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 |
VCBO |
–90 |
–120 |
V |
Collector to emitter voltage |
VCEO |
–90 |
–120 |
V |
Emitter to base voltage |
VEBO |
–5 |
–5 |
V |
Collector current |
IC |
–50 |
–50 |
mA |
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Collector power dissipation |
PC |
300 |
300 |
mW |
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Junction temperature |
Tj |
150 |
150 |
°C |
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Storage temperature |
Tstg |
–55 to +150 |
–50 to +150 |
°C |
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Electrical Characteristics (Ta = 25°C)
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2SA872 |
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2SA872A |
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Item |
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Symbol |
Min |
Typ |
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Max Min Typ Max |
Unit |
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Test conditions |
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Collector to emitter |
V(BR)CEO |
–90 |
— |
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–120 |
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— |
V |
I |
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C = –1 mA, RBE = ∞ |
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breakdown voltage |
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Collector cutoff current |
ICBO |
— |
— |
–0.5 |
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µA |
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VCB = –75 V, IE = 0 |
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— |
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–0.5 |
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µA |
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VCE = –100 V, IE = 0 |
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DC current tarnsfer ratio h *1 |
250 |
— |
800 |
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250 |
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— |
800 |
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V |
CE |
= –12 V, |
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FE1 |
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IC = –2 mA |
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hFE2 |
160 |
— |
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160 |
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— |
— |
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V |
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CE = –12 V, |
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IC = –0.1 mA |
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Base to emitter voltage |
VBE |
— |
— |
–0.75 |
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–0.75 V |
V |
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CE = –12 V, |
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IC = –2 mA |
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Collector to emitter |
VCE(sat) |
— |
— |
–0.5 |
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— |
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–0.5 |
V |
I |
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C |
= –10 mA, |
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saturation voltage |
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IB = –1 mA |
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Gain bandwidth product |
fT |
— |
120 |
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120 |
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MHz V |
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CE = –12 V, |
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IC = –2 mA |
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Collector output |
Cob |
— |
1.8 |
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— |
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1.8 |
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pF |
V |
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CB = –25 V, IE = 0, |
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capacitance |
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f = 1 MHz |
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Noise figure |
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NF |
— |
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5.0 |
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— |
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5.0 |
dB |
V |
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CE = –6 V, f = 10 Hz |
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IC = –50 µA |
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Rg = 50 kΩ |
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— |
— |
1.5 |
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— |
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1.5 |
dB |
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f = 1 kHz |
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Note: 1. The 2SA872/A is grouped by hFE1 as follows. |
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D |
E |
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250 to 500 |
400 to 800 |
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2SA872, 2SA872A |
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Maximum Collector Dissipation Curve |
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Typical Output Characteristics |
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(mW) |
300 |
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–10 |
22 |
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20 |
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– |
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18 |
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P |
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C |
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(mA) |
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C |
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–8 |
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– |
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300 |
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14 |
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– |
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12 |
mW |
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Dissipation |
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200 |
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C |
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Current I |
–6 |
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–10 |
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– |
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–4 |
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–6 |
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Collector Power |
100 |
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Collector |
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–4 |
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–2 |
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–2 μA |
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IB = 0 |
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0 |
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50 |
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100 |
150 |
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0 |
–10 |
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–20 |
–30 |
–40 |
–50 |
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Ambient Temperature Ta |
(°C) |
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Collector to Emitter Voltage VCE (V) |
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Typical Transfer Characteristics |
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DC Current Transfer Ratio vs. Collector Current |
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–10 |
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1,000 |
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–3 |
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FE |
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VCE = –12 V |
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(mA) |
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h |
800 |
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Ta = 100°C |
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VCE = –12 V |
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C |
–1.0 |
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Ratio |
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75 |
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I |
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Current |
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Transfer |
600 |
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50 |
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25 |
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–0.3 |
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0 |
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Ta =100°C 75 |
50 |
25 |
0 –25 |
400 |
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–25 |
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Collector |
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DC Current |
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–0.1 |
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–0.03 |
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200 |
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–0.01 |
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0 |
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–0.2 |
–0.3 |
–0.4 |
–0.5 |
–0.6 |
–0.7 |
–0.8 |
–0.01 |
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–0.03 |
–0.1 |
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–0.3 |
–1.0 |
–3 |
–10 |
–30 |
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Base to Emitter Voltage |
VBE (V) |
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Collector Current IC (mA) |
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3