Transistors
1
Publication date: August 2004 SJC00313AED
2SD1938(F)
Silicon NPN epitaxial planar type
For low-voltage output amplification
For muting
For DC-DC converter
■Features
•Low ON resistance Ron
•High forward current transfer ratio hFE
•Mini type package, allowing downsizing of the equipment and
automatic insertion through the tape packing
■Absolute Maximum Ratings Ta = 25°C
Parameter Symbol Rating Unit
Collector-base voltage (Emitter open) VCBO 50 V
Collector-emitter voltage (Base open) VCEO 20 V
Emitter-base voltage (Collector open) VEBO 25 V
Collector current IC300 mA
Peak collector current ICP 500 mA
Collector power dissipation PC200 mW
Junction temperature Tj150 °C
Storage temperature Tstg −55 to +150 °C
Parameter Symbol Conditions Min Typ Max Unit
Collector-emitter voltage (Base open) VCEO IC = 1 mA, IB = 020V
Base-emitter voltage VBE VCE = 2 V, IC = 4 mA 0.6 V
Collector-base cutoff current (Emitter open)
ICBO VCB = 50 V, IE = 0 0.1 µA
Emitter-base cutoff current (Collector open)
IEBO VEB = 25 V, IC = 0 0.1 µA
Forward current transfer ratio *1hFE VCE = 2 V, IC = 4 mA 500 2
500
Collector-emitter saturation voltage VCE(sat) IC = 30 mA, IB = 3 mA 0.1 V
Transition frequency fTVCB = 6 V, IE = −4 mA, f = 200 MHz 80 MHz
Collector output capacitance Cob VCB = 10 V, IE = 0, f = 1 MHz 7 pF
(Common base, input open circuited)
ON resistance *2Ron 1.0 Ω
■Electrical Characteristics Ta = 25°C ± 3°C
Unit: mm
Note) 1. Measuring methods are based on JAPANESE INDUSTRIAL STANDARD JIS C 7030 measuring methods for transistors.
2.*1: Rank classification *2:Ron Measuremet circuit
Rank S T No rank
hFE 500 to 1
500 800 to 2
500 500 to 2
500
VV
1 kΩ
Ron
= VB × 1
000 (Ω)
VA − VB
f = 1 kHz
V = 0.3 V
VB
IB = 1 mA
VA
1: Base
2: Emitter
3: Collector
EIAJ: SC-59
JEDEC: SOT-346
Mini3-G1 Package
Marking symbol: 3W
0.40+0.10
–0.05
(0.65) 1.50+0.25
–0.05
2.8+0.2
–0.3
2
1
3
(0.95) (0.95)
1.9±0.1
2.90+0.20
–0.05
0.16+0.10
–0.06
0.4±0.2
5˚
10˚
0 to 0.1 1.1+0.2
–0.1
1.1+0.3
–0.1
Product of no-rank classification is not marked.
This product complies with the RoHS Directive (EU 2002/95/EC).