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KOA Corporation > Product > Resistors(SMD)

Resistors(SMD)

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We produce a variety of high quality resistors from general-purpose resistors to power resistors. Please check our wide product lineup including precision resistors, low ohm type, anti-surge type, anti-pulse type, anti-sulfur type, metal plate shunt resistors, etc.

Thick Film Chip Resistors

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
General purpose RK73B PDF link of General purpose thick film resistor RK73B 1 to 22M 0.03 to 2 0402 to 6332 2, 5 0 to +300
±200 to ±400
Precision RK73H PDF link of precision thick film resistor RK73H 1 to 10M 0.03 to 2 0402 to 6332 0.5, 1 ±100 to ±400
Ultra precision RK73G PDF link of ultra precision thick film resistor RK73G 10 to 1M 0.05 to 0.25 0603 to 3216 0.25, 0.5, 1 ±50
Ultra precision RK73F  RK73F PDF link of ultra precision thick film resistor RK73F 10 to 1M 0.1 1608 0.25, 0.5 ±25
For Embedded Substrates XR73B/H/Z XR73 photo PDF link of resistor for embedded substrate, XR73 1 to 10M 0.063 0201 to 0402 1, 5 ±100 to ±400
Jumper chip RK73Z PDF link of jumper chip resistor RK73Z 50mΩ max. - 0402 to 6332 - -
Wide terminal WK73R KOA's wide terminal chip resistor WK73R PDF link of wide terminal chip resistor WK73R 10 to 1M 0.75 to 3.0 1632 to 3263 0.5, 1, 5 ±100 to ±800
High voltage HV73 HV73 photo PDF link of high voltage resistor HV73 10k to 51M 0.1 to 1 1608 to 6332 0.5, 1, 2, 5 ±100 to ±200
High voltage
(For Automotive)
HV73V HV73V photo PDF link of high voltage automotive type resistor HV73V 10k to 51M 0.1 to 0.25 1608 to 3216 0.5, 1, 2, 5 ±100 to ±200
Anti-Surge・Anti-Pulse SG73 SG73 photo PDF link of Anti-Surge/Anti-Pulse resistor SG73 1 to 1M 0.1 to 1 1608 to 6332 10, 20 ±200 to ±400
Anti-Surge(Precision) SG73S SG73S PDF link of Anti-Surge resistor SG73S 1 to 10M 0.125 to 0.5 1005 to 3226 0.5, 1, 2, 5 ±100 to ±200
Anti-Pulse(Precision) SG73P SG73P PDF link of anti-pulse resistor SG73P 1 to 10M 0.125 to 0.5 1005 to 3226 0.5, 1, 2, 5 ±100 to ±200

Anti Sulfuration Chip Resistors

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
Anti Sulfuration (General) RK73B-RT PDF link of Anti Sulfuration resistor RK73B-RT 1 to 10M 0.03 to 2 0402 to 6332 2, 5 0 to +300
±100 to ±300
Anti Sulfuration(Precision) RK73H-RT PDF link of Anti Sulfuration precision resistor RK73H-RT 10 to 10M 0.03 to 2 0402 to 6332 0.5, 1 ±100 to ±300
Anti Sulfuration(Jumper) RK73Z-RT PDF link of Anti Sulfuration jumper resistor RK73Z-RT 50m max.(1H:100m) - 0603 to 6332 - -
Anti Sulfuration(Ultra Precision) RK73G-RT PDF link of Anti Sulfuration ultra precision resistor RK73G-RT 30 to 1M 0.1 to 0.25 1005 to 3226 0.25, 0.5, 1 ±50
Anti Sulfuration
(Wide terminal)
WK73-RT KOA's anti-sulfur type wide terminal chip resistor WK73-RT PDF link of Anti Sulfuration wide terminal resistor WK73-RT 1 to 1M 0.75 to 3.0 1632 to 3263 1, 5 ±100 to ±200
Anti Sulfuration
(High Voltage)
HV73-RT HV73-RT photo PDF link of Anti Sulfuration high voltage resistor HV73-RT 10k to 51M 0.1 to 1 1608 to 6332 0.5, 1, 2, 5 ±100 to ±200
Anti Sulfuration
(High Voltage, For Automotive)
HV73V-RT HV73V-RT photo PDF link of Anti Sulfuration high voltage resistor automotive type HV73V-RT 10k to 51M 0.1 to 0.25 0603 to 1206 0.5, 1, 2, 5 ±100 to ±200
Anti Sulfuration
(Anti-Surge・Anti-Pulse)
SG73-RT SG73RT photo PDF link of Anti Sulfuration anti-surge/anti-pulse resistor SG73-RT 1 to 1M 0.1 to 1 1608 to 6332 10, 20 ±200 to ±400
Anti Sulfuration
(Anti-Surge, Precision)
SG73S-RT SG73S-RT PDF link of Anti Sulfuration anti-surge resistor SG73S-RT 1 to 10M 0.125 to 0.5 1005 to 3226 0.5, 1, 2, 5 ±100 to ±200
Anti Sulfuration
(Anti-Pulse, Precision)
SG73P-RT SG73P-RT PDF link of Anti Sulfuration anti-pulse resistor SG73P-RT 0.125 to 0.5 1005 to 3226 ±100 to ±200
Anti Sulfuration
(Low Resistance)
SR73-RT  SR73-RT PDF link of Anti Sulfuration low resistance resistor SR73-RT 430m~10 0.2 to 0.66 1608 to 3226 1, 2, 5 ±100, ±200

