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 2SD1781K
Elektronische Bauelemente NPN Silicon Plastic Encapsulated Transistor
RoHS Compliant Product A suffix of "-C" specifies halogen & lead-free
SOT-23
FEATURES
Very low VCE(sat).VCE(sat) < 0.4 V (Typ.) (IC /IB = 500mA / 50mA) Complements to 2SB1197K 2
Base Collector
A
L
3 3
3
Top View
1 2
CB
1 2
K
E D
1
Emitter
F
REF.
G
Millimeter Min. Max. 2.80 3.00 2.25 2.55 1.20 1.40 0.90 1.15 1.80 2.00 0.30 0.50
H
J
Millimeter Min. Max. 0.10 REF. 0.55 REF. 0.08 0.15 0.5 REF. 0.95 TYP.
MARKING
AF
= hFE ranking
A B C D E F
REF. G H J K L
ABSOLUTE MAXIMUM RATINGS
Parameter
Collector to Base Voltage Collector to Emitter Voltage Emitter to Base Voltage Collector Current - Continuous Total Device Dissipation Junction and Storage Temperature
Symbol
VCBO VCEO VEBO IC PC TJ, TSTG
Ratings
40 32 5 0.8 200 150, -55~150
Unit
V V V A mW C
ELECTRICAL CHARACTERISTICS
Parameter
Collector-Base Breakdown Voltage Collector-Emitter Breakdown Voltage Emitter-Base Breakdown Voltage Collector Cut-off Current Emitter Cut-off Current DC Current Gain Collector-Emitter Saturation Voltage Transition Frequency Collector Output Capacitance
(TA = 25C unless otherwise noted)
Symbol
BVCBO BVCEO BVEBO ICBO IEBO hFE VCE(sat) fT COB
Min.
40 32 5 120 -
Typ.
150 10
Max.
0.5 0.5 390 0.4 -
Unit
V V V A A V MHz pF
Test Conditions
IC = 50A, IE = 0 IC = 1mA, IB = 0 IE = 50A, IC = 0 VCB = 20V, IE = 0 VEB = 4V, IC = 0 IC = 100mA, VCE = 3.0V IC = 500mA, IB = 50mA VCE = 5V, IC = 50mA, f = 100MHz VCB = 10V, IE = 0, f = 1.0MHz
CLASSIFICATION OF hFE
Rank Range Marking Q
120 - 270 AFQ
R
180-390 AFR
http://www.SeCoSGmbH.com/
Any changes of specification will not be informed individually.
01-June-2002 Rev. A
Page 1 of 2
2SD1781K
Elektronische Bauelemente NPN Silicon Plastic Encapsulated Transistor
CHARACTERISTICS CURVE
http://www.SeCoSGmbH.com/
Any changes of specification will not be informed individually.
01-June-2002 Rev. A
Page 2 of 2


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