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Vishay General Semiconductor - Diodes Division SM6T30CAHM3_B/I
- Part No.:
- SM6T30CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30CAHM3_B/I.pdf
- Description:
- 600W,30V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,309
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Product details
Overview
SM6T30CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor in SMB (DO-214AA) package, rated for 30 V breakdown voltage (VBR = 28.5–31.5 V at 1.0 mA), 600 W peak pulse power (10/1000 μs), 41.5 V maximum clamping voltage at 14.5 A, and −65 °C to +150 °C operating junction temperature - deployed for ESD and surge protection on automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the SM6T30CAHM3_B/I datasheet, SM6T30CAHM3_B/I pinout, SM6T30CAHM3_B/I application, or SM6T30CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance, low-inductance SMB package layout compatibility, and verified 10/1000 μs waveform clamping performance under transient stress.
Technical Context
This device operates as a bidirectional TVS diode with symmetrical avalanche breakdown in both polarities, enabling robust protection against voltage reversals and bipolar transients without polarity dependency. Its glass-passivated junction ensures stable leakage (<1.0 μA at 25.6 V) and repeatable clamping behavior across temperature.
Designed for surface-mount automated assembly, it features MSL Level 1 moisture sensitivity, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads - supporting reliable operation in high-density PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines precise avalanche onset threshold for bidirectional clamping |
| VWM | 25.6 V - maximum continuous reverse stand-off voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 41.5 V at 14.5 A (10/1000 μs) - clamping voltage limiting downstream IC stress during surge events |
| PPPM | 600 W - peak transient power handling capacity per industry-standard waveform |
| TJ range | −65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - standardized 2-pin SMT footprint with 0.220" body length and 0.096" width |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetric and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | One terminal of symmetrical PN junction; accepts surge current regardless of voltage polarity |
| Cathode | Transient current exit (either polarity) | Second terminal of symmetrical PN junction; completes low-impedance path during avalanche conduction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and leakage specs in both directions - eliminates need for polarity-aware placement |
| Halogen-free & RoHS | HM3 suffix confirms halogen-free molding compound and full RoHS compliance - meets automotive environmental mandates |
| Low-inductance SMB package | DO-214AA geometry minimizes parasitic inductance - preserves fast response (<1 ns) to ESD and fast-rising transients |
| AEC-Q101 qualification | Validated per stress test requirements for automotive electronics - supports use in ADAS sensor modules and body control units |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - compatible with standard SMT reflow without dry-pack or baking |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Clamps 41.5 V at 14.5 A while maintaining <1.0 μA leakage at 25.6 V - prevents false triggering and preserves signal integrity over lifetime. | Use Scenario: Safeguarding PLC analog input channels and digital GPIOs against field-induced surges in factory automation equipment. IC Role / Device Role / Timing Role: Primary transient suppression element mounted adjacent to terminal block or connector to absorb 600 W pulses per IEC 61000-4-5. Use Value: Delivers consistent clamping performance across −65 °C to +150 °C - ensures reliability in uncontrolled ambient conditions. |
| Consumer Power Adapter Input | Telecom Line Interface |
Use Scenario: Secondary-side surge protection on DC output rails of wall adapters and USB PD chargers exposed to system-level coupling. IC Role / Device Role / Timing Role: Fast-response clamp limiting voltage overshoot during hot-plug or cable discharge events. Use Value: Low 100 °C/W RθJA enables self-heating control on compact PCBs - avoids thermal runaway during repetitive transients. | Use Scenario: Overvoltage protection on Ethernet PHY interface lines and RS-485 data buses in network infrastructure gear. IC Role / Device Role / Timing Role: Symmetrical suppression element guarding differential pairs against common-mode surges and lightning-induced spikes. Use Value: Matches impedance symmetry of twisted-pair routing - maintains signal integrity without skew or reflection penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Lower PPPM (400 W), same VBR range and SMB package - reduced surge margin | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when cost sensitivity outweighs automotive qualification and 600 W headroom |
| SMCJ30CA | Higher PPPM (1500 W), larger SMC (DO-214AB) package - 30% larger footprint | Same AEC-Q101 qualification; suitable where higher energy absorption is required | Choose when system-level surge tests exceed 600 W or require extended lifetime under repeated stress |
Compared with SMAJ30CA and SMCJ30CA, SM6T30CAHM3_B/I delivers optimal balance of automotive qualification, 600 W capability, and minimal SMB footprint - making it preferred for space-constrained, AEC-Q101–mandated designs where 400 W is insufficient but 1500 W is over-specified.
Availability
SM6T30CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial programmable logic controllers, and telecom line interface circuits requiring stable component supply with guaranteed long-term sourcing.
Supply support for SM6T30CAHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SM6T Series is engineered for high-reliability transient suppression in automotive, industrial, and communications systems - combining AEC-Q101 qualification, halogen-free construction, and precise clamping performance in compact SMB packages.
FAQ
What is the breakdown voltage tolerance for SM6T30CAHM3_B/I?
The SM6T30CAHM3_B/I has a specified breakdown voltage (VBR) range of 28.5 V to 31.5 V at 1.0 mA test current, representing ±5% tolerance around the nominal 30 V rating. This tight tolerance ensures predictable clamping onset across production lots and supports accurate system-level surge margin analysis without derating overhead.
Is SM6T30CAHM3_B/I suitable for automotive applications?
Yes, SM6T30CAHM3_B/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly designed for use in automotive subsystems such as body electronics, ADAS sensors, and infotainment interfaces where reliability under thermal cycling and transient stress is mandatory.
What does the "CA" suffix indicate in SM6T30CAHM3_B/I?
The "CA" suffix in SM6T30CAHM3_B/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both voltage polarities. Unlike unidirectional variants (e.g., SM6T30A), this part has no cathode band marking and identical electrical characteristics forward and reverse.
What is the maximum clamping voltage of SM6T30CAHM3_B/I under surge conditions?
The SM6T30CAHM3_B/I exhibits a maximum clamping voltage (VC) of 41.5 V when subjected to a 10/1000 μs waveform peak pulse current of 14.5 A. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Does SM6T30CAHM3_B/I require special PCB layout considerations?
Yes, SM6T30CAHM3_B/I should be mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and thermal performance. Short, direct traces to protected nodes are essential to minimize inductive voltage overshoot - avoid vias or long routing between the SM6T30CAHM3_B/I and the IC being protected.
SM6T30CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
SM6T30CAHM3_B/I FAQ
1.How can I place an order for SM6T30CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30CAHM3_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 SM6T30CAHM3_B/I reliable?
The price and inventory of SM6T30CAHM3_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 SM6T30CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T30CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30CAHM3_B/I?
SM6T30CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30CAHM3_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 SM6T30CAHM3_B/I?
For technical support, including SM6T30CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30CAHM3_B/I requirements.
6.How does Aetrix verify that SM6T30CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T30CAHM3_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 SM6T30CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T30CAHM3_B/I?
All SM6T30CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30CAHM3_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 SM6T30CAHM3_B/I part is unused and in its original packaging.
Return procedure for SM6T30CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30CAHM3_B/I Tags
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Diodes Incorporated
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