Resistor Marking Codes

Colour Code used on Welwyn Band-marked Resistors Resistors Through-hole and MELF style resistors with colour band marking use the following colour code (reference IEC60062):

Colour Silver Gold Black Brown Red Orange Yellow Green Blue Violet Grey White Blank

Value 1

Value 2

Value 3

0 1 2 3 4 5 6 7 8 9

0 1 2 3 4 5 6 7 8 9

0 1 2 3 4 5 6 7 8 9

Multiplier x 0.01 x 0.1 x1 x 10 x 100 x 1K x 10K x 100K x 1M x 10M x 100M x 1G

Tolerance 10% K 5% J 1% 2%

F G

0.5% 0.25% 0.1% 0.05%

D C B A

20%

M

Example 1 5-Band Marking E24/E96 values

4 7 0 x100 1% = 47K 1% E.g. MFR4 E96

Example 2 4-Band Marking E24/E96 values without tolerance

4 7 0 x100 = 47K E.g. WRM0204 E96

Example 3 4-Band Marking E24 values

8 2 x1K 5% = 82K 5% E.g. WMO3S E24

Resistor Marking Codes

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Marking Codes used on Welwyn Chip Resistors Where space allows, chip resistors are marked with value in 3 or 4 characters. The coding is 2 or 3 digits followed by one multiplier expressing the number of zeros. For example 472 = 4700 ohms = 4K7, 1331 = 1330 ohms = 1K33, 330 = 33 ohms = 33R (N.B. not  330R).  330R). Lower values use “R” as a decimal point. For example 4R7 = 4.7 ohms, 34R8 = 34.8 ohms. For E96 values on 0603, EIA-96 marking code is 2 digits + 1 letter. Example: 07B = 1K15 CODE Digits 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Letter S or Y R or X 1R0 1R02 1R05 1R07 1R1 1R13 1R15 1R18 1R21 1R24 1R27 1R3 1R33 1R37 1R4 1R43 1R47 1R5 1R54 1R58 1R62 1R65 1R69 1R74 1R78 1R82 1R87 1R91 1R96 2R0 2R05 2R1 2R15 2R21 2R26 2R32 2R37 2R43 2R49 2R55 2R61 2R67 2R74 2R8 2R87 2R94 3R01 3R09

10R 10R2 10R5 10R7 11R 11R3 11R5 11R8 12R1 12R4 12R7 13R 13R3 13R7 14R 14R3 14R7 15R 15R4 15R8 16R2 16R5 16R9 17R4 17R8 18R2 18R7 19R1 19R6 20R 20R5 21R 21R5 22R1 22R6 23R2 23R7 24R3 24R9 25R5 26R1 26R7 27R4 28R 28R7 29R4 30R1 30R9

CODE

A

H or B

C

D

E

Digits

100R 102R 105R 107R 110R 113R 115R 118R 121R 124R 127R 130R 133R 137R 140R 143R 147R 150R 154R 158R 162R 165R 169R 174R 178R 182R 187R 191R 196R 200R 205R 210R 215R 221R 226R 232R 237R 243R 249R 255R 261R 267R 274R 280R 287R 294R 301R 309R

1K0 1K02 1K05 1K07 1K1 1K13 1K15 1K18 1K21 1K24 1K27 1K3 1K33 1K37 1K4 1K43 1K47 1K5 1K54 1K58 1K62 1K65 1K69 1K74 1K78 1K82 1K87 1K91 1K96 2K0 2K05 2K1 2K15 2K21 2K26 2K32 2K37 2K43 2K49 2K55 2K61 2K67 2K74 2K8 2K87 2K94 3K01 3K09

10K 10K2 10K5 10K7 11K 11K3 11K5 11K8 12K1 12K4 12K7 13K 13K3 13K7 14K 14K3 14K7 15K 15K4 15K8 16K2 16K5 16K9 17K4 17K8 18K2 18K7 19K1 19K6 20K 20K5 21K 21K5 22K1 22K6 23K2 23K7 24K3 24K9 25K5 26K1 26K7 27K4 28K 28K7 29K4 30K1 30K9

