Editing Resistor (section)

===Precision resistor markings===

Many precision resistors, including surface mount and axial-lead types, are marked with a four-digit code. The first three digits are the significant figures and the fourth is the power of ten. For example:

* 1001 = 100 × 10<sup>1</sup> Ω = 1.00 kΩ
* 4992 = 499 × 10<sup>2</sup> Ω = 49.9 kΩ
* 1000 = 100 × 10<sup>0</sup> Ω = 100 Ω

Axial-lead precision resistors often use color code bands to represent this four-digit code.

==== {{anchor|3-char-resistor-marking-code}}EIA-96 marking ====

The former EIA-96 marking system now included in [[IEC&nbsp;60062:2016]]<!-- not in earlier issues --> is a more compact marking system intended for physically small high-precision resistors. It uses a two-digit code plus a letter (a total of three alphanumeric characters) to indicate 1% resistance values to three significant digits.<ref>[https://eepower.com/resistor-guide/resistor-standards-and-codes/resistor-smd-code/ "Chapter 2 - Resistor standards and codes"].</ref> The two digits (from "01" to "96") are a code that indicates one of the 96 "positions" in the standard [[E96 series]] of 1% resistor values. The uppercase letter is a code that indicates a [[power of ten]] multiplier. For example, the marking "01C" represents 10&nbsp;kOhm; "10C" represents 12.4&nbsp;kOhm; "96C" represents 97.6&nbsp;kOhm.<ref>[https://www.bourns.com/pdfs/CRP0603.pdf "CRP0603 Series - Precision Chip Resistors"]. p. 3.</ref><ref>[http://kiloohm.info/eia96-resistor/96C "Online calculator - EIA-96 SMD resistor"].</ref><ref>[https://www.electricaltechnology.org/2013/07/how-to-calculate-or-find-value-of-smd.html "SMD Resistor Codes: How to Find the Value of SMD Resistors"].</ref><ref>[https://www.ttelectronics.com/TTElectronics/media/ProductFiles/ApplicationNotes/TN004-Methods-for-Marking-Values-on-Resistors.pdf "Marking Codes used on Welwyn Chip Resistors"]. p. 2.</ref><ref>[https://www.electronics-notes.com/articles/electronic_components/resistors/smt-smd-resistor-codes-markings.php "Surface Mount Resistor: codes & markings"].</ref>

