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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN73H1ETTP3161B50

RN73H1ETTP3161B50

KOA Speer Electronics, Inc.

RES 3.16K OHM 0.1% 1/16W 0402

0
RN73R2ETTD6260B50

RN73R2ETTD6260B50

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

0
WK73R2JTTE8063F

WK73R2JTTE8063F

KOA Speer Electronics, Inc.

RES 806K OHM 1% 1W 1812

0
RN73H2ATTD27R4C25

RN73H2ATTD27R4C25

KOA Speer Electronics, Inc.

RES 27.4 OHM 0.25% 1/8W 0805

0
RS73G2ATTD51R0C

RS73G2ATTD51R0C

KOA Speer Electronics, Inc.

RES 51 OHM 0.25% 1/4W 0805

0
RN731JTTD4372F25

RN731JTTD4372F25

KOA Speer Electronics, Inc.

RES 43.7K OHM 1% 1/16W 0603

0
RN73R2BTTD5971F25

RN73R2BTTD5971F25

KOA Speer Electronics, Inc.

RES 5.97K OHM 1% 1/4W 1206

0
RK73H1ERTTP1102F

RK73H1ERTTP1102F

KOA Speer Electronics, Inc.

RES 11K OHM 1% 1/10W 0402

18474
RK73H1JTTD2433F

RK73H1JTTD2433F

KOA Speer Electronics, Inc.

RES 243K OHM 1% 1/10W 0603

13444
RN73R1JTTD3611A10

RN73R1JTTD3611A10

KOA Speer Electronics, Inc.

RES 3.61K OHM 0.05% 1/10W 0603

0
RN73H1JTTD1302F100

RN73H1JTTD1302F100

KOA Speer Electronics, Inc.

RES 13K OHM 1% 1/10W 0603

0
SG73S1ETTP1R74F

SG73S1ETTP1R74F

KOA Speer Electronics, Inc.

RES 1.74 OHM 1% 1/8W 0402

0
RN73H2ATTD33R0F25

RN73H2ATTD33R0F25

KOA Speer Electronics, Inc.

RES 33 OHM 1% 1/8W 0805

0
RK73H2ERTTD1620D

RK73H2ERTTD1620D

KOA Speer Electronics, Inc.

RESISTOR ANTI SULFUR

0
RN73R1ETTP2212C25

RN73R1ETTP2212C25

KOA Speer Electronics, Inc.

RES 22.1K OHM 0.25% 1/16W 0402

0
RN731JTTD51R1F50

RN731JTTD51R1F50

KOA Speer Electronics, Inc.

RES 51.1 OHM 1% 1/16W 0603

0
RN73H2ATTD3093C10

RN73H2ATTD3093C10

KOA Speer Electronics, Inc.

RES 309K OHM 0.25% 1/8W 0805

0
RN73H2BTTD1740F100

RN73H2BTTD1740F100

KOA Speer Electronics, Inc.

RES 174 OHM 1% 1/4W 1206

0
RN731JTTD4172A10

RN731JTTD4172A10

KOA Speer Electronics, Inc.

RES 41.7K OHM 0.05% 1/16W 0603

0
RN73R2ATTD3600A05

RN73R2ATTD3600A05

KOA Speer Electronics, Inc.

RES 360 OHM 0.05% 1/8W 0805

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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