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Vishay General Semiconductor - Diodes Division SM6T30AHE3/5B
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- Part No.:
- SM6T30AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30AHE3/5B.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,284
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Product details
Overview
SM6T30AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMB (DO-214AA) package, featuring 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 capability with 10/1000 μs waveform. It protects MOSFETs and sensor signal lines in automotive ECUs against inductive switching transients.
For engineers reviewing the SM6T30AHE3/5B datasheet, SM6T30AHE3/5B pinout, SM6T30AHE3/5B application, or SM6T30AHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 25.6 V stand-off voltage (VWM), 1.0 μA max reverse leakage at VWM, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The SM6T30AHE3/5B employs a glass-passivated silicon junction optimized for fast response to transient overvoltages, with low dynamic impedance enabling tight clamping during 10/1000 μs surges. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ = 150 °C) support operation in under-hood automotive environments.
Designed as a unidirectional device, it conducts only in reverse bias above VBR, with cathode band marking for orientation. It meets J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance, and its matte tin-plated leads ensure solderability per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines reliable turn-on threshold for transient suppression |
| 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 stress on downstream ICs |
| PPPM | 600 W - peak surge power handling capacity under standardized transient waveform |
| IFSM | 100 A - non-repetitive forward surge rating for unidirectional devices during fault conditions |
| TJ range | −65 °C to +150 °C - enables deployment in extended-temperature automotive and industrial locations |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads; cathode indicated by band marking; terminals designed for reflow soldering on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side reference in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., sensor supply or signal trace); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| Low inductance layout | Minimizes voltage overshoot during fast transients (<1 ns rise time) in PCB-level protection |
| MSL Level 1 compliance | Enables use without baking prior to reflow assembly; peak reflow temperature up to 260 °C |
| 600 W 10/1000 μs rating | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surge events |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protects 12 V supply rail and CAN/LIN signal lines from load dump and inductive kickback during solenoid de-energization. IC Role / Device Role / Timing Role: Unidirectional TVS placed between protected line and chassis ground to clamp transients before reaching MCU I/O or transceiver inputs. Use Value: Limits clamped voltage to ≤41.5 V, ensuring safe operation of 3.3 V/5 V logic interfaces and preventing latch-up in microcontrollers. |
Use Scenario: Shields gate driver inputs and feedback signal paths in variable-frequency drives from switching noise and cross-talk-induced spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 25.6 V) deployed on isolated analog feedback traces to suppress <100 ns transients without affecting DC accuracy. Use Value: 1.0 μA leakage at VWM avoids loading precision current-sense amplifiers; low capacitance preserves signal integrity up to 1 MHz. |
| Consumer Appliance Power Supply | Telecom Base Station Sensor Interface |
Use Scenario: Guards AC-DC converter secondary-side outputs and microcontroller reset lines against ESD and relay bounce in washing machine control boards. IC Role / Device Role / Timing Role: Fast-response TVS installed adjacent to connector entry points to divert sub-μs ESD events before propagation into digital logic. Use Value: 600 W peak power rating absorbs multiple 8 kV contact ESD strikes per IEC 61000-4-2 without degradation; RoHS-compliant matte tin finish ensures solder joint reliability. |
Use Scenario: Safeguards environmental sensor inputs (temperature, humidity) in outdoor telecom cabinets exposed to lightning-induced surges on long interconnect cables. IC Role / Device Role / Timing Role: Primary clamping device on differential sensor lines, coordinated with common-mode chokes to meet IEC 61000-4-5 Level 3 (2 kV/1 kA) requirements. Use Value: 14.5 A IPPM supports coordination with upstream GDTs; SMB footprint allows dense layout in space-constrained RF module enclosures. |
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 | Same VBR range (28.5–31.5 V), but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current load dump | Select SMAJ30A only when board space is critical and surge energy is confirmed ≤400 W |
| SMCJ30A | Higher PPPM = 1500 W; larger SMC (DO-214AB) package; same VBR/VC specs | Overqualified for typical 12 V automotive signal lines; requires larger pad layout and higher thermal mass | Choose SMCJ30A when protecting high-power rails (e.g., battery input) where >600 W margin is required |
Compared with SMAJ30A and SMCJ30A, the SM6T30AHE3/5B delivers optimal balance of 600 W surge capability, AEC-Q101 qualification, and SMB footprint-making it the preferred choice for cost-sensitive, space-constrained automotive and industrial signal-line protection where full SMC-level robustness is unnecessary.
