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Vishay General Semiconductor - Diodes Division SM6S30AHM3/I
- Part No.:
- SM6S30AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM6S30AHM3/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,405
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Product details
Overview
SM6S30AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in DO-218AB package, rated for 30 V stand-off voltage (VWM), 35.1 V nominal breakdown (VBR), 48.4 V clamping voltage at 95 A peak pulse current, and 4600 W peak pulse power (10/1000 μs). It delivers AEC-Q101 qualification, 175 °C junction temperature capability, and automotive load dump protection.
For engineers reviewing the SM6S30AHM3/I datasheet, SM6S30AHM3/I pinout, SM6S30AHM3/I application, or SM6S30AHM3/I equivalent, this page provides verified electrical parameters, thermal performance data, mechanical package details, and validated alternative parts for automotive-grade circuit protection design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low leakage (<10 μA at VWM), low forward voltage drop (≤1.9 V at 100 A), and high surge robustness. Its unidirectional polarity and heatsink-anode configuration enable direct integration into high-current DC power rails.
Designed for ISO7637-2 compliance under load dump conditions, it sustains 600 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits 0.090 %/°C VBR temperature coefficient - enabling predictable clamping behavior across -55 °C to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse working voltage before clamping activation; defines safe operating margin in 24 V automotive systems. |
| VBR (nom) | 35.1 V - Breakdown voltage at 5 mA test current; ensures reliable turn-on during transients exceeding system nominal voltage. |
| VC @ IPPM | 48.4 V - Clamping voltage at 95 A peak pulse current (10/1000 μs); limits downstream IC stress during load dump events. |
| PPPM (10/1000 μs) | 4600 W - Peak pulse power handling capacity; supports high-energy surges per ISO7637-2 Pulse 5a without failure. |
| TJ max | +175 °C - Maximum junction temperature rating; enables placement near hot engine control units without derating. |
| RθJM | 0.45 °C/W - Junction-to-mount thermal resistance; confirms efficient heat transfer to PCB copper pour or heatsink. |
| AEC-Q101 | Qualified - Validated for automotive reliability including HTOL, TC, HTRB, and ESD; required for powertrain and body electronics. |
Pinout & Package
Package: DO-218AB - Surface-mount molded case with metal heatsink tab (anode), matte tin-plated leads, UL 94 V-0 flammability rating, MSL Level 1 (245 °C reflow peak), and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected line (e.g., battery rail); 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 for thermal management and low-inductance grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process reduces leakage drift and improves long-term stability under thermal cycling. |
| 175 °C operation | Enables placement in under-hood ECUs without thermal derating; eliminates need for external heatsinks in most 24 V applications. |
| Low VF (≤1.9 V @ 100 A) | Minimizes conduction loss during forward surge events, reducing I²R heating and improving survivability of repetitive transients. |
| ISO7637-2 compliant | Validated for Load Dump (Pulse 5a) and other automotive surge waveforms; simplifies system-level EMC validation. |
| DO-218AB mechanical robustness | High-power package with integrated metal heatsink delivers 3× higher thermal mass vs. SMA/SMB, supporting >10⁵ surge cycles. |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protecting 24 V battery-fed circuits during alternator load dump events (ISO7637-2 Pulse 5a). IC Role / Device Role: Primary clamping element placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤48.4 V at 95 A, preventing damage to downstream 40 V-rated regulators and microcontrollers. |
Use Scenario: Safeguarding power supply inputs of engine management modules exposed to cranking and switching noise. IC Role / Device Role: Unidirectional TVS connected anode-to-ground, cathode-to-rail, absorbing negative-going spikes and positive surges. Use Value: Maintains <10 μA leakage at 30 V, ensuring minimal quiescent current draw critical for always-on vehicle subsystems. |
| Body Control Module (BCM) Power Rail | ADAS Camera Power Interface |
Use Scenario: Securing 12 V/24 V supply lines feeding lighting, door lock, and HVAC controllers. IC Role / Device Role: High-energy TVS mounted directly at connector entry point to shunt induced transients before entering PCB. Use Value: Withstands 600 A 8.3 ms forward surge, surviving repeated jump-start and battery-reversal fault conditions. |
Use Scenario: Protecting 12 V camera power inputs in rear-view and surround-view systems subject to cable-induced surges. IC Role / Device Role: Low-capacitance unidirectional suppressor minimizing signal distortion on power lines adjacent to high-speed video traces. Use Value: Achieves 0.45 °C/W junction-to-mount thermal resistance, enabling stable operation even when mounted near image sensor ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S30AHM3 | No /I suffix - lacks industrial-grade marking and tape/reel packaging per I-code; same electrical specs and AEC-Q101 qualification. | Not suitable for traceable production lots requiring full RoHS + AEC-Q101 documentation and reel orientation (anode toward sprocket hole). | Select SM6S30AHM3/I when full automotive traceability, delivery mode compliance, and guaranteed anode-first tape orientation are required. |
| SM6S33AHM3/I | Higher VWM (33 V) and VBR (38.7 V nom); identical package, thermal specs, and surge ratings. | Better suited for 24 V systems with wider voltage tolerance (e.g., commercial trucking), but may not clamp early enough in tight-margin 24 V designs. | Choose SM6S33AHM3/I only if system nominal voltage exceeds 27 V or if higher clamping margin is acceptable to reduce false triggering. |
Compared with SM6S30AHM3/I, SM6S30AHM3 lacks traceable packaging and reel orientation control, while SM6S33AHM3/I shifts clamping threshold upward - making SM6S30AHM3/I the optimal choice for standard 24 V automotive load dump protection where precise 30 V standoff and 48.4 V clamping are design-critical.
