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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
CHP2512K3901FBW

CHP2512K3901FBW

Vishay / Sfernice

RES SMD THICK FILM 2512

0
RK73H3ATTE6R04F

RK73H3ATTE6R04F

KOA Speer Electronics, Inc.

RES 6.04 OHM 1% 1W 2512

0
RS73G2ATTD1820C

RS73G2ATTD1820C

KOA Speer Electronics, Inc.

RES 182 OHM 0.25% 1/4W 0805

0
RN73H2ETTD1931C25

RN73H2ETTD1931C25

KOA Speer Electronics, Inc.

RES 1.93K OHM 0.25% 1/4W 1210

0
HV732BTTD1654F

HV732BTTD1654F

KOA Speer Electronics, Inc.

RES 1.65M OHM 1% 1/4W 1206

0
RNCF1206DKE2R49

RNCF1206DKE2R49

Stackpole Electronics, Inc.

RES 2.49 OHM 0.5% 1/4W 1206

0
TNPW12106K81BEEA

TNPW12106K81BEEA

Vishay / Dale

RES 6.81K OHM 0.1% 1/2W 1210

0
CRCW12065K76FKEBC

CRCW12065K76FKEBC

Vishay / Dale

RES 5.76K OHM 1% 1/4W 1206

0
M55342E12B124ARWS

M55342E12B124ARWS

Vishay / Dale

RES SMD 124 OHM 0.1% 1/10W 0603

0
RN73R2ATTD5232A10

RN73R2ATTD5232A10

KOA Speer Electronics, Inc.

RES 52.3K OHM 0.05% 1/8W 0805

0
CHP1505K1502FNT

CHP1505K1502FNT

Vishay / Sfernice

RES SMD THICK FILM 1505

0
RN73R2ATTD89R8B25

RN73R2ATTD89R8B25

KOA Speer Electronics, Inc.

RES 89.8 OHM 0.1% 1/8W 0805

0
RN73H2BTTD6731B05

RN73H2BTTD6731B05

KOA Speer Electronics, Inc.

RES 6.73K OHM 0.1% 1/4W 1206

0
CR0805-JW-474ELF

CR0805-JW-474ELF

J.W. Miller / Bourns

RES SMD 470K OHM 5% 1/8W 0805

22180
RN73H2ETTD1001C50

RN73H2ETTD1001C50

KOA Speer Electronics, Inc.

RES 1K OHM 0.25% 1/4W 1210

0
RN73H2BTTD1782D100

RN73H2BTTD1782D100

KOA Speer Electronics, Inc.

RES 17.8K OHM 0.5% 1/4W 1206

0
RT0402CRD0773K2L

RT0402CRD0773K2L

Yageo

RES SMD 73.2K OHM 1/16W 0402

0
RN73R2ATTD3480F100

RN73R2ATTD3480F100

KOA Speer Electronics, Inc.

RES 348 OHM 1% 1/8W 0805

0
RN73H2ATTD3361F100

RN73H2ATTD3361F100

KOA Speer Electronics, Inc.

RES 3.36K OHM 1% 1/8W 0805

0
RG2012N-1433-D-T5

RG2012N-1433-D-T5

Susumu

RES SMD 143K OHM 0.5% 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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