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Vishay General Semiconductor - Diodes Division 1.5KE27CA-E3/54
- Part No.:
- 1.5KE27CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE27CA-E3/54.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,008
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Product details
Overview
1.5KE27CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 37.5 V at 40 A, and operates across –55 °C to +175 °C junction temperature. It protects MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes in industrial and automotive systems.
For engineers reviewing the 1.5KE27CA-E3/54 datasheet, 1.5KE27CA-E3/54 pinout, 1.5KE27CA-E3/54 application, or 1.5KE27CA-E3/54 equivalent, this page delivers verified electrical specs, JEDEC 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and AEC-Q101-qualified alternatives - all critical for robust overvoltage design validation.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its bidirectional structure enables symmetrical clamping in AC-coupled or floating signal paths without polarity concerns, unlike unidirectional variants requiring cathode orientation.
Rated for 1500 W peak pulse power with 10/1000 µs waveform and 0.01% duty cycle, it sustains repetitive surges when thermally managed per its RθJA = 75 °C/W and RθJL = 15.4 °C/W ratings. Standoff voltage is 23.1 V, with <1 µA leakage at VWM, ensuring minimal loading on protected circuits during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines reliable conduction onset under transient stress |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 37.5 V at 40 A - clamped voltage during full-rated 1500 W surge, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - peak surge energy absorption capability for lightning/inductive spike suppression |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial environments without derating loss |
| Package | JEDEC 1.5KE - axial-leaded, epoxy-molded case rated UL 94 V-0, compatible with wave/solder-reflow |
| Leakage @ VWM | <1 µA - negligible standby current draw, preserving battery life and signal integrity |
Pinout & Package
1.5KE27CA-E3/54 is housed in the standard JEDEC 1.5KE axial-leaded package (Case Style 1.5KE), featuring matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. As a bidirectional device, it has no polarity marking - both terminals are functionally identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Identical terminals conduct equally in either direction; no cathode band or polarity dependency |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 1500 W peak pulse rating | Handles IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without degradation |
| Sub-nanosecond response | Clamps transients within 1 ns - faster than MOVs or polymer-based protectors |
| AEC-Q101 qualified option | 1.5KE27CAHE3_B variant available for automotive-grade deployment (not applicable to -E3/54) |
| UL 94 V-0 molding compound | Self-extinguishing epoxy meets fire-safety requirements for enclosed industrial equipment |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protecting gate drivers and feedback sensors from inductive kickback during IGBT/MOSFET switching in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional TVS placed across DC bus or signal inputs to clamp ±30 V transients before they reach precision analog front-ends. Use Value: Prevents latch-up or permanent damage to isolated amplifiers and microcontrollers exposed to >1 kV fast-rising edges. |
Use Scenario: Shielding LIN bus transceivers and door module MCUs from load dump and jump-start surges in 12 V vehicle networks. IC Role / Device Role / Timing Role: Standoff-rated TVS on power rails and data lines, absorbing 1500 W pulses while maintaining <23.1 V quiescent voltage. Use Value: Eliminates need for redundant Zener+capacitor networks, reducing BOM count and PCB area by 40% vs. discrete solutions. |
| Telecom Power Feeds | Consumer Appliance Control Boards |
|
Use Scenario: Safeguarding PoE-powered Ethernet switches and remote PHYs against induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional clamping element on secondary-side DC outputs, activated only during >25.7 V transients. Use Value: Maintains signal integrity on 48 V rails with <1 µA leakage, avoiding false triggering or standby power waste. |
Use Scenario: Securing microcontroller reset lines and touch-sensor inputs in washing machines and HVAC controllers exposed to ESD and relay bounce. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed directly at connector entry points to shunt fast transients. Use Value: Achieves IEC 61000-4-2 Level 4 (8 kV contact) immunity without degrading 10 kHz capacitive sensing response. |
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 600 W PPPM, SMC package (surface-mount), VC = 42.1 V @ 14.3 A | Better suited for space-constrained PCBs; lower surge capacity limits use to Class II IEC 61000-4-5 | Select when board real estate is critical and peak surge energy rarely exceeds 600 W |
| 1.5KE27CAHE3_B | Same electrical specs, but AEC-Q101 qualified and JESD 201 Class 2 whisker-tested | Approved for automotive powertrain and chassis modules; requires traceable lot documentation | Choose for OEM automotive programs requiring PPAP compliance and extended temperature validation |
Compared with 1.5KE27CA-E3/54, SMBJ26CA trades surge margin for compactness and reflow compatibility, while 1.5KE27CAHE3_B retains identical protection performance with certified automotive reliability - enabling direct substitution only where qualification and sourcing traceability are mandated.
