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Vishay General Semiconductor - Diodes Division 1.5SMC27CA-M3/57T
- Part No.:
- 1.5SMC27CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27CA-M3/57T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,905
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Product details
Overview
1.5SMC27CA-M3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features a 23.1 V stand-off voltage (VWM), 25.7–28.4 V breakdown voltage (VBR) at 1 mA, 37.5 V maximum clamping voltage (VC) at 40 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC27CA-M3/57T datasheet, 1.5SMC27CA-M3/57T pinout, 1.5SMC27CA-M3/57T application, or 1.5SMC27CA-M3/57T equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal resistance (RθJA = 75 °C/W), AEC-Q101 qualification status, and halogen-free RoHS compliance per M3 suffix - critical for ESD/surge design validation and automotive-grade BOM selection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of voltage polarity - essential for protecting AC-coupled or differential signal paths. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), while low incremental surge resistance enables precise voltage limiting during lightning-induced transients.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Fig. 2; mounted on 8.0 mm × 8.0 mm copper pads, it sustains 1500 W peak pulse power with 0.01% duty cycle. Its SMC package meets UL 94 V-0 and J-STD-020 MSL Level 1 (260 °C reflow peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 23.1 V - Maximum continuous reverse voltage before significant conduction; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 25.7–28.4 V at 1 mA - Voltage at which device enters avalanche; tight 10% tolerance ensures predictable turn-on across production lots. |
| VC (Clamping) | 37.5 V at 40 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream ICs. |
| PPPM | 1500 W - Surge energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV line-to-line) when properly laid out. |
| IPPM | 40 A - Peak surge current capability; validated with unidirectional/bidirectional 10/1000 µs waveform per ANSI/IEEE C62.35. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments without thermal shutdown. |
| RθJA | 75 °C/W - Thermal resistance junction-to-ambient; requires minimum 8.0 mm × 8.0 mm copper pad per terminal for full power rating. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Bidirectional construction has no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path | Both terminals conduct identically in either direction; no cathode band marking - eliminates orientation errors during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both polarities - simplifies protection of AC, differential, or floating signal lines without polarity constraints. |
| 1500 W peak pulse power | Withstands 40 A surges per 10/1000 µs waveform - meets IEC 61000-4-5 for industrial and automotive power rail protection. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on protected ICs - e.g., 37.5 V clamp vs. 27.5 V nominal breakdown ensures robust safety margin. |
| AEC-Q101 qualified (M3 suffix) | Validated for automotive applications including engine control modules and ADAS sensor interfaces - includes HTOL, TC, and HAST testing. |
| MSL Level 1 moisture sensitivity | Rated for 260 °C peak reflow without preconditioning - compatible with standard SMT assembly processes and eliminates bake requirements. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt surge energy before reaching PHY layer. Use Value: Clamps transients to ≤37.5 V within nanoseconds, preventing damage to 5 V or 3.3 V transceivers rated for <40 V absolute maximum. |
Use Scenario: Shielding 24 V digital input modules in factory automation controllers from inductive kickback and EFT bursts. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on dry-contact or relay output lines exposed to 24 V DC field wiring. Use Value: Absorbs 1500 W surges without degradation, maintaining system uptime where replacement downtime incurs production loss. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE injectors against lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Common-mode TVS across differential pairs (e.g., ETH+ to ETH−) to suppress asymmetric transients. Use Value: Symmetric clamping ensures balanced suppression without skewing differential signaling integrity during surge events. |
Use Scenario: Secondary-side overvoltage protection on 12 V/19 V DC outputs of laptop adapters subjected to accidental short-circuit recovery spikes. IC Role / Device Role / Timing Role: Fast-acting clamp between VOUT and GND to limit post-regulator overshoot during fault clearing. Use Value: 37.5 V clamping prevents latch-up in connected devices with 20 V absolute maximum ratings, such as USB-C PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Lower PPPM (600 W), smaller SMB package (DO-214AA), VC = 38.9 V at 15.4 A - 2.7× lower surge current rating. | Suitable for space-constrained consumer ports but insufficient for automotive load dump (ISO 7637-2 Pulse 5a). | Select when board area is critical and surge threat level is limited to IEC 61000-4-2/4-4 only. |
| 1.5KE27CA | Through-hole TO-204AE (DO-15) package, same VWM/VBR/VC, but higher RθJA (100 °C/W) and no AEC-Q101 qualification. | Acceptable for legacy industrial designs with wave soldering, but not for new automotive or high-reliability SMT production. | Choose only for prototyping or repair where SMT compatibility and automotive qualification are not required. |
Compared with SMBJ24CA and 1.5KE27CA, the 1.5SMC27CA-M3/57T uniquely combines AEC-Q101 qualification, 1500 W surge rating in SMT format, and halogen-free compliance - making it the only option among the three qualified for volume automotive electronics production.
Availability
1.5SMC27CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter outputs requiring stable component supply, long-term lifecycle support, and AEC-Q101 assurance.
Supply support for 1.5SMC27CA-M3/57T 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 validation.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, high surge immunity, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC27CA-M3/57T at its rated peak pulse current?
The 1.5SMC27CA-M3/57T exhibits a maximum clamping voltage (VC) of 37.5 V when subjected to its rated 40 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is the 1.5SMC27CA-M3/57T certified for automotive use?
Yes, the 1.5SMC27CA-M3/57T is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure (M3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified variants). It undergoes rigorous stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress test (HAST) - making it suitable for under-hood and ADAS applications.
Does the 1.5SMC27CA-M3/57T have polarity markings on its package?
No, the 1.5SMC27CA-M3/57T is a bidirectional TVS diode and carries no polarity marking - its SMC (DO-214AB) package is symmetrical with identical electrical behavior in both directions. Unlike unidirectional variants (e.g., 1.5SMC27A), it lacks a cathode band, eliminating orientation-dependent placement errors in automated assembly.
What is the thermal resistance of the 1.5SMC27CA-M3/57T, and how does it affect layout?
The 1.5SMC27CA-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To achieve full 1500 W surge rating, PCB layout must provide this minimum copper area - reducing pad size increases junction temperature and risks thermal runaway during repetitive surges.
How does the 1.5SMC27CA-M3/57T differ from the unidirectional 1.5SMC27A-M3/57T?
The 1.5SMC27CA-M3/57T is bidirectional with symmetrical clamping in both polarities and no cathode marking, whereas the 1.5SMC27A-M3/57T is unidirectional, features a cathode band, and conducts only in reverse bias. Their VWM, VBR, and VC values differ slightly (23.1 V vs. 23.1 V VWM; 25.7–28.4 V vs. 25.7–28.4 V VBR), but the CA variant is mandatory for AC, differential, or floating-line protection where polarity is undefined.
1.5SMC27CA-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, 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):
- 40A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
1.5SMC27CA-M3/57T FAQ
1.How can I place an order for 1.5SMC27CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27CA-M3/57T 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 1.5SMC27CA-M3/57T reliable?
The price and inventory of 1.5SMC27CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC27CA-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC27CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27CA-M3/57T?
1.5SMC27CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27CA-M3/57T 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 1.5SMC27CA-M3/57T?
For technical support, including 1.5SMC27CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27CA-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC27CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27CA-M3/57T 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 1.5SMC27CA-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC27CA-M3/57T?
All 1.5SMC27CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27CA-M3/57T, 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 1.5SMC27CA-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC27CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC27CA-M3/57T Tags
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