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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN73R2ATTD2431F10

RN73R2ATTD2431F10

KOA Speer Electronics, Inc.

RES 2.43K OHM 1% 1/8W 0805

0
RN73H2ATTD4073C50

RN73H2ATTD4073C50

KOA Speer Electronics, Inc.

RES 407K OHM 0.25% 1/8W 0805

0
RN73H1ETTP1763F25

RN73H1ETTP1763F25

KOA Speer Electronics, Inc.

RES 176K OHM 1% 1/16W 0402

0
RN73R2ATTD2842A25

RN73R2ATTD2842A25

KOA Speer Electronics, Inc.

RES 28.4K OHM 0.05% 1/8W 0805

0
RN73H2BTTD9420B10

RN73H2BTTD9420B10

KOA Speer Electronics, Inc.

RES 942 OHM 0.1% 1/4W 1206

0
RN73H1ETTP35R7D50

RN73H1ETTP35R7D50

KOA Speer Electronics, Inc.

RES 35.7 OHM 0.5% 1/16W 0402

0
RK73H2ATTD3901D

RK73H2ATTD3901D

KOA Speer Electronics, Inc.

RES 3.9K OHM 0.5% 1/4W 0805

0
RK73H2HTTE2491D

RK73H2HTTE2491D

KOA Speer Electronics, Inc.

RES 2.49K OHM 0.5% 3/4W 2010

0
RS73G2ATTD6811D

RS73G2ATTD6811D

KOA Speer Electronics, Inc.

RES 6.81K OHM 0.5% 1/4W 0805

0
RN73H1JTTD1821C50

RN73H1JTTD1821C50

KOA Speer Electronics, Inc.

RES 1.82K OHM 0.25% 1/10W 0603

0
RN73H1JTTD2152F50

RN73H1JTTD2152F50

KOA Speer Electronics, Inc.

RES 21.5K OHM 1% 1/10W 0603

0
RN73R2ATTD1603D50

RN73R2ATTD1603D50

KOA Speer Electronics, Inc.

RES 160K OHM 0.5% 1/8W 0805

0
SR732ERTTD10R0F

SR732ERTTD10R0F

KOA Speer Electronics, Inc.

RES 10 OHM 1% 1/2W 1210

9878
SG73P2ETTD1373F

SG73P2ETTD1373F

KOA Speer Electronics, Inc.

RES 137K OHM 1% 1/2W 1210

0
RK73B1JTTD1R3G

RK73B1JTTD1R3G

KOA Speer Electronics, Inc.

RES 1.3 OHM 2% 1/8W 0603

0
RK73G2ATTD97R6D

RK73G2ATTD97R6D

KOA Speer Electronics, Inc.

THICKFILM RESISTOR 0805

0
SR732ARTTD100J

SR732ARTTD100J

KOA Speer Electronics, Inc.

RES 10 OHM 5% 1/3W 0805

0
RS73F2BTTD76R8C

RS73F2BTTD76R8C

KOA Speer Electronics, Inc.

RES 76.8 OHM 0.25% 1/3W 1206

0
RN73R2BTTD2740C25

RN73R2BTTD2740C25

KOA Speer Electronics, Inc.

RES 274 OHM 0.25% 1/4W 1206

0
RN73R2ETTD3702B50

RN73R2ETTD3702B50

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

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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