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The following pages list surplus component and obsolete stock we have for disposal, all are brand new components but may be some years old, indeed there are some parts here that you can no longer buy elsewhere! Hard to find electronic parts, excess inventory, obsolete stock, and surface mount components. All are presented with a corresponding data sheet or photo of the actual component.

To make a purchase or request further information, please us.
All prices are per item plus postage in U.K. pounds, £2.50 minimum order + postage + fees, payment by PayPal with your order. For international orders please enquire about shipping costs and exchange rates.

If known, the manufacturer or supplier is listed in the item description (FEC: = Farnell, RS: = RS Components, Murata, Panasonic, Etc). N.O.S. = New Old Stock, these are new and unused parts in their original packing where possible, but may have bent leads, and the packing may be degraded (E.G. bandolier tape fed components). All semiconductor parts are stored and supplied in anti-static packaging.

Our search facility (below left) will allow you to quickly find your part - if we have it, and display the searched for term highlighted on any relevant page. Eg. a search for "74LS" will return a link to the Logic devices page, with all the "74LS" terms on that page highlighted like this 74LS, a total of two pages. Note - the search facility globally searches the whole - www.soemtron.org - website so you may also get returns from some of the non component disposal pages.

Capacitors	Electrolytic 0.47uF to 10,000uF, Ceramic plate 22pF to 22nF, Tantalum bead, Multi-layer Ceramic, Metalised polyester ......
Connectors IC sockets	DIP sockets 8 pin 0.3" to 40 pin 0.6" in face wipe and turned pin styles, DIN41612 32 and 64 pin, Molex KK series headers and shells, 4 pin Lemo plugs, filtered IEC inlets, PLCC sockets, IEEE488 sockets, transition headers, screw terminal sockets and PCB headers ......
Linear devices	Op-amps, comparators, over voltage sensing, crowbar circuits, differential amplifiers, colour TV synchronisation, analog multiplexers, analog switches, voltage to frequency and frequency to voltage converters, low and micropower op–amps, 4–20mA transmitters ......
Logic devices	74 74HC and 74LS series, 4000 4500 14000 series, counters, drivers, oscillators, gates, latches, RS232, SN75 series, multiplexer de–multiplexer, comparators, converters, rate multipliers, multivibrators, BCD potentiometer, Schmitt trigger, inverters, shift registers, bridge drivers, data selectors, line receiver, display drivers, 8Kx8 NV Ram, Octal D type flip–flop tri–state, octal magnitude comparator .....
Misc	Capacitor clamps / clips, BCD thumb–wheel switches stop pins and end plates, Solder 63/37, DP / SP relays and sockets, lamps, studding, switches, buss bar for wire wrap pins, fans, TO–5 pin spreaders, fuses .....
Regulators / PSU's	Voltage regulators -5V -12V -15V +5V +15V, adjustable regulators, precision regulators, DC-DC supplies ......
Resistive	Potentiometers single and multi turn, resistors carbon / metal film, aluminium clad power resistors, push button potentiometers, vitreous wirewound, resistor networks, Welwyn, Spectrol, Bourns, Vishay, Citec, 422PW trimmers / potentiometers, CFR25, MRS25, W21 / W22 wirewound, PR02, thick film conformal, Welwyn RC55, Bourns 4600 .....
Transistors Diodes Optos	Bridge rectifiers 1.5A to 35A, transistor pads TO5 TO18 bush TO220, NPN and PNP power transistors 0.5A to 10A 60V to 300V, signal transistors, switching transistors, zener diodes 2.7V to 169V, Darlingtons 4A and 10A at 80V, red and green ultra bright LEDs, seven segment displays, opto isolators, TO–5 pin spreaders, Schottky rectifiers, transistor mounting pads .....
Valves	Valves (tubes) for radio and television applications, new in original boxes (N.O.S.). All our valves are untested. DM160, ECL80, PCF80, PL81, 6SJ7, 6/30L2, Mullard, Zaeux, Mazda, Elpico, Marconi, Pinnacle, Brimar, Kalotron and Raphone .....