Key facts
- Brand
- Fairchild
- Model
- FQPF7N40
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-12
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Fairchild FQPF7N40 N-Channel MOSFET Datasheet
The FQPF7N40 is a 400 V N‑channel enhancement‑mode power MOSFET built with Fairchild’s planar stripe DMOS technology. It offers low on‑state resistance, fast switching, and 100 % avalanche testing, making it suitable for high‑efficiency switch‑mode power supplies and lamp ballast applications.
Key specifications include a continuous drain current of 46 A at 25 °C, pulsed current up to 184 A, typical gate charge of 16.5 nC, and a power dissipation rating of 42 W. Thermal resistance is 2.98 °C·W (junction‑to‑case) and 62.5 °C·W (junction‑to‑ambient). The device is supplied in a TO‑220F package.
Fairchild FQPF7N40 specifications
| Drain‑Source Voltage (V_DSS) | 400 V |
|---|---|
| Continuous Drain Current (25 °C) | 46 A |
| Pulsed Drain Current | 184 A |
| Power Dissipation (25 °C) | 42 W |
| Junction‑to‑Case Thermal Resistance | 2.98 °C·W |
| Typical Gate Charge | 16.5 nC |
| On‑Resistance (V_GS=10 V, I_D=2.3 A) | 0.62 Ω |
All Fairchild FQPF7N40 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum drain‑source voltage of the FQPF7N40?
The device is rated for a maximum drain‑source voltage of 400 V.
What continuous drain current can the FQPF7N40 handle at 25 °C?
It can conduct up to 46 A continuously at a case temperature of 25 °C.
What is the maximum drain‑source voltage for the FQPF7N40?
The device is rated for a maximum drain‑source voltage of 400 V.
What continuous drain current can the FQPF7N40 handle at 25 °C?
It can conduct up to 46 A continuously at a case temperature of 25 °C.