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Taiwan Semiconductor Corporation 1V5KE27A
- Part No.:
- 1V5KE27A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE27A.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:8,813
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Product details
Overview
1V5KE27A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with breakdown voltage 25.7–28.4 V at 1 mA test current, clamping voltage 37.5 V at 40 A peak pulse current, and reverse stand-off voltage 23.1 V. It protects power rails and I/O lines against ESD, lightning-induced surges, and inductive switching transients in industrial control and automotive subsystems.
For engineers reviewing the 1V5KE27A datasheet, 1V5KE27A pinout, 1V5KE27A application, or 1V5KE27A equivalent, key selection criteria include its 37.5 V clamping performance at 40 A, 23.1 V maximum working voltage, DO-201 mechanical compatibility, low leakage (<1 µA above 10 V), and 175 °C junction temperature rating.
Technical Context
The 1V5KE27A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 25.7–28.4 V breakdown range. Its glass-passivated junction ensures stable surge response and low incremental surge resistance, enabling consistent clamping during 10/1000 µs transients.
Designed for single-pulse suppression per JEDEC standards, it sustains 1500 W peak pulse power at 1 ms, with thermal derating to 5 W continuous dissipation at 75 °C ambient and 200 A non-repetitive forward surge capability-critical for protecting downstream rectifiers and regulators in DC power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 25.7 V / 28.4 V at 1 mA - defines reliable avalanche initiation threshold across production lot |
| VRWM | 23.1 V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 37.5 V at 40 A - clamping voltage limiting protected circuit stress during worst-case surge |
| PPPM | 1500 W at 1 ms - peak transient energy absorption capacity per JEDEC standard |
| IR @ VRWM | <1 µA - negligible standby leakage, preserving battery life and signal integrity |
| TJ max | 175 °C - enables operation in high-temperature environments like engine compartments |
| 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 epoxy-molded body with cathode band marking polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line; conducts avalanche current when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable breakdown voltage and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (1 ms) | Handles high-energy transients such as ISO 7637-2 Pulse 5a without degradation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., EFT bursts) |
| Fast response time (<1 ps) | Clamps before sensitive ICs experience overvoltage damage |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and environmental requirements for industrial and automotive use |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O against inductive kickback from relay coils and solenoid loads. IC Role / Device Role: Unidirectional TVS placed between MCU GPIO and load switch output. Use Value: Clamps 37.5 V at 40 A, preventing latch-up or permanent damage to 3.3 V/5 V logic interfaces. | Use Scenario: Surge protection on LIN bus lines and sensor supply rails exposed to load dump and jump-start conditions. IC Role / Device Role: Standoff voltage 23.1 V aligns with 24 V system nominal, allowing safe operation during 14 V–16 V normal operation. Use Value: Withstands 1500 W pulses while maintaining sub-1 µA leakage, avoiding false wake-ups or battery drain. |
| DC Power Supply Inputs | LED Driver Circuits |
Use Scenario: Input-stage protection for 24 V industrial SMPS against lightning-induced surges on AC/DC front-ends. IC Role / Device Role: Primary-level TVS placed after bridge rectifier and before bulk capacitor. Use Value: 175 °C max junction temperature supports placement near hot components without thermal derating loss. | Use Scenario: Protection of constant-current LED driver ICs from voltage spikes caused by cable disconnect events. IC Role / Device Role: Parallel-connected TVS across LED string terminals to clamp reverse transients. Use Value: Low clamping voltage (37.5 V) prevents overvoltage stress on 36 V-rated LED arrays while preserving efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower peak power (600 W), SMC package, VRWM = 24 V, VC = 38.9 V @ 15.4 A | Not suitable for 1500 W surge events; limited to lower-energy transients like IEC 61000-4-2 ESD | Select when board space is constrained and surge energy is ≤600 W |
| 1N6281A | Same manufacturer, identical electrical specs and DO-201 package; obsolete part number superseded by 1V5KE27A | No functional difference; direct replacement per Taiwan Semiconductor documentation | Prefer 1V5KE27A for new designs due to active status and updated manufacturing process |
Compared with SMBJ24A and 1N6281A, the 1V5KE27A delivers higher surge robustness (1500 W vs. 600 W) and active lifecycle support, while maintaining identical form-factor and clamping behavior as its predecessor-making it optimal for industrial power input and automotive load-protection circuits requiring proven reliability.
Availability
1V5KE27A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and DC power supply inputs requiring stable component supply, long-term manufacturability, and RoHS-compliant surge protection.
Supply support for 1V5KE27A 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 for industrial and automotive markets.
The 1V5KE series was developed specifically for high-energy transient suppression in harsh-environment power systems, emphasizing rugged packaging, tight parameter distribution, and extended temperature operation up to 175 °C.
FAQ
What is the breakdown voltage range of the 1V5KE27A?
The 1V5KE27A has a specified breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1 mA test current, measured per JEDEC standards. This range ensures consistent avalanche triggering across temperature and production lots. The 1V5KE27A's tight VBR tolerance supports reliable overvoltage protection without premature conduction during normal operation.
Is the 1V5KE27A unidirectional or bidirectional?
1V5KE27A is a unidirectional TVS diode, indicated by the absence of "C" suffix (which denotes bidirectional versions like 1V5KE27CA). Its cathode band marks the terminal that connects to the protected line, while the anode connects to ground. This configuration provides asymmetric clamping optimized for DC power rail and signal-line protection where polarity is fixed.
What is the clamping voltage of the 1V5KE27A at rated peak current?
The 1V5KE27A clamps to a maximum of 37.5 V at 40 A peak pulse current (IPPM), measured under 10/1000 µs waveform conditions. This clamping voltage defines the upper voltage limit imposed on protected circuitry during surge events. The 1V5KE27A's low clamping ratio (VC/VBR ≈ 1.38) reflects efficient energy diversion with minimal voltage overshoot.
Can the 1V5KE27A be used in automotive applications?
Yes, the 1V5KE27A is suitable for automotive applications including body control modules and lighting drivers, thanks to its 175 °C maximum junction temperature, DO-201 package with UL 94V-0 flammability rating, and compliance with ESD and EFT immunity requirements. The 1V5KE27A's 23.1 V reverse stand-off voltage aligns with 24 V system tolerances, supporting robust operation during load dump and jump-start transients.
What packaging options are available for the 1V5KE27A?
The 1V5KE27A is supplied in DO-201 package with two standard packing formats: 1,250 units per tape-and-reel (order code 1V5KE27A) and 500 units per ammo box (order code 1V5KE27A0G). Both variants feature pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance, ensuring reliable assembly in automated and manual processes.
1V5KE27A 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:
- 1
- Bidirectional Channels:
- -
- 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
1V5KE27A FAQ
1.How can I place an order for 1V5KE27A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE27A 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 1V5KE27A reliable?
The price and inventory of 1V5KE27A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE27A is usually 5 days.
3.What payment methods are accepted for 1V5KE27A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE27A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE27A?
1V5KE27A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE27A 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 1V5KE27A?
For technical support, including 1V5KE27A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE27A requirements.
6.How does Aetrix verify that 1V5KE27A is sourced from the original manufacturer or authorized distributors?
All 1V5KE27A 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 1V5KE27A meets industry standards.
7.What is the process for return or replacement of 1V5KE27A?
All 1V5KE27A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE27A, 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 1V5KE27A part is unused and in its original packaging.
Return procedure for 1V5KE27A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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