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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN73H1JTTD8870D50

RN73H1JTTD8870D50

KOA Speer Electronics, Inc.

RES 887 OHM 0.5% 1/10W 0603

0
HV732HTTE114G

HV732HTTE114G

KOA Speer Electronics, Inc.

RES 110K OHM 2% 1/2W 2010

0
RN73R1ETTP1380D25

RN73R1ETTP1380D25

KOA Speer Electronics, Inc.

RES 138 OHM 0.5% 1/16W 0402

0
RN73R1ETTP8660C10

RN73R1ETTP8660C10

KOA Speer Electronics, Inc.

RES 866 OHM 0.25% 1/16W 0402

0
SG73S1ETTP1150F

SG73S1ETTP1150F

KOA Speer Electronics, Inc.

RES 115 OHM 1% 1/8W 0402

0
RN73H2BTTD3611F10

RN73H2BTTD3611F10

KOA Speer Electronics, Inc.

RES 3.61K OHM 1% 1/4W 1206

0
RN73R1JTTD1373D25

RN73R1JTTD1373D25

KOA Speer Electronics, Inc.

RES 137K OHM 0.5% 1/10W 0603

0
RN73H1JTTD1841C10

RN73H1JTTD1841C10

KOA Speer Electronics, Inc.

RES 1.84K OHM 0.25% 1/10W 0603

0
RN731JTTD95R3F100

RN731JTTD95R3F100

KOA Speer Electronics, Inc.

RES 95.3 OHM 1% 1/16W 0603

0
SG73S2ETTD7152D

SG73S2ETTD7152D

KOA Speer Electronics, Inc.

RES 71.5K OHM 0.5% 1/2W 1210

0
SR732BTTDR75J

SR732BTTDR75J

KOA Speer Electronics, Inc.

RES 750M OHM 5% 1/3W 1206

4980
RN73H2ATTD6730C50

RN73H2ATTD6730C50

KOA Speer Electronics, Inc.

RES 673 OHM 0.25% 1/8W 0805

0
RN73H2ATTD1291C10

RN73H2ATTD1291C10

KOA Speer Electronics, Inc.

RES 1.29K OHM 0.25% 1/8W 0805

0
RK73B1JRTTD362G

RK73B1JRTTD362G

KOA Speer Electronics, Inc.

RES 3.6 KOHM 2% 1/10W 0603

0
RN73R2BTTD2402A05

RN73R2BTTD2402A05

KOA Speer Electronics, Inc.

RES 24K OHM 0.05% 1/4W 1206

0
RN73H2BTTD1330D10

RN73H2BTTD1330D10

KOA Speer Electronics, Inc.

RES 133 OHM 0.5% 1/4W 1206

0
RN73R1JTTD10R1D25

RN73R1JTTD10R1D25

KOA Speer Electronics, Inc.

RES 10.1 OHM 0.5% 1/10W 0603

0
RS73F2ATTD15R8F

RS73F2ATTD15R8F

KOA Speer Electronics, Inc.

RES 15.8 OHM 1% 1/4W 0805

0
SG73P2BTTD685G

SG73P2BTTD685G

KOA Speer Electronics, Inc.

RES 6.8M OHM 2% 1/3W 1206

0
SR732BRTTDR150F

SR732BRTTDR150F

KOA Speer Electronics, Inc.

RES 150M OHM 1% 1/3W 1206

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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