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Taiwan Semiconductor Corporation 1.5KE250CA
- Part No.:
- 1.5KE250CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE250CA.pdf
- Description:
- 1500W, 250V, 5%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:7,743
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Product details
Overview
1.5KE250CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 250V, clamping voltage 344V at 4.5A peak pulse current, and working stand-off voltage 202V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE250CA datasheet, 1.5KE250CA pinout, 1.5KE250CA application, or 1.5KE250CA equivalent, this page delivers verified electrical specs, polarity marking, thermal derating behavior, AEC-Q101 qualification status, and real-world clamping performance under 10/1000μs surge conditions.
Technical Context
The 1.5KE250CA operates as a bidirectional avalanche diode, symmetrically clamping positive and negative transients above ±237V (min VBR) and below ±263V (max VBR) at 1mA test current. Its low dynamic impedance ensures rapid voltage limiting during fast EFT events.
It meets ISO 7637-2 immunity requirements for automotive electronics and supports unidirectional or bidirectional configurations via CA suffix. Junction temperature range spans −55°C to +175°C, enabling use in under-hood environments without thermal derating below rated power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 237V / 263V - Ensures reliable conduction onset across production lot and temperature range |
| VWM | 202V - Maximum continuous DC or RMS voltage before leakage exceeds 1µA |
| VC @ IPP | 344V @ 4.5A - Clamped voltage during 10/1000μs surge; defines worst-case rail overvoltage seen by protected IC |
| PPK | 1500W - Peak pulse power handling per single non-repetitive 10/1000μs waveform |
| TJ max | +175°C - Enables placement near high-power components without thermal shutdown |
| Package | DO-201 - Industry-standard axial leaded package with UL 94V-0 molding compound and tin-plated leads |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; 1.5KE250CA is bidirectional and marked with part-specific code (no polarity band). 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 | Transient return path (bidirectional) | Connects to protected line; conducts during negative surges relative to cathode reference |
| Cathode | Transient return path (bidirectional) | Connects to protected line; conducts during positive surges relative to anode reference |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or floating DC busses without external polarity routing |
| 1500W surge rating | Withstands automotive load-dump and inductive switching spikes without degradation |
| Fast response time | <5ns turn-on ensures suppression before sensitive downstream circuitry experiences overvoltage stress |
| Low leakage current | <1µA at 202V enables use on always-on battery rails without excessive quiescent drain |
| AEC-Q101 qualification | Validates robustness for automotive powertrain, body control, and ADAS modules requiring long-term field reliability |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 24V/48V vehicle power networks from load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient excursions to ≤344V, preventing damage to 36V-rated input stages and maintaining system uptime. | Use Scenario: Safeguarding PLC I/O modules connected to solenoid valves and contactors. IC Role / Device Role / Timing Role: Bidirectional shunt device absorbing inductive kickback energy during coil de-energization. Use Value: Eliminates need for separate flyback diodes while meeting IEC 61000-4-4 EFT immunity requirements. |
| LED Streetlight Drivers | Renewable Energy Inverters |
Use Scenario: Shielding constant-current LED drivers from lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Secondary-level TVS after MOV-based front-end filtering, handling residual fast transients. Use Value: Clamps sub-microsecond EFT pulses to safe levels, preserving driver MOSFET gate oxide integrity. | Use Scenario: Protecting MPPT controller inputs from grid-side surges in solar string inverters. IC Role / Device Role / Timing Role: High-energy clamping element on PV input bus, rated for repeated 1500W pulses. Use Value: Maintains >202V operating margin while surviving 10kV/10/1000μs surges per IEC 61000-4-5 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ250CA | Same DO-214AC (SMA) package; lower PPK (400W); VBR min/max = 237–263V; VC = 410V @ 3.7A | Lower surge capacity limits use to consumer-grade or low-energy industrial signals | Select when board space constraints favor surface-mount and surge energy is ≤400W |
| ON Semiconductor 1.5SMC250CA | Same DO-214AB (SMC) package; identical PPK (1500W); VBR min/max = 237–263V; VC = 344V @ 4.5A | Identical clamping performance but larger footprint; higher thermal mass improves repetitive surge handling | Select when higher thermal inertia is needed for frequent transient exposure or elevated ambient temperatures |
Compared with SMAJ250CA and 1.5SMC250CA, the 1.5KE250CA offers identical electrical clamping and surge rating in a through-hole DO-201 package-ideal for high-reliability automotive harness connections and legacy PCB designs where axial mounting is preferred.
