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Can anyone confirm what the markings on this capacitor mean?

I think it's a 560 μF capacitor, but I am used to seeing that on the first row of similar devices.

For voltage, I believe it's a 35 V device - the V matches what I see here: https://www.electronics-notes.com/articles/electronic_components/capacitors/capacitor-codes-markings.php

What is the first row, and what does the ZR denote?

Oddly labelled electrolytic capacitor:

enter image description here

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  • \$\begingroup\$ 56uF it seems. Aluminum electrolytic, SMT. Hard to get a sense of the exact size \$\endgroup\$
    – TQQQ
    Mar 21, 2022 at 18:51

3 Answers 3

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It's probably a part with similar characteristics to Nichicon ZR series, but not actually Nichicon since the number placement does not match Nichicon's datasheet.

ZR is the series V is the voltage code (35V) 56uF or 560uF is the capacitance. Compare with similar size parts with 35V rating- if it is similar or a bit smaller compared to known name brands it's likely that.

A typical 35V/470uF is 10mm dia x 10.5mm tall

A typical 35V/680uF is 12.5mm dia x 13.5mm tall

If it's in that size range it's probably 560uF.

(another manufacturer has 35V/560uF that is 10mm dia x 13mm tall)

If that's an M3 or M4 screw the capacitor is pretty large.

Both types of markings are common enough in SMT caps.

The top markings are a lot code.

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    \$\begingroup\$ Are you sure? Why not 56µF? \$\endgroup\$
    – G36
    Mar 21, 2022 at 18:55
  • \$\begingroup\$ @G36 Good point, probably 56uF unless it's huge given the voltage. Neither 560uF/35V or 56uF/35V is offered by Nichicon in their ZR series. \$\endgroup\$
    – Spehro Pefhany
    Mar 21, 2022 at 19:35
  • \$\begingroup\$ wouldn't 56uF be 566 ? \$\endgroup\$
    – Jasen Слава Україні
    Mar 21, 2022 at 21:47
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    \$\begingroup\$ @Jasen no, they're either 2+multiplier code in uF or integer uF. That's on electrolytic caps, many other types are in pF as you suggest. It's a bit of a dog's breakfast, I'm afraid. \$\endgroup\$
    – Spehro Pefhany
    Mar 21, 2022 at 21:49
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Thanks everyone for your help. I appreciate the confirmation of the voltage rating in particular, as I wasn't able to validate that.

I was able to measure the capacitance... got a reading of 599uF (in circuit). There are no other large caps on the board so it must be rated 560uF. It looks like it is 10-12mm in diameter and similar height, so right in line with the two measurements that Spehro provided.

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  • \$\begingroup\$ Unless you are using an impedance analyzer, measuring in-circuit will often give a wrong reading. \$\endgroup\$
    – qrk
    Mar 22, 2022 at 0:02
  • \$\begingroup\$ Yes I know it's not perfect. If the choices are 56*10^0 and 560, the 599 definitely seems to imply the latter. \$\endgroup\$
    – T C
    Mar 22, 2022 at 2:18
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It may be a 56 μF 35 V electrolytic capacitor with a height of 3.9 mm.

Marking codes:

  1. Value - 1st significant figure, 2nd significant figure, multiplier

    Multiplier

    0 - 1

    1 - 10

    2 - 100

    3 - 1000

    4 - 10000

    5 - 100000

    6 - 1000000

  2. Voltage

    e - 2.5 V

    G - 4 V

    J - 6.3 V

    A - 10 V

    C - 16 V

    D - 20 V

    E - 25 V

    V - 35 V

    H - 50 V

  3. Height

    ZD - 3 mm

    ZR - 3.9 mm

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