ROHM 2SD2657K Product Specifications and User Guide
Summary
This robust NPN semiconductor is a high-performance transistor designed for demanding low frequency amplifier driver applications. Ideal for electronic designers and circuit engineers who require reliable power switching with large collector current capabilities. The comprehensive manual provides detailed electrical characteristics, absolute maximum ratings, temperature operating ranges, and application guidelines, ensuring correct implementation in diverse circuits. Use this guide to select and integrate the perfect component into your next amplification project.
Page 1 Text Content
2SD2657K
Transistors
Low frequency amplifier 2SD2657K
!Application !External dimensions (Units : mm)
Low frequency amplifier Driver
!Features
1) A collector current is large. 2) VCE(sat) ≤ 350m V At IC = 1A / IB = 50m A
Each lead has same dimensions
ROHM : SMT3 Abbreviated symbol : FZ (1) Emitter
EIAJ : SC-59 (2) Base JEDEC : SOT-346 (3) Collector
0~ 0. 10.3Min.
!Absolute maximum ratings (Ta=25°C) !Packaging specifications
Parameter Symbol Limits Unit Package Taping
Collector-base voltage VCBO 1. 1.
Code T146
Collector-emitter voltage VCEO
Basic ordering unit (pieces) 3000Type
Emitter-base voltage VEBO
IC 1.5 2SD2657K
Collector current
ICP Power dissipation PC m W
Junction temperature Tj °C Range of storage temperature Tstg −55~+150 °C ∗Single pulse, PW=1ms
!Electrical characteristics (Ta=25°C)
Parameter Symbol Min. Typ. Max. Unit Conditions
Collector-base breakdown voltage BVCBO IC=10µA Collector-emitter breakdown voltage BVCEO IC=1m A Emitter-base breakdown voltage BVEBO IE=10µA Collector cutoff current ICBO n A VCB=30V Emitter cutoff current IEBO n A VEB=6V Collector-emitter saturation voltage VCE(sat) m V IC=1A, IB=50m A DC current gain h FE VCE=2V, IC=100m A Transition frequency f T MHz VCE=2V, IE=−100m A, f=100MHz
Corrector output capacitance Cob p F VCB=10V, IE=0A, f=1MHz
∗ Pulsed
Page Summary Contents For ROHM 2SD2657K Product Specifications and User Guide
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 3 |
| File Size | 78.56 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What type of equipment should I NOT use this component with due to safety concerns?
Do not use it in highly reliable or life-safety critical systems, such as medical instruments, transportation equipment, aerospace machinery, or nuclear controllers.
What are the maximum absolute ratings for voltage and current (Ta=25°C)?
The Collector-base voltage ($ ext{V}_{ ext{CBO}}$) is limited to 30 V, Collector-emitter voltage ($ ext{V}_{ ext{CEO}}$) is 30 V, and the peak collector current ($ ext{I}_{ ext{CP}}$) is 3 A.
Does this product require special setup for high reliability applications?
If your application demands a very high level of reliability (e.g., in life-safety systems), you must consult the sales representative before use.
What are the physical packaging options for this transistor?
It is available in three standardized packages: SMT3(1), EIAJ : SC-59 (2), and JEDEC : SOT-346 (3).