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HOPCO Surplus Electronics

COMPONENTS

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We have MANY new components available. What's shown here is just a beginning. We'll be listing more all the time. So if you don't see what you're looking for here, please EMAIL us and ask.

Our prices are WAY BELOW any other source. If you can find a better price, show us and we'll beat it if at all possible!

Quantities vary. Some we have just a few, others we have thousands.

Our goal is to help the R&D engineer and experimenter by providing rock bottom prices on useful parts.

CONNECTORS

• RF
  • NEW   BNC Coax Connectors, Panel Mount Male (w/ hardware) $0.75ea [Qty: 100 approx]

• MORE TO COME

INTEGRATED CIRCUITS   Price: 50% of DigiKey (or best) List Price

• Digital: 74xx, 74LSxx, etc [Qty:varies]
  • 74xx - older date codes but perfect
  • 74LS74
  • 74LS364
  • 74Sxx
  • many many many many more...

• Analog: Op Amps, RF, Audio Amps, etc [Qty:varies]
  • TA7205P Toshiba Audio Amplifier (200 available) $2.50 each
    Photo
    Data
  • LM324
  • CA3098 (cannot locate)
  • etc.

• Miscellaneous: Voltage Regulators, Timers, etc [Qty:varies]
  • 555
  • TL7705
  • etc.

• MORE TO COME

RESISTORS

• 1/4W, 5% carbon film or composition type - NEW [Qty:1000's]
  Values: 27, 47, 270, 15k, 47k, many many more...please EMAIL your needs.

• Resistor Networks - NEW
  • 20c each or 25/$4.00 or 50/$7.00 or 100/$13.00 or 250/$25.00
    Unique 10-position ceramic SIP networks with two separate sections.
    One section with common (pin-1) and four 2.2k resistors, the other section with common (pin-10) and three 2.2k resistors.
    Pin-6 is missing. Use as seven (7) 2.2k ohm pull-up resistors, or two sections of four (4) and three (3) resistors, respectively.
  • More...

• MORE TO COME

CAPACITORS

• Large Electrolytics - RFNE
  • 23,400 ufd, 75v - High Quality Tubular, 85 deg-C rating, -10/+75%, 95v surge. [Qty:15] Photo SOLD
  • 5,000 ufd, 100v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:2 only]
  • 34,000 ufd, 50v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:1 only]
  • 200 ufd, 200v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:2 only]
  • 3,400 ufd, 200v - High Quality Computer Grade Electrolytic Tubular Cap
  • 38,000 ufd, 20v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:1 only]
  • Others...
• Medium Electrolytics - Used
  • 2,900 ufd, 250v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:1 only]
  • 2,500 ufd, 200v - High Quality Computer Grade [Qty:many]
  • 3,300 ufd, 200v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:2 only]
  • 21,000 ufd, 50v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:10 only]
  • 6,500 ufd, 18v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:1 only]
  • 3,900 ufd, 10v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:1 only]
  • 40,000 ufd, 6.3v - High Quality Computer Grade Electrolytic Tubular Cap [Qty:1 only]
  • Others...
• Motor Starting Caps - Inquire

• MORE AVAILABLE... INQUIRE WITH YOUR NEEDS PLEASE

INDUCTORS

• Pot Cores
  Ferrite, no bobbins available, but obtainable from Ferroxcube.
  Sets consisting of pairs of cores.
  
  Ferroxcube cores
  • 2 - 4229 3C8 (no gap)
  • 4 - 4229 3B7 (no gap)
  • 33 - RM8 3B7 A630 (630 nH/N^2, gapped)
  • 48 - 1811 P 3B7 (no gap)
  • 7 - 1107 A250 3B7
  • 4 - 1408 PA250 3B7
  • 7 - ? ~1/2" dia 3D3 (no gap)
  
  Magnetics, Inc. cores
  • 45 - F42616 SG02 F58
  • 29 - F43019 SG02 F40
  • 29 - F43622 SG04 F54
• MORE TO COME

SEMICONDUCTORS

• Transistors - NEW
  • 2N1301 (individiually boxed) [Qty: 10] $1.00 ea or $7.00/lot SOLD
  • 2N2219 Motorola Individually Sealed Containers [Qty: 17] $0.50 ea or $7.50/lot
  • 2N3390 [Qty: ??] 3/$1.00
  • etc.

• Diodes - NEW
  • Zener Diode - 5.1v, 1/2w - ECG 5010A [Qty: 12] 2/$1.00
  • Zener Diode - 5.6v, 1/2w - ECG 5011A [Qty: 12] 2/$1.00
  • 1N2820B (24v Power Zener) - TO-3 Power, RFNE [Qty: 100] $1.00 ea
  • TO-3 mica washers - NEW - pkg of 25/$2.00
  • etc.

• MORE TO COME

WIRE & CABLE

• MORE TO COME

MISCELLANEOUS

• Plastic Strip - NEW [Qty:100's] 2/$1.00
  These are clear plastic strips originally made as insulators.
  Useful for many insulating and construction applications.
  Protective film still on them.
• Circuit Breakers - NEW [Qty:100?] $1.50
  ETA brand magnetic action. Model 43-400- -L10
  Black, spring-loaded reset button, 3/16" quick tabs.
  Size: 9/16 x 1-5/8 x 2" approx plus button & tabs.
  Rated 0.6A trip current, but are adjustable.
  Panel mount in 3/8" round hole. Hardware included.

• MORE TO COME