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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN73H1ETTP1432B50

RN73H1ETTP1432B50

KOA Speer Electronics, Inc.

RES 14.3K OHM 0.1% 1/16W 0402

0
RN73H2BTTD2181F25

RN73H2BTTD2181F25

KOA Speer Electronics, Inc.

RES 2.18K OHM 1% 1/4W 1206

0
RN73H2ETTD1800D10

RN73H2ETTD1800D10

KOA Speer Electronics, Inc.

RES 180 OHM 0.5% 1/4W 1210

0
RN73H1ETTP19R1F50

RN73H1ETTP19R1F50

KOA Speer Electronics, Inc.

RES 19.1 OHM 1% 1/16W 0402

0
RK73H1ERTTP2002F

RK73H1ERTTP2002F

KOA Speer Electronics, Inc.

RES 20K OHM 1% 1/10W 0402

5952
RN73H2ETTD6803F50

RN73H2ETTD6803F50

KOA Speer Electronics, Inc.

RES 680K OHM 1% 1/4W 1210

0
RN73R2ETTD3793D50

RN73R2ETTD3793D50

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

0
RN73R2ETTD2290F50

RN73R2ETTD2290F50

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

0
RN73R2BTTD5761C10

RN73R2BTTD5761C10

KOA Speer Electronics, Inc.

RES 5.76K OHM 0.25% 1/4W 1206

0
RN731JTTD1042B05

RN731JTTD1042B05

KOA Speer Electronics, Inc.

RES 10.4K OHM 0.1% 1/16W 0603

0
RN73H2BTTD88R7F50

RN73H2BTTD88R7F50

KOA Speer Electronics, Inc.

RES 88.7 OHM 1% 1/4W 1206

0
RN73R2BTTD21R5F50

RN73R2BTTD21R5F50

KOA Speer Electronics, Inc.

RES 21.5 OHM 1% 1/4W 1206

0
RK73G1ETTP6042F

RK73G1ETTP6042F

KOA Speer Electronics, Inc.

RES 60.4K OHM 1% 1/10W 0402

0
RN73H1JTTD4751D10

RN73H1JTTD4751D10

KOA Speer Electronics, Inc.

RES 4.75K OHM 0.5% 1/10W 0603

0
SG73P2ATTD76R8D

SG73P2ATTD76R8D

KOA Speer Electronics, Inc.

RES 76.8 OHM 0.5% 1/4W 0805

0
HV73V2ATTD5363D

HV73V2ATTD5363D

KOA Speer Electronics, Inc.

RES 536K OHM 0.5% 1/4W 0805

0
RK73H2ATTD5R10F

RK73H2ATTD5R10F

KOA Speer Electronics, Inc.

RES 5.1 OHM 1% 1/4W 0805

4877
RN73H2BTTD1180F50

RN73H2BTTD1180F50

KOA Speer Electronics, Inc.

RES 118 OHM 1% 1/4W 1206

0
RK73H2BTTD3901F

RK73H2BTTD3901F

KOA Speer Electronics, Inc.

RES 3.9K OHM 1% 1/4W 1206

4955
RN73H2BTTD2153F10

RN73H2BTTD2153F10

KOA Speer Electronics, Inc.

RES 215K OHM 1% 1/4W 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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