Fairchild BSR57 N-Channel Low-Frequency Low-Noise Amplifier Data Sheet
Summary
The BSR57 is a low-noise N-Channel MOSFET designed for efficient, low-power chopper and switching applications in electronics circuits. This technical manual provides comprehensive specifications, including detailed electrical characteristics (such as operating voltages, leakage currents, delay times, and on/off resistance) and physical dimensions (SOT-23 package). It serves circuit designers and electrical engineers who require reliable performance parameters for integrating high-efficiency power switching components into their next-generation designs.
Page 1 Text Content
BSR57
N-Channel Low-Frequency Low-Noise Amplifier This device is designed for low-power chopper or switching application sourced from process 51
SOT-23 Mark: M5
1. Drain 2. Source 3. Gate
Absolute Maximum Ratings TC=25°C unless otherwise noted Symbol Parameter Value Units VDGO Drain-Gate Voltage
VGSO Gate-Source Voltage - 40
IGF Forward Gate Current m A
Ptot Total Power Dissipation up to Tamb=40°C m W TSTG Storage Temperature Range - 55 ~ 150 °C TJ Junction Temperature °C
Electrical Characteristics TC=25°C unless otherwise noted Symbol Parameter Test Condition Min. Max. Units BVGSS Gate-Source Voltage VDS = 0V, IC = 1.0µA
IGSS Gate Reverse Current VGS = 20V, VDS = 0V 1.0 n A IDSS Zero-Gate Voltage Drain Current VDS = 15V, VGS = 0V m A VGS(off) Gate-Source Cut-off Voltage VDS = 15V, ID = 0.5n A 2.0 6.0 VDS(on) Drain-Source On Voltage VGS = 0V, ID = 10m A 0.5 rds(on) Drain-Source On Reverse VGS = 0V, ID = 0 Crss Reverse Transfer Capacitance VDS = 0V, VGS = 10V 5.0 p F
td Delay Time VDD = 10V, VGS(on) = 0V 6.0 ns
ID = 10m A, VGS(off) = 6.0V
tr Rise Time 4.0 ns toff Turn-off Time ns
©2003 Fairchild Semiconductor Corporation Rev. A, February 2003
Page Summary Contents For Fairchild BSR57 N-Channel Low-Frequency Low-Noise Amplifier Data Sheet
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 3 |
| File Size | 43.66 KB |
| Published | June 22, 2026 |
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Frequently Asked Questions
What types of circuits is this transistor best suited for?
The BSR57 is designed specifically for low-power chopper or switching applications.
What are the absolute maximum voltage limits I must observe?
The drain-gate voltage (VDGO) limit is 40 V, and the gate-source voltage (VGSO) limit is -40 V.
Is this component approved for critical life support systems?
No; use in life support devices requires explicit written approval from Fairchild Semiconductor Corporation.
What physical package style does the BSR57 utilize?
This device comes packaged in a SOT-23 format.