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AOShop Ge semiconductors Small-signal PNP transistors NKT214F, OC57, OC59, 2N1377, 2N525 £1.00 Low-noise PNP transistors GET106 £2.50 Small power PNP transistors AC153, AC153K, AC188 £1.50 Small power NPN transistors AC176, AC141K £2.00 High-voltage PNP transistors OC77, CV7001 £1.50 TO3 PNP power transistors OC22, CV7054 (OC23), OC25, OC35, OC36, AD143, AD149, AD161, AD162 £2.00 AD140 £3.50 AD149, AD161/2 matched pair £5.00 RF PNP transistors OC41, OC42, 2SA12, 2SA53,AF124, AF178, GET872A £1.50 NPN transistors OC139, OC140, ASY73 £2.00 Diodes CV7049 (OA10), CG92 (OA91) £0.50 Si semiconductors Diodes ZC5800 RF Schottky £0.20 Low-noise silicon transistors BFW16A, 2SC3071, 2SC3068, 2SA1016K, 2SC2362K, 2SA970BL £1.50 2SC2204, 2SD655, BC550C £0.50 ZTX651 £0.30 ZTX751 £0.50 RF transistors (suitable for Theremin) BF199 £0.50 Audio power MOSFETs Exicon 10N20, 10P20 £6.50 Hitachi 2SJ99, 2SK343 £3.50 Hitachi 2SJ56, 2SK176 £8.50 JFETs BFW11, BFW10, TIS73L, J177, J113, U1994, U1898, 2SJ176, J201 £1.00 J175, J176, J112, J111, 2N3820, 2N5457, BF244, 2N5460, J230 £0.60 Small power output/driver transistors 2SB649A, D669A, 2SA1208, 2SC2910, MJE253G, MJE243G, 2SA1725, 2SC4511 £1.20 BD139,BD140, BD135, BD136, BD435, BD436, MPSA63, BCV46 £0.50 MOSFETs ZVP2106A £0.30 Dual-gate 3SK45, BFS28 £1.50 Metal-cased transistors BCY71 £0.30 Amplifiers LM318 high-speed op amp £0.35 µA709 metal-cased op amp £2.00 5534H metal-cased op amp £3.00 LM384, TDA2030A, TDA2050V £1.50 TAA435 (Mullard power amp driver for AD161/AD162) £1.20 Synthesiser ICs The home for specialist audio, analogue and historic components – provided by Jake Rothman, PE’s Audio Out columnist. The AOShop is your best bet for classic analogue ‘NOS’ (new old stock) components, including all parts for Audio Out projects and designs. CA3280 VCA/VCF £4.00 LM13600/ LM13700 VCA/VCF £2.00 CA3086 transistor array £1.00 PT2399 echo/delay £1.50 Dual transistors 2N2639, 2N2223, 2N2910 (NPN) £4.00 E401 (JFET Moog) £4.00 2SK2145-Y dual JFET £0.80 2N5564 JFET £8.00 HN3C51F, HN3A51F £1.00 DMMT3904/6, HN1A01F, HN1C01F £0.50 Loudspeakers PE Mini-Monitor Volt PE165 6.5-inch woofer (each) £85 Morel MDT29 tweeter (each) £25 Kit pair of PE165/MDT29 plus Volt crossover parts and PCBs £299 Monacor DT-28N tweeter (each) £35 Vifa 19mm BC20SC15-04 tweeter (each) £15 Volt crossover inductors 1.2mH, 1.5mH, 2mH, 2.7mH, 0.5mH (tapped at 0.3mH) (each) £5.85 Fully assembled and tested high-quality speaker prototypes – ask for details LS3/5As and other similar speaker systems (pair) £200-£350 Fully tested reclaimed speakers Vifa BC14 5-inch woofer (each) £10 Vifa TC26 1-inch tweeter (each) £10 Low-price speakers Philips 4-inch 4070 £2.00 EMI 10x6-inch, 30Ω Alnico £7 64mm 64Ω neodymium £1.20 Capacitors Note ‘10/63’ denotes ‘10µF 63V’. Polyester 3.3/100, 4.7/250, 4.7/63 £1.00 5.6/63, 8.2/63, 10/63 £2.00 Mullard ‘Mustard’ C296 0.22/400 £2.00 Polycarbonate Axial 2.2/63 1%, 4.7/160, 6.8/63 £1.00 Radial 6.8/160V, 10/63 £2.00 Reclaimed 22/63 £2.00 Polystyrene Philips 1% 4.7nF/160, 6.2nF/500, 12nF/63, 22nF/63, 110nF/63, 24nF, 2nF £1.00 RIFA 1% 100nF/100, Suflex 90.9nF 0.5% £2.00 Suflex 2.5% 10nF/63 (rad. or ax.) £0.50 Radiation resistant Siemens cellulose acetate MKL 2.2/25 £0.80 Electrolytic – Mullard blue 017 series 10/25, 22/25, 100/10 £0.50 150/40, 470/40, 1000/40 £1.00 Tantalum – axial metal cased 22/50, 47/35, 68/25, 100/20, 120/10, 150/16, 220/10, 330/6 £2.00 22/35, 33/35, 