Datasheet - STF4N62K3, STI4N62K3, STU4N62K3 - N‑channel 620 V, 1.7 Ω typ., 3.8 A MDmesh K3 Power MOSFET in a TO-220FP, I²PAK and IPAK packages
Document overview
- Manufacturer or author: STMICROELECTRONICS
- PDF pages: 18
Technical content
Datasheet sections
- 1 Electrical ratings
- 2 Electrical characteristics
- 2.1 Electrical characteristics (curves)
- 3 Test circuits
- 4 Package information
- 4.1 TO-220FP type B package information
- 4.2 I²PAK package information
- 4.3 IPAK (TO-251) type A package information
- 5 Ordering information
Features
Order codes VDS RDS(on) max. ID STF4N62K3 620 V 2 Ω 3.8 ASTI4N62K3 STU4N62K3
- 100% avalanche tested
- Extremely high dv/dt capability
- Very low intrinsic capacitance
- Improved diode reverse recovery characteristics
- Zener-protected
Applications
- Switching applications
Description
These MDmesh K3 Power MOSFETs are the result of improvements applied to STMicroelectronics’ MDmesh technology, combined with a new optimized vertical structure. These devices boast an extremely low on-resistance, superior dynamic performance and high avalanche capability, rendering them suitable for the most demanding applications. 1 2 TO-220FP 2 1 2 3 TAB I2PAK IPAK TAB D(2, TAB) G(1) S(3) AM01476v1_tab Product status link STF4N62K3 STI4N62K3 STU4N62K3 N‑channel 620 V, 1.7 Ω typ., 3.8 A MDmesh K3 Power MOSFET in a TO-220FP, I²PAK and IPAK packages STF4N62K3, STI4N62K3, STU4N62K3 Datasheet DS6843 - Rev 5 - January 2026 For further information, contact your local STMicroelectronics sales office.
1 Electrical ratings
Table 1. Absolute maximum ratings
- Pulse width is limited by safe operating area.
Table 2. Thermal data Table 3. Avalanche characteristics
2 Electrical characteristics
TC = 25 °C unless otherwise specified. Table 4. Static
- Specified by design, not tested in production.
Table 5. Dynamic
- Coss eq. is defined as a constant equivalent capacitance giving the same charging time as Coss when VDS increases from 0
- Specified by design, not tested in production.
Table 6. Switching times Figure 23. Switching time waveform)
Electrical characteristics
Table 7. Source-drain diode
- Pulse width is limited by safe operating area.
- Pulse test: pulse duration = 300 µs, duty cycle 1.5%.
2.1 Electrical characteristics (curves)
Figure 1. Safe operating area for TO-220FP Figure 2. Normalized transient thermal impedance Figure 3. Safe operating area for I2PAK Figure 4. Normalized transient thermal impedance Figure 5. Safe operating area for IPAK Figure 6. Normalized transient thermal impedance
Figure 7. Typical output characteristics
10 VDS (V)20
Figure 8. Typical transfer characteristics Figure 9. Typical gate charge characteristics Figure 10. Typical drain-source on-resistance
2 ID(A)
Figure 11. Typical capacitance characteristics Figure 12. Typical output capacitance stored energy
3 Test circuits
Figure 18. Test circuit for resistive load switching times Figure 19. Test circuit for gate charge behavior Figure 20. Test circuit for inductive load switching and Figure 21. Unclamped inductive load test circuit Figure 22. Unclamped inductive waveform Figure 23. Switching time waveform
4 Package information
To meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions, and product status are available at: www.st.com. ECOPACK is an ST trademark.
4.1 TO-220FP type B package information
Figure 24. TO-220FP type B package outline
Package information
Table 8. TO-220FP type B package mechanical data
4.2 I²PAK package information
Figure 25. I2PAK package outline
Table 9. I²PAK package mechanical data
4.3 IPAK (TO-251) type A package information
Figure 26. IPAK (TO-251) type A package outline
Table 10. IPAK (TO-251) type A package mechanical data
5 Ordering information
Table 11. Order codes
Ordering information
Revision history
Table 12. Document revision history 05-May-2010 1 First release. 16-Dec-2010 2 Document status promoted from preliminary data to datasheet. Inserted max and min. values for RG in Table 5. Updated Section 4: Package mechanical data. Added package, mechanical data: I²PAKFP. Removed order code STFI4N62K3 and STP4N62K3. Updated Section 4: Package information.
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