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Vishay General Semiconductor - Diodes Division 1.5SMC27CAHE3/57T
- Part No.:
- 1.5SMC27CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27CAHE3/57T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,923
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Product details
Overview
1.5SMC27CAHE3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 27 V standoff voltage (VWM), 37.5 V clamping voltage (VC) at 40 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform. It protects signal lines and power rails in automotive sensor units, industrial I/O interfaces, and telecom line cards against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5SMC27CAHE3/57T datasheet, 1.5SMC27CAHE3/57T pinout, 1.5SMC27CAHE3/57T application, or 1.5SMC27CAHE3/57T equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs requiring robust ESD and surge immunity without polarity constraints.
Technical Context
The 1.5SMC27CAHE3/57T operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±37.5 V in both directions while maintaining ≤1.0 μA reverse leakage at 23.1 V (VWM). Its glass-passivated junction enables fast response time (<1.0 ns) and stable breakdown behavior under repetitive 10/1000 μs surges at 0.01% duty cycle.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it delivers 1500 W peak pulse power dissipation with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation across -65 °C to +150 °C junction temperature range. The matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 23.1 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (Breakdown Voltage) | 25.7–28.4 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transient events. |
| VC (Clamping Voltage) | 37.5 V at 40 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 1500 W - Sustains 10/1000 μs surge energy without failure; validated per Fig. 1 derating curve. |
| IPPM (Peak Pulse Current) | 40 A - Maximum non-repetitive surge current handled at VWM = 23.1 V; used for I/O protection sizing. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive and high-ambient industrial use. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional device with no polarity marking; symmetrical terminals enable orientation-agnostic placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Either terminal serves as anode or cathode depending on transient polarity; no band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock per JESD47. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surge events on 50 Ω source impedance without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or ADC front-ends. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; reduces manufacturing complexity. |
| Glass passivated junction | Ensures stable leakage performance and long-term stability under humidity and thermal cycling. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in engine control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching MCU or signal conditioner. Use Value: Maintains signal integrity below 37.5 V during 40 A transients, preventing latch-up or damage to 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input filter stage, coordinated with series resistor and RC snubber. Use Value: Limits transient voltage to ≤37.5 V within nanoseconds, enabling reliable optocoupler triggering and eliminating false state transitions. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Feedback Protection |
Use Scenario: Shielding Ethernet PHY interfaces and RS-485 transceivers in base station equipment from lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level TVS paired with GDT or MOV on line side; handles residual energy after primary suppression. Use Value: Clamps differential surges to <40 V, preserving signal eye diagram integrity and meeting GR-1089-CORE immunity requirements. |
Use Scenario: Guarding hall-effect current sensing outputs and encoder feedback lines in washing machine motor inverters against commutation spikes. IC Role / Device Role / Timing Role: Localized protection at sensor PCB edge, minimizing trace inductance between TVS and protected node. Use Value: Responds in <1 ns to 100 V/μs edges, limiting spike amplitude to 37.5 V and preventing ADC saturation or comparator mis-triggering. |
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), VWM = 24 V, VC = 38.9 V at 15.4 A | Lower surge handling; suitable only for sub-2 kV IEC 61000-4-5 Level 2/3 environments | Select when board space is constrained and peak surge current remains <20 A. |
| 1.5KE27CA | Through-hole TO-204AE (DO-15) package, same VWM/VC ratings, but higher RθJA (100 °C/W) and no AEC-Q101 qualification | Lacks automotive qualification and surface-mount compatibility; requires wave solder or hand-soldering | Choose for legacy through-hole designs where reflow compatibility and AEC compliance are not required. |
Compared with SMBJ24CA and 1.5KE27CA, the 1.5SMC27CAHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC package scalability - making it the preferred choice for new automotive and industrial SMT platforms demanding high-reliability, high-power transient suppression without layout redesign.
Availability
1.5SMC27CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line protection circuits requiring stable component supply, AEC-Q101 compliance, and consistent 1500 W surge capability.
Supply support for 1.5SMC27CAHE3/57T 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 was developed to deliver high-power, surface-mount TVS solutions for automotive, industrial, and telecom systems where compact size, AEC-Q101 qualification, and repeatable clamping performance are mandatory design requirements.
FAQ
What is the clamping voltage of the 1.5SMC27CAHE3/57T at its rated peak pulse current?
The 1.5SMC27CAHE3/57T has a maximum clamping voltage (VC) of 37.5 V at 40 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per Figure 1 in the Vishay datasheet 88303 and reflects the actual voltage imposed on the protected circuit during worst-case surge events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC27CAHE3/57T suitable for automotive applications?
Yes, the 1.5SMC27CAHE3/57T is AEC-Q101 qualified, as indicated by the "HE3" suffix, and is explicitly rated for automotive use per Vishay's ordering information notes. It meets requirements for temperature cycling, humidity testing, and mechanical shock, making it appropriate for engine control units, body electronics, and ADAS sensor interfaces where reliability under harsh environmental conditions is essential.
Does the 1.5SMC27CAHE3/57T have polarity markings?
No, the 1.5SMC27CAHE3/57T is a bidirectional TVS diode and carries no polarity marking on the SMC (DO-214AB) package. Its symmetrical construction allows either terminal to serve as anode or cathode depending on transient polarity - simplifying PCB layout and eliminating orientation errors during automated placement.
What is the standoff voltage (VWM) specification for the 1.5SMC27CAHE3/57T?
The standoff voltage (VWM) for the 1.5SMC27CAHE3/57T is 23.1 V, representing the maximum continuous reverse working voltage at which leakage current remains ≤1.0 μA. This value ensures compatibility with 24 V nominal systems while providing sufficient margin above normal operating voltage to avoid false triggering during ripple or noise.
How does the 1.5SMC27CAHE3/57T compare to unidirectional variants like 1.5SMC27AHE3/57T?
The 1.5SMC27CAHE3/57T differs from unidirectional variants solely in its bidirectional conduction capability - it clamps transients of either polarity, whereas 1.5SMC27AHE3/57T only protects against reverse-polarity surges. Both share identical VWM (23.1 V), VC (37.5 V), PPPM (1500 W), and AEC-Q101 qualification, but the "CA" version eliminates need for polarity-aware routing in AC-coupled or floating signal paths.
1.5SMC27CAHE3/57T 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:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC27CAHE3/57T FAQ
1.How can I place an order for 1.5SMC27CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27CAHE3/57T 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 1.5SMC27CAHE3/57T reliable?
The price and inventory of 1.5SMC27CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC27CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC27CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27CAHE3/57T?
1.5SMC27CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27CAHE3/57T 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 1.5SMC27CAHE3/57T?
For technical support, including 1.5SMC27CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC27CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27CAHE3/57T 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 1.5SMC27CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC27CAHE3/57T?
All 1.5SMC27CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27CAHE3/57T, 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 1.5SMC27CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC27CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC27CAHE3/57T Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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