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Vishay General Semiconductor - Diodes Division 1.5SMC27A-E3/57T
- Part No.:
- 1.5SMC27A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27A-E3/57T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:140
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Product details
Overview
1.5SMC27A-E3/57T from Vishay General Semiconductor is a unidirectional 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 = 25.7–28.4 V at 1 mA), 23.1 V stand-off voltage (VWM), clamps to ≤37.5 V at 40 A peak pulse current, and delivers 1500 W peak pulse power with a 10/1000 µs waveform - used in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the 1.5SMC27A-E3/57T datasheet, 1.5SMC27A-E3/57T pinout, 1.5SMC27A-E3/57T application, or 1.5SMC27A-E3/57T equivalent, key selection criteria include its unidirectional polarity, DO-214AB (SMC) package, 1.0 µA max reverse leakage at VWM, -65 °C to +150 °C operating junction temperature, and AEC-Q101 qualification eligibility via HE3/HM3 variants.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM (23.1 V) and rapidly avalanches above VBR (min 25.7 V) to limit transient voltages. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive 10/1000 µs surges at 0.01% duty cycle.
Thermally, it exhibits RθJA = 75 °C/W (junction-to-ambient, on 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W (junction-to-leads), supporting reliable operation up to TJ = 150 °C. The cathode band denotes polarity, and it meets J-STD-020 MSL Level 1 with 260 °C lead-free reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise avalanche onset range for predictable clamping threshold |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | ≤37.5 V at 40 A - clamped voltage during 1500 W transient, limiting downstream IC stress |
| PPPM | 1500 W (10/1000 µs) - peak surge handling capacity for lightning and inductive-switching transients |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction events |
| TJ Range | -65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 0.320" x 0.246" footprint and matte tin leads |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with UL 94 V-0 flammability rating; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to protected line's lower-potential side (e.g., GND or low-side rail) |
| Cathode | Avalanche conduction terminal / clamping node | Connected to protected line's higher-potential side (e.g., VIN, signal line); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Handles severe transients like ISO 7637-2 Pulse 5a (load dump) without failure |
| Glass-passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and life |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow assembly without moisture-induced cracking |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, inductive kick) |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring reliability validation |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and jump-start transients in vehicle ECUs. IC Role / Device Role: Unidirectional clamping TVS placed between signal line and ground, absorbing energy before it reaches the transceiver input stage. Use Value: Limits voltage to ≤37.5 V during 40 A surges, preventing latch-up or gate oxide damage in 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers against field-wiring faults and inductive switching noise. IC Role / Device Role: Standoff-rated TVS (23.1 V) installed upstream of optocoupler or Schmitt-trigger input circuitry. Use Value: Blocks >23.1 V transients while drawing only 1.0 µA leakage at nominal 24 V, preserving input threshold accuracy. |
| DC Power Rail Surge Suppression | Consumer Device USB Port Protection |
|
Use Scenario: Secondary-level surge protection on 24 V or 36 V DC power distribution boards in factory automation equipment. IC Role / Device Role: High-power unidirectional TVS shunting surge current to chassis ground during AC-line coupled transients. Use Value: Absorbs 1500 W pulses without degradation, maintaining system uptime where primary MOV-based protection may fatigue. |
Use Scenario: Overvoltage hardening of VBUS lines in USB 2.0 host ports exposed to hot-plug and cable-induced spikes. IC Role / Device Role: Fast-response clamping device placed between VBUS and GND, sized for 5 V nominal operation. Use Value: Clamps 100 V transients to <37.5 V within nanoseconds, protecting USB controller PHY and power switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower PPPM (600 W), smaller SMB (DO-214AA) package, VWM = 24 V, VC = 38.9 V @ 15.4 A | Better suited for space-constrained consumer PCBs; insufficient for 1500 W automotive load dump | Select when board area is critical and surge energy is ≤600 W |
| 1.5KE27A | Through-hole TO-204AE (DO-41), same VBR/VWM specs, but larger footprint and manual assembly requirement | Used in legacy industrial power supplies where SMT is not feasible or thermal mass favors axial leads | Choose only if through-hole assembly is mandated or thermal dissipation via leads is preferred |
Compared with SMBJ24A and 1.5KE27A, the 1.5SMC27A-E3/57T uniquely balances 1500 W surge capability, SMC surface-mount compatibility, and automotive-grade process control - making it optimal for new-generation automotive and industrial SMT designs requiring high-reliability transient immunity without layout compromise.
Availability
1.5SMC27A-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and DC power rail surge suppression requiring stable component supply, RoHS-compliant commercial-grade sourcing, and consistent tape-and-reel delivery.
Supply support for 1.5SMC27A-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series was engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching is non-negotiable.
FAQ
What is the standoff voltage rating of the 1.5SMC27A-E3/57T?
The 1.5SMC27A-E3/57T has a maximum reverse stand-off voltage (VWM) of 23.1 V. This means it remains in high-impedance blocking mode up to this voltage, with reverse leakage current limited to 1.0 µA - ensuring minimal loading on 24 V nominal circuits during normal operation.
Is the 1.5SMC27A-E3/57T suitable for automotive applications?
The 1.5SMC27A-E3/57T itself is RoHS-compliant commercial grade; however, Vishay offers AEC-Q101 qualified versions under HE3/HM3 suffixes (e.g., 1.5SMC27AHE3_A). For automotive use, specify those variants - the 1.5SMC27A-E3/57T provides the same electrical characteristics but lacks formal automotive qualification documentation.
What does the "-E3/57T" suffix indicate in 1.5SMC27A-E3/57T?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "57T" specifies packaging in 7-inch diameter plastic tape-and-reel format containing 850 units - optimized for automated SMT placement and standard logistics handling at Aetrix Electronics.
How does the 1.5SMC27A-E3/57T compare to bidirectional TVS diodes like 1.5SMC27CA?
The 1.5SMC27A-E3/57T is unidirectional and includes a cathode band for polarity-sensitive placement; 1.5SMC27CA is bidirectional with symmetrical clamping in both directions and no polarity marking. Use 1.5SMC27A-E3/57T for DC-biased lines (e.g., power rails), and 1.5SMC27CA for AC or floating signal lines (e.g., RS-485).
What is the thermal resistance of the 1.5SMC27A-E3/57T under standard mounting conditions?
When mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, the 1.5SMC27A-E3/57T exhibits a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W - enabling safe operation at full power with adequate PCB copper area.
1.5SMC27A-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:
- 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):
- 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)
1.5SMC27A-E3/57T FAQ
1.How can I place an order for 1.5SMC27A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27A-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 1.5SMC27A-E3/57T reliable?
The price and inventory of 1.5SMC27A-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 1.5SMC27A-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC27A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27A-E3/57T?
1.5SMC27A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27A-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 1.5SMC27A-E3/57T?
For technical support, including 1.5SMC27A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC27A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27A-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 1.5SMC27A-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC27A-E3/57T?
All 1.5SMC27A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27A-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 1.5SMC27A-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC27A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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