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Vishay General Semiconductor - Diodes Division SM8S16-E3/2D
- Part No.:
- SM8S16-E3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM8S16-E3/2D.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,885
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Product details
Overview
SM8S16-E3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection in high-reliability power systems. It features a 16.0 V stand-off voltage (VWM), 28.8 V maximum clamping voltage (VC) at 229 A peak pulse current (IPPM), and 6600 W peak pulse power (10/1000 μs), operating up to TJ = 175 °C in the DO-218AB package.
For engineers reviewing the SM8S16-E3/2D datasheet, SM8S16-E3/2D pinout, SM8S16-E3/2D application, or SM8S16-E3/2D equivalent, key selection criteria include its AEC-Q101 qualification, ISO7637-2 compliance for load dump transients, low leakage (<10 μA at VWM), and thermal resistance of 0.90 °C/W - all critical for under-hood automotive electronics design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for junction stability at elevated temperatures. Its unidirectional polarity and heatsink-anode configuration enable direct mounting to metal chassis for efficient thermal dissipation in high-surge environments.
The device delivers 6600 W surge capability with 10/1000 μs waveform and maintains ≤1.8 V forward voltage at 100 A, supporting robust protection against inductive switching transients and 12 V system load dump events per ISO7637-2. It meets MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 16.0 V - Maximum continuous reverse voltage before clamping begins; defines system operating margin in 12 V automotive circuits. |
| VC (Clamping Voltage) | 28.8 V at IPPM = 229 A - Peak voltage seen by protected IC during worst-case transient; ensures downstream components remain below absolute max ratings. |
| PPPM (10/1000 μs) | 6600 W - Surge energy handling capacity for short-duration spikes; enables single-device protection against ISO7637-2 Pulse 5a load dump. |
| TJ max | 175 °C - Maximum junction temperature rating; supports operation in engine compartment environments without derating. |
| RθJC | 0.90 °C/W - Thermal resistance from junction to case; allows precise thermal design when mounted on heatsink or PCB copper pour. |
| ID (Leakage @ VWM) | <10 μA at 25 °C - Minimal standby power loss and signal integrity impact in always-on vehicle modules. |
Pinout & Package
Package: DO-218AB - Surface-mount, thermally enhanced case with metal heatsink terminal (anode) and molded body meeting UL 94 V-0. Dimensions: 15.4 mm × 9.3 mm × 3.0 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected circuit node; carries transient current into device during overvoltage event. |
| Lead 2 / Metal Heatsink | Anode | Primary thermal path and electrical return; must be soldered to large copper area or chassis for effective heat dissipation and low-inductance grounding. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability across temperature cycling, humidity, and mechanical stress - required for ECU, body control, and ADAS module deployment. |
| ISO7637-2 compliant | Withstands standardized load dump pulses (Pulse 5a) without degradation - eliminates need for external series impedance or additional clamping stages. |
| Junction temperature rating (175 °C) | Enables placement near heat sources (e.g., power converters, motors) without thermal shutdown or parameter drift in engine bay applications. |
| Low RθJC (0.90 °C/W) | Reduces thermal bottleneck between junction and heatsink; supports >5 kW surge handling with minimal ΔT rise during repetitive transients. |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protects microcontroller and CAN transceiver power rails from alternator load dump and relay coil flyback in BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and DC/DC input stage. Use Value: Limits transient voltage to ≤28.8 V during 6600 W surges, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. |
Use Scenario: Shields ECU main 12 V supply against ISO7637-2 Pulse 5a (load dump) and Pulse 1 (inductive switch-off). IC Role / Device Role / Timing Role: Primary front-end surge suppression element directly at connector entry point. Use Value: Maintains system uptime by absorbing 10/1000 μs transients without failure, validated to AEC-Q101 for 15+ year vehicle life. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Safeguards image sensor and ISP power domains in rear-view and surround-view cameras exposed to battery line noise. IC Role / Device Role / Timing Role: Standoff-clamp TVS on 12 V to 5 V/3.3 V buck converter input. Use Value: Ensures <10 μA leakage at 16 V avoids quiescent current violations in always-on camera modules. |
Use Scenario: Protects half-bridge gate drivers and MCU I/O from motor commutation spikes and battery reversal transients. IC Role / Device Role / Timing Role: Anode-grounded TVS on high-side driver supply rail with direct heatsink attachment. Use Value: Leverages 0.90 °C/W RθJC to sustain repeated 229 A surges without thermal runaway during EPS assist cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5AT | Lower PPPM (400 W vs. 6600 W); SMA package (RθJC ≈ 45 °C/W); bidirectional option available. | Not suitable for load dump; limited to low-energy ESD and inductive spikes in non-automotive consumer gear. | Select only for cost-sensitive, low-surge applications where AEC-Q101 and ISO7637-2 compliance are not required. |
| TPSMD16CA | Bi-directional; same DO-218AB package; lower clamping (24.4 V) but reduced PPPM (5300 W); AEC-Q101 qualified. | Applicable where reverse polarity protection is needed (e.g., dual-battery systems), but less effective for asymmetric load dump. | Prefer for designs requiring reverse-voltage tolerance; avoid if unidirectional clamping and maximum surge headroom are prioritized. |
Compared with SMAJ16A-E3/5AT and TPSMD16CA, the SM8S16-E3/2D delivers 16× higher surge power and superior thermal performance in the same footprint - making it the only choice for ISO7637-2-compliant automotive power rail protection where clamping voltage margin and junction temperature stability are non-negotiable.
