Made in USA — San Luis Obispo, CaliforniaShips Same DayShips Same DayPurchase Orders Accepted1,000s of Kits in Classrooms NationwideDigital Lab Access Included

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Reusable, no-soldering electronics kits with a complete printed curriculum and free digital platform access. Every kit works with the same 9V power supply.

1,000+ classrooms equipped

6 products in the lineup

~$2 per student / year

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1634 products

Classroom Flagship Most Popular

MC1-SET Classroom Set of 32 unique REUSABLE solderless experiment kits exclusively from MR CIRCUIT.

MC1-SET · Classroom System

The complete Lab 1 curriculum
in one order.

32 unique, individually-bagged reusable experiment kits — MC1-00 through MC1-31 — with the full printed manual, free digital platform access, and everything a class needs to build real circuits from day one.

32 experiment kits 34 lesson plans included No soldering Free digital platform Reusable year after year

$164· ~$2/student/year

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Individual Labs

1633 products

270k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 270k Ohm 5% Carbon Film Resistors - (Pack of 5)

27k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 27k Ohm 5% Carbon Film Resistors - (Pack of 5)

2k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 2k Ohm 5% Carbon Film Resistors - (Pack of 5)

3.3 Meg Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 3.3 Meg Ohm 5% Carbon Film Resistors - (Pack of 5)

3.3k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 3.3k Ohm 5% Carbon Film Resistors - (Pack of 5)

3.9k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 3.9k Ohm 5% Carbon Film Resistors - (Pack of 5)

300 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 300 Ohm 5% Carbon Film Resistors - (Pack of 5)

300k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 300k Ohm 5% Carbon Film Resistors - (Pack of 5)

33 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 33 Ohm 5% Carbon Film Resistors - (Pack of 5)

330 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 330 Ohm 5% Carbon Film Resistors - (Pack of 5)

330k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 330k Ohm 5% Carbon Film Resistors - (Pack of 5)

33k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 33k Ohm 5% Carbon Film Resistors - (Pack of 5)

39 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 39 Ohm 5% Carbon Film Resistors - (Pack of 5)

390 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 390 Ohm 5% Carbon Film Resistors - (Pack of 5)

390k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 390k Ohm 5% Carbon Film Resistors - (Pack of 5)

39k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 39k Ohm 5% Carbon Film Resistors - (Pack of 5)

3k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 3k Ohm 5% Carbon Film Resistors - (Pack of 5)

4.7 Meg Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 4.7 Meg Ohm 5% Carbon Film Resistors - (Pack of 5)

4.7 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 4.7 Ohm 5% Carbon Film Resistors - (Pack of 5)

4.7k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 4.7k Ohm 5% Carbon Film Resistors - (Pack of 5)

47 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 47 Ohm 5% Carbon Film Resistors - (Pack of 5)

470 Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 470 Ohm 5% Carbon Film Resistors - (Pack of 5)

470k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 470k Ohm 5% Carbon Film Resistors - (Pack of 5)

47k Ohm 5% 1/4 Watt ±5% carbon film resistors

1/4 Watt tan 47k Ohm 5% Carbon Film Resistors - (Pack of 5)

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