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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
WK73R1ETTP7320F

WK73R1ETTP7320F

KOA Speer Electronics, Inc.

RES 732 OHM 1% 1/3W 0402

0
RN73R1JTTD4871B05

RN73R1JTTD4871B05

KOA Speer Electronics, Inc.

RES 4.87K OHM 0.1% 1/10W 0603

0
RK73H2ATTD9533F

RK73H2ATTD9533F

KOA Speer Electronics, Inc.

RES 953K OHM 1% 1/4W 0805

9616
SG73P2ATTD1R5G

SG73P2ATTD1R5G

KOA Speer Electronics, Inc.

RES 1.5 OHM 2% 1/4W 0805

0
RN73R2ATTD1431C50

RN73R2ATTD1431C50

KOA Speer Electronics, Inc.

RES 1.43K OHM 0.25% 1/8W 0805

0
SR731JTTDR150F

SR731JTTDR150F

KOA Speer Electronics, Inc.

CURRENT SENSE RESISTOR

0
RN73R2ATTD8352D100

RN73R2ATTD8352D100

KOA Speer Electronics, Inc.

RES 83.5K OHM 0.5% 1/8W 0805

0
RN73H1ETTP15R2F50

RN73H1ETTP15R2F50

KOA Speer Electronics, Inc.

RES 15.2 OHM 1% 1/16W 0402

0
RK73H2ETTD1242F

RK73H2ETTD1242F

KOA Speer Electronics, Inc.

RES 12.4K OHM 1% 1/2W 1210

478
RN73H1JTTD1720F100

RN73H1JTTD1720F100

KOA Speer Electronics, Inc.

RES 172 OHM 1% 1/10W 0603

0
RS73F2ATTD9312B

RS73F2ATTD9312B

KOA Speer Electronics, Inc.

RES 93.1K OHM 0.1% 1/4W 0805

0
RK73H2ERTTD9313D

RK73H2ERTTD9313D

KOA Speer Electronics, Inc.

RESISTOR ANTI SULFUR

0
RN73R1JTTD1040D10

RN73R1JTTD1040D10

KOA Speer Electronics, Inc.

RES 104 OHM 0.5% 1/10W 0603

0
HV733ATTE3303D

HV733ATTE3303D

KOA Speer Electronics, Inc.

RES 330K OHM 0.5% 1W 2512

0
RN73R2ETTD5562F100

RN73R2ETTD5562F100

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

0
RN73R2BTTD1960F25

RN73R2BTTD1960F25

KOA Speer Electronics, Inc.

RES 196 OHM 1% 1/4W 1206

0
RN73R2ETTD4173C10

RN73R2ETTD4173C10

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

0
RN73R2ATTD9203B25

RN73R2ATTD9203B25

KOA Speer Electronics, Inc.

RES 920K OHM 0.1% 1/8W 0805

0
RN73R1JTTD1352F100

RN73R1JTTD1352F100

KOA Speer Electronics, Inc.

RES 13.5K OHM 1% 1/10W 0603

0
RN73H1JTTD5110D25

RN73H1JTTD5110D25

KOA Speer Electronics, Inc.

RES 511 OHM 0.5% 1/10W 0603

0

Chip Resistors-Surface Mount

1. Overview

Surface Mount Chip Resistors (SMD Resistors) are passive electronic components designed to limit current flow and divide voltages in printed circuit boards (PCBs). As key elements in Surface Mount Technology (SMT), they enable high-density PCB layouts and automated manufacturing. Their miniaturized footprint and reliability make them essential for modern electronics, including smartphones, automotive systems, and industrial equipment.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Thick Film ResistorsCost-effective, standard tolerance ( 1%-5%), power ratings up to 1WConsumer electronics, power supplies
Thin Film ResistorsHigh precision ( 0.01%), low noise, stable temperature coefficientsMedical devices, precision instrumentation
Power ResistorsHigh power dissipation (up to 3W), robust thermal managementMotor drives, EV battery management systems
Network ResistorsMultiple resistors in single package, matched temperature coefficientsDigital circuits, memory modules
Wirewound ResistorsHigh inductance, precise low-resistance valuesAudio amplifiers, industrial control systems

3. Structure and Composition

Typical SMD resistors consist of: - Ceramic substrate (Alumina, 96% Al2O3) - Resistive layer (Ruthenium oxide for thick film, Nichrome for thin film) - Termination electrodes (Ni/Sn or Ag/Pd metallization) - Protective coating (Epoxy or glass encapsulation) Standard packages follow EIA dimensions (e.g., 0402, 0603, 0805).

4. Key Technical Specifications

ParameterDescriptionImportance
Resistance Range1 to 10M (film), 0.1 to 100k (power)Determines current control capability
Tolerance 0.01% (precision) to 5% (general)Impacts circuit accuracy
Power Rating0.05W to 3W @ 70 CDefines thermal dissipation limits
TCR 5ppm/ C (thin film) to 200ppm/ CAffects stability over temperature
Operating Temp-55 C to +155 CDefines environmental reliability
Voltage Coefficient<0.1ppm/VEnsures voltage stability

5. Application Fields

  • Consumer Electronics: Smartphones, wearables, IoT devices
  • Automotive: ADAS sensors, battery management systems, ECUs
  • Industrial: PLCs, motor drives, power converters
  • Telecom: 5G base stations, optical transceivers
  • Medical: Diagnostic equipment, implantable devices

6. Leading Manufacturers and Products

ManufacturerRepresentative SeriesKey Features
YageoCRCW Series0.05W-1W, 0.1% tolerance
VishayCRCWE SeriesThin film, TCR 25ppm/ C
ROHMMCR SeriesPower resistors up to 2W
OhmitePWR SeriesHigh-power 3W devices
BournsCRCU SeriesNetwork resistors with 8-element arrays

7. Selection Recommendations

Consider: - Required resistance tolerance and power rating - Operating temperature range (automotive needs -40 C to +125 C) - Package size constraints (e.g., 0402 for mobile devices) - Long-term stability requirements (medical applications prefer thin film) - Cost vs. performance trade-offs (consumer vs. industrial use) Example: For smartphone power management, select 0603 thick film resistors with 1% tolerance and 125 C rating.

8. Industry Trends

Key trends include: - Miniaturization: Development of 0201 and 01005 packages - Higher precision: Sub-0.01% tolerance thin film resistors - Enhanced thermal management: New materials for power densities >1W/mm - Automotive growth: AEC-Q200 qualified parts for EVs - Smart manufacturing: AI-driven resistor selection tools - Sustainability: Lead-free and halogen-free material adoption

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