Availability
1.5KE250CA is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, LED streetlight drivers, and renewable energy inverter protection requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE250CA 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 global distribution and AEC-Q101 qualified product lines.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing robustness, repeatable clamping, and compliance with ISO 7637-2 and IEC 61000-4-5 standards.
FAQ
What is the maximum clamping voltage of the 1.5KE250CA under standard test conditions?
The 1.5KE250CA has a maximum clamping voltage (VC) of 344V at 4.5A peak pulse current under the 10/1000μs waveform. This value is measured per JEDEC standards and represents the upper limit of voltage imposed on the protected circuit during a full-rated surge event. The 1.5KE250CA maintains this clamping performance across its specified junction temperature range.
Is the 1.5KE250CA suitable for automotive applications?
Yes, the 1.5KE250CA is AEC-Q101 qualified and explicitly designed for automotive use. It meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements, making it appropriate for protecting ECUs, body control modules, and lighting systems. The 1.5KE250CA's −55°C to +175°C operating range supports under-hood deployment without derating.
How does the bidirectional configuration of the 1.5KE250CA affect its circuit implementation?
The 1.5KE250CA's bidirectional structure allows it to clamp both positive- and negative-going transients symmetrically, eliminating the need for polarity-aware layout. It connects directly across the protected line and ground (or between differential lines), simplifying design versus unidirectional TVS diodes that require correct anode/cathode orientation. The 1.5KE250CA has no cathode band marking, confirming its bidirectional function.
What is the working stand-off voltage (VWM) of the 1.5KE250CA, and why is it important?
The 1.5KE250CA has a working stand-off voltage (VWM) of 202V, meaning it remains in high-impedance state up to this DC or RMS voltage with leakage <1µA. This parameter ensures minimal power loss and no false triggering during normal operation, while still allowing fast transition into conduction when transients exceed the breakdown threshold. Selecting a 1.5KE250CA with appropriate VWM avoids unnecessary stress on upstream fuses or regulators.
Does the 1.5KE250CA require heatsinking for full 1500W surge capability?
No, the 1.5KE250CA delivers its full 1500W peak pulse power rating without external heatsinking under single-pulse conditions at TA = 25°C. However, thermal derating applies above 25°C ambient per Fig.2 in the datasheet; for repetitive surges or high-temperature environments, PCB copper area (e.g., 0.6" × 0.6" pad) is recommended to sustain performance. The 1.5KE250CA's DO-201 package inherently limits continuous power dissipation to 5W at TL = 75°C.
1.5KE250CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 214V
- Voltage - Breakdown (Min):
- 237V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 4.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE250CA FAQ
1.How can I place an order for 1.5KE250CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE250CA 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 1.5KE250CA reliable?
The price and inventory of 1.5KE250CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE250CA is usually 5 days.
3.What payment methods are accepted for 1.5KE250CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE250CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE250CA?
1.5KE250CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE250CA 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 1.5KE250CA?
For technical support, including 1.5KE250CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE250CA requirements.
6.How does Aetrix verify that 1.5KE250CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE250CA 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 1.5KE250CA meets industry standards.
7.What is the process for return or replacement of 1.5KE250CA?
All 1.5KE250CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE250CA, 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 1.5KE250CA part is unused and in its original packaging.
Return procedure for 1.5KE250CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE250CA Tags
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