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Vishay General Semiconductor - Diodes Division 1.5SMC27CA-E3/57T
- Part No.:
- 1.5SMC27CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27CA-E3/57T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:808
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Product details
Overview
1.5SMC27CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 27 V breakdown voltage (VBR min/max = 25.7–28.4 V at 1.0 mA), 23.1 V stand-off voltage (VWM), clamps to ≤37.5 V at 40.0 A peak pulse current (10/1000 µs), and delivers 1500 W peak pulse power. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the 1.5SMC27CA-E3/57T datasheet, 1.5SMC27CA-E3/57T pinout, 1.5SMC27CA-E3/57T application, or 1.5SMC27CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, SMC (DO-214AB) package compatibility, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compliance with UL 497B surge protector standards.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection against voltage transients regardless of polarity-ideal for AC-coupled or floating signal paths. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 10/1000 µs waveform rating reflects real-world lightning and inductive-switching surge immunity.
The device exhibits fast response time (<1.0 ns), low incremental surge resistance, and meets MSL Level 1 per J-STD-020 with peak reflow temperature up to 260 °C. Its thermal design supports operation from –65 °C to +150 °C junction temperature, with RθJL = 15 °C/W enabling effective heat transfer to PCB copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA - defines reliable conduction onset under bidirectional surge stress |
| VWM | 23.1 V - maximum continuous reverse voltage before leakage exceeds 1.0 µA; sets safe operating margin below VBR |
| VC @ IPPM | ≤37.5 V at 40.0 A - clamping voltage during 1500 W transient; determines protected circuit's maximum stress level |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform; validates immunity to IEC 61000-4-5 Level 4 surges |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads; guides PCB thermal layout |
| TJ range | –65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments without derating |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" length and matte tin-plated leads compliant to J-STD-002 |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; terminals are matte tin plated and solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no polarity marking; both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path terminal | No functional polarity; either terminal connects to protected line, the other to ground or reference plane |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded circuits without polarity concerns |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly designed layouts |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes let-through voltage to preserve downstream IC reliability during high-energy transients |
| MSL Level 1, 260 °C peak reflow | Allows direct placement into standard lead-free SMT assembly processes without moisture sensitivity handling |
| AEC-Q101 qualified option available | HE3/HM3 variants meet automotive-grade reliability requirements; this E3/57T variant is commercial grade |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and chassis ground to clamp positive/negative spikes. Use Value: Limits voltage excursions to ≤37.5 V, preventing damage to 36 V-rated DC-DC controllers and microcontrollers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) from ESD and field-induced surges in factory automation. IC Role / Device Role / Timing Role: TVS connected across signal and return lines to absorb common-mode transients before they reach ADC inputs. Use Value: Maintains signal integrity by suppressing >15 kV ESD events (IEC 61000-4-2) with sub-nanosecond response. |
| Telecom Interface Surge Protection | Consumer Equipment AC Adapter Input Protection |
Use Scenario: Safeguarding Ethernet PHY interfaces or RS-485 transceivers exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional TVS deployed on differential pair lines (e.g., A/B) referenced to local ground plane. Use Value: Withstands repetitive 10/1000 µs surges up to 1500 W, meeting GR-1089-CORE telecom surge immunity requirements. |
Use Scenario: Protecting primary-side rectifier outputs and secondary-side DC bus in wall adapters against mains-borne transients. IC Role / Device Role / Timing Role: TVS placed across bulk capacitor terminals to suppress switching noise and surge coupling from input stage. Use Value: Prevents overvoltage failure of electrolytic capacitors and optocouplers during 6 kV ring wave tests (IEC 61000-4-5). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27CA | Same VBR range (25.7–28.4 V) but lower PPPM = 600 W; SMB package (smaller footprint, higher RθJA = 100 °C/W) | Preferred where board space is constrained and surge energy is limited to <600 W (e.g., low-power USB ports) | Select SMBJ27CA only if system-level surge testing confirms 600 W sufficiency and thermal budget allows higher junction temperature rise. |
| 1.5KE27CA | Through-hole TO-218 package; identical electrical specs (VBR, VC, PPPM) but higher IFSM = 250 A and lower RθJA = 50 °C/W | Suitable for high-reliability, high-current industrial power modules where manual assembly or wave soldering is used | Choose 1.5KE27CA when mechanical robustness, higher surge repetition tolerance, or legacy through-hole compatibility is required. |
Compared with SMBJ27CA and 1.5KE27CA, the 1.5SMC27CA-E3/57T offers optimal balance of 1500 W surge capacity, SMT manufacturability, and thermal performance in compact SMC packaging-making it preferred for automotive and industrial surface-mount power rails where both space and ruggedness matter.
Availability
1.5SMC27CA-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom infrastructure requiring stable component supply with RoHS-compliant, commercial-grade TVS protection.
Supply support for 1.5SMC27CA-E3/57T 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was developed to deliver high-power, surface-mount TVS solutions for harsh-environment electronics-targeting automotive, industrial, and telecom systems needing robust, standardized, and AEC-Q101-capable surge protection.
FAQ
What does the "CA" suffix mean in 1.5SMC27CA-E3/57T?
The "CA" suffix denotes a bidirectional configuration: the 1.5SMC27CA-E3/57T conducts identically in both directions, making it suitable for protecting AC signals, differential lines, or ungrounded circuits. Unlike unidirectional "A" variants, it has no cathode band marking and provides symmetrical clamping above ±25.7 V breakdown threshold. This is confirmed in Vishay's 1.5SMC series documentation under "Devices for Bidirectional Applications".
Is 1.5SMC27CA-E3/57T AEC-Q101 qualified?
No, the 1.5SMC27CA-E3/57T is RoHS-compliant commercial-grade per base suffix "E3", not AEC-Q101 qualified. Automotive-grade versions use "HE3" or "HM3" suffixes (e.g., 1.5SMC27CAHE3_A). The "E3/57T" ordering code specifically indicates tape-and-reel packaging for commercial use, with no AEC-Q101 test data included in its qualification scope.
What is the maximum clamping voltage of 1.5SMC27CA-E3/57T under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC27CA-E3/57T is 37.5 V at 40.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88303 and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events.
Can 1.5SMC27CA-E3/57T be used in place of a unidirectional TVS like 1.5SMC27A-E3/57T?
No-1.5SMC27CA-E3/57T is bidirectional and lacks polarity marking, while 1.5SMC27A-E3/57T is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC or floating nodes; unidirectional is required for DC rails where reverse conduction must be blocked. Their VBR and VC values differ slightly due to test condition variations.
What PCB pad layout is recommended for optimal thermal performance of 1.5SMC27CA-E3/57T?
Vishay specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve the rated RθJA = 75 °C/W and full 1500 W pulse power capability. Reducing pad area increases thermal resistance and reduces surge handling; internal copper planes and thermal vias further improve heat dissipation in high-reliability designs using the 1.5SMC27CA-E3/57T.
1.5SMC27CA-E3/57T 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-E3/57T FAQ
1.How can I place an order for 1.5SMC27CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27CA-E3/57T 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-E3/57T reliable?
The price and inventory of 1.5SMC27CA-E3/57T 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-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC27CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27CA-E3/57T?
1.5SMC27CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27CA-E3/57T 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-E3/57T?
For technical support, including 1.5SMC27CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC27CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27CA-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC27CA-E3/57T?
All 1.5SMC27CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27CA-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC27CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC27CA-E3/57T Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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