Cap markings unfamiliar

This is a small (8x3 mm) yellow axial "blob" w/hard (ceramic?) shiny exterior. Markings: FC4 9116 Presume the latter is date code. What is the value? A Google turned up nothing I could find that might identify this code. Surely tolerance markings follow the value markings...

Ideas?

Thanks,

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DaveC
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DaveC
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FC4 is most likely OEM proprietary marking. All axial ceramic caps I have come across have the value marked on them. Are you able to measure its value?

Reply to
Ross Herbert

In EU we write 1.2 Ohms as 1R2, 1.2kOhms as 1k2, 0.1 Ohms as 0R1 or R1. So obviously it's 0.4femtocaps.

Sorry.

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Gibbo

C = coulombs. It's a charged cap -- be careful, you might accidentially bleed out the 0.4 femtocoulombs! ;-)

Incidentially, 0.4fC is about 2500 electrons.

Tim

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Reply to
Tim Williams

Are you sure it's a capacitor?

Surface-mount caps are commonly marked with a two-character code, and a third character indicates the manufacturer. So for your case, "F" would be the manufacturer, and "C4" would be C=1.2, times 10^4, pF =

12000pF = 12nF. But don't count on it. That system is used where there's not enough room for more, and in the case of your part, there's obviously room for more digits. It could just as well be some abbreviation of an in-house part number.

Cheers, Tom

Reply to
Tom Bruhns

On Sun, 11 Feb 2007 16:59:54 -0800, DaveC put finger to keyboard and composed:

Flux Capacitor ?

- Franc Zabkar

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Franc Zabkar

N N N Resistor with value in three digit format. e.g. "473" Value =

47*1000 = 47k Ohms. N N N N 1 % Resistor with value in four digit format. e.g. "4752" Value = 475*100 = 47k5 Ohms. N N L 1 % Resistor with value in code, see below. L N Capacitor with value in code, see below. L N N Aluminum electrolytic with voltage rating in code then value, see table below, e.g. F47 = 0.47µF 25 Volts . N L N Aluminum electrolytic, see table below, e.g. 4E7 = 4.7µF 16 Volts. N N L Aluminum electrolytic with value in code then Voltage rating, see table below, e.g. 47D = 47µF 10 Volts. N = Number, L = Letter. Surface Mount Resistors, EIA-96 Code, only for 1% range Code Value Code Value Code Value Code Value Code Value 01 100 21 162 41 261 61 422 81 681 02 102 22 165 42 267 62 432 82 698 03 105 23 165 43 267 63 442 83 715 04 107 24 174 44 280 64 453 84 732 05 110 25 178 45 287 65 464 85 750 06 113 26 182 46 294 66 475 86 768 07 115 27 187 47 301 67 487 87 787 08 118 28 191 48 309 68 499 88 806 09 121 29 196 49 316 69 511 89 825 10 124 20 200 30 324 40 523 50 845 11 127 31 205 51 332 71 536 91 866 12 130 32 210 52 340 72 549 92 887 13 133 33 215 53 348 73 562 93 909 14 137 34 221 54 357 74 576 94 931 15 140 35 226 55 365 75 590 95 953 16 143 36 232 56 374 76 604 96 976 17 147 37 237 57 383 77 619 18 150 38 243 58 392 78 634 19 154 39 249 59 402 79 649 20 158 40 255 60 412 80 665 The third character is the multiplier. _ _Y 0.01 _ _A 1 _ _C 100 _ _E 10,000 _ _X 0.1 _ _B 10 _ _D 1,000 _ _F 100,000 So a 1% surface mount resistor with the code, 20C =158 *100 =15800 = 15.800k =15k8 Ohms

Surface Mount Capacitor Component Markings. Capacitor code e.g. "S4" See table below S = 4.7, 4 = x10000. Value =

47000pF or 47nF. Code Value Code Value Code Value Code Value A 1.0 L 2.7 X 7.5 a 2.5 B 1.1 M 3.0 Y 8.2 b 3.5 C 1.2 N 3.3 Z 9.1 d 4.0 D 1.3 Q 3.9 e 4.5 E 1.5 R 4.3 Multipliers f 5.0 F 1.6 S 4.7 0 x1 m 6.0 G 1.8 T 5.1 1 x10 n 7.0 H 2.0 U 5.6 2 x100 p 3.6 J 2.2 V 6.2 3 x1000 t 8.0 K 2.4 W 6.8 4 x10,000 y 9.0 Aluminum electrolytic Code Value Code Value Code Value Code Value Code Value Code Value C 6.3 Volts D 10 Volts E 16 Volts F 25 Volts G 40 Volts H

Ideas?

Thanks,

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Reply to
Frank

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