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Vishay General Semiconductor - Diodes Division SM6T27AHM3_A/H
- Part No.:
- SM6T27AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T27AHM3_A/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,415
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Product details
Overview
SM6T27AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in SMB (DO-214AA) package, with 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V stand-off voltage (VWM), 37.5 V max clamping voltage (VC) at 16 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It protects MOSFETs and sensor signal lines in automotive ECUs against inductive switching transients.
For engineers reviewing the SM6T27AHM3_A/H datasheet, SM6T27AHM3_A/H pinout, SM6T27AHM3_A/H application, or SM6T27AHM3_A/H equivalent, key selection criteria include clamping performance under 16 A surge, AEC-Q101 qualification status, halogen-free RoHS compliance, and SMB footprint compatibility with automated SMT assembly.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to achieve low dynamic impedance and fast response (<1 ns) to transient overvoltages. Its design targets single-pulse energy absorption up to 600 W with minimal voltage overshoot during 10/1000 μs surges.
Thermal performance is defined by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), enabling reliable operation up to TJ = 150 °C. The cathode-band marking identifies polarity, and the device meets J-STD-020 MSL Level 1 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at IT = 1 mA - ensures precise turn-on threshold for 27 V nominal systems |
| VWM | 23.1 V - maximum continuous reverse voltage before leakage exceeds 1 μA |
| VC @ IPPM | 37.5 V at 16 A (10/1000 μs) - limits protected circuit voltage during worst-case surge |
| PPPM | 600 W - peak pulse power handling capability defines transient energy robustness |
| IFSM | 100 A (10 ms half-sine) - supports high-energy inrush or fault-current events |
| TJ range | −65 °C to +150 °C - enables deployment in under-hood automotive environments |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 5.59 mm × 3.94 mm footprint |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated, 0.220″ × 0.130″ body size, cathode band marking on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground in unidirectional TVS configuration | Provides low-impedance path to ground during transient clamping; must be routed with minimal inductance |
| Cathode | Current exit terminal in forward bias; marked with band; connects to protected line | Defines polarity-sensitive placement-reversal causes catastrophic failure under normal operating voltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection of 12 V/24 V automotive power nets against ISO 7637-2 Pulse 1, 2a, and 5a transients |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS-compliant | Meets automotive OEM material restrictions and supports lead-free reflow soldering at 260 °C peak |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream ICs while maintaining margin above VWM |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard SMT reflow without baking preconditioning |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects microcontroller GPIOs and LIN bus transceivers from load-dump and inductive kickback in door module actuators. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between protected signal line and chassis ground. Use Value: Limits transient voltage to ≤37.5 V during 16 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. | Use Scenario: Shields 24 V DC digital input channels from relay coil flyback and field wiring ESD events. IC Role / Device Role / Timing Role: Standoff protector mounted directly at connector entry point before optocoupler input stage. Use Value: Maintains 23.1 V DC operating margin while clamping 1 kV ESD (IEC 61000-4-2) to safe levels below optocoupler breakdown. |
| Automotive Sensor Signal Conditioning | Consumer Appliance Motor Drive Interface |
Use Scenario: Safeguards analog outputs of pressure/temperature sensors in engine bay against alternator ripple and ignition noise. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on sensor output trace adjacent to ADC input. Use Value: Delivers <100 pF junction capacitance at zero bias (per typical curve Fig. 4), preserving signal integrity up to 1 MHz bandwidth. | Use Scenario: Guards microcontroller PWM outputs driving small brushed DC motors in smart home appliances. IC Role / Device Role / Timing Role: Transient suppressor on motor driver high-side switch node to absorb back-EMF spikes. Use Value: Withstands 100 A non-repetitive forward surge (IFSM), surviving repeated motor stall conditions without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27A-E3/52 | Same VBR range (25.7–28.4 V), but 400 W PPPM, non-AEC-Q101, commercial-grade only | Lacks automotive qualification and halogen-free certification; suitable for industrial/commercial PCBs only | Select when AEC-Q101 and halogen-free requirements are not mandated |
| SMCJ27A-HM3 | Higher PPPM = 1500 W, same VBR, larger SMC (DO-214AB) package, AEC-Q101 qualified | Requires larger PCB area and higher surge immunity; used where ISO 16750-2 long-duration pulses apply | Select when system-level surge tests exceed 600 W capability or layout allows SMC footprint |
Compared with SMAJ27A-E3/52 and SMCJ27A-HM3, SM6T27AHM3_A/H delivers optimal balance of AEC-Q101 compliance, 600 W surge capacity, and compact SMB footprint-making it ideal for space-constrained automotive modules requiring validated reliability without over-engineering.
