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Taiwan Semiconductor Corporation 1V5KE27CA
- Part No.:
- 1V5KE27CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE27CA.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:4,977
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Product details
Overview
1V5KE27CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with breakdown voltage 25.7–28.4 V at 1 mA test current, reverse stand-off voltage 23.1 V, clamping voltage 37.5 V at 40 A peak pulse current, and junction temperature range −55 °C to +175 °C. It protects power rails and I/O lines in industrial motor drives, PLC input modules, and AC/DC front-end circuits against ESD and lightning-induced surges.
For engineers reviewing the 1V5KE27CA datasheet, 1V5KE27CA pinout, 1V5KE27CA application, or 1V5KE27CA equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, fast response time (<1 ns), and compliance with IEC 61000-4-2/4-4/4-5 for system-level transient immunity.
Technical Context
The 1V5KE27CA operates as a voltage-clamped crowbar device during transients, entering avalanche conduction when reverse voltage exceeds its VBR (25.7–28.4 V). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at 23.1 V).
Designed for unidirectional and bidirectional use (CA suffix), it delivers symmetrical clamping in both polarities, supports 8.3 ms half-sine surge currents up to 200 A (uni-directional only), and maintains thermal stability across −55 °C to +175 °C operating range with 175 °C maximum junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise avalanche onset window for repeatable clamping threshold |
| VRWM | 23.1 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 37.5 V at 40 A - clamped voltage during 1.0 ms 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling per 1.0 ms waveform, enabling robust surge immunity |
| IR @ VRWM | <1 µA - ultra-low leakage preserves signal integrity and battery life in standby systems |
| TJ max | +175 °C - high-temperature operation supports under-hood automotive and industrial environments |
| Package | DO-201 - industry-standard axial leaded package with UL 94V-0 molding and tin-plated leads |
Pinout & Package
DO-201 package: axial-leaded, cylindrical glass-passivated body with cathode band marking for unidirectional variants; for 1V5KE27CA (bidirectional), polarity is non-directional - both terminals are functionally identical and symmetrically rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals conduct identically in either polarity - no orientation required during PCB placement |
| Leads (anode & cathode) | Thermal and electrical interface | 0.375 inch lead length supports 5 W steady-state dissipation at 75 °C ambient; tin-plated per J-STD-002 |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (1 ms) | Withstands IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 Ω source impedance) without degradation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >30 kV/ns) |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Industrial Motor Drive Protection | PLC Digital Input Protection |
|---|---|
Use Scenario: Suppresses inductive kickback from contactor coils and relay switching on 24 V DC control rails. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to clamp ±1 kV transients before reaching optocoupler or microcontroller GPIO. Use Value: Prevents latch-up and permanent damage to isolation barriers while maintaining <1 µA leakage during normal operation. | Use Scenario: Shields 24 V digital inputs from field-wiring ESD events and ground loop surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage protection stage ahead of series current-limiting resistor and Schmitt-trigger input buffer. Use Value: Clamps transients to ≤37.5 V within nanoseconds, ensuring input logic remains within safe VIH/VIL margins. |
| AC/DC Power Supply Front-End | Smart Meter Surge Protection |
Use Scenario: Installed across bridge rectifier output or bulk capacitor to absorb line surge energy from lightning-induced coupling. IC Role / Device Role / Timing Role: Secondary clamping device complementing MOV-based primary protection; handles residual fast transients missed by slower MOVs. Use Value: Limits voltage overshoot to 37.5 V during 1.0 ms surges, protecting downstream PWM controller ICs and gate drivers. | Use Scenario: Protects RS-485 communication ports and metering IC analog inputs from induced surges on utility-side wiring. IC Role / Device Role / Timing Role: Bidirectional TVS on differential bus lines (A/B) and supply rail, meeting IEC 61000-4-5 Annex D requirements. Use Value: Maintains signal integrity under 2 kV common-mode surge tests while adding <0.5 pF parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Lower PPPM (600 W), smaller SMB package (surface-mount), VBR = 26.7–29.5 V | Better suited for space-constrained PCBs; lower surge margin requires derating in high-energy environments | Select when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 3 |
| 1N6281A | Same die family, identical specs - JEDEC registered part number for 1V5KE27CA; DO-201, same markings and testing | No functional difference; used interchangeably in legacy designs and distributor stock | Preferred for drop-in replacement where JEDEC nomenclature is mandated in BOMs |
Compared with SMBJ24CA and 1N6281A, the 1V5KE27CA offers higher surge robustness (1500 W vs. 600 W) and axial-leaded mechanical stability for through-hole mounting, while 1N6281A provides identical performance with standardized JEDEC labeling.
Availability
1V5KE27CA is available at Aetrix Electronics and suitable for industrial motor drives, PLC digital input modules, and AC/DC power supply front-ends requiring stable component supply and long-lifecycle availability.
Supply support for 1V5KE27CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with ISO 9001 and IATF 16949 certified facilities.
The 1V5KE series was developed for high-reliability transient suppression in harsh industrial and infrastructure applications, emphasizing stable clamping, high-temperature endurance, and RoHS/halogen-free compliance.
FAQ
What does the 'CA' suffix mean in 1V5KE27CA?
The 'CA' suffix in 1V5KE27CA indicates a bidirectional configuration - the device provides symmetrical transient suppression in both forward and reverse directions, unlike unidirectional versions ending in 'A'. This enables placement without polarity concern across AC-coupled or differential signal paths, and is confirmed in TSC's datasheet Section "Devices for Bipolar Applications".
What is the clamping voltage of 1V5KE27CA at its rated peak pulse current?
The clamping voltage (VC) of 1V5KE27CA is 37.5 V at 40 A peak pulse current (IPPM) under the standard 1.0 ms exponential waveform. This value is measured per JEDEC test conditions and defines the maximum voltage seen by protected circuitry during a full-rated 1500 W transient event.
Can 1V5KE27CA be used in place of a unidirectional TVS like 1V5KE27A?
No - 1V5KE27CA is bidirectional and electrically symmetrical, while 1V5KE27A is unidirectional with a defined cathode. Substituting 1V5KE27CA for 1V5KE27A may cause unintended conduction in DC-biased circuits. The reverse leakage and forward voltage behavior differ fundamentally; always verify polarity requirements before replacement.
What is the maximum junction temperature rating for 1V5KE27CA?
The maximum junction temperature (TJMAX) for 1V5KE27CA is +175 °C, as specified in the Absolute Maximum Ratings table. This allows reliable operation in high-ambient environments such as enclosed industrial enclosures or near heat-generating components, provided PCB thermal design maintains junction-to-ambient thermal resistance within limits.
Is 1V5KE27CA compliant with RoHS and halogen-free standards?
Yes - 1V5KE27CA is RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. These certifications are explicitly stated in the Features section of the official TSC datasheet and verified via material declarations from Taiwan Semiconductor.
1V5KE27CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- 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:
- DO-201AD
1V5KE27CA FAQ
1.How can I place an order for 1V5KE27CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE27CA 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 1V5KE27CA reliable?
The price and inventory of 1V5KE27CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE27CA is usually 5 days.
3.What payment methods are accepted for 1V5KE27CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE27CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE27CA?
1V5KE27CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE27CA 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 1V5KE27CA?
For technical support, including 1V5KE27CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE27CA requirements.
6.How does Aetrix verify that 1V5KE27CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE27CA 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 1V5KE27CA meets industry standards.
7.What is the process for return or replacement of 1V5KE27CA?
All 1V5KE27CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE27CA, 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 1V5KE27CA part is unused and in its original packaging.
Return procedure for 1V5KE27CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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