Availability
SM8S16-E3/2D is available at Aetrix Electronics and suitable for automotive body electronics, engine management systems, and ADAS power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SM8S16-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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SM8Sxx family is engineered specifically for automotive load dump and inductive switching protection, combining high-temperature operation, AEC-Q101 validation, and industry-leading surge power density in the DO-218AB package.
FAQ
What is the clamping voltage of the SM8S16-E3/2D at its rated peak pulse current?
The SM8S16-E3/2D has a maximum clamping voltage (VC) of 28.8 V when subjected to its specified peak pulse current (IPPM) of 229 A using a 10/1000 μs waveform. This value is measured under TC = 25 °C conditions and guarantees that protected circuitry remains within safe operating limits during standardized load dump events. The SM8S16-E3/2D maintains this clamping performance across its full operating temperature range.
Is the SM8S16-E3/2D suitable for ISO7637-2 Pulse 5a compliance testing?
Yes, the SM8S16-E3/2D is explicitly designed and validated to meet ISO7637-2 Pulse 5a (load dump) requirements. Its 6600 W peak pulse power rating, 175 °C junction temperature capability, and low clamping voltage ensure reliable suppression of the high-energy, exponentially decaying transients defined in that standard. The SM8S16-E3/2D is routinely deployed in production automotive ECUs for this exact purpose.
What does the "-E3/2D" suffix indicate in SM8S16-E3/2D?
The "-E3" suffix denotes RoHS-compliant, matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 2 whisker resistance. The "/2D" indicates packaging in 13-inch plastic tape and reel with 750 units per reel, anode oriented toward the sprocket hole. This full designation confirms the SM8S16-E3/2D meets automotive manufacturing and assembly requirements for lead-free reflow and automated pick-and-place.
How does the thermal performance of SM8S16-E3/2D compare to standard SMAJ devices?
The SM8S16-E3/2D achieves a junction-to-case thermal resistance (RθJC) of 0.90 °C/W - over 50× better than typical SMAJ devices (~45 °C/W). This enables the SM8S16-E3/2D to dissipate 6600 W surges without excessive temperature rise, whereas SMAJ16A-E3/5AT would fail catastrophically under identical conditions. The SM8S16-E3/2D's DO-218AB package with metal heatsink is essential for this performance.
Can SM8S16-E3/2D replace SM8S16A-E3/2D in existing designs?
No - the SM8S16-E3/2D (breakdown VBR min/max: 17.8–21.8 V) and SM8S16A-E3/2D (VBR min/max: 17.8–19.7 V) differ in breakdown voltage distribution and clamping behavior (VC = 28.8 V vs. 26.0 V). While both are unidirectional and share the same package, the tighter VBR tolerance of the "A" variant results in earlier turn-on and lower clamping. Substitution requires verification of system-level overvoltage margins and may affect surge lifetime. The SM8S16-E3/2D is not a drop-in replacement for SM8S16A-E3/2D.
SM8S16-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:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 229A
- Power - Peak Pulse:
- 6600W (6.6kW)
- 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
SM8S16-E3/2D FAQ
1.How can I place an order for SM8S16-E3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM8S16-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 SM8S16-E3/2D reliable?
The price and inventory of SM8S16-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 SM8S16-E3/2D is usually 5 days.
3.What payment methods are accepted for SM8S16-E3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM8S16-E3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM8S16-E3/2D?
SM8S16-E3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM8S16-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 SM8S16-E3/2D?
For technical support, including SM8S16-E3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM8S16-E3/2D requirements.
6.How does Aetrix verify that SM8S16-E3/2D is sourced from the original manufacturer or authorized distributors?
All SM8S16-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 SM8S16-E3/2D meets industry standards.
7.What is the process for return or replacement of SM8S16-E3/2D?
All SM8S16-E3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM8S16-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 SM8S16-E3/2D part is unused and in its original packaging.
Return procedure for SM8S16-E3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM8S16-E3/2D Tags
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