HIT 2SA872A Datasheet
2SA872, 2SA872A
Silicon PNP Epitaxial
Application
• Low frequency low noise amplifier
• Complementary pair with 2SC1775/A
Outline
TO-92 (1)
1. Emitter
2. Collector
3. Base
3
2
1
2SA872, 2SA872A
Absolute Maximum Ratings (Ta = 25°C)
Item Symbol 2SA872 2SA872A Unit
Collector to base voltage V
Collector to emitter voltage V
Emitter to base voltage V
Collector current I
Collector power dissipation P
CBO
CEO
EBO
C
C
Junction temperature Tj 150 150 °C
Storage temperature Tstg –55 to +150 –50 to +150 °C
Electrical Characteristics (Ta = 25°C)
2SA872 2SA872A
Item Symbol Min Typ Max Min Typ Max Unit Test conditions
Collector to emitter
breakdown voltage
Collector cutoff current I
DC current tarnsfer ratio h
Base to emitter voltage V
Collector to emitter
saturation voltage
Gain bandwidth product f
Collector output
capacitance
Noise figure NF — — 5.0 — — 5.0 dB VCE = –6 V,
Note: 1. The 2SA872/A is grouped by h
DE
250 to 500 400 to 800
V
(BR)CEO
CBO
–90 — — –120 — — V IC = –1 mA, RBE = ∞
— — –0.5 — — — µAVCB = –75 V, IE = 0
— — — — — –0.5 µAVCE = –100 V, IE = 0
1
*
250 — 800 250 — 800 VCE = –12 V,
160 — — 160 — — VCE = –12 V,
— — –0.75 — — –0.75 V VCE = –12 V,
— — –0.5 — — –0.5 V IC = –10 mA,
— 120 — — 120 — MHz VCE = –12 V,
h
V
FE1
FE2
BE
CE(sat)
T
Cob — 1.8 — — 1.8 — pF VCB = –25 V, IE = 0,
— — 1.5 — — 1.5 dB f = 1 kHz
as follows.
FE1
–90 –120 V
–90 –120 V
–5 –5 V
–50 –50 mA
300 300 mW
I
= –2 mA
C
I
= –0.1 mA
C
I
= –2 mA
C
I
= –1 mA
B
I
= –2 mA
C
f = 1 MHz
f = 10 Hz
I
= –50 µA
C
R
= 50 kΩ
g
2
2SA872, 2SA872A
Maximum Collector Dissipation Curve
300
(mW)
C
200
100
Collector Power Dissipation P
0
Ambient Temperature Ta (°C)
Typical Transfer Characteristics
–10
–3
(mA)
C
VCE = –12 V
–1.0
–0.3
Ta =100°C
75 50 25 0 –25
–0.1
Collector Current I
–0.03
–0.01
Base to Emitter Voltage V
50
100 150
–0.8–0.7–0.6–0.5–0.4–0.3–0.2
(V)
BE
Typical Output Characteristics
–10
–22
–8
(mA)
C
–6
–20
–18
–16
–14
–12
–10
P
C
= 300 mW
–8
–4
–6
–4
–2
Collector Current I
–2 µA
IB = 0
–10 –20 –30 –40 –50
0
Collector to Emitter Voltage V
CE
DC Current Transfer Ratio vs. Collector Current
1,000
FE
800
600
VCE = –12 V
Ta = 100°C
75
50
25
0
400
–25
200
DC Current Transfer Ratio h
0
–0.01 –0.03 –0.1 –0.3 –1.0 –3 –10 –30
Collector Current I
(mA)
C
(V)
3
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