching events. | Use Scenario: Stabilizes voltage monitoring circuitry during cranking and restart transients in 12 V start-stop systems. IC Role / Device Role / Timing Role: Clamping element in supervisor IC reference path, ensuring accurate brown-out detection. Use Value: 175 °C TJ rating allows placement adjacent to high-temp DC-DC converters without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5AT | Lower PPPM (400 W vs. 4600 W); SMA package (RθJC ≈ 45 °C/W); VBR = 17.8–19.7 V | Not suitable for load dump; limited to ESD/inductive spike suppression in non-automotive contexts | Select only for space-constrained consumer-grade boards with sub-100 W surge requirements |
| 1.5KE16CA | Through-hole DO-201 package; higher VBR (17.8–21.2 V); same 16 V VWM; 1500 W PPPM (10/1000 µs) | Lacks AEC-Q101 and ISO7637-2 validation; unsuitable for production automotive use | Acceptable for prototyping or industrial non-automotive systems requiring higher surge margin than SMAJ but no automotive qualification |
Compared with SMAJ16A-E3/5AT and 1.5KE16CA, the SM6S16HE3/2D uniquely combines AEC-Q101 qualification, DO-218AB thermal efficiency, and 4600 W load dump capability - making it the only viable choice for production automotive power rail protection where reliability and regulatory compliance are mandatory.
Availability
SM6S16HE3/2D is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and lighting driver designs requiring stable component supply with full AEC-Q101 traceability and ISO7637-2 compliance.
Supply support for SM6S16HE3/2D 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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SM6S series belongs to Vishay's PAR® (Protection Against Transients) family - engineered specifically for automotive-grade transient suppression with emphasis on thermal stability, surge endurance, and AEC-Q101 conformance.
FAQ
What is the clamping voltage of the SM6S16HE3/2D at its rated peak pulse current?
The SM6S16HE3/2D has a maximum clamping voltage (VC) of 28.8 V at its rated peak pulse current (IPPM) of 160 A under a 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuits during worst-case surge events. The SM6S16HE3/2D maintains this clamping performance across its operational temperature range, with minor increases at elevated junction temperatures.
Is the SM6S16HE3/2D suitable for bidirectional transient protection?
No, the SM6S16HE3/2D is a unidirectional TVS diode and is not suitable for bidirectional protection. Its internal structure and polarity marking (heatsink = cathode, lead 1 = anode) support clamping only in the reverse direction. For bidirectional applications such as data line ESD protection, a different part like the SMBJ16CA or a dedicated bidirectional TVS array would be required. The SM6S16HE3/2D is optimized for DC power rail protection where polarity is fixed.
Does the SM6S16HE3/2D meet automotive qualification standards?
Yes, the SM6S16HE3/2D is AEC-Q101 qualified and meets ISO7637-2 surge test requirements for automotive load dump protection. It is also rated for operation up to TJ = 175 °C and passes JESD201 Class 2 whisker testing and J-STD-020 MSL Level 1 reflow compatibility. These qualifications are explicitly stated in Vishay document 88384 and confirmed in the ordering information and mechanical data sections.
What is the thermal resistance from junction to case (RθJC) for the SM6S16HE3/2D?
The SM6S16HE3/2D has a typical thermal resistance from junction to case (RθJC) of 0.95 °C/W, as specified in the Thermal Characteristics table of Vishay document 88384. This low value results from the DO-218AB package's integrated metal heatsink and enables effective heat dissipation into PCB copper or external heatsinks - critical for sustaining high-power surge events without thermal runaway. The SM6S16HE3/2D's RθJC is approximately 40× better than standard SMA packages.
How does the SM6S16HE3/2D differ from the SM6S16A variant?
The SM6S16HE3/2D has a broader breakdown voltage range (17.8–21.8 V) versus the SM6S16A (17.8–19.7 V), reflecting tighter VBR tolerance in the "A" version. Both share identical VWM (16.0 V), VC (28.8 V), PPPM (4600 W), and packaging. The "A" suffix denotes ±5 % VBR tolerance; the base SM6S16 (and thus SM6S16HE3/2D) carries ±10 %. Designers selecting SM6S16HE3/2D accept wider VBR variation for cost and availability advantages in non-critical clamping thresholds.
SM6S16HE3/2D 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:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 160A
- 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
SM6S16HE3/2D FAQ
1.How can I place an order for SM6S16HE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S16HE3/2D 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 SM6S16HE3/2D reliable?
The price and inventory of SM6S16HE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S16HE3/2D is usually 5 days.
3.What payment methods are accepted for SM6S16HE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S16HE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S16HE3/2D?
SM6S16HE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S16HE3/2D 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 SM6S16HE3/2D?
For technical support, including SM6S16HE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S16HE3/2D requirements.
6.How does Aetrix verify that SM6S16HE3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S16HE3/2D 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 SM6S16HE3/2D meets industry standards.
7.What is the process for return or replacement of SM6S16HE3/2D?
All SM6S16HE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S16HE3/2D, 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 SM6S16HE3/2D part is unused and in its original packaging.
Return procedure for SM6S16HE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S16HE3/2D Tags
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