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Vishay General Semiconductor - Diodes Division SM6S30A-E3/2D
- Part No.:
- SM6S30A-E3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S30A-E3/2D.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,521
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Product details
Overview
SM6S30A-E3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection in 12 V systems. It features a 30.0 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage at 95 A peak pulse current, and 4600 W peak pulse power (10/1000 μs). Its DO-218AB package supports high-reliability underhood applications up to TJ = 175 °C.
For engineers reviewing the SM6S30A-E3/2D datasheet, SM6S30A-E3/2D pinout, SM6S30A-E3/2D application, or SM6S30A-E3/2D equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, ISO7637-2 compliance for load dump transients, low leakage (<10 μA at VWM), and thermal resistance of 0.95 °C/W (junction-to-case).
Technical Context
The SM6S30A-E3/2D operates as a unidirectional avalanche diode with anode-connected heatsink configuration, optimized for fast clamping of high-energy transients in automotive power nets. Its junction passivation and anisotropic rectifier technology enable stable operation at TJ = 175 °C and low forward voltage drop (VF ≤ 1.9 V at 100 A).
It meets MSL Level 1 per J-STD-020 (peak reflow 245 °C), passes JESD201 Class 2 whisker testing, and delivers 3600 W surge capability under 10/10,000 μs waveform-critical for sustained load dump events defined in ISO7637-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 33.3 V / 36.8 V - Breakdown threshold range at 5 mA test current; defines turn-on consistency |
| VC @ IPPM | 48.4 V - Clamped voltage at 95 A peak pulse current; determines protected circuit stress level |
| PPPM (10/1000 μs) | 4600 W - Peak transient energy absorption capacity for short-duration surges |
| TJ max. | 175 °C - Maximum junction temperature; enables underhood placement without derating |
| RθJC | 0.95 °C/W - Thermal resistance from junction to case; supports efficient heatsinking via metal tab |
| ID @ VWM | <10 μA - Low reverse leakage ensures minimal standby power loss in battery-critical systems |
Pinout & Package
Package: DO-218AB - Surface-mount, single-ended anode-heatsink configuration with matte tin-plated leads. Metal heatsink (Lead 2) serves as cathode connection and primary thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode | Connected to protected line; reverse-biased during normal operation; conducts during overvoltage |
| Lead 2 / Metal Heatsink | Cathode | Primary thermal interface and electrical return; must be soldered to large copper area for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| ISO7637-2 compliant | Withstands load dump pulses up to 35 V × 100 ms (tested per specification conditions) |
| Junction passivated design | Reduces parameter drift and improves long-term stability under thermal stress and humidity |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns or baking requirements |
| Low VF (≤1.9 V @ 100 A) | Minimizes conduction losses during high-current surge events, reducing self-heating |
Applications
| Automotive Load Dump Protection | 12 V Power Rail Surge Suppression |
|---|---|
Use Scenario: Protecting engine control units (ECUs) and body control modules (BCMs) during alternator load dump events in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across battery input to clamp transients up to 35 V × 100 ms. Use Value: Prevents damage to downstream DC-DC converters and microcontrollers by limiting clamped voltage to 48.4 V at 95 A. | Use Scenario: Safeguarding infotainment head units and ADAS cameras against switching transients from solenoids and motors. IC Role / Device Role / Timing Role: Primary transient suppression device on main 12 V supply rail, mounted directly at connector entry point. Use Value: Delivers 4600 W peak pulse power handling with 0.95 °C/W thermal resistance for reliable heat dissipation in compact layouts. |
| Industrial Vehicle Power Systems | Commercial Truck Battery Management |
Use Scenario: Securing telematics gateways and fleet tracking modules in construction and agricultural equipment exposed to harsh vibration and wide temperature swings. IC Role / Device Role / Timing Role: High-temperature-stable TVS (TJ = 175 °C) used in conjunction with fuse and LC filter on main power input. Use Value: Maintains consistent clamping performance across -55 °C to +175 °C ambient, eliminating derating in sealed enclosures. | Use Scenario: Protecting battery monitoring ICs and charge controllers in multi-battery truck systems subject to repeated cranking and jump-start surges. IC Role / Device Role / Timing Role: Secondary protection stage after front-end TVS array; handles residual transients exceeding upstream clamping limits. Use Value: Provides 3600 W capability under 10/10,000 μs waveform-matching extended-duration ISO7637-2 Pulse 5b profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | DO-214AC package; lower PPPM (400 W); higher RθJC (45 °C/W); same VWM/VBR range | Limited to low-energy transients; unsuitable for ISO7637-2 load dump | Select only for cost-sensitive non-automotive applications with <500 W surge requirements |
| SMCJ30A | DO-214AB package; 1500 W PPPM (10/1000 μs); RθJC = 2.2 °C/W; AEC-Q101 qualified | Supports moderate automotive transients but not full load dump; smaller footprint than DO-218AB | Choose when board space is constrained and peak surge energy is ≤1500 W |
Compared with SMAJ30A and SMCJ30A, the SM6S30A-E3/2D delivers 3× higher surge power and 2× lower thermal resistance-enabling direct integration into high-reliability automotive power rails where sustained 35 V load dump events demand robust clamping and thermal management.
