STP20NK50Z STMicroelectronics MOSFET (N-Channel) (Transistor Outline, Vertical) In Stock
STP20NK50Z is an N-channel MOSFET from STMicroelectronics in a TO-220AB package, rated at 500 V and 17 A with 0.27 Ω on-resistance and built-in avalanche protection. Competitive pricing available in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- STP20NK50Z Datasheet PDF
- Category
- MOSFET (N-Channel)
- Price
- From $1.4400(MOQ 1)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 500 V drain-source breakdown voltage with avalanche energy rating of 850 mJ for robust overvoltage protection
- Low on-resistance of 0.27 Ω (max) at 17 A drain current for efficient power switching
- TO-220AB single package with built-in diode enabling simplified circuit design and reduced component count
Applications
The STP20NK50Z is well-suited for switched-mode power supplies (SMPS), motor drive circuits, and industrial power conversion systems operating up to 500 V. Its 17 A continuous drain current and low on-resistance make it effective in buck/boost converters and half-bridge topologies. The integrated avalanche-rated structure provides additional robustness in unclamped inductive switching applications.
Specifications
| Factory Lead Time | 13Weeks |
| YTEOL | 5.95 |
| Avalanche Energy Rating (Eas) | 850mJ |
| Configuration | SINGLE WITH BUILT-IN DIODE |
| DS Breakdown Voltage-Min | 500V |
| Drain Current-Max (ID) | 17A |
| Drain-source On Resistance-Max | 0.27Ω |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| JEDEC-95 Code | TO-220AB |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Operating Mode | ENHANCEMENT MODE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation-Max (Abs) | 190W |
| Pulsed Drain Current-Max (IDM) | 68A |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | SINGLE |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STP20NK50Z:
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Frequently Asked Questions
What is the maximum continuous drain current and drain-source voltage of the STP20NK50Z?
The STP20NK50Z supports a maximum continuous drain current (ID) of 17 A and a drain-source breakdown voltage of 500 V minimum, making it suitable for high-voltage power switching applications in industrial and consumer designs.
How does the 850 mJ avalanche energy rating benefit motor drive applications?
An avalanche energy rating of 850 mJ means the STP20NK50Z can safely absorb inductive kickback energy during motor commutation events without destructive breakdown, reducing the need for external clamping components and improving overall system reliability at load currents up to 17 A.
When would you choose STP20NK50Z over a lower-voltage MOSFET in a 400 V bus power supply?
In a 400 V bus SMPS design, the STP20NK50Z offers a 100 V safety margin with its 500 V rating and only 0.27 Ω on-resistance, keeping conduction losses low at 17 A while avoiding the higher cost of 600 V or 650 V rated devices for moderate-voltage rails.
What package does STP20NK50Z use and how does it affect thermal management?
STP20NK50Z uses the TO-220AB (JEDEC-95 code R-PSFM-T3) through-hole package, which provides a large metal tab for direct heatsink mounting. This enables efficient thermal dissipation at continuous drain currents of 17 A, keeping junction temperatures within safe limits without forced-air cooling in many designs.
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Why Buy from FindMyChip
About STMicroelectronics
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+ | $5.8100 | $5.81 |
| 10+ | $3.1100 | $31.10 |
| 100+ | $2.9600 | $296.00 |
| 500+ | $1.5478 | $773.90 |
| 750+ | $1.4500 | $1087.50 |
| 1500+ | $1.4400 | $2160.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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