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Taiwan Semiconductor Corporation 1.5KE250
- Part No.:
- 1.5KE250
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE250.pdf
- Description:
- 1500W, 250V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:3,850
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Product details
Overview
1.5KE250 from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 250 V, working stand-off voltage 202 V, clamping voltage 360 V at 4.3 A peak impulse current, and junction temperature range −55 °C to +175 °C. It protects automotive power electronics, industrial motor drives, and DC power supplies against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE250 datasheet, 1.5KE250 pinout, 1.5KE250 application, or 1.5KE250 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, low dynamic impedance, AEC-Q101 qualification availability, thermal derating behavior above 25 °C, and compatibility with lead-free reflow profiles per J-STD-002.
Technical Context
The 1.5KE250 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 225–275 V breakdown range at 1 mA test current. Its 360 V clamping voltage limits energy dissipation during 10/1000 μs transients up to 1500 W peak power, with <1.0 ps response time from 0 V to VBR.
Thermal design relies on its 175 °C maximum junction temperature and 5 W steady-state power dissipation at 75 °C lead temperature (0.375″ copper pad). It meets ISO 7637-2 immunity requirements for automotive load-dump and inductive switching events without external biasing or control circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1 mA | 225–275 V: Ensures reliable turn-on before system overvoltage damages downstream ICs or MOSFETs. |
| VWM | 202 V: Maximum continuous reverse operating voltage; must exceed normal DC rail by ≥10% to avoid leakage-induced heating. |
| VC @ IPP = 4.3 A | 360 V: Clamped voltage during full 1500 W surge; defines worst-case stress on protected circuitry. |
| PPK | 1500 W: Peak pulse power handling at TA = 25 °C; derates linearly above ambient per Fig.2. |
| IPP | 4.3 A: Peak impulse current at 10/1000 μs waveform; determines minimum trace width and PCB layout margin. |
| TJMAX | +175 °C: Enables operation in under-hood automotive or high-temperature industrial enclosures without forced cooling. |
| Package | DO-201: Axial-leaded through-hole package with 0.090 g mass; compatible with wave soldering and manual assembly. |
Pinout & Package
DO-201 package: axial-leaded, molded epoxy case meeting UL 94V-0 flammability rating; cathode indicated by band; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; establishes reference for clamping action. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., battery rail); absorbs transient energy into ground path. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W surge capability | Handles ISO 7637-2 Pulse 5a (load dump) up to 120 V without failure at TA ≤ 25 °C. |
| Clamping voltage 360 V | Limits voltage overshoot across protected MOSFET gate-source or IC supply pins during fast transients. |
| Response time <1.0 ps | Activates before ESD or lightning-induced edges propagate through board traces, minimizing coupled noise. |
| AEC-Q101 qualified option | Available as 1.5KE250H variant for automotive applications requiring stress-tested reliability validation. |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for consumer, industrial, and automotive end equipment with strict material restrictions. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs from load-dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input. Use Value: Clamps 120 V/1500 W pulses to ≤360 V within 1 ps, preventing overvoltage shutdown or latch-up of buck controller ICs. |
Use Scenario: Safeguarding gate drivers and microcontrollers in variable-frequency drives exposed to inductive kickback. IC Role / Device Role / Timing Role: TVS connected across IGBT collector-emitter or gate-source terminals. Use Value: Limits voltage spikes to 360 V during 4.3 A surges, avoiding gate oxide rupture or driver latch-up during motor deceleration. |
| DC Power Supply Input Stage | Lighting System Surge Protection |
|
Use Scenario: Front-end protection for 200–250 V DC input supplies in telecom rectifiers or solar inverters. IC Role / Device Role / Timing Role: Primary surge clamp on bulk DC bus prior to filtering and regulation stages. Use Value: Absorbs 1500 W transients while maintaining 202 V working stand-off, enabling stable operation under brownout and surge conditions. |
Use Scenario: Transient suppression on LED driver inputs subjected to ESD and lightning-induced surges in outdoor signage. IC Role / Device Role / Timing Role: TVS mounted at AC/DC adapter input or DC bus entry point. Use Value: Meets IEC 61000-4-2/4-4 immunity standards with sub-1 ps response, preserving LED string integrity and driver IC lifetime. |
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 SMAJ250A | Same 250 V nominal, DO-214AC (SMA) package, 400 W peak power, lower clamping voltage (356 V), higher leakage (5 µA @ 202 V). | Lower surge rating suits consumer-grade 24 V systems; surface-mount form factor reduces PCB area but requires reflow profile control. | Select when space-constrained layouts or automated SMT assembly outweigh need for 1500 W robustness. |
| ON Semiconductor 1N6298 | 130 V nominal, DO-201, 1500 W, 187 V clamping; not voltage-compatible with 1.5KE250's 250 V system. | Designed for 110–130 V DC rails (e.g., legacy industrial controls); cannot substitute directly without redesigning voltage margins. | Use only in systems where 130 V standoff and 187 V clamping meet functional safety thresholds. |
Compared with 1.5KE250, SMAJ250A offers smaller footprint and tighter clamping but sacrifices 65% surge energy handling; 1N6298 provides identical power rating but targets lower-voltage systems, requiring full electrical revalidation if substituted.
