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Diodes Incorporated 1.5KE250CA-T
- Part No.:
- 1.5KE250CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE250CA-T.pdf
- Description:
- TVS DIODE 214VWM 344VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,868
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Product details
Overview
1.5KE250CA-T from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal interfaces. It features a 214V reverse standoff voltage, 237–263V breakdown range at 1mA, 344V max clamping voltage at 5A peak pulse current, and operates from –55°C to +175°C. It is used in industrial power supplies to protect rectifier outputs against lightning-induced surges.
For engineers reviewing the 1.5KE250CA-T datasheet, 1.5KE250CA-T pinout, 1.5KE250CA-T application, or 1.5KE250CA-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VMAX, peak pulse current capability under IEC 61000-4-5 waveform 1.2/50μs–8/20μs combination, thermal derating above +25°C, and DO-201 axial lead compatibility with through-hole PCB layouts.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to achieve fast sub-nanosecond response to transients and stable clamping performance across temperature. Its symmetrical avalanche structure enables identical clamping in both polarities without external polarity management.
The device is rated for 1500W non-repetitive peak pulse power (tP = 1.0 ms), 5.0W steady-state dissipation at 75°C lead temperature, and withstands 200A forward surge current (8.3 ms half-sine). Its voltage temperature coefficient of +0.110%/°C ensures predictable drift in high-temperature environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W at tP = 1.0 ms - sustains single high-energy surges per IEC 61000-4-5 Level 4 without failure |
| Reverse Standoff Voltage (VRWM) | 214V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 237–263V @ 1mA - tight 10.5% tolerance ensures consistent turn-on across production lots |
| Max Clamping Voltage (VC) | 344V @ IPP = 5A - defines upper voltage limit imposed on protected circuit during surge |
| Peak Pulse Current (IPP) | 5.0A - derived from 1500W / 344V; actual surge handling depends on waveform shape and duration |
| Operating Temperature | –55°C to +175°C - supports under-hood automotive and industrial motor drive applications |
| Leakage Current (IR) | ≤5.0μA @ VR = 214V - minimal standby power loss and no false triggering in high-impedance circuits |
Pinout & Package
Package: DO-201 axial-leaded glass-passivated epoxy package (UL 94V-0 rated), 25.4 mm overall length, 8.5–9.53 mm body diameter, 4.8–5.21 mm lead spacing. Weight: 1.12 g. Marking: "1.5KE250CA" only (bidirectional, no polarity band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during negative transient | Connected to line or signal net requiring bidirectional clamping; no polarity dependency |
| Cathode | Current entry point during positive transient | Same physical terminal as Anode in bidirectional configuration; symmetric conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enables stable avalanche characteristics and long-term reliability under repeated surge stress |
| Bidirectional construction | Eliminates need for polarity-aware placement; protects AC-coupled or floating signal paths |
| RoHS-compliant, halogen-free finish | Meets IPC-1752A material declaration requirements for green electronics manufacturing |
| 1.12g mass & axial leads | Compatible with standard wave-soldering fixtures and manual rework using tweezers or pliers |
| Moisture sensitivity Level 1 | No dry-pack or baking required prior to assembly; simplifies SMT line integration planning |
Applications
| Industrial Power Supply Protection | AC Motor Drive DC Bus Clamp |
|---|---|
|
Use Scenario: Installed across bulk capacitor terminals in 3-phase rectifier outputs to absorb regenerative energy spikes and lightning-induced surges. IC Role / Device Role / Timing Role: Voltage-clamping element that diverts >95% of transient current away from downstream electrolytic capacitors and gate drivers. Use Value: Prevents capacitor venting and IGBT short-circuit failure by limiting bus overvoltage to ≤344V during 5kV/10kA IEC 61000-4-5 tests. |
Use Scenario: Mounted between DC+ and DC– rails in variable-frequency drives to clamp commutation spikes from inductive load switching. IC Role / Device Role / Timing Role: Fast-response shunt protector that activates within <1 ns to clamp voltage overshoot before IGBT desaturation detection triggers shutdown. Use Value: Extends IGBT lifetime by reducing dv/dt stress and eliminating repetitive overvoltage events exceeding 120% of rail rating. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Placed on primary side of isolated DC/DC converters powering PoE midspans to suppress induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Primary-stage transient suppressor that absorbs energy before it reaches isolation barrier and secondary-side regulation ICs. Use Value: Maintains converter uptime by preventing latch-up or burnout of PWM controllers during outdoor cabinet exposure to indirect lightning. |