Availability
SM6T27AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and consumer appliance motor drive interfaces requiring stable component supply across extended production lifecycles.
Supply support for SM6T27AHM3_A/H 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, and protection devices with emphasis on automotive, industrial, and computing applications.
The SM6T Series is designed specifically for robust, surface-mount transient voltage suppression in harsh environments-targeting AEC-Q101-compliant automotive subsystems and high-reliability industrial controls.
FAQ
What is the clamping voltage of SM6T27AHM3_A/H at its rated peak pulse current?
The SM6T27AHM3_A/H has a maximum clamping voltage (VC) of 37.5 V at 16 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during transient events. The clamping performance is guaranteed across the full operating temperature range and is critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SM6T27AHM3_A/H qualified for automotive applications?
Yes, SM6T27AHM3_A/H is AEC-Q101 qualified, as confirmed by the HM3 suffix in its ordering code. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and accelerated life testing per the AEC-Q101 standard. The device is intended for use in automotive body electronics, sensor interfaces, and powertrain subsystems where reliability under thermal and mechanical stress is mandatory.
What does the "HM3" suffix indicate in SM6T27AHM3_A/H?
The "HM3" suffix in SM6T27AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., E3 or M3) and confirms compliance with automotive material restrictions and reliability standards. The "_A/H" revision code indicates the specific manufacturing lot and process revision per Vishay's internal documentation.
What is the standoff voltage (VWM) of SM6T27AHM3_A/H, and why does it matter?
The standoff voltage (VWM) of SM6T27AHM3_A/H is 23.1 V. This is the maximum continuous reverse voltage the device can block without exceeding 1 μA leakage current. It must be selected ≥10–20% above the system's normal operating voltage (e.g., 24 V nominal bus) to prevent false triggering during steady-state conditions while retaining sufficient margin for tolerance and ripple.
Can SM6T27AHM3_A/H replace SM6T27A-E3/52 in an existing design?
SM6T27AHM3_A/H is not a direct drop-in replacement for SM6T27A-E3/52 due to differences in qualification and material content: SM6T27AHM3_A/H is AEC-Q101 qualified and halogen-free, whereas SM6T27A-E3/52 is commercial-grade only. Electrical parameters (VBR, VWM, VC) are identical, but PCB layout must verify mechanical compatibility-both use SMB (DO-214AA) package with identical dimensions and pad layout.
SM6T27AHM3_A/H 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:
- Obsolete
- 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 (SMB)
SM6T27AHM3_A/H FAQ
1.How can I place an order for SM6T27AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T27AHM3_A/H 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 SM6T27AHM3_A/H reliable?
The price and inventory of SM6T27AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T27AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T27AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T27AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T27AHM3_A/H?
SM6T27AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T27AHM3_A/H 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 SM6T27AHM3_A/H?
For technical support, including SM6T27AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T27AHM3_A/H requirements.
6.How does Aetrix verify that SM6T27AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T27AHM3_A/H 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 SM6T27AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T27AHM3_A/H?
All SM6T27AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T27AHM3_A/H, 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 SM6T27AHM3_A/H part is unused and in its original packaging.
Return procedure for SM6T27AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T27AHM3_A/H Tags
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