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Vishay General Semiconductor - Diodes Division 1.5SMC27AHE3/57T
- Part No.:
- 1.5SMC27AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27AHE3/57T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,120
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Product details
Overview
1.5SMC27AHE3/57T 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 1.0 mA), 23.1 V stand-off voltage (VWM), and clamps transients to ≤37.5 V at 40.0 A peak pulse current (10/1000 µs), delivering 1500 W peak pulse power. It is AEC-Q101 qualified and used in automotive sensor interfaces and industrial power supply rails.
For engineers reviewing the 1.5SMC27AHE3/57T datasheet, 1.5SMC27AHE3/57T pinout, 1.5SMC27AHE3/57T application, or 1.5SMC27AHE3/57T equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, clamping voltage under surge, thermal resistance (RθJA = 75 °C/W), and AEC-Q101 qualification status for automotive deployment.
Technical Context
The 1.5SMC27AHE3/57T operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ps) to ESD and lightning-induced transients. Its low incremental surge resistance ensures stable clamping during repetitive 10/1000 µs pulses at 0.01% duty cycle.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and supports automated placement. Polarity is marked by a cathode band; no marking applies to bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA - defines reliable avalanche initiation threshold for overvoltage triggering |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | ≤37.5 V at 40.0 A - clamping voltage limiting downstream circuit stress during 10/1000 µs surge |
| PPPM | 1500 W - peak transient power handling capability under standardized waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for derating above 25 °C |
| TJ max. | +150 °C - maximum junction temperature defining safe operating envelope |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge (e.g., reverse-biased supply rail fault) |
| Cathode | Avalanche clamping terminal | Marked with band; connected to higher-potential side; initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients like ISO 7637-2 Pulse 5a without external heat sinking |
| Glass passivated chip junction | Ensures long-term stability and low parameter drift under thermal cycling and humidity exposure |
| MSL Level 1 moisture sensitivity | Allows direct placement into reflow without baking, reducing manufacturing overhead |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V ICs |
Applications
| Automotive Sensor Interface Protection | Industrial DC Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, clamping reverse transients while blocking normal forward bias. Use Value: Limits voltage seen by downstream ASIC to ≤37.5 V during 40 A surges, preserving signal integrity and preventing latch-up in 5 V tolerant receivers. |
Use Scenario: Safeguarding 24 V industrial PLC I/O modules against switching transients from solenoid valves and motor drivers. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted across input terminals to absorb energy before reaching upstream regulators or microcontrollers. Use Value: Withstands repeated 1500 W pulses without degradation, extending system uptime in harsh factory environments. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Shielding Ethernet PHY power pins and auxiliary bias rails in PoE-powered switches from lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: Primary-level unidirectional clamp on 48 V DC input, coordinated with secondary-side MOVs and GDTs. Use Value: Fast <1 ps response captures initial surge edge, reducing let-through energy to downstream filtering stages. |
Use Scenario: Adding secondary-side overvoltage protection on 12 V/19 V adapter outputs feeding laptops or monitors. IC Role / Device Role / Timing Role: Final-stage TVS on regulated output rail, activated only during regulator failure or capacitor short. Use Value: Clamps fault voltage to 37.5 V, preventing catastrophic damage to connected devices while maintaining UL/IEC compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A-E3/52 | Lower peak power (600 W), same VBR range, SMB (DO-214AA) package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics but not automotive load-dump scenarios | Select when board area is limited and surge energy is ≤600 W; verify thermal margin with RθJA = 110 °C/W |
| 1.5KE27A | Through-hole TO-204AE (DO-41), identical electrical specs but incompatible mounting and higher inductance | Legacy designs requiring manual assembly or high-reliability military/aerospace use | Choose only for through-hole legacy upgrades; avoid for new SMT designs due to layout incompatibility and slower response |
Compared with SMBJ27A-E3/52 and 1.5KE27A, the 1.5SMC27AHE3/57T uniquely combines AEC-Q101 qualification, 1500 W capability, and SMC package scalability-making it the preferred choice for automotive and industrial SMT production where reliability, power handling, and automated assembly converge.
Availability
1.5SMC27AHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial DC power rail clamping, telecom line surge suppression, and consumer power adapter input protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC27AHE3/57T 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 optimization.
The 1.5SMC Series targets high-power transient suppression in automotive, industrial, and telecom systems-designed to replace older axial-leaded TVS families with enhanced surge robustness, AEC-Q101 compliance, and SMT manufacturability.
FAQ
What is the clamping voltage of the 1.5SMC27AHE3/57T at its rated peak pulse current?
The 1.5SMC27AHE3/57T clamps to a maximum of 37.5 V at its rated peak pulse current of 40.0 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events, ensuring compatibility with 3.3 V and 5 V logic interfaces when properly laid out.
Is the 1.5SMC27AHE3/57T RoHS-compliant and halogen-free?
Yes, the 1.5SMC27AHE3/57T carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. However, it is not halogen-free; halogen-free versions use the HM3 suffix (e.g., 1.5SMC27AHM3/57T). The HE3 variant meets JEDEC JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow requirements.
How does the 1.5SMC27AHE3/57T differ from non-AEC-Q101 variants like 1.5SMC27A-E3/57T?
The 1.5SMC27AHE3/57T undergoes additional stress testing per AEC-Q101-including extended temperature cycling, highly accelerated life testing (HALT), and mechanical shock-to validate performance in automotive under-hood environments. Electrically identical to the commercial 1.5SMC27A-E3/57T, its qualification enables use in safety-critical ECUs and ADAS modules where field reliability is mandated.
What is the recommended PCB pad layout for optimal thermal and electrical performance of the 1.5SMC27AHE3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad for each terminal of the 1.5SMC27AHE3/57T to achieve rated 1500 W pulse power and thermal resistance of 75 °C/W. Use internal plane connections and thermal vias beneath pads if ambient temperatures exceed 70 °C; avoid narrow traces that increase inductance and degrade clamping speed.
Can the 1.5SMC27AHE3/57T be used in bidirectional protection applications?
No-the 1.5SMC27AHE3/57T is strictly unidirectional, with polarity indicated by a cathode band. For bidirectional protection, select the CA-suffixed variant (e.g., 1.5SMC27CAHE3/57T), which provides symmetrical clamping in both directions and omits the polarity marking. Using the unidirectional 1.5SMC27AHE3/57T in AC or floating-line applications risks forward conduction and failure.
1.5SMC27AHE3/57T 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC27AHE3/57T FAQ
1.How can I place an order for 1.5SMC27AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27AHE3/57T 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 1.5SMC27AHE3/57T reliable?
The price and inventory of 1.5SMC27AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC27AHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC27AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27AHE3/57T?
1.5SMC27AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27AHE3/57T 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 1.5SMC27AHE3/57T?
For technical support, including 1.5SMC27AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27AHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC27AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27AHE3/57T 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 1.5SMC27AHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC27AHE3/57T?
All 1.5SMC27AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27AHE3/57T, 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 1.5SMC27AHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC27AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC27AHE3/57T Tags
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