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Contents

README

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FNK10N25B-VB

VBsemi Elec · MOSFETs · TSSOP-8

FNK10N25B-VB from VBsemi Elec, in a TSSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 D passive Drain pin shared by both N-channel MOSFETs (pins 1 and 8 are the common drain), VDS rated 30 V.
2 S1 passive Source of MOSFET 1.
3 S1 passive Source of MOSFET 1.
4 G1 input Gate of MOSFET 1, VGS rated ±20 V absolute maximum.
5 G2 input Gate of MOSFET 2, VGS rated ±20 V absolute maximum.
6 S2 passive Source of MOSFET 2.
7 S2 passive Source of MOSFET 2.
8 D passive Drain pin shared by both N-channel MOSFETs (pins 1 and 8 are the common drain), VDS rated 30 V.

Key specifications

Parameter Value
Manufacturer VBsemi Elec
Package TSSOP-8
Category Transistors/Thyristors
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Drain-Source Voltage VDS 30 V TA = 25 °C, unless otherwise noted 1
Gate-Source Voltage VGS -20 20 V TA = 25 °C, unless otherwise noted 1
Continuous Drain Current (TJ = 150 °C), TA = 25 °C, t ≤ 10 s ID 8.6 A TA = 25 °C, 10 s 1
Continuous Drain Current (TJ = 150 °C), TA = 25 °C, steady state ID 7.2 A TA = 25 °C, steady state 1
Continuous Drain Current (TJ = 150 °C), TA = 70 °C, t ≤ 10 s ID 7.5 A TA = 70 °C, 10 s 1
Continuous Drain Current (TJ = 150 °C), TA = 70 °C, steady state ID 5.5 A TA = 70 °C, steady state 1
Pulsed Drain Current IDM 30 A TA = 25 °C, unless otherwise noted 1
Continuous Source Current (Diode Conduction), t ≤ 10 s IS 1.5 A TA = 25 °C, 10 s 1
Continuous Source Current (Diode Conduction), steady state IS 1 A TA = 25 °C, steady state 1
Maximum Power Dissipation, TA = 25 °C, t ≤ 10 s PD 1.6 W TA = 25 °C, 10 s 1
Maximum Power Dissipation, TA = 25 °C, steady state PD 1.2 W TA = 25 °C, steady state 1
Maximum Power Dissipation, TA = 70 °C, t ≤ 10 s PD 0.98 W TA = 70 °C, 10 s 1
Maximum Power Dissipation, TA = 70 °C, steady state PD 0.67 W TA = 70 °C, steady state 1
Operating Junction and Storage Temperature Range TJ, Tstg -55 150 °C 1
Gate Threshold Voltage VGS(th) 1.5 3 V VDS = VGS, ID = 250 µA 2
Gate-Body Leakage IGSS -200 200 nA VDS = 0 V, VGS = ± 10 V 2
Zero Gate Voltage Drain Current IDSS 1 µA VDS = 30 V, VGS = 0 V 2
Zero Gate Voltage Drain Current, TJ = 70 °C IDSS 25 µA VDS = 30 V, VGS = 0 V, TJ = 70 °C 2
On-State Drain Current ID(on) 30 A VDS ≤ 5 V, VGS = 4.5 V 2
Drain-Source On-State Resistance RDS(on) 0.012 Ω VGS = 10 V, ID = 8.5 A 2
Drain-Source On-State Resistance RDS(on) 0.019 Ω VGS = 4.5 V, ID = 7.5 A 2
Forward Transconductance gfs 30 S VDS = 15 V, ID = 6.5 A 2
Diode Forward Voltage VSD 0.71 1.2 V IS = 1.5 A, VGS = 0 V 2
Total Gate Charge Qg 13 nC VDS = 15 V, VGS = 4.5 V, ID = 6.5 A 2
Gate-Source Charge Qgs 2.2 nC 2
Gate-Drain Charge Qgd 3.6 nC 2
Turn-On Delay Time td(on) 245 365 ns VDD = 15 V, RL = 10 Ω, ID ≅ 1 A, VGEN = 4.5 V, RG = 6 Ω 2
Rise Time tr 330 495 ns VDD = 15 V, RL = 10 Ω, ID ≅ 1 A, VGEN = 4.5 V, RG = 6 Ω 2
Turn-Off Delay Time td(off) 860 1300 ns VDD = 15 V, RL = 10 Ω, ID ≅ 1 A, VGEN = 4.5 V, RG = 6 Ω 2
Fall Time tf 510 765 ns VDD = 15 V, RL = 10 Ω, ID ≅ 1 A, VGEN = 4.5 V, RG = 6 Ω 2
Thermal Resistance, Junction-to-Ambient, t ≤ 10 s RthJA 72 83 °C/W t ≤ 10 s, surface mounted on FR4 board 1
Thermal Resistance, Junction-to-Ambient, steady state RthJA 100 120 °C/W steady state, surface mounted on FR4 board 1
Thermal Resistance, Junction-to-Foot (Drain), steady state RthJF 55 70 °C/W steady state 1

CAD (KiCad official)

  • Symbol: FNK10N25B-VB
  • Footprint: Package_SO:TSSOP-8_3x3mm_P0.65mm
  • 3D model: TSSOP-8 (KiCad packages3D, STEP)
  • 3D model files: fnk10n25b-vb-etched.step / fnk10n25b-vb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fnk10n25b-vb.step / fnk10n25b-vb.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: VBsemi Elec datasheet (8 pp, sha256 a804e5da98dfa290, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF