1.5KE250A STMicroelectronics TVS Diode (Uni-directional) (Diodes, Axial Diameter Horizontal Mounting) In Stock
STMicroelectronics 1.5KE250A is a 1500W unidirectional TVS diode with 250V nominal breakdown voltage in axial DO-201 package. Features 237V-263V breakdown range, 442V maximum clamping voltage, and UL recognition for reliable transient overvoltage protection in industrial and power applications.
- Manufacturer
- STMicroelectronics
- Package
- Diodes, Axial Diameter Horizontal Mounting
- Pin Count
- 2
- Lifecycle
- END OF LIFE
- Datasheet
- 1.5KE250A Datasheet PDF
- Category
- TVS Diode (Uni-directional)
- Price
- From $0.1770(MOQ 1)
- Temp Range
- -55.0°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1500W peak pulse power dissipation with 250V nominal breakdown voltage and 442V maximum clamping voltage for robust protection of high-voltage circuits
- Unidirectional configuration in DO-201 axial package with UL recognition, suitable for AC/DC power line protection in industrial environments
- Tight 237V-263V breakdown voltage tolerance (±5%) ensuring consistent clamping performance across production lots for precision protection circuits
Applications
The 1.5KE250A is used for transient voltage suppression in high-voltage industrial equipment, power supplies, motor drives, and telecom power systems where 250V line protection is required. Its 1500W peak power handling makes it suitable for protecting against lightning surges, inductive switching spikes, and ESD events on 220VAC power lines and high-voltage DC rails. The axial DO-201 package facilitates through-hole assembly in rugged industrial designs requiring reliable long-term overvoltage protection.
Specifications
| Factory Lead Time | 25Weeks |
| YTEOL | 1 |
| Additional Feature | UL RECOGNIZED |
| Breakdown Voltage-Max | 263V |
| Breakdown Voltage-Min | 237V |
| Breakdown Voltage-Nom | 250V |
| Case Connection | ISOLATED |
| Clamping Voltage-Max | 442V |
| Configuration | SINGLE, 1 CHANNEL |
| Diode Capacitance-Min | 560pF |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JEDEC-95 Code | DO-201 |
| JESD-30 Code | O-PALF-W2 |
| JESD-609 Code | e3 |
| Non-rep Peak Rev Power Dis-Max | 1500W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | ROUND |
| Package Style | LONG FORM |
| Polarity | UNIDIRECTIONAL |
| Power Dissipation-Max | 5W |
| Qualification Status | Not Qualified |
| Reference Standard | IEC-61000-4-2, 4-4, 4-5; MIL-STD-750 |
| Rep Pk Reverse Voltage-Max | 213V |
| Reverse Current-Max | 5 µA |
| Reverse Test Voltage | 213V |
| Surface Mount | NO |
| Technology | AVALANCHE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | WIRE |
| Terminal Position | AXIAL |
| Package | Diodes, Axial Diameter Horizontal Mounting |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the breakdown voltage and clamping voltage specifications of the 1.5KE250A?
The 1.5KE250A has a nominal breakdown voltage of 250V with a guaranteed range of 237V minimum to 263V maximum at 1mA test current. The maximum clamping voltage is 442V at peak pulse current, defining the worst-case voltage presented to the protected circuit during a transient event.
What peak power can the 1.5KE250A handle and for how long?
The 1.5KE250A is rated for 1500W peak pulse power dissipation based on a 10/1000 microsecond waveform as defined in IEC standards. This high power rating allows it to absorb substantial transient energy from lightning surges and inductive load switching without damage.
Is the 1.5KE250A unidirectional or bidirectional and what does that mean?
The 1.5KE250A is unidirectional, meaning it clamps voltage transients in one polarity only (like a zener diode). It is suitable for DC circuits and unipolar transient protection. For AC line protection or bipolar transient suppression, a bidirectional variant (1.5KE250CA) would be required instead.
What package does the 1.5KE250A use and is it UL recognized?
The 1.5KE250A is housed in an axial DO-201 package with isolated case connection for through-hole PCB mounting. It carries UL recognition, confirming it meets safety standards required for use in UL-listed equipment and industrial power systems.
What applications is the 1.5KE250A designed for?
The 1.5KE250A is designed for transient protection in 220VAC power lines, industrial motor control circuits, power conversion equipment, telecom power supplies, and high-voltage DC systems. Its 1500W rating and 250V standoff voltage make it appropriate for protecting circuits operating near or above 200V DC or 120/220VAC mains.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.6600 | $1.66 |
| 10+ | $0.9180 | $9.18 |
| 100+ | $0.3464 | $34.64 |
| 250+ | $0.3223 | $80.57 |
| 500+ | $0.3078 | $153.90 |
| 1000+ | $0.1770 | $177.00 |
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