47/20, 68/15, 100/10, 150/6 £1.25 4.7/50, 6.8/35, 10/25, 10/35, 22/15 £1.00 That/dbx 2180 VCA/VCF £6.00 CA3080 VCA/VCF (vocoder) £2.80 Practical Electronics | May | 2026 Axial moulded-case tantalum Kemet axial 6.8/10 £0.30 Kemet radial 33/10 £0.40 STC radial 100/20 £1.50 Tantalum bead 22/50 £1.00 470/3 £2.00 680/6.3 £3.00 Wet tantalum 220/25 axial £3.20 Castanet button 140/30, 470/3 £3.20 Hughes 540/10 £3.20 Bipolar Hermetic bipolar tantalum 16/35 £3.20 Elcap axial 10/50 £0.50 Generic radial 100/16, 470/35, 100/ 63, 22/35, 4.7/35, 220/16 £0.50 Philips solid-aluminium (axial) 121/123 47/16 £1.00 330/6.3 £2.00 100/35 £4.00 Philips Pearl 122 series (radial) 10/16 £0.30 Silvered mica (radial) 1nF/500 1% £1.00 Trimmer capacitors Vishay plastic-film 4-40pF £0.80 Vishay plastic-film 5.5-45pF £1.00 Vishay plastic-film 5-80pF £1.20 Vishay plastic-film 10-250pF £2.00 Mica 1-12pF, 2-40pF £1.00 Audio transformers and inductors Eagle transformers LT44, LT722 driver, LT700, LT723 500Ω output £2.50 LT30 500mW output £3.50 5:1 interstage (fuzz box) £1.50 Repanco T/T3 splitter transformer £4.00 CH2 5mH RFC £2.00 Balanced output transformer Vigortronix 600Ω VTX-101-007 £10 Vigortronix 600Ω VTX-101-3001 £10 Vigortronix 600Ω VTX-101-3002 £15 Gardners 150Ω £10 Reclaimed BBC LL74/MPC nickel core 600Ω £12 Low-level 1:1 600Ω (modem) £2 Reclaimed mic input transformer £15 Inductors 82µH, 4.7mH, 100µH, 270µH, 10µH, 14µH (low Z) £0.50 4-inch ferrite rod with MW and LW windings £3.00 Special resistors Bourns wire-wound trimmer 5kΩ 3059 JM panel-mount £2.00 Thermistor RA53, R13 £4.00 A13 £2.00 Thermistor CZ1, CZ6 £1.50 Holco H2 2.2MΩ 1W, 1% £1.00 Welwyn 1GΩ 2W £1.00 5k Bourns 3321H cermet trimmer £0.50 Potentiometers Bourns 81 25kΩ lin cermet £2.00 25kΩ lin, 5kΩ lin cond. plastic £3.00 Bourns 91 10k dual-gang lin or log £10.00 Plessey moulded-track 5kΩ log with switch £3.00 50kΩ A/log £3.00 Mil 250kΩ lin dual £5.00 Alpha 16mm 4.7kΩ A/log £0.80 220kΩ A/log £0.80 10kΩ lin centre-detent dual-gang £1.50 Allen Bradley J series/Honeywell 10kΩ lin 1 million cycles £5.00 Blore Edwards AB 45 dual 5kΩ A/log with switch £3.50 Alps RK9 dual-gang 5kΩ RD law £4.00 Alps 50k log tapped motor. stereo £5.00 BI P260 500kΩ log conductive plastic 1 million cycles £2.00 Colvern wire-wound 100kΩ or 50kΩ dual-gang 3W £5.00 Mil Spec hermetic 10Ω £8.00 Miscellaneous PCBs All-pass Filter PCBs (three) £4.00 .. Rotary Switch (AO0626ROT) £1.50 .. Pot Board (AO0626POT) £1.50 Silent Stomp Switch (pair) £4.00 Penta-fuzz Bender (PE, Feb26) £3.00 Pre-driver (PE, Jan26) £3.00 Pre-driver jack bd (PE, Jan26) £1.50 Fuzz Box (PE, Nov25) £3.00 Fuzz Box jack bd (PE, Dec25) £1.50 Dual JFET Buffer (PE, Oct25) £2.00 Mosfet Buffer (PE, Oct 2025) £2.00 Dual Mosfet Buffer (PE, Oct25) £2.00 Cascode Amp (PE, Sep 2025) £2.00 Cascode PS (PE, Sep 2025) £2.00 Pocket Theremin (EPE, 1996) £2.00 Elysian Theremin (EPE, 1996) £6.00 Synth VCF, VCO (EPE, 2017) £3.00 48V PSU (EPE, 2019) £3.00 SMT dual transistor adapter £0.40 Relays STC hermetic 4190 24V DPDT £4.00 Switches Blore Edwards/Plessey MH1 4-pole 3-way £3.00 Elma 01 2-pole 6-way £6.00 3PDT guitar pedal stomp switch £2.50 Valves EC88, PCL84 £3.00 Contact Jake Rothman Manchester House Market Street, Craven Arms Shropshire SY7 9NN (visit by appointment) +44 (0)1597 829102 jrothman1962<at>gmail.com Minimum order £5.00 inc post Payment PayPal, bank transfer, cheques (payable to “J Rothman”, UK pounds only). 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