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Vishay General Semiconductor - Diodes Division SM6T27CAHE3_B/H
- Part No.:
- SM6T27CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T27CAHE3_B/H.pdf
- Description:
- 600W,27V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,427
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Product details
Overview
SM6T27CAHE3_B/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 600 W peak pulse power (10/1000 μs), and clamping voltage of 37.5 V at 16 A. It provides robust ESD and surge protection for automotive sensor signal lines, power rails, and I/O interfaces.
For engineers reviewing the SM6T27CAHE3_B/H datasheet, SM6T27CAHE3_B/H pinout, SM6T27CAHE3_B/H application, or SM6T27CAHE3_B/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 150 °C maximum junction temperature, low-inductance SMB package, and compliance with IEC 61000-4-2/4-5 standards for automotive-grade transient immunity.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VC, and IPPM specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1 μA at 23.1 V) and repeatable clamping performance under repetitive transients.
Designed for surface-mount automated assembly, the device meets J-STD-020 MSL Level 1 (260 °C peak reflow), JESD 201 Class 2 whisker resistance, and UL 94 V-0 flammability requirements. Thermal resistance RθJA is 100 °C/W on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise voltage threshold where clamping initiates in either polarity |
| VWM | 23.1 V - maximum continuous reverse stand-off voltage before leakage exceeds 1 μA |
| VC @ IPPM | 37.5 V at 16 A (10/1000 μs) - limits transient voltage seen by protected IC to safe level |
| PPPM | 600 W - sustains high-energy surges such as ISO 7637-2 Pulse 5a without failure |
| TJ max | +150 °C - enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, and UHAST |
| RθJA | 100 °C/W - determines thermal derating needed for sustained power dissipation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Either terminal serves as input/output for bidirectional clamping; no cathode band marking |
| Case (body) | Thermal and mechanical interface | Exposed metal slug not electrically connected; provides thermal conduction to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Withstands automotive load dump and inductive switching surges per ISO 7637-2 without degradation |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage over temperature and lifetime |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT processes without moisture sensitivity concerns |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including temperature cycling, bond wire pull, and accelerated life testing |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (e.g., ESD ±30 kV contact discharge) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ISO 16750-2 jump-start and load-dump transients. IC Role / Device Role: Bidirectional clamping element placed directly at connector entry point. Use Value: Limits transient voltage to ≤37.5 V, preventing damage to 3.3 V/5 V microcontrollers and analog front-ends while maintaining signal integrity. | Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges (IEC 61000-4-4/5). IC Role / Device Role: Primary surge suppression device on 24 V DC input channels. Use Value: Absorbs up to 600 W of transient energy without latch-up, enabling reliable operation in factory automation environments. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Safeguarding secondary-side DC output rails of AC/DC adapters against lightning-induced surges and hot-plug transients. IC Role / Device Role: Secondary-side TVS across 12 V or 19 V output rails. Use Value: Clamps 10/1000 μs surges to 37.5 V within nanoseconds, protecting downstream DC-DC converters and USB-PD controllers. | Use Scenario: Protecting Ethernet PHY interfaces and RS-485 transceivers from ESD and induced lightning surges in outdoor telecom equipment. IC Role / Device Role: Common-mode TVS on differential data lines (e.g., TX+/TX−, RX+/RX−). Use Value: Symmetrical clamping preserves differential signaling integrity while diverting >16 A surge current away from sensitive PHY circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27CA | Same VBR range (25.7–28.4 V), lower PPPM = 400 W, SMA package (larger footprint, higher RθJA) | Not AEC-Q101 qualified; suitable for commercial/industrial only | Select when cost or legacy layout constraints prioritize SMA over SMB, and automotive qualification is unnecessary |
| 1.5KE27CA | Higher PPPM = 1500 W, axial DO-201 package, slower response due to higher parasitic inductance | Requires through-hole mounting; unsuitable for high-speed or space-constrained designs | Choose for high-energy industrial surge protection where board space and SMT compatibility are secondary to peak power handling |
Compared with SMAJ27CA and 1.5KE27CA, SM6T27CAHE3_B/H delivers automotive-grade reliability in a compact SMB footprint with optimized thermal performance and industry-leading surge response speed-critical for modern ADAS sensor nodes and compact power supplies.
Availability
SM6T27CAHE3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and consumer power adapter designs requiring stable component supply, AEC-Q101 compliance, and high-volume SMT manufacturability.
Supply support for SM6T27CAHE3_B/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM6T Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems-designed to meet stringent AEC-Q101, IEC, and ISO surge immunity standards while supporting automated SMT assembly.
FAQ
What does the "CA" suffix indicate in SM6T27CAHE3_B/H?
The "CA" suffix denotes a bidirectional configuration: SM6T27CAHE3_B/H clamps transients equally in both polarities, unlike unidirectional variants (e.g., SM6T27A). This makes it ideal for AC-coupled or differential signal lines where polarity reversal may occur, such as automotive LIN bus or RS-485 interfaces. The device has no cathode marking, confirming its symmetrical construction.
Is SM6T27CAHE3_B/H suitable for automotive applications?
Yes, SM6T27CAHE3_B/H is AEC-Q101 qualified (confirmed by HE3 suffix), tested for temperature cycling, humidity, and high-temperature operating life per automotive reliability standards. Its 150 °C maximum junction temperature, MSL Level 1 reflow rating, and validation against ISO 7637-2 pulses make it appropriate for engine control units, body electronics, and ADAS sensor modules.
What is the clamping voltage of SM6T27CAHE3_B/H at rated peak pulse current?
The clamping voltage VC of SM6T27CAHE3_B/H is 37.5 V at 16 A peak pulse current (10/1000 μs waveform), as specified in the Vishay datasheet. This value represents the maximum voltage imposed on the protected circuit during a standardized surge event and is critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMB (DO-214AA) package of SM6T27CAHE3_B/H compare to SMA in size and thermal performance?
The SMB package of SM6T27CAHE3_B/H measures 3.94 mm × 2.20 mm × 1.52 mm-approximately 30 % smaller than SMA-and achieves RθJA = 100 °C/W on standard 5 mm × 5 mm copper pads. Its lower thermal resistance and reduced parasitic inductance improve surge response and power dissipation efficiency compared to SMA-packaged alternatives like SMAJ27CA.
Does SM6T27CAHE3_B/H require external series impedance for optimal protection?
No, SM6T27CAHE3_B/H functions as a standalone shunt protector and does not require external series impedance for basic clamping. However, in high-speed data lines (e.g., CAN FD), a small series resistor (e.g., 10 Ω) may be added to dampen ringing caused by PCB trace inductance-this is a system-level design choice, not a device requirement. The TVS itself operates effectively with direct placement at the protected node.
SM6T27CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- 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)
SM6T27CAHE3_B/H FAQ
1.How can I place an order for SM6T27CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T27CAHE3_B/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 SM6T27CAHE3_B/H reliable?
The price and inventory of SM6T27CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T27CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T27CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T27CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T27CAHE3_B/H?
SM6T27CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T27CAHE3_B/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 SM6T27CAHE3_B/H?
For technical support, including SM6T27CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T27CAHE3_B/H requirements.
6.How does Aetrix verify that SM6T27CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T27CAHE3_B/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 SM6T27CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T27CAHE3_B/H?
All SM6T27CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T27CAHE3_B/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 SM6T27CAHE3_B/H part is unused and in its original packaging.
Return procedure for SM6T27CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T27CAHE3_B/H Tags
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