{|
|
{| class="wikitable" style="float:left; margin-right:2em;"
!Code
!Series
!colspan="7"|Letter
|-
!Digits
!E96
!Y&nbsp;/&nbsp;S
!X&nbsp;/&nbsp;R
!A
!B&nbsp;/&nbsp;H
!C
!D
!E
|-
!01
!1.00
|1R00||10R0||100R||1K00||10K0||100K||1M00
|- 
!02
!1.02
|1R02||10R2||102R||1K02||10K2||102K||1M02
|-
!03
!1.05
|1R05||10R5||105R||1K05||10K5||105K||1M05
|-
!04
!1.07
|1R07||10R7||107R||1K07||10K7||107K||1M07
|-
!05
!1.10
|1R10||11R0||110R||1K10||11K0||110K||1M10
|-
!06
!1.13
|1R13||11R3||113R||1K13||11K3||113K||1M13
|-
!07
!1.15
|1R15||11R5||115R||1K15||11K5||115K||1M15
|-
!08
!1.18
|1R18||11R8||118R||1K18||11K8||118K||1M18
|-
!09
!1.21
|1R21||12R1||121R||1K21||12K1||121K||1M21
|-
!10
!1.24
|1R24||12R4||124R||1K24||12K4||124K||1M24
|-
!11
!1.27
|1R27||12R7||127R||1K27||12K7||127K||1M27
|-
!12
!1.30
|1R30||13R0||130R||1K30||13K0||130K||1M30
|-
!13
!1.33
|1R33||13R3||133R||1K33||13K3||133K||1M33
|-
!14
!1.37
|1R37||13R7||137R||1K37||13K7||137K||1M37
|-
!15
!1.40
|1R40||14R0||140R||1K40||14K0||140K||1M40
|-
!16
!1.43
|1R43||14R3||143R||1K43||14K3||143K||1M43
|-
!17
!1.47
|1R47||14R7||147R||1K47||14K7||147K||1M47
|-
!18
!1.50
|1R50||15R0||150R||1K50||15K0||150K||1M50
|-
!19
!1.54
|1R54||15R4||154R||1K54||15K4||154K||1M54
|-
!20
!1.58
|1R58||15R8||158R||1K58||15K8||158K||1M58
|-
!21
!1.62
|1R62||16R2||162R||1K62||16K2||162K||1M62
|-
!22
!1.65
|1R65||16R5||165R||1K65||16K5||165K||1M65
|-
!23
!1.69
|1R69||16R9||169R||1K69||16K9||169K||1M69
|-
!24
!1.74
|1R74||17R4||174R||1K74||17K4||174K||1M74
|-
!25
!1.78
|1R78||17R8||178R||1K78||17K8||178K||1M78
|-
!26
!1.82
|1R82||18R2||182R||1K82||18K2||182K||1M82
|-
!27
!1.87
|1R87||18R7||187R||1K87||18K7||187K||1M87
|-
!28
!1.91
|1R91||19R1||191R||1K91||19K1||191K||1M91
|-
!29
!1.96
|1R96||19R6||196R||1K96||19K6||196K||1M96
|-
!30
!2.00
|2R00||20R0||200R||2K00||20K0||200K||2M00
|-
!31
!2.05
|2R05||20R5||205R||2K05||20K5||205K||2M05
|-
!32
!2.10
|2R10||21R0||210R||2K10||21K0||210K||2M10
|-
!33
!2.15
|2R15||21R5||215R||2K15||21K5||215K||2M15
|-
!34
!2.21
|2R21||22R1||221R||2K21||22K1||221K||2M21
|-
!35
!2.26
|2R26||22R6||226R||2K26||22K6||226K||2M26
|-
!36
!2.32
|2R32||23R2||232R||2K32||23K2||232K||2M32
|-
!37
!2.37
|2R37||23R7||237R||2K37||23K7||237K||2M37
|-
!38
!2.43
|2R43||24R3||243R||2K43||24K3||243K||2M43
|-
!39
!2.49
|2R49||24R9||249R||2K49||24K9||249K||2M49
|-
!40
!2.55
|2R55||25R5||255R||2K55||25K5||255K||2M55
|-
!41
!2.61
|2R61||26R1||261R||2K61||26K1||261K||2M61
|-
!42
!2.67
|2R67||26R7||267R||2K67||26K7||267K||2M67
|-
!43
!2.74
|2R74||27R4||274R||2K74||27K4||274K||2M74
|-
!44
!2.80
|2R80||28R0||280R||2K80||28K0||280K||2M80
|-
!45
!2.87
|2R87||28R7||287R||2K87||28K7||287K||2M87
|-
!46
!2.94
|2R94||29R4||294R||2K94||29K4||294K||2M94
|-
!47
!3.01
|3R01||30R1||301R||3K01||30K1||301K||3M01
|-
!48
!3.09
|3R09||30R9||309R||3K09||30K9||309K||3M09
|}
|
