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Vishay General Semiconductor - Diodes Division SM6T27CA-M3/52
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- Part No.:
- SM6T27CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T27CA-M3/52.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,143
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Product details
Overview
SM6T27CA-M3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 37.5 V maximum clamping voltage (VC) at 16.0 A peak pulse current, 600 W peak pulse power (10/1000 μs), and operates from −65 °C to +150 °C - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the SM6T27CA-M3/52 datasheet, SM6T27CA-M3/52 pinout, SM6T27CA-M3/52 application, or SM6T27CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.4), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
The SM6T27CA-M3/52 implements a glass-passivated silicon junction optimized for fast response (<1 ps typical) to ESD and lightning-induced transients. Its bidirectional architecture enables symmetric clamping without polarity dependency, supporting both positive and negative surges across the same terminals.
Rated for 600 W peak pulse power under 10/1000 μs waveform and derated above 25 °C per thermal curve, it delivers stable clamping up to 150 °C junction temperature with RθJA = 100 °C/W and RθJL = 20 °C/W - enabling use on standard PCB copper pads (0.2" × 0.2") without heatsinking in most applications.
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 begins in both directions |
| VWM | 23.1 V - maximum continuous reverse stand-off voltage before leakage exceeds 1 μA |
| VC @ IPPM | 37.5 V at 16.0 A (10/1000 μs) - actual worst-case clamped voltage seen by protected circuit |
| PPPM | 600 W - peak transient energy absorption capacity without failure under standardized surge waveform |
| TJ range | −65 °C to +150 °C - supports operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated placement and reflow soldering |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); MSL Level 1, 260 °C lead-free reflow capable |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads; cathode/anode terminals are non-polarized for bidirectional operation - no marking on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to ground or common reference; conducts during negative transients |
| Cathode | Transient return path (bidirectional) | Connects to ground or common reference; conducts during positive transients |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 24 V systems |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream ICs like CAN transceivers or ADC front-ends |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 μA at VWM) over temperature and lifetime |
| MSL Level 1, 260 °C compatible | Supports single-pass lead-free reflow without moisture-related popcorning or delamination |
| Halogen-free (M3 suffix) | Fulfills IPC-4101D/93 and JEDEC J-STD-020 environmental requirements for green electronics |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Suppresses load-dump and ISO 7637-2 pulses on analog sensor inputs (e.g., pressure, temperature) in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS clamps ± transients between signal line and chassis ground, preserving signal integrity during ignition switching events. Use Value: Limits voltage excursion to ≤37.5 V during 16 A surge, preventing damage to 3.3 V or 5 V sensor signal conditioning amplifiers. |
Use Scenario: Guards RS-485/RS-232 communication ports in programmable logic controllers against EFT and surge coupling from adjacent motor drives. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at connector entry point, shunting surge energy before reaching transceiver IC. Use Value: Maintains data link reliability under repetitive 4 kV contact discharge (IEC 61000-4-2) due to low dynamic impedance and sub-nanosecond response. |
| Consumer Power Adapter Input | Telecom Line Card Surge Suppression |
|
Use Scenario: Protects AC-DC adapter primary-side rectifier and controller IC from lightning-induced surges entering via mains input. IC Role / Device Role / Timing Role: Front-end bidirectional clamp across bridge rectifier output, absorbing differential-mode transients before bulk capacitor. Use Value: Withstands 600 W peak pulse without degradation, extending adapter lifetime in regions with unstable grid conditions. |
Use Scenario: Shields Ethernet PHY and PoE controller pins on telecom line cards from induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Low-capacitance TVS placed differential across pairs, providing symmetrical clamping without signal distortion. Use Value: Junction capacitance <100 pF (typ.) avoids bandwidth reduction in 100BASE-TX or 1000BASE-T links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28CA | Higher VBR (26.6–29.4 V), lower PPPM (400 W), SMA package (larger footprint, higher RθJA) | Less suitable for high-energy 600 W surges; requires larger PCB area | Select when cost sensitivity outweighs peak power requirement and board space permits SMA |
| 1.5KE27CA | Same VBR range, higher PPPM (1500 W), axial DO-201 package (through-hole, manual assembly) | Not SMT-compatible; unsuitable for automated production or compact designs | Choose only for legacy through-hole systems requiring >600 W margin or field-replaceable modules |
Compared with SMAJ28CA and 1.5KE27CA, the SM6T27CA-M3/52 offers optimal balance of 600 W surge handling, SMB footprint efficiency, and halogen-free compliance - making it preferred for new automotive and industrial SMT designs where reflow compatibility and environmental specs are mandatory.
Availability
SM6T27CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card surge protection requiring stable component supply, consistent M3-grade material compliance, and traceable lot-level documentation.
Supply support for SM6T27CA-M3/52 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 and application-specific performance.
The SM6T Series was engineered for high-volume, high-reliability transient suppression in automotive, industrial, and communications equipment - prioritizing fast response, stable clamping, and robust packaging for automated manufacturing.
FAQ
What is the breakdown voltage tolerance of SM6T27CA-M3/52?
The SM6T27CA-M3/52 has a specified breakdown voltage range of 25.7 V to 28.4 V at 1 mA test current, corresponding to ±10% tolerance around the nominal 27 V rating. This ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 24 V system components without premature conduction.
Is SM6T27CA-M3/52 suitable for automotive applications?
Yes - while the SM6T27CA-M3/52 itself is commercial-grade, its base P/NHM3_X variant is AEC-Q101 qualified. The SM6T27CA-M3/52 shares identical electrical and thermal characteristics, package, and construction, making it suitable for automotive prototyping and non-safety-critical subsystems where halogen-free RoHS compliance is required.
What does the "CA" suffix indicate in SM6T27CA-M3/52?
The "CA" suffix in SM6T27CA-M3/52 explicitly denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM6T27A), it has no polarity marking and functions identically regardless of terminal orientation in the circuit.
How is the clamping voltage of SM6T27CA-M3/52 verified?
The SM6T27CA-M3/52's maximum clamping voltage of 37.5 V is measured at 16.0 A peak pulse current using the standardized 10/1000 μs double-exponential waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and reflects worst-case behavior under realistic surge conditions.
Can SM6T27CA-M3/52 replace SM6T27A in an existing design?
No - SM6T27CA-M3/52 is bidirectional while SM6T27A is unidirectional; substituting them requires verifying circuit polarity and grounding topology. Unidirectional SM6T27A uses a cathode band for orientation and conducts only in reverse bias, whereas SM6T27CA-M3/52 clamps in both directions and lacks polarity marking.
SM6T27CA-M3/52 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:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T27CA-M3/52 FAQ
1.How can I place an order for SM6T27CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T27CA-M3/52 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 SM6T27CA-M3/52 reliable?
The price and inventory of SM6T27CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T27CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SM6T27CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T27CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T27CA-M3/52?
SM6T27CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T27CA-M3/52 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 SM6T27CA-M3/52?
For technical support, including SM6T27CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T27CA-M3/52 requirements.
6.How does Aetrix verify that SM6T27CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T27CA-M3/52 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 SM6T27CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SM6T27CA-M3/52?
All SM6T27CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T27CA-M3/52, 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 SM6T27CA-M3/52 part is unused and in its original packaging.
Return procedure for SM6T27CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T27CA-M3/52 Tags
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