Transistors with built-in Resistor
UNR1231 (UN1231), UNR1231A (UN1231A)
Silicon NPN epitaxial planar type
Unit: mm
For amplification of the low frequency
2.5±0.1
(Emitter open)
Collector-emitter voltage UNR1231
(1.0)
2.0±0.2
0.45±0.05
Unit
VCBO
20
1.25±0.05
0.55±0.1
Rating
V
UNR1231A
(Base open)
(0.85)
Symbol
Collector-base voltage UNR1231
2.4±0.2
1.0±0.1
■ Absolute Maximum Ratings Ta = 25°C
Parameter
60
VCEO
UNR1231A
20
3
2
(2.5)
V
1
1: Base
2: Collector
3: Emitter
M-A1 Package
(2.5)
50
Collector current
IC
Peak collector current
ICP
Total power dissipation *
PT
Junction temperature
Tj
Storage temperature
Tstg
4.5±0.1
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• High forward current transfer ratio hFE
• M type mold package
• Costs can be reduced through downsizing of the equipment and
reduction of the number of parts.
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■ Features
(1.0)
(1.5)
3.5±0.1
(0.4)
6.9±0.1
(1.5)
0.7
A
1.5
A
1.0
W
150
°C
−55 to +150
Internal Connection
°C
C
R2
(47 KΩ)
E
ce
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ue
Note) *: Printed circuit board: Copper foil area of 1 cm2 or more, and the
board thickness of 1.7 mm for the collector portion
R1(1 kΩ)
B
■ Electrical Characteristics Ta = 25°C ± 3°C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
VCBO
IC = 10 µA, IE = 0
20
VCEO
IC = 1 mA, IB = 0
20
Collector-base cutoff current (Emitter open)
ICBO
VCB = 15 V, IE = 0
Collector-emitter cutoff current (Base open)
ICEO
VCE = 15 V, IB = 0
10
µA
Emitter-base cutoff current (Collector open)
IEBO
VEB = 14 V, IC = 0
0.5
mA
hFE
VCE = 10 V, IC = 150 mA
2 100
VCE(sat)
IC = 500 mA, IB = 5 mA
0.4
V
UNR1231
(Emitter open)
UNR1231A
an
Collector-base voltage
int
UNR1231A
Ma
(Base open)
en
Collector-emitter voltage UNR1231
Forward current transfer ratio *
Collector-emitter saturation voltage *
V
60
V
50
1
800
VCB = 20 V, IE = −20 mA, f = 200 MHz
55
µA
Transition frequency
fT
Input resistance
R1
0.7
1
1.3
MHz
V
Resistance ratio
R1/R2
0.016
0.021
0.025
Note) 1. Measuring methods are based on JAPANESE INDUSTRIAL STANDARD JIS C 7030 measuring methods for transistors.
2. *: Pulse measurement
Note) The part numbers in the parenthesis show conventional part number.
Publication date: October 2003
SJH00005BED
1