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Vishay General Semiconductor - Diodes Division 1.5SMC27CAHE3_A/H
- Part No.:
- 1.5SMC27CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27CAHE3_A/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,101
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Product details
Overview
1.5SMC27CAHE3_A/H 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 sensitive ICs and MOSFETs against lightning-induced transients and inductive switching surges in automotive and industrial power rails.
For engineers reviewing the 1.5SMC27CAHE3_A/H datasheet, 1.5SMC27CAHE3_A/H pinout, 1.5SMC27CAHE3_A/H application, or 1.5SMC27CAHE3_A/H equivalent, this AEC-Q101 qualified, RoHS-compliant TVS offers verified bidirectional clamping, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive ECUs and industrial motor drives.
Technical Context
The 1.5SMC27CAHE3_A/H operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±37.5 V 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 with thermal resistance of 75 °C/W (junction-to-ambient) and supports operating junction temperatures from –65 °C to +150 °C - enabling use in under-hood automotive environments without derating penalties below 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 23.1 V - maximum continuous reverse voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (Breakdown Voltage) | 25.7–28.4 V at 1.0 mA - guaranteed avalanche initiation range; ensures consistent turn-on across temperature and unit variance. |
| VC (Clamping Voltage) | 37.5 V at 40 A IPPM - peak voltage seen by protected circuit during worst-case 10/1000 µs surge; limits stress on downstream 30 V-rated MOSFETs. |
| PPPM | 1500 W - peak transient energy absorption capability with standard 10/1000 µs waveform; meets ISO 7637-2 Pulse 1/2/5a requirements. |
| TJ max. | +150 °C - maximum junction temperature; supports operation in engine control modules and industrial inverters without forced cooling. |
| MSL Level | Level 1 per J-STD-020 - no floor life limitation; allows indefinite storage and standard reflow without baking. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTOL, TCT, and ESD testing; required for powertrain and chassis applications. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking - both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical bidirectional terminals; connects across protected line (e.g., CAN_H–CAN_L or VBUS–GND) without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential lines (e.g., CAN, RS-485) or AC-coupled rails without external polarity management. |
| 1500 W peak pulse power | Sustains IEC 61000-4-5 Level 4 (4 kV) surges with margin when mounted on recommended 8 mm × 8 mm copper pads. |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA) over 15-year automotive service life under thermal cycling. |
| AEC-Q101 qualification | Validates robustness for automotive power electronics, including engine control units, body controllers, and ADAS sensor interfaces. |
| MSL Level 1 rating | Eliminates pre-reflow baking steps and supports high-throughput SMT assembly in Tier-1 manufacturing lines. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VBAT and GND to clamp spikes up to ±100 V within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in 30 V-rated power MOSFETs and microcontrollers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding analog input channels of PLC analog I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting transient energy from 4–20 mA current loop inputs to ground. Use Value: Maintains signal integrity by limiting voltage excursion to <37.5 V, preserving ADC accuracy and preventing op-amp saturation. |
| Automotive CAN Bus Interface | Industrial Sensor Signal Lines |
Use Scenario: Protecting high-speed CAN transceivers (e.g., TJA1042) against ESD and coupled transients on CAN_H/CAN_L lines. IC Role / Device Role / Timing Role: Symmetric bidirectional TVS connected differentially across CAN bus pair to suppress common-mode and differential-mode surges. Use Value: Clamps transients to <37.5 V without distorting 1 Mbps CAN signaling due to sub-1 ns response and low dynamic impedance. |
Use Scenario: Shielding temperature and pressure sensor outputs (e.g., PT100, piezoresistive) in factory automation equipment. IC Role / Device Role / Timing Role: Low-leakage TVS placed at sensor connector interface to divert lightning-induced surges before reaching signal conditioning circuitry. Use Value: Limits reverse leakage to ≤1.0 µA at 23.1 V, avoiding DC offset errors in precision 24-bit sigma-delta ADC front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28CA | Lower PPPM (400 W), same SMC package, VWM = 23.1 V, VC = 43.5 V at 9.2 A. | Not suitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4; limited to lower-energy surges in non-automotive consumer gear. | Select only if system-level surge testing confirms <400 W requirement and cost is primary constraint. |
| 1.5KE27CA | Through-hole DO-15 package, same VWM/VC specs, but higher RθJA (100 °C/W) and no AEC-Q101 qualification. | Requires PCB redesign for through-hole mounting; lacks automotive reliability validation and MSL Level 1 handling. | Acceptable for industrial prototypes or legacy board refreshes where SMT compatibility and automotive compliance are not required. |
Compared with SMAJ28CA and 1.5KE27CA, the 1.5SMC27CAHE3_A/H uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and MSL Level 1 in an SMC package - making it the only drop-in solution for production automotive ECUs requiring zero layout change and full compliance traceability.
Availability
1.5SMC27CAHE3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive I/O, CAN bus interface, and sensor signal line protection requiring stable component supply, full AEC-Q101 documentation, and traceable RoHS compliance.
Supply support for 1.5SMC27CAHE3_A/H 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for robust transient suppression in harsh environments - delivering high-power clamping, AEC-Q101 validation, and SMT scalability for next-generation automotive electronics and industrial controls.
FAQ
What is the clamping voltage of the 1.5SMC27CAHE3_A/H at its rated peak pulse current?
The 1.5SMC27CAHE3_A/H has a maximum clamping voltage (VC) of 37.5 V at 40 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions per JEDEC standards and represents the upper voltage limit imposed on protected circuitry during worst-case transient events - critical for ensuring compatibility with 30 V-rated downstream components like power MOSFETs and CAN transceivers.
Is the 1.5SMC27CAHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC27CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101 qualified construction. It meets requirements for engine control units, body electronics, and ADAS subsystems, including validation for high-temperature operation (–65 °C to +150 °C), thermal cycling, and surge immunity per ISO 7637-2 and IEC 61000-4-5.
What does the "CA" suffix mean in 1.5SMC27CAHE3_A/H?
The "CA" suffix in 1.5SMC27CAHE3_A/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical electrical characteristics (VWM, VBR, VC) for positive and negative voltage excursions. This eliminates polarity concerns during placement and makes it ideal for protecting differential buses like CAN, RS-485, or AC-coupled signal paths.
What is the maximum operating temperature for the 1.5SMC27CAHE3_A/H?
The 1.5SMC27CAHE3_A/H has a maximum junction temperature (TJ max.) of +150 °C and is rated for continuous operation across –65 °C to +150 °C. Its thermal resistance (RθJA) is 75 °C/W when mounted on the recommended 8.0 mm × 8.0 mm copper pad layout, allowing reliable performance in under-hood automotive locations and industrial motor drive enclosures without active cooling.
Does the 1.5SMC27CAHE3_A/H require special handling during PCB assembly?
No - the 1.5SMC27CAHE3_A/H is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and withstands standard lead-free reflow profiles (peak 260 °C) without baking or dry-pack requirements. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, supporting high-yield automated placement and soldering in high-volume SMT lines.
1.5SMC27CAHE3_A/H 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:
- -
- 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_A/H FAQ
1.How can I place an order for 1.5SMC27CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27CAHE3_A/H 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_A/H reliable?
The price and inventory of 1.5SMC27CAHE3_A/H 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_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC27CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27CAHE3_A/H?
1.5SMC27CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27CAHE3_A/H 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_A/H?
For technical support, including 1.5SMC27CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27CAHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC27CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27CAHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC27CAHE3_A/H?
All 1.5SMC27CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27CAHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC27CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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