Availability
SM6S30A-E3/2D is available at Aetrix Electronics and suitable for automotive electronics, industrial vehicle control systems, and commercial truck battery management requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for SM6S30A-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 diodes, rectifiers, MOSFETs, and TVS devices with emphasis on reliability, power efficiency, and automotive qualification.
The SM6S series is engineered specifically for high-energy transient suppression in 12 V automotive power networks, targeting load dump and inductive switching events per ISO7637-2 while maintaining AEC-Q101 compliance and 175 °C junction capability.
FAQ
What is the clamping voltage of the SM6S30A-E3/2D at its rated peak pulse current?
The SM6S30A-E3/2D has a maximum clamping voltage (VC) of 48.4 V at 95 A peak pulse current (IPPM) under 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SM6S30A-E3/2D maintains this clamping performance across its full operating temperature range, ensuring predictable protection behavior in automotive environments.
Is the SM6S30A-E3/2D qualified for automotive use?
Yes, the SM6S30A-E3/2D is AEC-Q101 qualified and explicitly designed for automotive applications. It meets ISO7637-2 load dump requirements, operates reliably from -55 °C to +175 °C junction temperature, and passes MSL Level 1 reflow and JESD201 Class 2 whisker testing. These qualifications confirm that the SM6S30A-E3/2D satisfies the rigorous reliability and environmental stress standards required for underhood and powertrain electronics.
What package type does the SM6S30A-E3/2D use, and how is it mounted?
The SM6S30A-E3/2D uses the DO-218AB surface-mount package, featuring a metal heatsink tab (Lead 2) that serves as the cathode and primary thermal path. Lead 1 is the anode. Mounting requires soldering the metal tab to a large copper pour for effective heat dissipation. The package is compatible with standard 13" tape-and-reel delivery (E3/2D suffix) and supports automated assembly without moisture sensitivity concerns (MSL Level 1).
How does the SM6S30A-E3/2D differ from the SM6S30 (non-A) variant?
The SM6S30A-E3/2D has tighter breakdown voltage tolerance (33.3–36.8 V) compared to SM6S30 (33.3–40.7 V), resulting in more consistent clamping behavior and reduced unit-to-unit variation. Both share identical package, power ratings, and AEC-Q101 qualification, but the "A" suffix indicates ±5% VBR tolerance-critical for designs requiring precise overvoltage thresholds and predictable surge response across production batches.
Can the SM6S30A-E3/2D be used in bidirectional configurations?
No, the SM6S30A-E3/2D is unidirectional only, with polarity defined by anode (Lead 1) and cathode (metal heatsink/Lead 2). It is not rated for reverse-biased clamping. For bidirectional transient protection, separate unidirectional devices or purpose-built bidirectional TVS arrays must be used. The SM6S30A-E3/2D datasheet explicitly states "Available in uni-directional polarity only," and no bidirectional electrical characteristics are specified.
SM6S30A-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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 95A
- Power - Peak Pulse:
- 4600W (4.6kW)
- 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
SM6S30A-E3/2D FAQ
1.How can I place an order for SM6S30A-E3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S30A-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 SM6S30A-E3/2D reliable?
The price and inventory of SM6S30A-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 SM6S30A-E3/2D is usually 5 days.
3.What payment methods are accepted for SM6S30A-E3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S30A-E3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S30A-E3/2D?
SM6S30A-E3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S30A-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 SM6S30A-E3/2D?
For technical support, including SM6S30A-E3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S30A-E3/2D requirements.
6.How does Aetrix verify that SM6S30A-E3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S30A-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 SM6S30A-E3/2D meets industry standards.
7.What is the process for return or replacement of SM6S30A-E3/2D?
All SM6S30A-E3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S30A-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 SM6S30A-E3/2D part is unused and in its original packaging.
Return procedure for SM6S30A-E3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S30A-E3/2D Tags
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