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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN73R2ATTD22R0C50

RN73R2ATTD22R0C50

KOA Speer Electronics, Inc.

RES 22 OHM 0.25% 1/8W 0805

0
RN73H2ETTD9200B10

RN73H2ETTD9200B10

KOA Speer Electronics, Inc.

RES 920 OHM 0.1% 1/4W 1210

0
RS73F2BTTD4531C

RS73F2BTTD4531C

KOA Speer Electronics, Inc.

RES 4.53K OHM 0.25% 1/3W 1206

0
RN73R2BTTD3741B50

RN73R2BTTD3741B50

KOA Speer Electronics, Inc.

RES 3.74K OHM 0.1% 1/4W 1206

0
RN73R1JTTD24R3D50

RN73R1JTTD24R3D50

KOA Speer Electronics, Inc.

RES 24.3 OHM 0.5% 1/10W 0603

0
RN73H2BTTD1143D100

RN73H2BTTD1143D100

KOA Speer Electronics, Inc.

RES 114K OHM 0.5% 1/4W 1206

0
RN73H1ETTP4271C25

RN73H1ETTP4271C25

KOA Speer Electronics, Inc.

RES 4.27K OHM 0.25% 1/16W 0402

0
RN73R1ETTP1820F25

RN73R1ETTP1820F25

KOA Speer Electronics, Inc.

RES 182 OHM 1% 1/16W 0402

0
RN73H2ETTD8451B10

RN73H2ETTD8451B10

KOA Speer Electronics, Inc.

RES 8.45K OHM 0.1% 1/4W 1210

0
RN73R2ETTD4372A10

RN73R2ETTD4372A10

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

0
RS73G2ATTD2553B

RS73G2ATTD2553B

KOA Speer Electronics, Inc.

RES 255K OHM 0.1% 1/4W 0805

0
RN73R2ATTD60R4A10

RN73R2ATTD60R4A10

KOA Speer Electronics, Inc.

RES 60.4 OHM 0.05% 1/8W 0805

0
RN73R2ETTD1582F50

RN73R2ETTD1582F50

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

0
RN73H2ATTD5422C50

RN73H2ATTD5422C50

KOA Speer Electronics, Inc.

RES 54.2K OHM 0.25% 1/8W 0805

0
RN73H2ATTD7963D100

RN73H2ATTD7963D100

KOA Speer Electronics, Inc.

RES 796K OHM 0.5% 1/8W 0805

0
RN73R2ATTD39R2B25

RN73R2ATTD39R2B25

KOA Speer Electronics, Inc.

RES 39.2 OHM 0.1% 1/8W 0805

0
RN73H2BTTD3902D100

RN73H2BTTD3902D100

KOA Speer Electronics, Inc.

RES 39K OHM 0.5% 1/4W 1206

0
RN73R1ETTP1271D25

RN73R1ETTP1271D25

KOA Speer Electronics, Inc.

RES 1.27K OHM 0.5% 1/16W 0402

0
RK73H1JTTD9761F

RK73H1JTTD9761F

KOA Speer Electronics, Inc.

RES 9.76K OHM 1% 1/10W 0603

2922
RN73R2ATTD83R5B25

RN73R2ATTD83R5B25

KOA Speer Electronics, Inc.

RES 83.5 OHM 0.1% 1/8W 0805

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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