Availability
SM6S30AHM3/I is available at Aetrix Electronics and suitable for automotive power protection, engine control unit (ECU) design, and body electronics requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SM6S30AHM3/I 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 SM6SxxA family was engineered specifically for automotive load dump and ISO7637-2 surge immunity, combining high-temperature silicon design with DO-218AB mechanical robustness to replace older SMA/SMB TVS solutions in next-generation ECUs.
FAQ
What is the clamping voltage of SM6S30AHM3/I at its rated peak pulse current?
The SM6S30AHM3/I has a maximum clamping voltage (VC) of 48.4 V at 95 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions and ensures downstream components see no more than 48.4 V during worst-case transients. The SM6S30AHM3/I maintains this clamping performance across its full operating temperature range due to its 0.090 %/°C VBR temperature coefficient.
Is SM6S30AHM3/I qualified for automotive use?
Yes, SM6S30AHM3/I is AEC-Q101 qualified and explicitly designed for automotive applications including engine control units, body control modules, and ADAS power interfaces. It meets ISO7637-2 load dump requirements and is rated for operation from -55 °C to +175 °C. The "H" in the part number denotes AEC-Q101 qualification, and the "/I" suffix confirms industrial-grade tape-and-reel packaging with anode-first orientation.
What does the "/I" suffix mean in SM6S30AHM3/I?
The "/I" suffix in SM6S30AHM3/I indicates industrial-grade packaging: 750-unit 13-inch plastic tape-and-reel delivery with anode lead oriented toward the sprocket hole. It also signifies full traceability documentation, RoHS compliance, and adherence to J-STD-020 MSL Level 1 reflow profile (245 °C peak). This distinguishes it from the base SM6S30AHM3, which lacks these production-ready logistics features.
Can SM6S30AHM3/I replace older SMA-packaged TVS diodes?
SM6S30AHM3/I is not a direct pin-compatible replacement for SMA-packaged TVS diodes due to its larger DO-218AB footprint and heatsink-anode terminal layout. However, it offers superior thermal performance (RθJM = 0.45 °C/W vs. ~10 °C/W for SMA), higher surge rating (4600 W vs. typically ≤1500 W), and AEC-Q101 qualification - justifying PCB redesign for new automotive platforms requiring enhanced reliability.
What is the maximum reverse leakage current of SM6S30AHM3/I at 30 V and 175 °C?
At 30 V stand-off voltage and 175 °C junction temperature, the SM6S30AHM3/I exhibits a maximum reverse leakage current (ID) of 10 μA. This value is specified in the Vishay datasheet and reflects stable passivation integrity under extreme thermal stress - critical for low-power always-on automotive circuits where excessive leakage could drain battery reserves.
SM6S30AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AC
SM6S30AHM3/I FAQ
1.How can I place an order for SM6S30AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S30AHM3/I 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 SM6S30AHM3/I reliable?
The price and inventory of SM6S30AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S30AHM3/I is usually 5 days.
3.What payment methods are accepted for SM6S30AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S30AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S30AHM3/I?
SM6S30AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S30AHM3/I 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 SM6S30AHM3/I?
For technical support, including SM6S30AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S30AHM3/I requirements.
6.How does Aetrix verify that SM6S30AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM6S30AHM3/I 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 SM6S30AHM3/I meets industry standards.
7.What is the process for return or replacement of SM6S30AHM3/I?
All SM6S30AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6S30AHM3/I, 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 SM6S30AHM3/I part is unused and in its original packaging.
Return procedure for SM6S30AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S30AHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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