Availability
SM6T30AHE3/5B is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive interfaces, and consumer appliance power supplies requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SM6T30AHE3/5B 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 and application-specific performance.
The SM6T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where AEC-Q101 qualification, precise clamping, and automated manufacturability are essential.
FAQ
What is the meaning of the "HE3" suffix in SM6T30AHE3/5B?
The "HE3" suffix in SM6T30AHE3/5B indicates RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this automotive-grade variant from commercial-only versions (e.g., "E3") and confirms compliance with stress tests including temperature cycling, highly accelerated life testing, and ESD per AEC standards. The SM6T30AHE3/5B meets all requirements defined in the Vishay SM6T family specification document 88385.
Does SM6T30AHE3/5B support bidirectional transient suppression?
No, SM6T30AHE3/5B is strictly unidirectional. Its cathode band marking and electrical specifications-including VBR, VWM, and IFSM-are defined only for reverse-bias operation. For bidirectional protection, Vishay specifies part numbers with "CA" suffix (e.g., SM6T30CA); the SM6T30AHE3/5B does not provide symmetrical clamping in both polarities.
What is the maximum clamping voltage of SM6T30AHE3/5B under standard test conditions?
The maximum clamping voltage (VC) of SM6T30AHE3/5B is 41.5 V when subjected to a 10/1000 μs waveform at IPPM = 14.5 A, as specified in the Vishay SM6T datasheet (document 88385, page 2). This value is measured across the device terminals with 0.2" × 0.2" copper pads and represents worst-case voltage seen by protected circuitry during surge events.
Can SM6T30AHE3/5B be used in place of SM6T30A-E3/5B?
Yes-SM6T30AHE3/5B replaces SM6T30A-E3/5B with added AEC-Q101 qualification while retaining identical electrical parameters, SMB package dimensions, and pinout. The "HE3" version adds automotive reliability validation but maintains full form-fit-function compatibility; no PCB or schematic changes are needed when upgrading from E3 to HE3 for automotive designs.
What is the thermal resistance junction-to-ambient (RθJA) for SM6T30AHE3/5B?
The typical thermal resistance junction-to-ambient (RθJA) for SM6T30AHE3/5B is 100 °C/W, measured under standard JEDEC conditions with 0.2" × 0.2" copper pads per terminal. This value assumes no additional heatsinking and must be derated above TA = 25 °C per Figure 2 in the Vishay SM6T datasheet (88385). The SM6T30AHE3/5B's RθJA directly impacts maximum allowable power dissipation in sustained surge scenarios.
SM6T30AHE3/5B 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T30AHE3/5B FAQ
1.How can I place an order for SM6T30AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30AHE3/5B 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 SM6T30AHE3/5B reliable?
The price and inventory of SM6T30AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T30AHE3/5B is usually 5 days.
3.What payment methods are accepted for SM6T30AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30AHE3/5B?
SM6T30AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30AHE3/5B 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 SM6T30AHE3/5B?
For technical support, including SM6T30AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30AHE3/5B requirements.
6.How does Aetrix verify that SM6T30AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T30AHE3/5B 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 SM6T30AHE3/5B meets industry standards.
7.What is the process for return or replacement of SM6T30AHE3/5B?
All SM6T30AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30AHE3/5B, 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 SM6T30AHE3/5B part is unused and in its original packaging.
Return procedure for SM6T30AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T30AHE3/5B Tags
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