1.5KE18A STMicroelectronics TVS Diode (Uni-directional) (Diodes, Axial Diameter Horizontal Mounting) In Stock
The STMicroelectronics 1.5KE18A is a 1500W unidirectional TVS diode with 18V standoff voltage and 32.5V maximum clamping voltage. It provides robust ESD and surge protection in a DO-201 axial package. UL recognized, available in stock worldwide with fast global shipping.
- Manufacturer
- STMicroelectronics
- Package
- Diodes, Axial Diameter Horizontal Mounting
- Pin Count
- 2
- Lifecycle
- END OF LIFE
- Datasheet
- 1.5KE18A Datasheet PDF
- Category
- TVS Diode (Uni-directional)
- Price
- From $0.1040(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 capability with 18V standoff voltage for high-energy transient suppression
- Low clamping voltage of 32.5V max ensures sensitive downstream components are reliably protected
- UL recognized unidirectional TVS diode suitable for use in safety-critical and consumer applications
- Tight ±5% breakdown voltage tolerance (17.1V to 18.9V) for precise clamping threshold control
Applications
The 1.5KE18A is widely used for transient voltage protection in power supply inputs, automotive electronics, and industrial control systems where voltage spikes must be clamped. Its high 1500W surge capability makes it suitable for protecting circuits from lightning-induced surges, ESD events, and inductive load switching. It is also used in telecom equipment, motor control interfaces, and DC power rails operating near 18V.
Specifications
| Factory Lead Time | 25Weeks |
| YTEOL | 1 |
| Additional Feature | UL RECOGNIZED |
| Breakdown Voltage-Max | 18.9V |
| Breakdown Voltage-Min | 17.1V |
| Breakdown Voltage-Nom | 18V |
| Case Connection | ISOLATED |
| Clamping Voltage-Max | 32.5V |
| Configuration | SINGLE, 1 CHANNEL |
| Diode Capacitance-Min | 4300pF |
| 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 | 15.3V |
| Reverse Current-Max | 5 µA |
| Reverse Test Voltage | 15.3V |
| Surface Mount | NO |
| Technology | AVALANCHE |
| Terminal Finish | Matte Tin (Sn) |
| 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
Compatible alternatives and drop-in replacements for 1.5KE18A:
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Frequently Asked Questions
What is the peak power rating of the 1.5KE18A TVS diode?
The 1.5KE18A is rated for 1500W peak pulse power dissipation, measured at a 10/1000 µs waveform. This high surge capability ensures the device can handle large transient events such as lightning surges or inductive load switching without damage to downstream circuitry.
What is the clamping voltage of the 1.5KE18A?
The 1.5KE18A has a maximum clamping voltage of 32.5V at the peak pulse current. The nominal breakdown voltage is 18V with a minimum of 17.1V and maximum of 18.9V, offering a tight ±5% tolerance for predictable and reliable overvoltage protection in precision circuits.
What package does the 1.5KE18A use and how is it mounted?
The 1.5KE18A comes in a DO-201 axial through-hole package, designed for horizontal PCB mounting. This classic diode package is robust, easy to handle during assembly, and provides good thermal dissipation through its leads and body, making it suitable for high-power transient applications.
Is the 1.5KE18A suitable for automotive or industrial applications?
Yes, the 1.5KE18A is well suited for automotive and industrial environments. Its 1500W surge rating handles the harsh transients common on vehicle power buses and industrial motor lines. The UL recognized rating also qualifies it for use in safety-critical consumer and industrial equipment requiring third-party approval.
What is the difference between the 1.5KE18A and 1.5KE18CA?
The 1.5KE18A is a unidirectional TVS diode, meaning it clamps voltage transients in only one polarity direction, making it ideal for DC power line protection. The 1.5KE18CA (with 'C' suffix) is the bidirectional version, capable of clamping transients in both directions, and is preferred for AC lines or data signal protection.
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STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1448 | $0.14 |
| 100+ | $0.1350 | $13.50 |
| 500+ | $0.1290 | $64.50 |
| 625+ | $0.1220 | $76.25 |
| 1250+ | $0.1130 | $141.25 |
| 2500+ | $0.1040 | $260.00 |
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