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Vishay General Semiconductor - Diodes Division 1.5SMC27CAHE3_A/I
- Part No.:
- 1.5SMC27CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27CAHE3_A/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,096
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Product details
Overview
1.5SMC27CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at IT = 1.0 mA), 37.5 V maximum clamping voltage (VC) at 40.0 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - used to safeguard automotive sensor signal lines against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC27CAHE3_A/I datasheet, 1.5SMC27CAHE3_A/I pinout, 1.5SMC27CAHE3_A/I application, or 1.5SMC27CAHE3_A/I equivalent, this AEC-Q101-qualified TVS offers verified bidirectional clamping performance, RoHS-compliant matte tin-plated terminals, and MSL Level 1 moisture sensitivity - critical for automotive-grade production and industrial control interface protection.
Technical Context
This device operates as a voltage-clamped transient suppressor with symmetrical avalanche breakdown in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, while the SMC package supports automated placement and meets UL 94 V-0 flammability rating.
The 1.5SMC27CAHE3_A/I delivers 37.5 V clamping at 40.0 A (10/1000 µs), with <1 ns response time and 1.0 µA max reverse leakage at 23.1 V stand-off voltage (VWM). Thermal resistance is RθJA = 75 °C/W (typical), and it sustains operation from –65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 25.7–28.4 V at 1.0 mA test current - defines precise avalanche initiation threshold for bidirectional clamping |
| Stand-off Voltage (VWM) | 23.1 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| Clamping Voltage (VC) | 37.5 V at 40.0 A peak pulse - limits transient voltage seen by protected ICs during 10/1000 µs surges |
| Peak Pulse Power (PPPM) | 1500 W - enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal design |
| AEC-Q101 Qualified | Yes - validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Moisture Sensitivity Level | MSL Level 1 (260 °C peak reflow) - supports standard lead-free assembly without dry-baking |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in bidirectional mode; conducts surge current in either direction once VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| 1500 W peak pulse power (10/1000 µs) | Supports compliance with IEC 61000-4-5 surge immunity requirements up to 4 kV line-to-ground |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes stress on downstream components during transient events |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102, with JESD 201 Class 2 whisker resistance |
| AEC-Q101 qualification | Validates reliability for automotive under-hood and chassis-mounted electronics |
Applications
| Automotive Sensor Signal Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units exposed to load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching precision ADC front-end. Use Value: Limits transient voltage to ≤37.5 V, preserving sensor signal integrity and preventing latch-up in 3.3 V/5 V microcontrollers. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair in vehicle body control modules against ESD and coupled surges. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) providing common-mode and differential-mode surge suppression without signal distortion. Use Value: Maintains CAN bus signal rise/fall times due to low junction capacitance (<100 pF at 0 V), ensuring bit-rate compatibility up to 1 Mbps. |
| Telecom Line Interface | Consumer Appliance Motor Drive Feedback |
Use Scenario: Shielding RS-485 transceivers in base station remote units from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level TVS mounted at PCB edge connector to absorb >90% of surge energy before reaching isolation barrier. Use Value: Withstands repetitive 1500 W pulses at 0.01% duty cycle, enabling long-term field reliability in outdoor telecom enclosures. |
Use Scenario: Protecting hall-effect rotor position feedback signals in BLDC motor drives within washing machines and HVAC systems. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA at 23.1 V) TVS placed across differential hall sensor outputs to suppress commutation noise. Use Value: Prevents false zero-crossing detection caused by >1 kV transients, eliminating motor stall and torque ripple during high-dV/dt switching. |
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 | Lower peak pulse power (600 W), SMB package (smaller thermal mass), same VBR range | Suitable for space-constrained consumer electronics but not automotive under-hood environments requiring 1500 W | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE27CA | Through-hole DO-201 package, identical electrical specs, higher RθJA (~100 °C/W) | Used in legacy industrial power supplies where manual assembly or wave soldering is required | Choose only if through-hole mounting is mandated and thermal derating can be accommodated |
Compared with SMBJ27CA and 1.5KE27CA, the 1.5SMC27CAHE3_A/I uniquely combines AEC-Q101 qualification, SMC's superior thermal dissipation (RθJA = 75 °C/W), and 1500 W surge handling - making it the only option qualified for automotive signal-line protection in production ECUs.
