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Vishay General Semiconductor - Diodes Division 1.5KE27CAHE3_B/C
- Part No.:
- 1.5KE27CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE27CAHE3_B/C.pdf
- Description:
- 1.5KW,27V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,382
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Product details
Overview
1.5KE27CAHE3_B/C from Vishay General Semiconductor is a bidirectional 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), 1500 W peak pulse power (10/1000 µs), clamping voltage of 37.5 V at 40.0 A, and operates across –55 °C to +175 °C. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE27CAHE3_B/C datasheet, 1.5KE27CAHE3_B/C pinout, 1.5KE27CAHE3_B/C application, or 1.5KE27CAHE3_B/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, RoHS-compliant HE3 packaging, thermal resistance data (RθJL = 15.4 °C/W), and real-world clamping behavior under standardized surge waveforms.
Technical Context
This bidirectional TVS diode employs a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its symmetrical clamping characteristic ensures identical protection in both polarities, with no polarity marking on the case.
Rated for 1500 W peak pulse power per 10/1000 µs waveform and 200 A non-repetitive forward surge (unidirectional only), it supports high-energy transient suppression without degradation when operated within derated thermal limits - including 6.5 W steady-state dissipation at TL = 75 °C and RθJA = 75 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at IT = 1.0 mA - defines precise clamping onset threshold for bidirectional surge events |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 37.5 V at 40.0 A - actual clamped voltage during full 1500 W transient, critical for downstream device survivability |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, enabling protection against severe lightning surges |
| TJ max. | +175 °C - extended junction temperature rating allows operation in under-hood automotive and industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance enables effective heat transfer to PCB copper or heatsink |
| AEC-Q101 | Qualified - certified for automotive-grade reliability per stress test requirements (applies to HE3 suffix variants) |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability standards. Lead length 0.375" (9.5 mm); diameter 0.042" (1.07 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional current path | No polarity marking; terminals interchangeable - enables single-component placement for AC or floating DC line protection |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) with margin when properly mounted |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience damaging overvoltage - critical for protecting high-speed logic and analog front-ends |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain, body control, and ADAS modules requiring zero-defect field performance |
| RoHS-compliant & JESD 201 class 2 whisker resistant | Meets global environmental compliance and mitigates tin whisker risk in high-reliability, long-lifecycle applications |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protection of 12 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across input rails to limit voltage excursions to safe levels during transients. Use Value: Maintains VC ≤ 37.5 V during 40 A surge, preventing latch-up or gate oxide rupture in downstream PMICs and microcontrollers. |
Use Scenario: Shielding 4–20 mA current loop transmitters from EFT bursts and induced surges on field wiring. IC Role / Device Role / Timing Role: Low-capacitance TVS placed differential-mode across loop inputs to suppress common-mode transients without distorting analog signals. Use Value: Clamps <100 ns after surge onset, preserving signal integrity and avoiding ADC saturation or DAC output corruption. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Inputs |
Use Scenario: Safeguarding Ethernet PHYs and DSL line drivers from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on RJ-45 interface side, coordinated with GDT or polymer PTC for staged protection. Use Value: Withstands 1500 W pulses while holding clamped voltage below 37.5 V - well below PHY IC absolute maximum ratings. |
Use Scenario: Protecting BLDC motor controller inputs from back-EMF spikes generated by brushed motor commutation. IC Role / Device Role / Timing Role: Bidirectional clamp across H-bridge supply rails to absorb inductive kickback energy. Use Value: Absorbs 1500 W peak energy without failure, eliminating need for bulkier MOVs or slower varistors in compact appliance designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA | Lower peak power (600 W), smaller SMB package (vs. DO-201AB), higher VC/VBR ratio (1.45× vs. 1.39×) | Better suited for space-constrained PCBs where 600 W suffices; not rated for AEC-Q101 | Select SMBJ26CA only if board area is critical and surge threat level is ≤ IEC 61000-4-5 Level 2. |
| 1.5KE27C | Same electrical specs but commercial-grade (non-AEC-Q101), E3 suffix only (no HE3), class 1A whisker rating | Acceptable for consumer/industrial use where automotive qualification is unnecessary | Choose 1.5KE27C for cost-sensitive non-automotive designs; retain 1.5KE27CAHE3_B/C where AEC-Q101 traceability and class 2 whisker resistance are mandatory. |
Compared with SMBJ26CA and 1.5KE27C, the 1.5KE27CAHE3_B/C uniquely combines AEC-Q101 qualification, 1500 W pulse rating, and class 2 whisker resistance - making it the only option among the three validated for under-hood automotive deployment with full lifecycle traceability.