100K 102K 105K 107K 110K 113K 115K 118K 121K 124K 127K 130K 133K 137K 140K 143K 147K 150K 154K 158K 162K 165K 169K 174K 178K 182K 187K 191K 196K 200K 205K 210K 215K 221K 226K 232K 237K 243K 249K 255K 261K 267K 274K 280K 287K 294K 301K 309K

1M0 1M02 1M05 1M07 1M1 1M13 1M15 1M18 1M21 1M24 1M27 1M3 1M33 1M37 1M4 1M43 1M47 1M5 1M54 1M58 1M62 1M65 1M69 1M74 1M78 1M82 1M87 1M91 1M96 2M0 2M05 2M1 2M15 2M21 2M26 2M32 2M37 2M43 2M49 2M55 2M61 2M67 2M74 2M8 2M87 2M94 3M01 3M09

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

Letter S or Y R or X 3R16 3R24 3R32 3R4 3R48 3R57 3R65 3R74 3R83 3R92 4R02 4R12 4R22 4R32 4R42 4R53 4R64 4R75 4R87 4R99 5R11 5R23 5R36 5R49 5R62 5R76 5R9 6R04 6R19 6R34 6R49 6R65 6R81 6R98 7R15 7R32 7R5 7R68 7R87 8R06 8R25 8R45 8R66 8R87 9R09 9R31 9R53 9R76

31R6 32R4 33R2 34R 34R8 35R7 36R5 37R4 38R3 39R2 40R2 41R2 42R2 43R2 44R2 45R3 46R4 47R5 48R7 49R9 51R1 52R3 53R6 54R9 56R2 57R6 59R 60R4 61R9 63R4 64R9 66R5 68R1 69R8 71R5 73R2 75R 76R8 78R7 80R6 82R5 84R5 86R6 88R7 90R9 93R1 95R3 97R6

A

H or B

C

D

E

316R 324R 332R 340R 348R 357R 365R 374R 383R 392R 402R 412R 422R 432R 442R 453R 464R 475R 487R 499R 511R 523R 536R 549R 562R 576R 590R 604R 619R 634R 649R 665R 681R 698R 715R 732R 750R 768R 787R 806R 825R 845R 866R 887R 909R 931R 953R 976R

3K16 3K24 3K32 3K4 3K48 3K57 3K65 3K74 3K83 3K92 4K02 4K12 4K22 4K32 4K42 4K53 4K64 4K75 4K87 4K99 5K11 5K23 5K36 5K49 5K62 5K76 5K9 6K04 6K19 6K34 6K49 6K65 6K81 6K98 7K15 7K32 7K5 7K68 7K87 8K06 8K25 8K45 8K66 8K87 9K09 9K31 9K53 9K76

31K6 32K4 33K2 34K 34K8 35K7 36K5 37K4 38K3 39K2 40K2 41K2 42K2 43K2 44K2 45K3 46K4 47K5 48K7 49K9 51K1 52K3 53K6 54K9 56K2 57K6 59K 60K4 61K9 63K4 64K9 66K5 68K1 69K8 71K5 73K2 75K 76K8 78K7 80K6 82K5 84K5 86K6 88K7 90K9 93K1 95K3 97K6

316K 3 16K 324K 324K 332K 332K 340K 348K 348K 357K 357K 365K 365K 374K 374K 383K 383K 392K 392K 402K 402K 412K 412K 422K 422K 432K 432K 442K 442K 453K 453K 464K 464K 475K 475K 487K 487K 499K 499K 511K 511K 523K 523K 536K 536K 549K 549K 562K 562K 576K 576K 590K 604K 604K 619K 619K 634K 634K 649K 649K 665K 665K 681K 681K 698K 698K 715K 715K 732K 732K 750K 768K 768K 787K 787K 806K 806K 825K 825K 845K 845K 866K 866K 887K 887K 909K 909K 931K 931K 953K 953K 976K 976K

3M16 3M24 3M32 3M 4 3M48 3M57 3M65 3M74 3M83 3M92 4M02 4M12 4M22 4M32 4M42 4M53 4M64 4M75 4M87 4M99 5M11 5M23 5M36 5M49 5M62 5M76 5M 9 6M04 6M19 6M34 6M49 6M65 6M81 6M98 7M15 7M32 7M 5 7M68 7M87 8M06 8M25 8M45 8M66 8M87 9M09 9M31 9M53 9M76

Issue 2 May 2010

Resistor Marking Codes

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