Thin Film Chip Resistors

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
Metal film (Precision) RN73 PDF link of Metal film Precision resistor RN73 10 to 1M 0.063 to 0.25 1005 to 3226 0.05, 0.1, 0.25, 0.5, 1 ±5 to ±100
Metal film
(High reliability)
RN73H PDF link of Metal film high reliability resistor RN73H 10 to 1.5M 0.063 to 0.25 1005 to 3226 0.05, 0.1, 0.25, 0.5, 1 ±5 to ±100

Chip Resistors for High Frequency Circuit

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
Microwave devices SHDR PDF 22 to 1k 0.031, 0.062 0.5x0.5 to 1.0x0.5 5 -100±50

Current Sense Resistors/Low Resistance Resistors

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
Thick Film
(Low resistance, wide terminal)
WK73S WK73S PDF link of Low resistance, wide terminal resistor WK73S 10m to 9.76 0.75 to 3 1632 to 3263 0.5, 1, 5 ±100 to ±800
Thick Film
(Low resistance, wide terminal)
WU73 wu73 photo PDF link of Low resistance, wide terminal resistor WU73 10m to 100m 1 1632 1 ±100 to ±150
Thick film
(Low resistance)
SR73 sr73 photo PDF link of low resistance resistor SR73 24m to 10 0.1 to 2 0603 to 6332 0.5, 1, 2, 5 0 to +400
±100 to ±1000
Thick film
(Low resistance, Low T.C.R.)
UR73 ur73 photo PDF link of low resistance resistor UR73 10m to 100m 0.125 to 1 1005 to 6332 1 ±100 to ±500
Thick film
(Low resistance,
Low T.C.R., High heat)
UR73V UR73V/Low R resistor PDF link of low resistance automotive type resistor UR73V 10m to 100m 0.5, 0.75 2012 to 3216 1 0 to +250,
±75 to ±100
Power shunt HS
HS large current shunt/KOA
PDF link of power shunt HS
0.1m, 0.2m 18, 36 40 x 15 5 50±25
Power shunt PSJ KOA Large Current Shunt PSJ2/PSL2 PDF link of power shunt PSJ
0.2m, 0.5m,
1m, 2m*
6, 8, 10, 12 10 x 5.2 1 ±75 to ±200
Power shunt PSL* KOA Large Current Shunt PSJ2/PSL2 0.3m*, 0.5m* 8 6332 1 ±115 to ±175
Power shunt PSG PSG4 Power Shunt/KOA PDF link of power shunt PSG
0.5m, 1m 8, 10
2725 1 ±50
Power shunt PSF PSG4 Power Shunt/KOA 0.5m, 1m 3, 5 3.0 x 3.8 1 ±50
Power shunt PSB PDF link of power shunt PSB 0.2m, 0.75m, 1m 6, 7 10x8.4 1 ±75 to ±100
Power shunt PSI PDF link of power shunt PSI 3m, 4m 3 10x5.2 1 ±50
Power shunt PSE PDF link of power shunt PSE 0.5m, 1m,
1.5m, 2m
3, 5 6.4x6.4 1, 5 ±150
Metal plate
(Ultra low resistance)
TLR(Small) PDF link of metal plate current sensing resistor TLR(small size) 2m to 10m 0.2, 1 1005 to 2012 1, 2, 5 ±100
Metal plate
(Ultra low resistance)
TLR PDF link of  metal plate current sensing resistor TLR 0.5m to 20m 0.5~2 3216 to 6332 1 ±75 to ±200
Metal plate
(Ultra low resistance)