Availability
1.5KE27CAHE3_B/C is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line surge suppression requiring stable component supply and long-term manufacturability.
Supply support for 1.5KE27CAHE3_B/C 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, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial automation, and infrastructure systems where failure modes must be eliminated through proven ruggedness and qualification rigor.
FAQ
What is the breakdown voltage range for 1.5KE27CAHE3_B/C?
The 1.5KE27CAHE3_B/C has a guaranteed breakdown voltage range of 25.7 V to 28.4 V at a test current of 1.0 mA, measured per JEDEC standard. This tight VBR window ensures consistent clamping behavior across production lots and supports reliable design margining for protected circuits. The value is confirmed in Vishay's official datasheet document 88301, revision 09-Aug-2022.
Is 1.5KE27CAHE3_B/C AEC-Q101 qualified?
Yes, the 1.5KE27CAHE3_B/C is AEC-Q101 qualified - explicitly stated in the "RATINGS AND CHARACTERISTICS CURVES" section of Vishay's datasheet (document 88301, note 2). The HE3 suffix denotes both RoHS compliance and AEC-Q101 qualification, covering devices from 1.5KE6.8CAHE3_B to 1.5KE220CAHE3_B. This makes 1.5KE27CAHE3_B/C suitable for automotive powertrain and body electronics.
What does the "CA" suffix mean in 1.5KE27CAHE3_B/C?
The "CA" suffix in 1.5KE27CAHE3_B/C indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical VBR, VC, and IPPM characteristics regardless of voltage polarity. Unlike unidirectional types (e.g., 1.5KE27A), it has no cathode band marking and is used where AC-coupled or floating DC lines require balanced protection.
What is the clamping voltage of 1.5KE27CAHE3_B/C at its rated peak pulse current?
The 1.5KE27CAHE3_B/C clamps to a maximum of 37.5 V at its rated peak pulse current of 40.0 A (10/1000 µs waveform), as specified in the Electrical Characteristics table of Vishay's datasheet. This clamping voltage directly determines the maximum stress imposed on downstream components and is a key parameter for validating system-level surge immunity compliance.
How does the thermal resistance of 1.5KE27CAHE3_B/C affect PCB layout?
The 1.5KE27CAHE3_B/C has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, meaning efficient heat conduction relies on direct thermal coupling to wide copper pours or internal ground planes. To maintain reliability during repetitive surges, PCB layout must provide ≥ 100 mm² of 2-oz copper connected to both leads - insufficient copper increases junction temperature and risks premature failure during sustained transient events.
1.5KE27CAHE3_B/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 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):
- 42A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE27CAHE3_B/C FAQ
1.How can I place an order for 1.5KE27CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE27CAHE3_B/C 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 1.5KE27CAHE3_B/C reliable?
The price and inventory of 1.5KE27CAHE3_B/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE27CAHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE27CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE27CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE27CAHE3_B/C?
1.5KE27CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE27CAHE3_B/C 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 1.5KE27CAHE3_B/C?
For technical support, including 1.5KE27CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE27CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE27CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE27CAHE3_B/C 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 1.5KE27CAHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE27CAHE3_B/C?
All 1.5KE27CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE27CAHE3_B/C, 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 1.5KE27CAHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE27CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE27CAHE3_B/C Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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