Availability
1.5SMC27CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, telecom line drivers, and consumer appliance motor control systems requiring stable component supply and AEC-Q101 compliance.
Supply support for 1.5SMC27CAHE3_A/I 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-qualified components.
The 1.5SMC Series targets high-energy transient suppression in harsh environments - specifically engineered for automotive, industrial, and telecom applications demanding AEC-Q101 validation and 1500 W surge robustness.
FAQ
What is the clamping voltage of the 1.5SMC27CAHE3_A/I at its rated peak pulse current?
The 1.5SMC27CAHE3_A/I has a maximum clamping voltage (VC) of 37.5 V at 40.0 A peak pulse current (10/1000 µs waveform). This value is measured under standardized test conditions with 0.31" × 0.31" copper pads per terminal and represents the upper voltage limit imposed on protected circuitry during a full-rated surge event. The 1.5SMC27CAHE3_A/I maintains this clamping performance across its qualified temperature range (–65 °C to +150 °C).
Is the 1.5SMC27CAHE3_A/I suitable for automotive applications?
Yes, the 1.5SMC27CAHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It is rated for operation from –65 °C to +150 °C, passes MSL Level 1 reflow, and features matte tin-plated leads compliant with JESD 201 Class 2 whisker testing. The 1.5SMC27CAHE3_A/I is deployed in production automotive systems including engine control modules, ADAS camera interfaces, and body control units.
How does the bidirectional configuration of the 1.5SMC27CAHE3_A/I affect its circuit implementation?
The 1.5SMC27CAHE3_A/I has no polarity marking and functions identically in both directions - ideal for protecting AC-coupled, differential, or floating signal lines such as CAN bus, RS-485, or sensor bridge outputs. Unlike unidirectional TVS diodes, it requires no orientation check during placement and provides symmetrical clamping above ±25.7 V. This eliminates risk of incorrect installation and simplifies layout for balanced signal paths in the 1.5SMC27CAHE3_A/I design.
What is the maximum reverse leakage current of the 1.5SMC27CAHE3_A/I at its stand-off voltage?
The 1.5SMC27CAHE3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM) of 23.1 V, measured at 25 °C. This low leakage ensures minimal loading on high-impedance sensor outputs or bias networks, preserving signal accuracy in precision analog circuits. Leakage remains below 5.0 µA up to 80 % of VWM, supporting reliable operation in battery-powered and low-power automotive subsystems using the 1.5SMC27CAHE3_A/I.
Does the 1.5SMC27CAHE3_A/I require a heatsink for standard operation?
No, the 1.5SMC27CAHE3_A/I is designed for surface-mount operation without an external heatsink. Its SMC (DO-214AB) package achieves RθJA = 75 °C/W with minimum recommended 0.31" × 0.31" copper pads per terminal - sufficient for transient suppression where power dissipation is non-continuous. Continuous power dissipation is limited to 6.5 W at 50 °C ambient; the 1.5SMC27CAHE3_A/I relies on short-duration surge energy absorption rather than steady-state thermal management.
1.5SMC27CAHE3_A/I 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/I FAQ
1.How can I place an order for 1.5SMC27CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27CAHE3_A/I 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/I reliable?
The price and inventory of 1.5SMC27CAHE3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC27CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27CAHE3_A/I?
1.5SMC27CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27CAHE3_A/I 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/I?
For technical support, including 1.5SMC27CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27CAHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC27CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27CAHE3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC27CAHE3_A/I?
All 1.5SMC27CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27CAHE3_A/I, 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/I part is unused and in its original packaging.
Return procedure for 1.5SMC27CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC27CAHE3_A/I Tags
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