Key facts
- Brand
- Fairchild
- Model
- FQAF15N70
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-12
Start here

Fairchild FQAF15N70 MOSFET Handbook
The FQAF15N70 is a 700 V N‑Channel enhancement mode power MOSFET built with Fairchild's planar stripe DMOS technology. It is designed for high‑efficiency switch‑mode power supplies, offering low on‑state resistance and fast switching performance.
The document includes absolute maximum ratings, detailed electrical characteristics, typical performance curves, and test circuit diagrams. Package dimensions for the TO‑3PF case and trademark information are also provided.
Fairchild FQAF15N70 specifications
| Drain‑Source Voltage (VDS) | 700 V |
|---|---|
| Continuous Drain Current (ID) @ 25°C | 9.5 A |
| Pulsed Drain Current (ID) (Note 1) | 38 A |
| Typical Gate Charge (Qg) | 70 nC |
| Input Capacitance (Ciss) typical | 2790 pF |
| On‑Resistance (RDS(on)) @ VGS=10 V | 0.56 Ω |
| Power Dissipation (PD) @ 25°C | 120 W |
| Thermal Resistance Junction‑to‑Case (RθJC) | 1.04 °C/W |
| Thermal Resistance Junction‑to‑Ambient (RθJA) | 40 °C/W |
All Fairchild FQAF15N70 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 for the FQAF15N70?
The maximum drain‑source voltage is 700 V.
What continuous drain current can the FQAF15N70 handle at 25 °C?
It can handle a continuous drain current of 9.5 A at 25 °C.
What is the maximum drain‑source voltage for the FQAF15N70?
The device is rated for a maximum drain‑source voltage of 700 V.
