XTBR Parts List for either XTB-523 or XTB-232 PCB

Note: Alternate part numbers for XTB-232 PCB are in ( )

Item Qty Designation Value Attributes Type lead spacing Mouser #
1 1 C1 .01uF 160VAC polyester 0.3 5989-250V.01-F
2 1 C8 .22uF 200VAC polyester 0.4 to 0.6 667-ECQ-E4224KF
3 2 C2, C3 330pF 1% 100V ceramic 0.1 80-C315C331F1G
4 1 C5 .01uF 100V ceramic 0.1 or 0.2 80-C322C103K1R
5 1 C9 .1uF 50V ceramic 0.1 or 0.2 80-C322C104M5U
6 1 C6 .27uF 100V ceramic 0.2 581-SR301C274KAA
7 2 C11,C12 .47uF 50V ceramic 0.2 80-C322C474M5U
8 1 C4 10uF 16V tantalum 0.1 or 0.2 80-T350E106K016
9 1 C7 10uF 35V tantalum 0.1 or 0.2 80-T350G106K035
10 1 C10 3300uF 25V electrolytic radial 16x25 high 667-ECA-1EM332
10 1 R11 (R10) 220 1/4W carbon film 291-220-RC
12 1 R4 1k 1/4W carbon film 291-1K-RC
13 2 R5, R7 10k 1/4W carbon film 291-10K-RC
14 1 R6 47k 1/4W carbon film 291-47K-RC
15 1 R2 100 or 287 1% 1/4W carbon film (see note below) 271-100-RC
16 1 R1 1.5K or 3.00K 1% 1/4W carbon film (see note below) 271-3K-RC
17 1 R3 150K or 62.0K 1% 1/4W carbon film (see note below) 271-150K-RC
18 1 R8 220 1/4W composition 791-RC1/4-221JB
19 1 R9 100K 1/2W carbon film 293-100K-RC
20 2 L1, L2 8.2uH .028 ohm Miller 5800 < 0.3 diameter 542-5800-8R2
21 1 X1 12.6 VAC 2.4-watt Signal split bobbin PC Digikey 595-1160-ND
22 3 D4, D5, D6 BAT43/BAT85 STMicro schottky 511-BAT43
23 4 D10-D13 (D8-D11) 1N4004 Fairchild rectifier D0-41 512-1N4004
24 2 D1,D2 1N4148 Fairchild signal 512-1N4148
25 1 D3 1N5236B Fairchild 7.5V zener 512-1N5236B
26 1 LED LED red/green Lite-On T 1 3/4 (5mm) 859-LTL-293SJW
27 1 MOV V130LA2 130V Varistor 0.2 576-V130LA2P
28 1 Q1 IRL620 Fairchild N-channel TO-220 512-IRL620A
29 1 U1 LM318 TI op-amp 8-pin DIP 595-LM318P
30 1 U2 PIC16F1823 Microchip uC 14-pin DIP PIC16F1823-I/P
31 1 U6 78L05 5V reg. TO-92 512-LM78L05ACZ
32 1 U2 socket Socket Aires Machined 14-pin DIP 535-14-3518-10
33 1 J2 (prgm header) Header FCI 5-pin SIP (snap@5) 649-78511-236
34 1 F1 Pico fuse 1A SB Littelfuse (Wickmann) 576-3821100000
35 1 case GS2415 white Polycase machined cover mod $ @ 25 pcs
36 1 PCB PCB XTB-523 (custom - Jeff Volp)
37 1 #22 clear sleeving 2" long 602-TFT20022-100
38 1 3210C Cliplite clear 7mm hole 593-3210R
39 1 case label XTBR self-stick (custom - Jeff Volp)
48

Note: This unit incorporates AGC to raise its detection threshold above the background noise level. A change was made to narrow the input amplifier bandwidth and increase its gain for even better performance. The new values are 100 ohms, 1.5K, and 150K. (The 1.5K can be 5%.)