681 capacitor value

The code 681 reads as 68 × 10¹ pF: 680 pF, which is the same as 0.68 nF or 0.00068 µF.

The value in each unit

680pF

0.68nF

0.00068µF

Open 681 in the capacitor code calculator →

With a tolerance letter

Marking	Tolerance	Minimum	Maximum
`681J`	±5%	0.000646 µF	0.000714 µF
`681K`	±10%	0.000612 µF	0.000748 µF
`681M`	±20%	0.000544 µF	0.000816 µF

Other ways it's marked

On schematics and parts lists, the same capacitor appears as 680p, 0.68 nF or 0.00068 µF.

Where it's used

Values below 1 nF are typical in radio circuits, oscillators and high-frequency filters, usually as C0G (NP0) ceramic capacitors, which stay stable with temperature.

Nearby codes

← 471 = 470 pF 102 = 1 nF →

Capacitor code chart →

Frequently asked questions

What is the value of a 681 capacitor?

680 pF, the same as 0.68 nF or 0.00068 µF.

Is 681 the same as 680p?

Yes. 681 is the 3-digit code and 680p is the letter code for the same 680 pF.

What does the letter after 681 mean?

It's the tolerance: 681J is ±5%, 681K is ±10% and 681M is ±20%.

Does the code 681 show the voltage?

No. The voltage is printed separately (such as 50V, or a code like 2A, which means 100 V) or only given in the datasheet. Replace it with a capacitor rated for the same voltage or higher.