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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN73H2ETTD5972B50

RN73H2ETTD5972B50

KOA Speer Electronics, Inc.

RES 59.7K OHM 0.1% 1/4W 1210

0
RN73H2ATTD6812C10

RN73H2ATTD6812C10

KOA Speer Electronics, Inc.

RES 68.1K OHM 0.25% 1/8W 0805

0
SG73S1ETTP6R04F

SG73S1ETTP6R04F

KOA Speer Electronics, Inc.

RES 6.04 OHM 1% 1/8W 0402

0
RN73H2ATTD3920F25

RN73H2ATTD3920F25

KOA Speer Electronics, Inc.

RES 392 OHM 1% 1/8W 0805

0
RN73H2ETTD1072F50

RN73H2ETTD1072F50

KOA Speer Electronics, Inc.

RES 10.7K OHM 1% 1/4W 1210

0
RN73R2BTTD9102C25

RN73R2BTTD9102C25

KOA Speer Electronics, Inc.

RES 91K OHM 0.25% 1/4W 1206

0
SR732BTTDR287D

SR732BTTDR287D

KOA Speer Electronics, Inc.

CURRENT SENSE RESISTOR

0
RN73R2BTTD6571A10

RN73R2BTTD6571A10

KOA Speer Electronics, Inc.

RES 6.57K OHM 0.05% 1/4W 1206

0
RN73R2ATTD8202A10

RN73R2ATTD8202A10

KOA Speer Electronics, Inc.

RES 82K OHM 0.05% 1/8W 0805

0
RN73R1ETTP1210B25

RN73R1ETTP1210B25

KOA Speer Electronics, Inc.

RES 121 OHM 0.1% 1/16W 0402

0
RN73R1JTTD51R7D25

RN73R1JTTD51R7D25

KOA Speer Electronics, Inc.

RES 51.7 OHM 0.5% 1/10W 0603

0
RN73R2BTTD7500D10

RN73R2BTTD7500D10

KOA Speer Electronics, Inc.

RES 750 OHM 0.5% 1/4W 1206

0
RN731JTTD1401D50

RN731JTTD1401D50

KOA Speer Electronics, Inc.

RES 1.4K OHM 0.5% 1/16W 0603

0
RN73R2ATTD75R9C10

RN73R2ATTD75R9C10

KOA Speer Electronics, Inc.

RES 75.9 OHM 0.25% 1/8W 0805

0
SG73P2ATTD1500F

SG73P2ATTD1500F

KOA Speer Electronics, Inc.

RES 150 OHM 1% 1/4W 0805

10000
RN73H2ATTD1620B50

RN73H2ATTD1620B50

KOA Speer Electronics, Inc.

RES 162 OHM 0.1% 1/8W 0805

0
RN73R2ETTD1382D25

RN73R2ETTD1382D25

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

0
RN73R1ETTP4072C50

RN73R1ETTP4072C50

KOA Speer Electronics, Inc.

RES 40.7K OHM 0.25% 1/16W 0402

0
RS73F2BTTD1070C

RS73F2BTTD1070C

KOA Speer Electronics, Inc.

RES 107 OHM 0.25% 1/3W 1206

0
RN731JTTD1910D25

RN731JTTD1910D25

KOA Speer Electronics, Inc.

RES 191 OHM 0.5% 1/16W 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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