Skip to main content
Log in
onsemi MMBFU310LT1G — Circuit Protection

MMBFU310LT1G N-Channel JFET 25V 225mW SOT-23-3 onsemi

MPNMMBFU310LT1G
End of Life

onsemi MMBFU310LT1G, N-Channel JFET, 25 V drain-to-source voltage, 24 mA Idss at Vds=10 V, 225 mW power dissipation, SOT-23-3 surface-mount package, active production, ROHS3 compliant.

$0.51Ref. price · indicative, final on quote
onsemi MMBFU310LT1G datasheet (PDF)
PackagingTO-236-3, SC-59, SOT-23-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MMBFU310LT1G specifications
ParameterValue
FET typeN-Channel
MountingSurface Mount
Drain to source voltage25 V
Voltage - breakdown (V(BR)GSS)25 V
Voltage - cutoff (VGS off) @ id2.5 V @ 1 nA
Current - drain (Idss) @ vds (Vgs=0)24 mA @ 10 V
Power - max225 mW
Operating temperature-55°C ~ 150°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
CaseTO-236-3, SC-59, SOT-23-3
Input capacitance (Ciss) (Max) @ vds5pF @ 10V (VGS)

Product details

JFET for analog switching and front-end stages

The MMBFU310LT1G is an N-Channel JFET from onsemi in a SOT-23-3 surface-mount package, rated for 25 V drain-to-source voltage (Vdss) and 225 mW maximum power dissipation. Its 24 mA Idss at Vds=10 V (Vgs=0) makes it suitable for analog switch, cascode amplifier, and constant-current source applications where a low-capacitance, high-impedance front end is needed.

Parametric profile and design margin

The 25 V breakdown voltage (V(BR)GSS) matches the Vdss rating, giving a clean 25 V operating ceiling. The gate-source cutoff voltage (VGS off) is 2.5 V at 1 nA drain current, which sets the pinch-off region for biasing in linear circuits. Input capacitance (Ciss) is a maximum of 5 pF at Vds=10 V, a low value that preserves bandwidth in RF or high-speed analog paths — the junction capacitance does not load the signal source significantly.

The SOT-23-3 package is widely used and readily sourced through multiple distribution channels.

Frequently asked questions

Where can I find the datasheet for MMBFU310LT1G?

Engineers need full specs to validate fit in their circuit design.

Is the MMBFU310LT1G in stock at any distributor?

Buyers need immediate availability to avoid production delays.

What is the price of MMBFU310LT1G?

Sourcing buyers compare prices to meet budget constraints.

What is the pinout of MMBFU310LT1G?

Design engineers and techs need pin assignments for PCB layout or replacement.

What is the equivalent of MMBFU310LT1G?

When a part is unavailable, finding a drop-in substitute keeps projects on track.

Is MMBFU310LT1G still in production?

Brokers and long-term buyers need lifecycle assurance to avoid obsolescence risks.