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Vishay General Semiconductor - Diodes Division SM6T30AHM3_B/I
- Part No.:
- SM6T30AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30AHM3_B/I.pdf
- Description:
- 600W,30V,5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,039
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Product details
Overview
SM6T30AHM3_B/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 30 V breakdown voltage (VBR = 28.5–31.5 V at 1.0 mA), 41.5 V maximum clamping voltage (VC) at 14.5 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines and MOSFET gate drivers.
For engineers reviewing the SM6T30AHM3_B/I datasheet, SM6T30AHM3_B/I pinout, SM6T30AHM3_B/I application, or SM6T30AHM3_B/I equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS compliance, 150 °C max junction temperature, low-inductance SMB package, and verified clamping performance under IEC 61000-4-2/4-5 stress conditions.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction to achieve fast response (<1 ns) and stable breakdown characteristics. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W support reliable operation on standard 0.2" × 0.2" copper pads without forced cooling.
The SM6T30AHM3_B/I is designed for single-pulse transient suppression per IEC 61000-4-5 (10/1000 μs) and IEC 61000-4-2 (ESD), delivering consistent clamping up to 14.5 A IPPM while maintaining reverse leakage ≤1.0 μA at 25.6 V stand-off voltage (VWM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines precise breakdown threshold for accurate overvoltage triggering |
| VWM | 25.6 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 41.5 V at 14.5 A (10/1000 μs) - clamping voltage limiting protected circuit stress during surge events |
| PPPM | 600 W - peak pulse power handling capacity under standardized lightning/surge waveforms |
| TJ max | +150 °C - enables use in under-hood automotive environments and industrial enclosures |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated placement and J-STD-020 MSL level 1 reflow |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, 0.220" × 0.130" body, cathode band marking on one end. Complies with UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; forms clamping loop with cathode |
| Cathode (banded end) | High-side transient input terminal | Accepts positive transients; clamps voltage to VC when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) in compact SMB form factor |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and low parameter drift over 1000-hour HTOL life test |
| Halogen-free & RoHS-compliant (HM3 suffix) | Fulfills automotive OEM material declarations (IMDS, ELV) and IPC-1752A reporting requirements |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free soldering without popcorn cracking or delamination risk |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage margin required for downstream ICs like CAN transceivers or ADC front-ends |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤41.5 V during 14.5 A surges, preserving 12-bit ADC accuracy and preventing latch-up in 3.3 V or 5 V signal chains. | Use Scenario: Safeguarding high-side gate drivers in 24 V DC motor controllers subject to inductive kickback from brushed motors. IC Role / Device Role / Timing Role: TVS connected from gate-to-source of N-channel MOSFET to absorb turn-off spikes. Use Value: Clamps gate voltage to safe levels below 20 V, avoiding gate oxide rupture and ensuring reliable MOSFET switching over 100,000-cycle lifetime. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Suppression |
Use Scenario: Shielding RS-485 transceiver I/O pins in outdoor base station equipment against lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional part applied on DC-biased data lines with defined polarity. Use Value: Delivers 600 W surge handling with <1 ns response, meeting Telcordia GR-1089-CORE Zone 3 requirements without adding series impedance. | Use Scenario: ESD protection on 5 V USB power input of smart home hubs, subjected to ±8 kV contact discharge per IEC 61000-4-2. IC Role / Device Role / Timing Role: TVS placed between VBUS and GND, upstream of USB port EMI filter. Use Value: Maintains <1.0 μA leakage at 25.6 V, preventing standby current drain while clamping ESD events to <41.5 V within 1 ns. |
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-E3/5B | Same VBR range (28.5–31.5 V), but lower PPPM = 400 W and higher VC = 48.4 V at 8.3 A | Not AEC-Q101 qualified; limited to commercial-grade industrial use | Select when cost sensitivity outweighs automotive qualification and surge margin requirements |
| 1.5SMC30A | Same SMB package, but higher VC = 49.9 V at 12.0 A and no AEC-Q101 option available | Lacks halogen-free certification and MSL level 1 reflow compatibility | Choose only for legacy designs where HM3 suffix compliance is not mandated |
Compared with SMAJ30A-E3/5B and 1.5SMC30A, SM6T30AHM3_B/I delivers superior surge robustness (600 W vs. 400 W/400 W), tighter clamping (41.5 V vs. 48.4 V/49.9 V), and full automotive qualification-making it the preferred choice for safety-critical signal line protection where layout space and thermal constraints permit SMB mounting.
Availability
SM6T30AHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive gate circuits, and telecom line interface protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SM6T30AHM3_B/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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM6T Series was developed specifically for high-reliability transient suppression in automotive, industrial, and telecom systems-featuring AEC-Q101 qualification, halogen-free construction, and optimized clamping performance in the SMB footprint.
FAQ
What is the exact breakdown voltage range specified for SM6T30AHM3_B/I?
The SM6T30AHM3_B/I has a guaranteed breakdown voltage (VBR) range of 28.5 V to 31.5 V at a test current of 1.0 mA, as confirmed in the Vishay SM6T datasheet revision 09-Jan-2024, page 2. This tolerance ensures precise overvoltage triggering for circuits operating near 30 V nominal rails. The SM6T30AHM3_B/I maintains this specification across its full operating temperature range.
Is SM6T30AHM3_B/I qualified for automotive applications?
Yes, SM6T30AHM3_B/I is AEC-Q101 qualified, as indicated by the "HM3" suffix and explicitly stated in the Vishay SM6T datasheet section "MECHANICAL DATA". It meets all stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev D. The SM6T30AHM3_B/I is approved for under-hood and chassis-mounted automotive modules.
What does the "_B/I" suffix mean in SM6T30AHM3_B/I?
The "_B/I" suffix in SM6T30AHM3_B/I denotes packaging configuration: "B" indicates the revision code (document revision B), and "I" specifies 13-inch diameter plastic tape-and-reel delivery with 3200 units per reel. This matches Vishay's ordering information table on page 2 of document 88385. The SM6T30AHM3_B/I is fully compatible with standard SMT pick-and-place equipment.
What is the maximum clamping voltage of SM6T30AHM3_B/I under surge conditions?
The SM6T30AHM3_B/I has a maximum clamping voltage (VC) of 41.5 V at 14.5 A peak pulse current using the 10/1000 μs waveform, per the Electrical Characteristics table on page 2 of the Vishay SM6T datasheet. This value is measured with the device mounted on 0.2" × 0.2" copper pads and represents worst-case clamping during standardized surge events. The SM6T30AHM3_B/I achieves this with minimal voltage overshoot due to low junction inductance.
Does SM6T30AHM3_B/I have halogen-free and RoHS-compliant construction?
Yes, SM6T30AHM3_B/I uses halogen-free molding compound and matte tin-plated leads, satisfying both RoHS Directive 2011/65/EU and JEDEC JS709C halogen-free requirements. This is confirmed by the "HM3" suffix definition in the "MECHANICAL DATA" section and Vishay's material categorization documentation (www.vishay.com/doc?99912). The SM6T30AHM3_B/I carries full IMDS and IPC-1752A compliance documentation.
SM6T30AHM3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.5V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T30AHM3_B/I FAQ
1.How can I place an order for SM6T30AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30AHM3_B/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 SM6T30AHM3_B/I reliable?
The price and inventory of SM6T30AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T30AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T30AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30AHM3_B/I?
SM6T30AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30AHM3_B/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 SM6T30AHM3_B/I?
For technical support, including SM6T30AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30AHM3_B/I requirements.
6.How does Aetrix verify that SM6T30AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T30AHM3_B/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 SM6T30AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T30AHM3_B/I?
All SM6T30AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30AHM3_B/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 SM6T30AHM3_B/I part is unused and in its original packaging.
Return procedure for SM6T30AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30AHM3_B/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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