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, and more. Soemtron.org for those hard to find or obsolete electronic parts, excess inventory, components and surface mount parts.
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). N.O.S. = New Old Stock, new unused parts in their original packing where possible, but may have bent leads, the packing may be degraded (E.G. bandolier fed components). All semiconductor parts are stored and supplied in anti-static packaging. All components are supplied untested as we do not have any facilities to do so.
Corona virus - (Covid–19)
During this difficult time and until Government advice changes with regard to small businesses, Soemtron will remain open as usual for our customers to order parts which will be shipped as normal. We would advise you though to upon receipt, disinfect any packages we have sent just in case it has been contaminated in the postal system. Exercise care everyone, observe all current guidance about social distancing, hand washing and general health awareness and look out for others in our community.
For further information on Covid–19 see the NHS and Government websites.
Please note that we will be closed from the 24th of May 2022 to the 13th of June 2022 inclusive.
Should you have any non–urgent parts requirements during this time please send us an email and we will process them on the 14th of June 2022, our apologies for any problems this might cause.
|Comparators | Multiplexers - switches | Miscellaneous | A/D|
|F1885||AD583K (LF198/LF298/LF398) sample and hold gated op–amp (DIP14)||1||£5.00|
|A1215||CA3140E 4.5MHz op–amp (DIP08)||49||£0.60|
|A1280||ICL7611DCPA 1.4MHz CMOS op–amp (DIP08)||10||£1.00|
|MS45||INA102KP High accuracy instrumentation amplifier Burr Brown (DIP16)||5||£5.00|
|C2107||LM318E Single high performance op–amp (DIP08)||4||£1.00|
|A1214||LM324N Quad op–amp (DIP14)||48||£0.25|
|C2136||LM348 Quad 1Mhz op–amp (DIP14)||8||£0.20|
|G1213||LM733CN Differential amplifier (DIP14)||15||£3.00|
|B1624||OP07CN Precision op–amp (DIP08)||41||£1.00|
|C2270||OP37GP High speed precision op–amp (DIP08)||4||£2.00|
|B2055||OP400GP Quad low offset low power op–amp (DIP14)||14||£6.00|
|B2077||OP77G Ultra low offset op–amp (DIP08)||6||£0.50|
|OP081CP JFET-Input operational amplifiers (DIP08)||6||£0.25|
|B2234||OP90GP Single micropower op–amp (DIP08)||14||£2.50|
|C2331||OPA445AP High Voltage FET–Input operational amplifier BB: (DIP08) similar FEC:1212312||4||£5.00|
|C5||OPA548 High voltage high, current operational amplifier RS:652-5678 or FEC:1564885 (7 pin TO220–7b)||5||£10.00|
|B1721||TL064CN Quad op–amp (DIP14)||12||£0.40|
|TL081CP JFET–Input operational amplifiers (DIP08)||4||£0.25|
|A1200||UA741CP General purpose op–amp (DIP08)||90||£0.30|
|Amplifiers | Multiplexers - switches | Miscellaneous | A/D|
|B1749||ICL8211CPA Programmable voltage detector (DIP08)||4||£3.00|
|A1201||LM311N Single voltage comparator (DIP08)||150||£0.20|
|B1771||LM339N Quad comparator (DIP14)||77||£0.50|
|C16||LM393 Dual comparator ST: (SO14)||94||£0.10|
|C18||LP339M Quad comparator N: (SO14)||75||£0.20|
|C11||TLC372C Dual differential comparators ST: (SO08)||119||£0.30|
|MF3||TLC372C Dual differential comparators Ti: (SO08) reeled||2250||£0.30|
|Amplifiers | Comparators | Miscellaneous | A/D|
|Multiplexers - Switches|
|C1884||AD7501KN 1–8 analog multiplexer Analog Devices (DIP16)||3||£10.00|
|MS29||CD4051BCN 8–Channel analog multiplexer de–multiplexer, similar to FEC:1014040 (DIP16)||22||£0.50|
|MZ2||CD4066BCN Quad bilateral switch National Semiconductor, similar RS:528-404 (DIP14)||1||£0.25|
|B1673||DG308ACJ Quad CMOS analog switch (DIP16)||78||£2.00|
|C1974||HCF4051BE 8–Channel analog multiplexer de–multiplexer (DIP16)||20||£0.50|
|B1668||HEF4052BE Dual 4–Channel analog multiplexer de–multiplexer (DIP16)||51||£0.50|
|B1672||MC14551BCP Quad 2–Channel analog multiplexer de–multiplexer (DIP16)||7||£1.50|
|Amplifiers | Comparators | Multiplexers - switches | A/D|
|B1674||AD650JN V–F and F–V converter (DIP14)||2||£12.50|
|A1395||ICL7660CPA Switched capacitor voltage converter (DIP08)||11||£0.75|
|C2271||ICL7662OPA CMOS voltage converter Harris (DIP08)||3||£2.50|
|H1863||ICL8069CCZR 1.23V bandgap reference ICL8069, RS:428-969 (DIP08)||17||£0.80|
|H1666||LH0070-0H 10V reference (TO5)||2||£7.50|
|C15||MAX761CSA DC–DC step–up converter 12V, FEC:1673220 (SO08)||45||£4.00|
|A1387||MC3423P1 Over Voltage Crowbar Sensing Circuit (DIP08)||45||£0.75|
|C13||REF192GS Micropower voltage reference, FEC:9605207 (SO08)||36||£1.50|
|F29||LM188N Video synch separator RS:533-9690 (DIP08)||2||£1.00|
|K1501||TDA2593 Colour TV synchronisation and horizontal deflection (DIP16)||2||£10.00|
|MX31||XTR101AP 4–20mA precision low drift two wire transmitter Burr Brown, RS:647-615 or FEC:1652277 (DIP14)||2||£12.00|
|C2283||XTR110KP 4–20Ma transmitter, Precision voltage to current converter Burr Brown, RS:647-621 or FEC:1353888 (DIP16)||1||£12.00|
|S46||LM35DZ precision temperature sensor, was FEC:409-091, is RS:533-5907 FEC:9488200||1||£0.50|
|D18||LTA 50P/SP1 50A/160A Hall effect current transducer Heme, PCB mount||5||£15.00|
|Amplifiers | Comparators | Multiplexers - switches | Miscellaneous|
|Analog to Digital|
|MM21||TLC2543 11 channel 12 bit serial ADC Texas Instrument, FEC:1470333 or RS:517-2087 (SO20)||15||£5.00|
Part numbers –
OP07CN, OP37GP, TL064CN, OP77G, OP081CN, OP90GP, LM318E, LM324N, LM348, OP400GP, OPA548, AD583K, LM733CN, UA741CP, CA3140E, A1280, LM311N, LM339N, LM339, TLC372C, ICL8211CPA, DG308ACJ, HCF4051BE, HEF4052BE, MC14551BCP, AD7501KN, AD650JN, ICL7660CPA, ICL7662OPA, ICL8069CCZR, LH0070-0H, MAX761CSA, MC3423P1, NE5521N, REF192GS, TDA2593, XTR101AP, XTR110KP