IRF7311 N-channel MOSFET connection guide

IRF7311 N-channel MOSFET SO-8 wiring guide with power, signal assignments, and bench checks.

SO-8

8 contacts Current package

Infineon / International Rectifier · Two dies in an eight-lead small-outline package.

Required

Use a current-limited 5 V supply and a 1 kΩ resistive load. Pull the gate down to its source through 10 kΩ.

5 V
- Current-limited 5 V supply
- RL.1
Switched node
- D1 (7)
- D1 (8)
- RL.2
- Meter positive
Return
- S1 (1)
- S2 (3)
- G2 (4)
- Supply return
- Gate supply return
- RPD.2
- Meter common
Gate
- G1 (2)
- RPD.1

International Rectifier IRF7311PbF, terminal diagram and electrical characteristics. The resistors are fixture choices.

Use a 0/5 V gate drive through 100 Ω. Keep the 10 kΩ pull-down in place to define the state when the gate driver is disconnected.

5 V
- Current-limited 5 V supply
- RL.1
Switched node
- D1 (7)
- D1 (8)
- RL.2
- Meter positive
Return
- S1 (1)
- S2 (3)
- G2 (4)
- Supply return
- Gate supply return
- RPD.2
- Meter common
Gate
- G1 (2)
- RPD.1
- RG.2
Drive
- Gate-driver output
- RG.1

With the gate near 5 V relative to source, the switched node should fall close to ground and the load current should be about 5 mA.
The threshold voltage describes the onset of conduction. Use the specified on-resistance at the actual gate drive to estimate load losses.

International Rectifier IRF7311PbF, electrical characteristics. Supply, gate drive and resistors are fixture choices.

Highlighted contacts are used in the required step or selected circuit. Select a contact to inspect it.

Top view. Locate the package index before counting counterclockwise from pin 1.

Input · Control

Gate. Drive with the rated voltage relative to its own source.

International Rectifier IRF7311PbF, p. 1

International Rectifier / Infineon pinout and electrical figures. Check the manufacturer before applying them to second-source parts.

International Rectifier IRF7311PbF· Pin assignment, absolute maximum ratings, static characteristics and package outline.
Source register· Document revisions, applicable order codes, consulted sections and available file checksums.