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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(Ω)
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
(Low T.C.R.)
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
XR73H
XR73Z
XR73 photo PDF link of resistor for embedded substrate, XR73 1 to 10M 0.063 0603 to 1005 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 0.33 to 2.0 0510 to 3263 0.5, 1, 5 ±100 to ±200
Wide terminal
(High power)
WK73R
KOA's Wide Terminal High Power Type Resistors/WK73R
PDF link of wide terminal chip resistor WK73R 10 to 1M 1.5 to 3.0 1632 to 3263 0.5, 1, 5 ±100 to ±200
Wide terminal
(Anti-surge)
WG73
KOA's Wide Terminal Anti-Pulse Type Resistors/WG73
PDF link of wide terminal chip resistor WK73R 560m to 1k 1 2550 10, 20 ±100
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 0.75 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 0.75 1005 to 3226 0.5, 1, 2, 5 ±100 to ±200
Anti-Pulse(Ultra Precision) SG73G  Anti-Surge Resistor SG73G/KOA PDF link of anti-pulse resistor SG73G 10 to 1M 0.2 to 0.5 0603 to 1206 0.25, 0.5 ±50

Anti Sulfuration Chip Resistors

Features Product Series Image Catalog Resistance
Range(Ω)
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
±200 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.
(100m: 1H)
- 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 2.0 1632 to 3263 1, 5 ±100 to ±200
Anti Sulfuration
(Wide terminal)
WK73-RT
(High power)
KOA's Wide Terminal Anti-Pulse Type Resistors/WG73
PDF link of Anti Sulfuration high power wide terminal resistor WK73-RT 1 to 1M 1.5 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 1608 to 3216 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 0.75 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 1 to 10M 0.125 to 0.75 1005 to 3226 0.5, 1, 2, 5 ±100 to ±200
Anti Sulfuration
(Low Resistance)
SR73-RT  SR73-RT PDF link of Anti Sulfuration low resistance resistor SR73-RT 100m~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(Ω)
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

*For Pre-Existing Designs

Fusing Resistors

Features Product Series Image Catalog Resistance
Range(Ω)
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/Linear PTC Thermistors

Features Product Series Image Catalog Resistance
Range(Ω)
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(Ω)
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(Ω)
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 - -

*For Pre-Existing Designs

Resistor Networks/Resistor Array

Features Product Series Image Catalog Resistance
Range(Ω)
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
Isolated Resistor Networks RIA PDF 10~510k 50m~200m 8, 14, 16, 20, 24 0.1, 0.25, 0.5, 1, 2, 5 ±10~±100
Custom Resistor Networks RNX PDF 10~510k 50m~200m 8, 14, 16, 20, 24 0.1, 0.25, 0.5, 1, 2, 5 ±10~±100
Precision Voltage Divider RTY PDF 30~200k 200m 3 0.1, 0.25, 0.5, 1, 2, 5 ±10~±100
Bussed Resistor Network RBA PDF 10~100k 50m~200m 8, 14, 16, 20, 24 1, 2, 5 ±25~±100
High Speed Bussed Network RBB PDF 10~100k 50m~200m 8, 14, 16, 20, 24 1, 2, 5 ±25~±100
SOT-23 Resistor Network RTX
PDF 51~40k 50m~200m 3 1, 2, 5 ±25~±100
Dual Terminator Network RDA
PDF 150~10k 50m~200m 16, 20 2, 5 ±25~±100
Differential Terminator Network RDB
PDF 150~10k 50m~200m 16, 20 2, 5 ±25~±100
Custom Resistor Networks RLA PDF 1k~30k 50m~200m 14, 16 2, 5 ±100
High Voltage Divider HVD KOA's High Voltage Divider Resistor/HVD
PDF link to High Voltage Divider HVD 0.5M~11.5M 250m 24 0.1, 0.25, 0.5, 1 ±25~±50

Discontinued/Plan to be discontinued.

Anti Sulfuration Resistor Networks/Resistor Array

Features Product Series Image Catalog Resistance
Range(Ω)
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 Anti-Sulfura Chip Network Resistors CN-KRT/KOA 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 KOA's Metal Plate Zero Ohm Jumper Resistor/TLRZ
PDF link of metal plate chip jumper TLRZ 0.2mΩ max.
(0.5mΩ max: 1E)
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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