Availability
1.5KE27CA-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, telecom power feeds, and consumer appliance control boards requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE27CA-E3/54 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, high-power, and automotive-qualified components.
The 1.5KE series was developed specifically for robust, high-energy transient suppression in harsh environments - targeting applications where failure modes include lightning strikes, inductive switching, and load dump events.
FAQ
What is the clamping voltage of the 1.5KE27CA-E3/54 under full-rated surge conditions?
The 1.5KE27CA-E3/54 clamps to 37.5 V at its peak pulse current of 40 A (10/1000 µs waveform). This value is measured per JEDEC standards and reflects the maximum voltage imposed on protected circuitry during a 1500 W transient event. The low clamping ratio (VC/VBR ≈ 1.39) ensures effective protection of 3.3 V and 5 V logic interfaces without overstressing downstream components.
Is the 1.5KE27CA-E3/54 RoHS compliant and lead-free?
Yes, the 1.5KE27CA-E3/54 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 7a. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the epoxy molding compound is halogen-free and UL 94 V-0 rated. No lead or heavy metals exceed EU-mandated thresholds.
Can the 1.5KE27CA-E3/54 be used in automotive applications?
The 1.5KE27CA-E3/54 is commercial-grade and not AEC-Q101 qualified. For automotive use, Vishay offers the 1.5KE27CAHE3_B variant - identical electrical specs but with full AEC-Q101 stress testing, JESD 201 Class 2 whisker resistance, and PPAP-ready documentation. Use 1.5KE27CA-E3/54 only in non-safety-critical aftermarket or industrial automotive subsystems.
What is the thermal resistance and how does it affect layout for the 1.5KE27CA-E3/54?
The 1.5KE27CA-E3/54 has RθJA = 75 °C/W (junction-to-ambient) and RθJL = 15.4 °C/W (junction-to-lead). To sustain repetitive surges, PCB copper pour under the leads and short, wide traces are essential. Derating begins above 25 °C ambient - at 75 °C lead temperature, power dissipation drops to 6.5 W. Thermal vias and heatsinking pads significantly improve sustained pulse handling.
How does the bidirectional nature of the 1.5KE27CA-E3/54 impact circuit placement?
Because the 1.5KE27CA-E3/54 is bidirectional, it has no anode/cathode distinction and no polarity marking. It can be placed across AC-coupled lines (e.g., RS-485, CAN, audio), floating power rails, or differential signal pairs without orientation constraints. This eliminates assembly errors and simplifies layout versus unidirectional TVS diodes, which require strict cathode alignment relative to ground or supply.
1.5KE27CA-E3/54 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):
- 40A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE27CA-E3/54 FAQ
1.How can I place an order for 1.5KE27CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE27CA-E3/54 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 1.5KE27CA-E3/54 reliable?
The price and inventory of 1.5KE27CA-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE27CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE27CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE27CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE27CA-E3/54?
1.5KE27CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE27CA-E3/54 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 1.5KE27CA-E3/54?
For technical support, including 1.5KE27CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE27CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE27CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE27CA-E3/54 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 1.5KE27CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE27CA-E3/54?
All 1.5KE27CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE27CA-E3/54, 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 1.5KE27CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE27CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE27CA-E3/54 Tags
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