TLR(High Power) PDF link of  metal plate high power type current sensing resistor TLR 0.5m to 20m 1~3 3216 to 6332 1 ±50 to ±75
Metal plate(Low resistance) TLRH PDF link of  metal plate current sensing resistor TLRH 6m to 270m 0.25, 2, 4, 5 2012 to 6332 1 ±50 to ±75
Current sensing
(Low resistance)
TSL PDF link of current sensing low resistance resistor TSL 5m to 100m 1 6332 0.5, 1, 5 ±100 to ±180
Current sensing
(Low resistance)
SL PDF link of current sensing low resistance resistor SL 3m to 22M 0.75~2 5025 to 11.5x7 0.5, 1, 2, 5 ±50 to ±180,
0 to +200
Current sensing
(Low resistance)
SLN PDF link of current sensing low resistance resistor SLN 5m to 200m 2 11.5x7 0.5, 1, 5 ±75 to ±110
Current sensing
(Low resistance, low T.C.R.)
SL(High Power) PDF link of current sensing low resistance resistor SL(high power type) 3m to 200m 1 to 7 5025 to 11.5x7 0.5, 1, 5 ±50 to ±180,
0 to +200
Current sensing
(4 terminal)
CSR PDF link of current sensing 4-terminal resistor CSR 5m to 50m 1, 2 10.8x6.2 to 12.8x8.2 0.5, 1 ±50
Current sensing
(Ceramic Case)
BLR PDF link of current sensing ceramic case resistor BLR 8m to 50m 1, 2, 15 14x5.5 to 19.3x9.2 5, 10 ±100
Custom milliohm resistors LR72 PDF link of 2m to 8m 0.25 to 1 11.2x3.2 to 14x5.2 5 ±100 to ±350

*Under Development

Fusing Resistors

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
Fusible RF73 PDF link of fusing resistor RF73 0.2 to 510 0.063 to 1 1608 to 6332 5 ±500,+1000 to -500

Linear P.T.C. Resistors/thermal sensers

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
Thick film, general purpose LA73 PDF link of Thick film linear positive temperature coefficient flat chip resistor LA73 22 to 10k 0.063 to 0.125 1608 to 3216 5 +1000 to +3600
Various TCR & Resistance LT73 PDF link of linear positive temperature coefficient flat chip resistor LT73 51 to 51k 0.1, 0.125 2012 to 3216 2, 5 +150 to +4500
Automotive, various TCR & Resistance LT73V linear positive temperature coefficient flat chip resistor LT73V 51 to 22k 0.1, 0.125 2012 to 3216 2, 5 +150 to +4500
High TCR, high resistance, precision LP73 PDF link of thin film resistance thermal chip sensors LP73 100 to 10k 0.016 to 0.063 1608 to 3216 1, 2, 5 ±5

Platinum Thermal Sensors

Features Product Series Image Catalog Resistance
Range(Ohm)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
General
purpose
SDT73H PDF link of platinum thin film thermal chip sensor SDT73H 100, 500 3216 0.2, 1 ±50
Heat
Resistant
SDT73S PDF link of platinum thin film thermal chip sensor SDT73S 100 3216 1 ±50
Automotive SDT73V PDF link of platinum thin film thermal chip sensor SDT73V 100, 500 3216 0.2, 1 ±50

