KOA Speer...
A Leader in
Automotive Electronics
Although most engineers know KOA as the world leader in thick film resistors, many are not aware of the extent of our broad line of passive components. In addition to our standard products, we’ve specifically developed a wide range of high-reliability and anti-sulfuration components for the demanding applications found within the automotive industry.
KOA Speer's family of automotive components includes thin and thick film resistors, specialty resistors and arrays, power shunt resistors, current sense resistors, circuit protection and thermal sensors, and inductors. And we’re the industry’s most recognized and award-winning supplier for achieving the highest product quality, on-time delivery and responsive customer service. You can count on KOA Speer as your Automotive Electronics partner.

Automotive Solutions
To view the KOA Speer components used for a particular area, please click the colored boxes below or select the system from the list on the right.


KOA Speer's Family of Automotive Components


Thick Film Chip Resistors
General Purpose RK73B
- Tolerance: ±2%, ±5%
- Resistance values: 1 ~ 22MΩ
- Sizes available: 0201 ~ 2512
- Operating Temperature: -55°C ~ +155°C
Precision RK73H
- Tolerance: ±0.5%, ±1%
- Resistance values: 1 ~ 10MΩ
- Sizes available: 0201 ~ 2512
- Operating Temperature: -55oC ~ +155oC
50ppm/°C Thick Film RK73G
- High precision TCR 50ppm/°C
- Resistance values: 10 ~ 10MΩ
- Sizes available: 0402 ~ 1206
- Tolerance: ±0.5%, ±1%
Surge Current Thick Film Resistor SG73
- Excellent surge and pulse performance
- Up to six times the power rating at 1ms compared to standard RK73
- ESD (electro static discharge)
- Resistance values: 1~ 1MΩ
- Sizes available: 0603 ~ 2512
- Tolerance: ±10%, ±20%
Surge Protection Thick Film SG73S
- Provides better ESD protection that the standard RK73
- Resistance values: 1 ~ 10MΩ
- Sizes available: 0402 ~ 1210
- Tolerance: ±0.5%, ±1%, ±2%, ±5%
Pulse Precision Thick Film SG73P
- Provides higher pulse rating than the standard RK73
- Resistance values: 1 ~ 10MΩ
- Sizes available: 0402 ~ 1210
- Tolerance: ±0.5%, ±1%, ±2%, ±5%
Wide Terminal Thick Film Resistor WK73
- High power ratings as a result of its enhanced heat dissipation
- Superior thermal shock characteristics
- Power Rating: 0.75W, 1W, 1.5W, 2W
- Resistance values: 10m ~ 1MΩ
- Size available: 0612 ~ 1225
- Operating Temperature: -55oC ~ +155oC


Anti-Sulfur Chip Resistors
Thick Film Chip Resistors: RK73-RT
- Pass ASTM-B809 Anti-Sulfur Testing
- Excellent anti-sulfur characteristics due to the use of high sulfur-proof inner top electrode material
- Excellent heat and weather resistance by the use of metal glaze thick film
- General Purpose RK73B-RT
- Precision RK73H-RT
- Zero Ohm Jumper RK73Z-RT
Wide Terminal Thick Film Resistor WK73-RT
- Anti-sulfur type, wide-side termination (reverse geometry)
- Pass ASTM-B809 Anti-Sulfur Testing
- Excellent anti-sulfur characteristics due to the use of high sulfur-proof inner top electrode material
- Power Rating: 0.75W, 1W, 1.5W, 2W
- Resistance values: 10m ~ 1MΩ
- Size available: 0612 ~ 1225
- Operating Temperature: -55oC ~ +155oC
Surge Current Thick Film Resistor SG73-RT
- Pass ASTM-B809 Anti-Sulfur Testing
- Excellent anti-sulfur characteristics due to the use of high sulfur-proof inner top electrode material
- Resistance values: 1 ~ 10MΩ
- Sizes available: 0402 ~ 1210
- Tolerance: ±0.5%, ±1%, ±2%, ±5


Circuit Protection
Varistor
Multilayer Type Metal Oxide Varistor NV73DL
- Surge voltage protectors for Automotive ideal for countermeasures against ESD
- Max. Peak Current (8/20µS): 80 ~ 300A
- Varistor voltage: 12 ~ 82
- Max. Energy (J): 0.1 ~ 1.5
- Sizes available: 0603 ~ 1206
Load Dump Surge Varistor NV73DS
- Symmetrical non-linearity V-l characteristics absorb positive and negative surges
- Max. Peak Current (8/20µS): 200A
- Varistor voltage: 27, 47
- Max. Energy (J): 63 ~ 70
- Size: 2420
Fuses
Chip Current Fuse CCP
- Immediate cut-off of excessive heat
- Rapid change of temperature: -55oC ~ +125oC, 10 cycles
- Current Rating: 0.75A ~ 2.5A
- Fusing Current: 1.5A ~ 6.3A
- Sizes available: 1206, 1210
Chip Current Fuse CCF
- Rapid change of temperature: -55oC ~ +125oC, 10 cycles
- Ceramic case provides excellent mechanical strength
- Rated Current: 400mA ~ 15A
- Internal R (mW) Max.: 3.5 ~ 650
- 2410 size
Chip Current Fuse TF16VN
- SMD over current protectors
- Rapid change of temperature: -55oC ~ +125oC, 10 cycles
- Rated Current: 0.80A ~ 3.15A
- Internal R (mW) Max.: 40 ~ 200
- Rated Voltage: 32V
- 0603 size


