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Vishay General Semiconductor - Diodes Division SM6T27AHE3/52
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- Part No.:
- SM6T27AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T27AHE3/52.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,070
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Product details
Overview
SM6T27AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V stand-off voltage (VWM), 37.5 V maximum clamping voltage (VC) at 16 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SM6T27AHE3/52 datasheet, SM6T27AHE3/52 pinout, SM6T27AHE3/52 application, or SM6T27AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low-inductance SMB package, and compliance with IEC 61000-4-2/4-5 ESD/surge immunity requirements.
Technical Context
The SM6T27AHE3/52 operates as a silicon avalanche diode with glass-passivated junction, delivering fast response (<1 ns) to transient overvoltages. Its clamping action begins above 23.1 V reverse stand-off and fully engages at 37.5 V under 16 A 10/1000 μs surge, limiting energy dissipation to safe levels for downstream components.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (260 °C reflow peak), JEDEC whisker Class 2, and UL 94 V-0 flammability. The cathode band denotes polarity, and its thermal resistance (RθJA = 100 °C/W) assumes 0.2" × 0.2" copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA - defines precise avalanche initiation threshold for reliable overvoltage detection |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 37.5 V at 16.0 A (10/1000 μs) - clamping voltage that determines protected circuit's maximum stress during surge |
| PPPM | 600 W - peak pulse power handling capacity under standardized lightning/surge waveform |
| TJ max | +150 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| RθJA | 100 °C/W - thermal resistance defining junction-to-ambient temperature rise under 5.0 W steady-state dissipation |
Pinout & Package
SMB (DO-214AA) surface-mount package with matte tin-plated leads, 0.220" × 0.130" footprint, and cathode band marking on one end. Compliant with J-STD-002 solderability and JESD 22-B102 solder joint reliability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 24 V supply or CAN_H); band-marked end indicates cathode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV surge) on 24 V systems without degradation |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage overshoot during transient events, reducing risk of latch-up in protected ICs |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking, supporting high-throughput manufacturing |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 μA at VWM) across -65 °C to +150 °C operating range |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in body control modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC/DC input, absorbing >95 % of surge energy before reaching regulator. Use Value: Prevents regulator latch-up and field returns by limiting transient voltage to ≤37.5 V during 100 A/100 ms load dump events. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA loops) of pressure sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground, responding within <1 ns to sub-100 ns ESD transients. Use Value: Maintains signal integrity with <1 μA leakage at 23.1 V, avoiding offset errors in precision current-loop circuits. |
| Telecom Line Surge Suppression | Consumer Device USB Port Protection |
Use Scenario: Safeguarding RS-485 transceivers in building automation gateways exposed to induced surges on long cable runs. IC Role / Device Role / Timing Role: Standoff-rated TVS on differential bus lines, clamping common-mode transients while preserving data integrity. Use Value: Enables compliance with IEC 61000-4-5 (2 kV line-earth) without adding series impedance or distorting signal edges. |
Use Scenario: Adding secondary-level surge protection on VBUS line of USB-C ports in portable monitors and docking stations. IC Role / Device Role / Timing Role: Secondary TVS after primary polymer PTC, activated only during extreme 8/20 μs surges exceeding 30 V. Use Value: Extends system lifetime by preventing cumulative degradation of USB controller ESD structures during repeated hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Lower VBR (24.0–26.5 V), same SMB package, 400 W PPPM, non-AEC-Q101 | Limited to commercial-grade industrial use; insufficient for automotive load dump compliance | Select when cost-sensitive non-automotive designs require basic 24 V rail clamping without qualification overhead |
| 1.5SMC27A | Same VBR range, higher PPPM (1500 W), larger SMC (DO-214AB) package, AEC-Q101 available in HE3 variant | Requires PCB layout change due to 2.5 mm wider body; better for high-energy surges but less space-efficient | Choose when system-level surge tests exceed 600 W capability and board area allows SMC footprint |
Compared with SMAJ24A and 1.5SMC27A, the SM6T27AHE3/52 uniquely balances AEC-Q101 qualification, SMB space efficiency, and 600 W surge capacity - making it optimal for compact automotive ECUs where qualification, size, and standardized surge margin are jointly constrained.
Availability
SM6T27AHE3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom infrastructure, and consumer USB power protection requiring stable component supply and full traceability.
Supply support for SM6T27AHE3/52 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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive-grade validation.
The SM6T Series was developed specifically for robust transient suppression in harsh environments - targeting AEC-Q101-compliant automotive subsystems and industrial equipment requiring repeatable clamping performance under thermal and electrical stress.
FAQ
What is the exact breakdown voltage range for SM6T27AHE3/52?
The SM6T27AHE3/52 has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1.0 mA test current, measured per JESD201 and verified per Vishay Document Number 88385. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage margin design in 24 V systems.
Is SM6T27AHE3/52 qualified for automotive applications?
Yes, SM6T27AHE3/52 is AEC-Q101 qualified - confirmed by Vishay's automotive ordering code suffix "HE3" and documented in Revision 09-Jan-2024 of datasheet 88385. It undergoes stress testing including HTGB, H3TRB, and temperature cycling to ensure reliability in under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of SM6T27AHE3/52 under surge conditions?
The SM6T27AHE3/52 clamps to a maximum of 37.5 V at 16.0 A peak pulse current using the industry-standard 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay's SM6T datasheet and defines the upper voltage limit imposed on protected circuitry during surge events.
Does SM6T27AHE3/52 have bidirectional capability?
No, SM6T27AHE3/52 is strictly unidirectional. Its cathode band marking and electrical specifications (e.g., VBR, VWM, IFSM) apply only in reverse-bias mode. For bidirectional operation, Vishay specifies part numbers ending in "CA", such as SM6T27CAHE3/52 - which is a separate device with symmetrical breakdown in both directions.
What package type and dimensions does SM6T27AHE3/52 use?
SM6T27AHE3/52 uses the SMB (DO-214AA) surface-mount package with overall dimensions of 4.57 mm × 3.94 mm × 2.20 mm (length × width × height). The package features matte tin-plated leads, complies with UL 94 V-0, and is optimized for automated pick-and-place and reflow soldering per J-STD-020 MSL Level 1.
SM6T27AHE3/52 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 16A
- 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)
SM6T27AHE3/52 FAQ
1.How can I place an order for SM6T27AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T27AHE3/52 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 SM6T27AHE3/52 reliable?
The price and inventory of SM6T27AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T27AHE3/52 is usually 5 days.
3.What payment methods are accepted for SM6T27AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T27AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T27AHE3/52?
SM6T27AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T27AHE3/52 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 SM6T27AHE3/52?
For technical support, including SM6T27AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T27AHE3/52 requirements.
6.How does Aetrix verify that SM6T27AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T27AHE3/52 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 SM6T27AHE3/52 meets industry standards.
7.What is the process for return or replacement of SM6T27AHE3/52?
All SM6T27AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T27AHE3/52, 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 SM6T27AHE3/52 part is unused and in its original packaging.
Return procedure for SM6T27AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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