Product Overview
Twin Industries 8100-45 FR4 General Purpose Prototyping Board 4x5 Inch
Condition
Unused new old stock (NOS). Preserved in original packaging with sealed retail header card. Inspection shows clean plating on all through-holes with no oxidation or solder traces.
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Product Overview
Twin Industries part number 8100-45 is a general-purpose prototyping board engineered for circuit development, point-to-point wiring, and hardware prototyping. Measuring 4.0 inches by 5.0 inches on standard 0.062-inch FR4 epoxy glass composite, this board features a standard 0.100-inch grid with 0.037-inch plated-through holes and an integrated single power or ground plane on the reverse face.
Key Features
- 0.100 in x 0.100 in (2.54 mm x 2.54 mm) grid spacing for standard DIP ICs and discrete components
- 0.037 in diameter plated-through circular contact holes with individual solder pads
- Single ground or power plane pattern on the reverse side for shielding and low-impedance returns
- Durable 0.062 in (1.57 mm) FR4 epoxy glass substrate material
- Board dimensions: 4.0 in x 5.0 in (101.6 mm x 127.0 mm)
Applications
- Laying out analog signal conditioning stages and discrete sensor interfaces on a grounded backplane
- Building one-off interface cards, logic breakout circuits, and industrial control test jigs
- Assembling audio filter prototypes, Eurorack module subassemblies, and maker bench experiments
Frequently Asked Questions
What is the hole pattern and grid pitch of the 8100-45?
The board uses a standard 0.100-inch by 0.100-inch (2.54 mm) grid spacing with 0.037-inch plated-through holes, matching standard dual inline package (DIP) IC pinouts and standard leaded components.
Does this board include an integrated ground or power plane?
Yes. The board incorporates plated-through holes with isolated pads on the component surface and a continuous single plane on the reverse side, useful for power distribution or ground shielding.
Why buy this individual board instead of a mixed surplus lot?
You receive the exact, documented Twin Industries part number shown in the photographs, sealed in its original retail package with pristine solderability and flat FR4 stock, rather than unbranded, warped, or partially cut boards from an assorted grab-bag. Orders ship from our Idaho warehouse for an $8 flat rate, ship free once your cart passes $28, and dispatch the same or next business day.
Nothing steadies an analog prototype quite like building over a real copper plane. Plug in the iron, set your spacing, and wire your circuit with zero guesswork.