MELF Type Resistors/Cylindrical Chip

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
Carbon film
(General purpose)
RD41 PDF link of MELF type carbon film resistor RD41 1 to 2.2M 0.125 to 0.25 2.0x1.25 to 5.9x2.2 2, 5 ±350 to -1300
Metal film (Precision) RN41 PDF link of MELF type metal film resistor RN41 0.22 to 5.11M 0.125 to 1 2.0x1.25 to 5.9x2.2 0.1, 0.25, 0.5, 1, 5 ±25 to ±200
Metal film (Precision) RM41 PDF link of MELF type metal film resistor RM41 0.22 to 8.2 0.2, 0.5 3.2x1.55 to 5.9x2.2 5 ±350
Linear P.T.C. MLT PDF link of linear PTC resistor MLT 1k to 9.1k 0.125, 0.25 3.5×1.55 to 5.9×2.4 5 +2000 to +3900
Jumper CC PDF link of MELF jumper CC 20m max. - 2.0x1.25 to 5.9x2.2 - -

Resistor Networks/Resistor Array

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
Array (Concave) CN PDF link of resistor array CN 1 to 1M 0.063 to 0.125 1005x2 to 3216x8 1, 2, 5 ±100 to ±400
Array (Convex) CN-A PDF link of resistor array CN-A 1 to 1M 0.063, 0.125 1608x4 to 3216x4 1, 5 ±100 to ±400
Array (Convex) CN-K PDF link of resistor array CN-K 1 to 1M 0.063 1005x2 to 1605x8 1, 5 ±100 to ±400
Thick film double common (Concave) CND PDF link of  thick film double common type resistor network CND 22 to 100k 0.05, 0.063 3.2x1.6 to 6.4x3.1 5 ±200
Thick film double common (Convex) CND-K PDF link of thick film double common type resistor network CND-K 47 to 39k 0.031 3.2x1.6 5 ±200
Thick film single common (Concave) CNB PDF link of thick film single common network resistor CNB 1k to 470k 0.063 3.2x2.5 to 6.4x3.2 5 ±200
BGA resistor network BR PDF link of BGA resistor network BR 10 to 1k 0.05 9.0x3.0 to 9.0x4.0 1 ±200
SOP R network MRGF16 * - 22 to 2.2M 0.031, 0.063 11x5.7 2, 5 ±200
Array(Metal film) CNN PDF link of network array CNN 1k, 10k, 100k 0.05 2012x2 0.1, 0.25 ±25
Thin film resistor network KPC PDF link of thin film resistor network KPC 10 to 100k 50m to 200m QSOP/SOIC/SOT 0.1, 0.25, 0.5, 1, 2, 5 ±10 to ±100

* Discontinued/Plan to be discontinued.

Anti Sulfuration Resistor Networks/Resistor Array

Features Product Series Image Catalog Resistance
Range(Ohm)
Power
Rating(W)
Size(mm) Tolerance
(±%)
T.C.R.(×10-6/K)
Anti Sulfuration Array (Concave) CN-RT PDF link of anti-sulfuration network array CN-RT 10 to 1M 0.063 to 0.125 1608x4 to 3216x4 5 ±200
Anti Sulfuration Array (Convex) CN-KRT PDF link of anti-sulfuration network array CN-KRT 3 to 1M 0.063 1005x2 to 1605x8 5 ±200 to ±400

Jumper Chip

Features Product Series Image Catalog Resistance Current
Rating
Size(mm)
Jumper Chip RK73Z PDF link of jumper chip resistor RK73Z 50mΩ max. 0.5A to 2A 0402 to 6332
Metal Plate Chip Jumper TLRZ PDF link of metal plate chip jumper TLRZ 0.2mΩ max.
(1E: 0.5mΩ max)
10A to 40A 1005 to 3216
High Current Jumper Type SLZ PDF link of high current jumper SLZ 0.5mΩ max. 44A 6332

Common Specification

Items Catalog
Minimum Ordered Quantity PDF link of Minimum Ordered Quantity
Recommended Pad Dimensions PDF link of Recommended Pad Dimensions
Packagings for Chip Components PDF link of Packagings for Chip Components
Axial Tapings PDF link of Axial Tapings
Radial Taping PDF link of Radial Taping
Forming PDF link of Forming
Color code•Resistance marking•E series numbers

Inventory
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