{| class="wikitable" style="float: right; margin-right: 2em;"
!Code
!Series
!colspan="7"|Letter
|-
!Digits
!E96
!Y&nbsp;/&nbsp;S
!X&nbsp;/&nbsp;R
!A
!B&nbsp;/&nbsp;H
!C
!D
!E
|-
!49
!3.16
|3R16||31R6||316R||3K16||31K6||316K||3M16
|-
!50
!3.24
|3R24||32R4||324R||3K24||32K4||324K||3M24
|-
!51
!3.32
|3R32||33R2||332R||3K32||33K2||332K||3M32
|-
!52
!3.40
|3R40||34R0||340R||3K40||34K0||340K||3M40
|-
!53
!3.48
|3R48||34R8||348R||3K48||34K8||348K||3M48
|-
!54
!3.57
|3R57||35R7||357R||3K57||35K7||357K||3M57
|-
!55
!3.65
|3R65||36R5||365R||3K65||36K5||365K||3M65
|-
!56
!3.74
|3R74||37R4||374R||3K74||37K4||374K||3M74
|-
!57
!3.83
|3R83||38R3||383R||3K83||38K3||383K||3M83
|-
!58
!3.92
|3R92||39R2||392R||3K92||39K2||392K||3M92
|-
!59
!4.02
|4R02||40R2||402R||4K02||40K2||402K||4M02
|-
!60
!4.12
|4R12||41R2||412R||4K12||41K2||412K||4M12
|-
!61
!4.22
|4R22||42R2||422R||4K22||42K2||422K||4M22
|-
!62
!4.32
|4R32||43R2||432R||4K32||43K2||432K||4M32
|-
!63
!4.42
|4R42||44R2||442R||4K42||44K2||442K||4M42
|-
!64
!4.53
|4R53||45R3||453R||4K53||45K3||453K||4M53
|-
!65
!4.64
|4R64||46R4||464R||4K64||46K4||464K||4M64
|-
!66
!4.75
|4R75||47R5||475R||4K75||47K5||475K||4M75
|-
!67
!4.87
|4R87||48R7||487R||4K87||48K7||487K||4M87
|-
!68
!4.99
|4R99||49R9||499R||4K99||49K9||499K||4M99
|-
!69
!5.11
|5R11||51R1||511R||5K11||51K1||511K||5M11
|-
!70
!5.23
|5R23||52R3||523R||5K23||52K3||523K||5M23
|-
!71
!5.36
|5R36||53R6||536R||5K36||53K6||536K||5M36
|-
!72
!5.49
|5R49||54R9||549R||5K49||54K9||549K||5M49
|-
!73
!5.62
|5R62||56R2||562R||5K62||56K2||562K||5M62
|-
!74
!5.76
|5R76||57R6||576R||5K76||57K6||576K||5M76
|-
!75
!5.90
|5R90||59R0||590R||5K90||59K0||590K||5M90
|-
!76
!6.04
|6R04||60R4||604R||6K04||60K4||604K||6M04
|-
!77
!6.19
|6R19||61R9||619R||6K19||61K9||619K||6M19
|-
!78
!6.34
|6R34||63R4||634R||6K34||63K4||634K||6M34
|-
!79
!6.49
|6R49||64R9||649R||6K49||64K9||649K||6M49
|-
!80
!6.65
|6R65||66R5||665R||6K65||66K5||665K||6M65
|-
!81
!6.81
|6R81||68R1||681R||6K81||68K1||681K||6M81
|-
!82
!6.98
|6R98||69R8||698R||6K98||69K8||698K||6M98
|-
!83
!7.15
|7R15||71R5||715R||7K15||71K5||715K||7M15
|-
!84
!7.32
|7R32||73R2||732R||7K32||73K2||732K||7M32
|-
!85
!7.50
|7R50||75R0||750R||7K50||75K0||750K||7M50
|-
!86
!7.68
|7R68||76R8||768R||7K68||76K8||768K||7M68
|-
!87
!7.87
|7R87||78R7||787R||7K87||78K7||787K||7M87
|-
!88
!8.06
|8R06||80R6||806R||8K06||80K6||806K||8M06
|-
!89
!8.25
|8R25||82R5||825R||8K25||82K5||825K||8M25
|-
!90
!8.45
|8R45||84R5||845R||8K45||84K5||845K||8M45
|-
!91
!8.66
|8R66||86R6||866R||8K66||86K6||866K||8M66
|-
!92
!8.87
|8R87||88R7||887R||8K87||88K7||887K||8M87
|-
!93
!9.09
|9R09||90R9||909R||9K09||90K9||909K||9M09
|-
!94
!9.31
|9R31||93R1||931R||9K31||93K1||931K||9M31
|-
!95
!9.53
|9R53||95R3||953R||9K53||95K3||953K||9M53
|-
!96
!9.76
|9R76||97R6||976R||9K76||97K6||976K||9M76
|}
|}
{{clear}}