Current Sense Resistors
Wide Terminal Thick Film Resistor WK73
- High power ratings as a result of its enhanced heat dissipation
- Superior thermal shock characteristics
- Power Rating: 0.75W, 1W, 1.5W, 2W
- Resistance values: 10m ~ 1MΩ
- Size available: 0612 ~ 1225
- Operating Temperature: -55oC ~ +155oC
Molded Current Sense Resistor
Molded Current Sense Resistor SL (Higher Power) Higher Power Current Sensing - to 3W
- Power rating: 2010-1W, 2512-1.5W
- TCR: ±50, ±75ppm/&Deg;C
- Resistance values: 3 ~ 200mΩ
- Tolerance: ±0.5%, ±1%, ±5%
Higher Power Molded Current Sense Resistor SLN-SLW Higher Power Current Sensing - to 7W
- Power rating: 2010-1W, 2512-1.5W, 4527-2W, 3W, 7W
- TCR: ±50, ±75ppm, ±100, ±180/&Deg;C
- Resistance values: 5m ~ 200mΩ
- Tolerance: ±0.5%, ±1%, ±2%, ±5%
Metal Plate Current Sense Resistor
Metal Plate, Low Resistance Current Sense Resistor TLR (0805) Current Sensing, reduced size
- Power rating: 0805-1W
- Resistance range: 2 ~ 10mΩ
- TCR: ±100ppm/°C
- Tolerance: ±1%, ±2%, ±5%
Metal Plate, Low Resistance Current Sense Resistor TLR (to 2W) Current Sensing, Standard Power
- Power rating: 1206-0.5W, 2010-1W, 2512-2W
- Resistance range: 0.5 ~ 20mΩ
- TCR: ±50, ±75ppm/°C
- Tolerance: ±1%
Increased Power Rating Metal Plate Resistors TLR (to 5W) Current Sensing, Higher Power
- Power rating: 1206-1W, 1.5W, 2010-2W, 2512-3W, 5W
- Resistance range: 0.5 ~ 20mΩ
- TCR: ±50ppm, ±75ppm/°C
- Tolerance: ±1%
Metal Plate Current Sense Resistor LR72A, LR72B, LR72C Current Sensing, Custom low resistance
- Flexible leads allow for thermal expansion
- Unique open-center shapes for cooler operation
- Resistance values: 2m ~ 8mΩ
Metal Plate Current Sense Resistor LR
- The super low resistance (3m ~ 100mΩ) is suitable for high power current detection
- Pitches and heights are adjustable according to mounting conditions
- All custom made parts
- Max. current rating: 3A ~ 21A
Low Resistance Flat Chip Resistor
Lo-Ohm, Thick Film Current Sense Resistor SR73
- Low Resistance values: 0.24 ~ 10Ω
- Sizes available: 0201 ~ 2512
- Tolerance: ±0.5%, ±1%, ±2%, ±5%
- TCR: ±100 ~ ±1000


Thermal Sensor
Platinum Thin Film Thermal Chip Sensor SDT73V
- TCR in accordance to JIS, DIN-IES Standards
- Resistance values: 100Ω, 500Ω
- TCR: 3850ppm/oC
- Operating Temperature: -55oC ~ +155oC
Platinum Thin Film Thermal Sensor Resistor SDT101
- Stable characteristics in long time use with an excellent environment resistance
- Usable as a heater of hot film flow sensor
- Temperature Range: -55oC ~ +300oC
- Resistance values: 10, 100, 500Ω
- TCR: 3500ppm/oC
Linear PTC Flat Chip Resistor LT73V
- SMD thin film technology with thermo-perceptivity
- TCR: 150 ~ 4500ppm/oC
- Rated Ambient Temperature: +85oC
- Operating Temperature: -55oC ~ +155oC
- Sizes available: 0805, 1206


MELF Type Resistors
Fixed Ceramic MELF Resistor CPCN
- Suitable for noise suppression of engine ignition systems
- Power Rating: 0.5W, 1W, 1.5W, 2W
- Resistance values: 1k, 2k, 5k, 10k, 15kΩ
- TCR: -1200 +300ppm/oC
- Operating Temperature: -40oC ~ +200oC