Availability
1.5KE250 is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive control, and DC power supply input stage applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1.5KE250 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The 1.5KE series was developed to deliver high-energy transient suppression for harsh-environment applications, emphasizing AEC-Q101 qualification, wide temperature operation, and standardized DO-201 packaging for mechanical and thermal reliability.
FAQ
What is the maximum clamping voltage of the 1.5KE250 under standard test conditions?
The 1.5KE250 exhibits a maximum clamping voltage (VC) of 360 V when subjected to a 10/1000 μs surge waveform at 4.3 A peak impulse current (IPP). This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The 1.5KE250 maintains this clamping performance across its specified operating temperature range.
Is the 1.5KE250 available in an AEC-Q101 qualified version?
Yes, the AEC-Q101 qualified version of the 1.5KE250 is designated as 1.5KE250H. This variant undergoes accelerated stress testing per the AEC-Q101 standard for discrete semiconductors and is intended for automotive applications requiring validated reliability. The 1.5KE250H shares identical electrical parameters and DO-201 packaging with the base 1.5KE250 but includes full qualification documentation and traceability.
What is the working stand-off voltage (VWM) of the 1.5KE250, and why does it matter?
The 1.5KE250 has a working stand-off voltage (VWM) of 202 V, representing the maximum continuous reverse voltage it can block without significant leakage current. This parameter ensures the device remains non-conductive during normal operation while allowing sufficient margin below the 225–275 V breakdown range. Exceeding VWM risks elevated leakage and thermal runaway; thus, system DC rails must be designed to stay ≤202 V under all steady-state conditions.
How does the 1.5KE250 handle thermal derating above 25 °C ambient temperature?
The 1.5KE250's peak pulse power rating of 1500 W is specified at TA = 25 °C and derates linearly with increasing ambient temperature, per the Pulse Derating Curve (Fig.2) in the official datasheet. At 75 °C ambient, its usable peak power drops to approximately 750 W. Engineers must apply this derating when designing for high-temperature environments such as engine compartments or enclosed industrial cabinets to avoid thermal failure during repeated surge events.
What packaging and marking information applies to the 1.5KE250?
The 1.5KE250 is supplied in DO-201 axial-leaded package with pure tin-plated leads compliant with J-STD-002 solderability. Marking includes part number "1.5KE250", green compound indicator "G", date code "YWW", and factory code "F"; cathode polarity is denoted by a band. Standard packing is 1,250 units per tape-and-reel (1.5KE250) or 500 per ammo box (1.5KE250A0G).
1.5KE250 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 202V
- Voltage - Breakdown (Min):
- 225V
- Voltage - Clamping (Max) @ Ipp:
- 360V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- 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
1.5KE250 FAQ
1.How can I place an order for 1.5KE250 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE250 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 1.5KE250 reliable?
The price and inventory of 1.5KE250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE250 is usually 5 days.
3.What payment methods are accepted for 1.5KE250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE250?
1.5KE250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE250 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 1.5KE250?
For technical support, including 1.5KE250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE250 requirements.
6.How does Aetrix verify that 1.5KE250 is sourced from the original manufacturer or authorized distributors?
All 1.5KE250 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 1.5KE250 meets industry standards.
7.What is the process for return or replacement of 1.5KE250?
All 1.5KE250 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE250, 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 1.5KE250 part is unused and in its original packaging.
Return procedure for 1.5KE250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE250 Tags
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