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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN73R2ATTD3322A10

RN73R2ATTD3322A10

KOA Speer Electronics, Inc.

RES 33.2K OHM 0.05% 1/8W 0805

0
WK73R2BTTD1740D

WK73R2BTTD1740D

KOA Speer Electronics, Inc.

RES 174 OHM 0.5% 1W 1206

0
RMCF0603FT8K25

RMCF0603FT8K25

Stackpole Electronics, Inc.

RES 8.25K OHM 1% 1/10W 0603

67371
RN731JTTD4931B05

RN731JTTD4931B05

KOA Speer Electronics, Inc.

RES 4.93K OHM 0.1% 1/16W 0603

0
Y162739K0000B9R

Y162739K0000B9R

VPG Foil

RES SMD 39K OHM 0.1% 1/2W 2010

0
RN73H1JTTD9651D100

RN73H1JTTD9651D100

KOA Speer Electronics, Inc.

RES 9.65K OHM 0.5% 1/10W 0603

0
RS73G1JTTD5621C

RS73G1JTTD5621C

KOA Speer Electronics, Inc.

RES 5.62K OHM 0.25% 1/5W 0603

0
RN73R2BTTD8871F25

RN73R2BTTD8871F25

KOA Speer Electronics, Inc.

RES 8.87K OHM 1% 1/4W 1206

0
RK73H1ERTTP1472D

RK73H1ERTTP1472D

KOA Speer Electronics, Inc.

RES 14.7K OHM 0.50% 1/10W 0402

0
RN73H2ATTD2581B25

RN73H2ATTD2581B25

KOA Speer Electronics, Inc.

RES 2.58K OHM 0.1% 1/8W 0805

0
CRCW060314K7DKEAP

CRCW060314K7DKEAP

Vishay / Dale

RES SMD 14.7KOHM 0.5% 1/10W 0603

0
RN73H2BTTD2551F50

RN73H2BTTD2551F50

KOA Speer Electronics, Inc.

RES 2.55K OHM 1% 1/4W 1206

0
RMCF2010FT1R20

RMCF2010FT1R20

Stackpole Electronics, Inc.

RES 1.2 OHM 1% 3/4W 2010

0
TNPW120612K9BETY

TNPW120612K9BETY

Vishay / Dale

RES 12.9K OHM 0.1% 1/4W 1206

0
RN73R1ETTP47R0D10

RN73R1ETTP47R0D10

KOA Speer Electronics, Inc.

RES 47 OHM 0.5% 1/16W 0402

0
ERJ-B2CFR013V

ERJ-B2CFR013V

Panasonic

RES 0.013 OHM 1W 1206 WIDE

0
CRCW06031K05FKEAHP

CRCW06031K05FKEAHP

Vishay / Dale

RES SMD 1.05K OHM 1% 1/3W 0603

0
RN73H2BTTD2583D100

RN73H2BTTD2583D100

KOA Speer Electronics, Inc.

RES 258K OHM 0.5% 1/4W 1206

0
RS73G1JTTD5623F

RS73G1JTTD5623F

KOA Speer Electronics, Inc.

RES 562K OHM 1% 1/5W 0603

0
RG1608Q-44R2-D-T5

RG1608Q-44R2-D-T5

Susumu

RES SMD 44.2 OHM 0.5% 1/10W 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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