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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN73H1JTTD1562C10

RN73H1JTTD1562C10

KOA Speer Electronics, Inc.

RES 15.6K OHM 0.25% 1/10W 0603

0
RN73R2BTTD7501B25

RN73R2BTTD7501B25

KOA Speer Electronics, Inc.

RES 7.5K OHM 0.1% 1/4W 1206

7601
RN73H2ETTD3241B50

RN73H2ETTD3241B50

KOA Speer Electronics, Inc.

RES 3.24K OHM 0.1% 1/4W 1210

0
RN73H2BTTD1643B05

RN73H2BTTD1643B05

KOA Speer Electronics, Inc.

RES 164K OHM 0.1% 1/4W 1206

0
RK73H1JTTD2431D

RK73H1JTTD2431D

KOA Speer Electronics, Inc.

RES 2.43K OHM 0.5% 1/10W 0603

0
RN73R2ETTD2713D25

RN73R2ETTD2713D25

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

0
RN73R2ATTD4590F100

RN73R2ATTD4590F100

KOA Speer Electronics, Inc.

RES 459 OHM 1% 1/8W 0805

0
RN73H1ETTP2260C10

RN73H1ETTP2260C10

KOA Speer Electronics, Inc.

RES 226 OHM 0.25% 1/16W 0402

0
RN73H2BTTD1113D50

RN73H2BTTD1113D50

KOA Speer Electronics, Inc.

RES 111K OHM 0.5% 1/4W 1206

0
RN73H2BTTD1470A05

RN73H2BTTD1470A05

KOA Speer Electronics, Inc.

RES 147 OHM 0.05% 1/4W 1206

0
RS73G2ATTD3403B

RS73G2ATTD3403B

KOA Speer Electronics, Inc.

RES 340K OHM 0.1% 1/4W 0805

0
RN73H2ATTD6981F50

RN73H2ATTD6981F50

KOA Speer Electronics, Inc.

RES 6.98K OHM 1% 1/8W 0805

0
RN73R1JTTD2402D100

RN73R1JTTD2402D100

KOA Speer Electronics, Inc.

RES 24K OHM 0.5% 1/10W 0603

0
RK73B2BRTTD681J

RK73B2BRTTD681J

KOA Speer Electronics, Inc.

RES 680 OHM 5% 1/4W 1206

0
RN73R2ATTD7961F50

RN73R2ATTD7961F50

KOA Speer Electronics, Inc.

RES 7.96K OHM 1% 1/8W 0805

0
RN73R2ATTD5832B25

RN73R2ATTD5832B25

KOA Speer Electronics, Inc.

RES 58.3K OHM 0.1% 1/8W 0805

0
RN73R2ATTD6730A25

RN73R2ATTD6730A25

KOA Speer Electronics, Inc.

RES 673 OHM 0.05% 1/8W 0805

0
RN73H1ETTP6650C10

RN73H1ETTP6650C10

KOA Speer Electronics, Inc.

RES 665 OHM 0.25% 1/16W 0402

0
RK73G1ETTP1270D

RK73G1ETTP1270D

KOA Speer Electronics, Inc.

RES 127 OHM 0.5% 1/10W 0402

0
RN731JTTD5111A10

RN731JTTD5111A10

KOA Speer Electronics, Inc.

RES 5.11K OHM 0.05% 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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