Thin Film Chip Resistors
High Heat Resistance Thin Film RN73H
- High reliability and stability at elevated temperature
- Improved moisture resistance by glass passivation
- Resistance values: 10 ~ 1MΩ
- TCR: ±5, ±10, ±25, ±50, ±100ppm/oC
- Sizes Available: 0402 ~ 1210
Thin Film Resistor Networks RB(X), RD(X), RT(X)
- Excellent resistance matching TCR tracking and stability
- Custom circuits available
- Packages: SOT-23, QSOP, SOIC-N
- Resistance values: 30 ~ 100kΩ
Thin Film Resistor Networks RIA, RNX
- High precision resistor networks
- Custom circuits available
- Packages: QSOP, SOIC-N
- TCR: ±10, ±25, ±50, ±100ppm/oC
- Resistance values: 30 ~ 510kΩ


Inductors
High Precision Thin Film Inductor KL73
- Low DC Resistance, High Q
- Nominal Inductance: 0.56 ~ 100nH
- Tolerance: 0.1nH, 0.2nH, ±2%, ±5%
- Temperature Range: -40oC ~ +155oC
- Sizes: 0402 ~ 1206
High Q Air-Core Chip Inductor KQ
- Q Measuring Frequency (mHz) 50 ~ 250
- Nominal Inductance: 1 ~ 10,000nH
- Tolerance: 0.1nH, 0.2nH, ±2%, ±3%, ±5%, ±10%, ±20%
- Sizes available: 0402 ~ 1008
Power Chip Inductor LPC4235, 4545
- Low DC resistance and high allowable current
- Allowable DC current: 0.12 ~ 3.10A
- Nominal Inductance: 0.82 ~ 2200µH
- Tolerance: ±10%, ±20%
Shielded Choke Coil Inductor LCM1060
- Original construction & wiring technology
- Low DC resistance: 9 ~ 880
- Nominal Inductance: 1.5 ~ 470µH
- Operating Temperature: -40oC ~ +150oC
Transponder Coil (Rx) KT
- Single LF antenna for receiver
- High sensitivity ~ 75mV/µT
- DC resistance: 500 ~ 700kHz min.
- Nominal Inductance: 2.4 ~ 12mH
- L, Q Measuring Frequency: 125kHz


