List of Replaceable Parts
Service Centers
5
5-23
Table 5-6. A5 Preamplifier PCB Assembly
Reference
Designator Description
Fluke
Part No.
Total
Quantity
C1, C2 Capacitor, CER, 100 pF, ±2 %, 100 V, COG 512848 2
C3, C5, C6 Capacitor, CER, 0.22 µF, ±20 %, 50 V, Z5U 309849 7
C4 Capacitor, Variable,1 – 42 pF, 750 V, Glass 758029 1
C7 Capacitor, CER, 1800 pF, ±5 % 50 V, COG 528547 1
C12, C15 Capacitor, TA, 10 µF, ±20 %, 20 V 330662 2
CR1, CR2, CR6 h Diode, SI, BV = 75 V, IO = 150 mA, 500 mW 203323 3
CR3 – CR5 h Diode, SI, BV = 20.0 V, IO = 50 mA, 250 mW 375907 3
E1, E2, E3 Jumper, Wire, Non-insulated, 0.200 CTR 816090 3
H1 Screw, Machine, SEMS, PH, P, Steel, 6-32, 0.250 178533 4
K1, K2 Relay, Reed, 1 Form A, 4.5 V dc 424408 2
MP1 Spacer, Swaged, Round, Brass, 6-32 x 0.812 306804 4
MP2 Shield, Preamplifier 486001 1
MP3 Spacer, Switch Standoff, Polyethylene, 0.094 285353 2
Q1 h Transistor, SI, N-JFET, Hi-Voltage, TO-92 393314 1
Q2 h Transistor, SI, NPN, Dual, TO-5 478099 1
Q3 h Transistor, SI, NPN, Small Signal 329698 1
R1, R2 Resistor Set, 1 k; 98.5 k 502625 1
R3 Resistor, Variable, CER, 500 Ω, ±20 %, 0.5 W 267849 1
R4 Resistor, MF, 60.4 k, ±1 %, 0.125 W, 100 PPM 291419 1
R5, R7 Resistors, 301 k Set 502671 1
R6 Resistor, Variable, CER, 2 k, ±20 %, 0.5 W 267864 1
R8 Resistor, MF, 215 k, ±1 %, 0.125 W, 100 PPM 289470 1
R9 Resistor, MF, 1 k, ±, 0.125 W, 100 PPM 168229 1
R10, R20 Resistor, CF, 100 k, ±5 %, 0.25 W 348920 2
R11, R12
1
Resistor, MF, 100.03 k, ±0.1 %, 0.125 W, 25 PPM 291088 1
R13
2
Resistor, Factory Selected - 2
R14 Resistor, MF, 100k, ±1 %, 0.125 W, 100 PPM 248807 1
R15, R25 Resistor, MF, 392 Ω, ±1 %, 0.125 W, 100 PPM 260299 2
R16 Resistor, MF, 10 k, ±1 %, 0.125 W, 100 PPM 168260 1
R17, R18 Resistor, CF, 10 Ω, ±5 %, 0.25 W 340075 2
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