Use Scenario: Applied across photovoltaic string inputs of central inverters to clamp voltage reversals caused by partial shading or ground faults. IC Role / Device Role / Timing Role: Bidirectional clamping device that limits reverse-bias stress on MPPT controller MOSFETs during rapid irradiance changes. Use Value: Avoids premature degradation of silicon carbide switches by holding reverse voltage below 250V during fault recovery cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250CA | Lower peak power (600W), smaller SMB package, 344V clamping same, 3.5A IPP | Not suitable for 1500W IEC 61000-4-5 Level 4; limited to Level 2–3 in compact designs | Select when board space is constrained and surge threat level is defined as ≤1kV/500A |
| 1.5SMC250CA | Same 1500W rating and 344V clamping, but SMC surface-mount package (DO-214AB) | Requires re-layout for SMT assembly; lacks axial lead mechanical robustness for high-vibration environments | Select when automated pick-and-place is mandatory and thermal pad access allows 75°C TL derating |
Compared with SMBJ250CA and 1.5SMC250CA, the 1.5KE250CA-T provides proven axial-leaded mechanical stability for high-reliability through-hole power systems while maintaining identical clamping performance-making it optimal where serviceability, vibration resistance, and legacy footprint compatibility are prioritized.
Availability
1.5KE250CA-T is available at Aetrix Electronics and suitable for industrial power supply protection, AC motor drive DC bus clamp, and renewable energy inverter DC link applications requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE250CA-T 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal devices, with design centers across Asia, Europe, and the US, serving industrial, computing, and communications markets.
The 1.5KE series was engineered for high-energy transient suppression in legacy and new industrial power systems, emphasizing rugged DO-201 packaging, wide temperature operation, and repeatable clamping under repetitive surge stress.
FAQ
Is the 1.5KE250CA-T RoHS and REACH compliant?
Yes. The 1.5KE250CA-T meets EU Directive 2011/65/EU (RoHS 2) and 2015/863/EU (RoHS 3), with lead-free terminations and halogen/antimony content below 900 ppm Br, 900 ppm Cl, and 1000 ppm Sb. Full compliance documentation is available via Diodes Incorporated's quality portal.
What is the maximum allowable mounting torque for the DO-201 leads?
Diodes Incorporated specifies a maximum lead bending torque of 0.25 N·m during manual or automated insertion. Exceeding this may fracture the glass passivation layer or delaminate the epoxy seal, compromising surge reliability and moisture resistance.
Can the 1.5KE250CA-T be used in parallel to increase surge current handling?
No. Due to parametric variation in VBR (±5%), paralleling units causes current imbalance-only the lowest-breakdown unit conducts fully, risking thermal runaway. For higher IPP, select a single higher-rated part such as 3KP250CA (3000W).
Does the "-T" suffix indicate tape-and-reel packaging?
Yes. The "-T" suffix denotes 13-inch tape-and-reel packaging with 1000 units per reel, conforming to EIA-481-D standards. This format supports automated placement and ensures controlled static discharge handling during SMT line feeding.
1.5KE250CA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 5A
- 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-201
1.5KE250CA-T FAQ
1.How can I place an order for 1.5KE250CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE250CA-T 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-T reliable?
The price and inventory of 1.5KE250CA-T 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-T is usually 5 days.
3.What payment methods are accepted for 1.5KE250CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE250CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE250CA-T?
1.5KE250CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE250CA-T 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-T?
For technical support, including 1.5KE250CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE250CA-T requirements.
6.How does Aetrix verify that 1.5KE250CA-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE250CA-T 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-T meets industry standards.
7.What is the process for return or replacement of 1.5KE250CA-T?
All 1.5KE250CA-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE250CA-T, 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-T part is unused and in its original packaging.
Return procedure for 1.5KE250CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE250CA-T Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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