Power Type Resistors (Leaded)
Power Type Metal Oxide, Reduced Size Resistor MOS
- Flame Retardant coating (Equivalent to UL94V-0)
- Power Rating: 0.5W ~ 5W
- Resistance values: 10 ~ 100kΩ
- Operating Temperature: -55oC ~ +200oC
High Power Rectangular Wirewound Resistor BGR, BWR, BSR
- High power resistor in flame-retardant insulated ceramic case
- Power Rating: 1W ~4W
- Resistance values: 0.39 ~ 56kΩ
- Tolerance: ±1%, ±2%, ±5%, ±10%
Metal Plate High Power Rectangular Wirewound Resistor BPR
- Power type current detecting resistor in a flame-retardant ceramic case
- Power Rating: 2W, 3W, 5W, 10W
- Resistance values: 0.01 ~ 1Ω
- Operating Temperature: -40oC ~ +200oC
Engine Control Unit
- Thick Film Chip Resistors
- Anti-Sulfur Chip Resistors
- Surge Current Thick Film Resistor: SG73_RT
- Thick Film Chip Resistors: RK73_RT
- Wide-Terminal Thick Film Resistor: WK73S/R_RT
- Circuit Protection
- Load Dump Surge Varistor: NV73DS
- Multilayer Type Metal Oxide Varistor: NV73DL
- Current Sense Resistors
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Wide-Terminal Thick Film Resistor: WK73S
- Thermal Sensor
Air Flow Sensors
Engine Ignition
Transmission Control
- Current Sense Resistors
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Wide-Terminal Thick Film Resistor: WK73S
- Thermal Sensor
Air Conditioner Control System
- Circuit Protection
- Load Dump Surge Varistor: NV73DS
- Multilayer Type Metal Oxide Varistor: NV73DL
- Current Sense Resistors
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Thermal Sensor
Electric pump
- Current Sense Resistors
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
Electric Power Steering
- Thick Film Chip Resistors
- Current Sense Resistors
- Chip Type Power Shunt: PSB • PSI/PSE •
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Thermal Sensor
- Thin Film Chip Resistors
- High Heat Resistance Thin Film Resistor: RN73H
- Thin Film Resistor Networks: RB(X),RD(X),RT(X) • RIA,RNX
Infotainment/Car Navigation
- Circuit Protection
- Chip Current Fuse: CCF • CCP • TF16VN
- Load Dump Surge Varistor: NV73DS
- Multilayer Type Metal Oxide Varistor: NV73DL
- Thermal Sensor
- Inductors
- Choke Coil Inductor: LPC
- High Precision Thin Film Inductor: KL73
- High Q Air-Core Chip Inductor: KQ
- Power Chip Inductor: LPC4545
Hybrid system DC/DC Converter
- Thick Film Chip Resistors
- Circuit Protection
- Load Dump Surge Varistor: NV73DS
- Multilayer Type Metal Oxide Varistor: NV73DL
- Current Sense Resistors
- Chip Type Power Shunt: PSB • PSI/PSE •
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P • LR72
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Thin Film Chip Resistors
- High Heat Resistance Thin Film Resistor: RN73H
- Thin Film Resistor Networks: RB(X),RD(X),RT(X) • RIA,RNX
Hybrid system
Battery Management System
- Thick Film Chip Resistors
- Circuit Protection
- Chip Current Fuse: TF16VN
- Current Sense Resistors
- Chip Type Power Shunt: PSB • PSI/PSE •
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Thin Film Chip Resistors
- High Heat Resistance Thin Film Resistor: RN73H
- Thin Film Resistor Networks: RB(X),RD(X),RT(X) • RIA,RNX
Exhaust Emissions Sensor Control Circuit
- Current Sense Resistors
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Wide-Terminal Thick Film Resistor: WK73
- Thin Film Chip Resistors
- High Heat Resistance Thin Film Resistor: RN73H
- Thin Film Resistor Networks: RB(X),RD(X),RT(X) • RIA,RNX
Tire-Pressure Monitoring System
ABS - Brake Control System
- Current Sense Resistors
- Low Resistance Flat Chip Resistor: SR73
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Thermal Sensor
- Thin Film Chip Resistors
- High Heat Resistance Thin Film Resistor: RN73H
- Thin Film Resistor Networks: RB(X),RD(X),RT(X) • RIA,RNX
- Inductors
- Choke Coil Inductor: LPC
- Power Chip Inductor: LPC4545
- Shielded Choke Coil Inductor: LCM
Body Control Module
Motor Control for Power Window, Door and Mirror
- Thick Film Chip Resistors
- Circuit Protection
- Load Dump Surge Varistor: NV73DS
- Multilayer Type Metal Oxide Varistor: NV73DL
- Current Sense Resistors
- Low Resistance Flat Chip Resistor: SR73
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P •
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Wide-Terminal Thick Film Resistor: WK73
- Inductors
- Choke Coil Inductor: LPC
- Power Chip Inductor: LPC4545
- Shielded Choke Coil Inductor: LCM
Power Seat Control/Seatbelt Control
- Circuit Protection
- Load Dump Surge Varistor: NV73DS
- Multilayer Type Metal Oxide Varistor: NV73DL
- Current Sense Resistors
- Low Resistance Flat Chip Resistor: SR73
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Inductors
- Choke Coil Inductor: LPC
- Power Chip Inductor: LPC4545
- Shielded Choke Coil Inductor: LCM
- Power Type Resistors (Leaded)
Instrument Panel, Electronic Relay
- Current Sense Resistors
- Low Resistance Flat Chip Resistor: SR73
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P
- Molded Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P
- Wide-Terminal Thick Film Resistor: WK73
HID - Headlight Control
- Thick Film Chip Resistors
- Anti-Sulfur Chip Resistors
- Surge Current Thick Film Resistor: SG73_RT
- Thick Film Chip Resistors: RK73_RT
- Wide-Terminal Thick Film Resistor: WK73S/R_RT
- Circuit Protection
- Load Dump Surge Varistor: NV73DS
- Multilayer Type Metal Oxide Varistor: NV73DL
- Current Sense Resistors
- Metal Plate Current Sense Resistor: LR
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Wide-Terminal Thick Film Resistor: WK73
- Inductors
- Choke Coil Inductor: LPC
- Power Chip Inductor: LPC4545
- Shielded Choke Coil Inductor: LCM
- Power Type Resistors (Leaded)
Smart Key System
- Current Sense Resistors
- Metal Plate Current Sense Resistor: TLR1-2A-TLRZ • TLR2B,2H,3A,3AW • TLR-W-P
- Molded Current Sense Resistor: SLW07-SLW1-SLN3-SLN5 • SL07,1,2,3,SLN2,TSL
- Inductors
Engine Control Unit
- Chip resistors: RK73
- Anti sulfuration:RK73_RT
- High power chip resistors:WK73
- Anti sulfuration:WK73S/R_RT
- Current detecting resistors:SL, TLR, WK73
- Anti surge resistors:SG73/S/P
- Anti sulfuration surge:SG73_RT
- Chip varistors:NV73DL/DS
- Thermal sensors:SDT73V