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AF178

Philips
Part Number AF178
Manufacturer Philips
Description GERMANIUM ALLOY-DIFFUSED TRANSISTOR
Published Sep 13, 2015
Detailed Description PHILIPS TENTATIVE DATA R.F. GERMANIUM ALLOY-DIFFUSED TRANSISTOR Germanium alloy-diffused transistor of the p-n-p type...
Datasheet PDF File AF178 PDF File

AF178
AF178


Overview
PHILIPS TENTATIVE DATA R.
F.
GERMANIUM ALLOY-DIFFUSED TRANSISTOR Germanium alloy-diffused transistor of the p-n-p type in a metal case with low noise and high gain up to 260 Mc/s, for use in V .
H .
F .
applications as amplifier-, oscillator- and converter circuits.
r L I M I T I N G V A L U E S (Absolute max.
values) Collector Voltage (base reference) = max.
25 V Current = max.
10 mA Emitter Reverse current = max.
1 mA Base Current -Ig = max.
1 mA Dissipation Total dissipation Ptot = max.
110 mW Temperatures Storage temperature Junction temperature continuous incidentally (total duration max.
200 hrs) THERMAL DATA 1s = -55 °C to+75 °C iT = max.
T, = max.
= max.
'96 °C '?9Q° °C 200 hrs) Thermal resistance from junction to ambience in free air K = max.
0.
4°C/mW Shield load- JANUARY 1964 PHILIPS ELECTRON TUBE DIVISION Dimensions in mm TO-12 case OD C H A R A C T E R I S T I C S at Tamb = 25 °C Collector current at Ig = 0 = 12 v = 25 v Emitter voltage at 1 = 0 -IE = 50 = -vEB o >y 10 50 juA > o.
s v Base current -VCB = 12 V; -Ic - 1 mA Base voltage -VCB = 12 V; -Ic = 1 mA -IB 50 -vBE > 220 mV -VBE < 360 mv CHARACTERISTICS RANGE VALUES FOR EQUIP- MENT DESIGN - 25 Frequency at which = 1 -VCB = 12 V; IE = 1 mA = 180 Mc/s Base impedance -vCB = 12 V; IE = f = 2 Mc/s zrb = 10 Feedback capacitance = 12 V; -IC - 1 mA f = 0.
45 Mc/s -cre = 0.
8 pF 1) Shield lead CHARACTERISTICS RANGE VALUES FOR EQUIPM E N T D E S I G N (continued) Current amplification factor -VCE = 12 V; -Ic = 1 mA f = 1 kc/s hf e 20 Noise figure -VCE = 12 V; -Ic = 1 mA f = 200 Mc/s Input source resistance = so n = 6 dB < 7.
5 dB Test circuit for power gain at 200 Mc/s 1.
6.
ajb 103V R|_ is chosen such that the total impedance RL of the tuned circuit is 2.
0 Ml.
Li = ferrite bead Available power gain at 200 Mc/s in the circuit above At f = 100 Mc/s G = 13 dB > 10 dB The available power gain is defined as G.
- 0.
073$ 30 wcib (mA/V) 7Z0166l-1.
6.
ajb.
Me...


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