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Vishay General Semiconductor - Diodes Division SM6T30A-E3/52
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- Part No.:
- SM6T30A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30A-E3/52.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,995
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Product details
Overview
SM6T30A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 30 V breakdown voltage (VBR = 28.5–31.5 V at 1.0 mA), 25.6 V stand-off voltage (VWM), 41.5 V clamping voltage (VC) at 14.5 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It protects MOSFETs and signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SM6T30A-E3/52 datasheet, SM6T30A-E3/52 pinout, SM6T30A-E3/52 application, or SM6T30A-E3/52 equivalent, key selection criteria include unidirectional polarity, SMB package thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification eligibility (via HE3 suffix), clamping performance under 10/1000 μs surge, and RoHS-compliant matte tin plating.
Technical Context
The SM6T30A-E3/52 operates as a unidirectional avalanche diode with glass-passivated junction, designed for transient suppression on DC power rails and low-voltage signal paths. Its clamping action begins above 25.6 V and limits voltage to ≤41.5 V during 14.5 A 10/1000 μs pulses, enabling robust protection of downstream ICs without crowbar behavior.
It features low inductance and meets MSL Level 1 per J-STD-020 (260 °C peak reflow), supporting automated SMT placement. The cathode band denotes polarity, and its SMB package provides 5.0 mm × 5.0 mm copper pad thermal dissipation capability per Vishay's recommended layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines precise avalanche initiation threshold for reliable 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 stress on protected circuitry |
| PPPM | 600 W - peak transient energy absorption capacity under standardized surge waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for derating above 25 °C |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side of protected line; enables conduction only when cathode is >25.6 V above anode |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to higher-potential side (e.g., VCC rail); defines unidirectional clamping direction toward ground |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables suppression of high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| MSL Level 1 rating | Permits standard SMT reflow without baking or special handling (260 °C peak) |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time) |
| AEC-Q101 qualification path | Supports automotive-grade sourcing via HE3/HM3 variants with full stress test compliance |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus interface ICs and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive kickback in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp transients before they reach the input ESD structure of the transceiver. Use Value: Limits voltage to ≤41.5 V during 14.5 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation cabinets. IC Role / Device Role / Timing Role: Mounted across 24 V DC input terminals to absorb repetitive 600 W surges from inductive loads switching at <1 Hz. Use Value: Maintains system uptime by preventing false triggering or permanent damage to optocoupler input stages. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side transient suppression on 12 V/19 V DC output rails of AC-DC adapters used in laptops and monitors. IC Role / Device Role / Timing Role: Placed after DC-DC converter output to protect downstream regulators and USB PD controllers from output capacitor discharge spikes. Use Value: Clamps 10/1000 μs surges to 41.5 V while dissipating 600 W, avoiding overvoltage shutdown of sensitive PMICs. | Use Scenario: Front-end protection on Ethernet PHY power pins and auxiliary bias rails in telecom access equipment operating in lightning-prone environments. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to local ground plane on isolated 3.3 V or 5 V supply domains feeding PHY ICs. Use Value: Withstands repeated 10/1000 μs surges up to 14.5 A without parameter shift, ensuring multi-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same SMB package, 30 V VBR, but lower PPPM = 400 W and higher VC = 48.4 V at 8.3 A | Less robust for automotive load-dump events requiring ≥600 W rating | Select SM6T30A-E3/52 when 600 W pulse handling and tighter clamping (41.5 V vs. 48.4 V) are required |
| 1.5SMC30A | Larger SMC (DO-214AB) package, same 30 V VBR, PPPM = 1500 W, VC = 48.4 V at 31.0 A | Higher power handling but incompatible footprint; requires PCB redesign | Choose SM6T30A-E3/52 for space-constrained SMB layouts where 600 W suffices and footprint must be preserved |
Compared with SMAJ30A and 1.5SMC30A, SM6T30A-E3/52 delivers optimal balance of 600 W surge capability, 41.5 V clamping, and SMB footprint-making it preferred for automotive and industrial SMT designs where board area and precise clamping voltage are critical.
Availability
SM6T30A-E3/52 is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, consumer power adapter outputs, and telecom line card power rails requiring stable component supply with RoHS compliance and SMT process compatibility.
Supply support for SM6T30A-E3/52 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, power efficiency, and automotive-grade qualification.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 readiness are mandatory.
FAQ
What is the breakdown voltage range of the SM6T30A-E3/52?
The SM6T30A-E3/52 has a guaranteed breakdown voltage (VBR) range of 28.5 V to 31.5 V at a test current of 1.0 mA, measured per JEDEC standards. This tight 10% tolerance ensures predictable turn-on behavior in overvoltage protection circuits. The value is confirmed in Vishay's official datasheet revision 09-Jan-2024 (Document Number: 88385), and applies specifically to the SM6T30A-E3/52 variant.
Is the SM6T30A-E3/52 RoHS-compliant and lead-free?
Yes, the SM6T30A-E3/52 is RoHS-compliant and lead-free, as indicated by the "E3" suffix per Vishay's ordering nomenclature. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements, and the molding compound complies with UL 94 V-0 flammability rating. This compliance is documented in the official SM6T Series datasheet (88385).
Does the SM6T30A-E3/52 have AEC-Q101 qualification?
The base SM6T30A-E3/52 is commercial-grade and not AEC-Q101 qualified; however, Vishay offers AEC-Q101-qualified versions under the HE3 and HM3 suffixes (e.g., SM6T30AHE3_B). These variants undergo full stress testing per AEC-Q101 and are designated for automotive applications. The SM6T30A-E3/52 itself is suitable for industrial and consumer use where automotive qualification is not mandated.
What is the clamping voltage of the SM6T30A-E3/52 under a 10/1000 μs surge?
The SM6T30A-E3/52 clamps to a maximum of 41.5 V when subjected to a 10/1000 μs surge waveform at its rated peak pulse current of 14.5 A. This value is specified in the Electrical Characteristics table of the official datasheet and reflects worst-case performance at TA = 25 °C with proper PCB pad layout (0.2" × 0.2" copper).
Can the SM6T30A-E3/52 be used in bidirectional configurations?
No, the SM6T30A-E3/52 is strictly unidirectional, as confirmed by its part number suffix "A" and cathode band marking. For bidirectional operation, Vishay specifies the "CA" suffix (e.g., SM6T30CA). Using SM6T30A-E3/52 in reverse-biased AC applications would result in unintended conduction and potential failure; always verify polarity alignment in schematic and layout for SM6T30A-E3/52.
SM6T30A-E3/52 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T30A-E3/52 FAQ
1.How can I place an order for SM6T30A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30A-E3/52 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 SM6T30A-E3/52 reliable?
The price and inventory of SM6T30A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T30A-E3/52 is usually 5 days.
3.What payment methods are accepted for SM6T30A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30A-E3/52?
SM6T30A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30A-E3/52 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 SM6T30A-E3/52?
For technical support, including SM6T30A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30A-E3/52 requirements.
6.How does Aetrix verify that SM6T30A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T30A-E3/52 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 SM6T30A-E3/52 meets industry standards.
7.What is the process for return or replacement of SM6T30A-E3/52?
All SM6T30A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30A-E3/52, 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 SM6T30A-E3/52 part is unused and in its original packaging.
Return procedure for SM6T30A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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