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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
CR0291R0F

CR0291R0F

Meritek

RES SMD 91 OHM 1% 3/4W 2010

0
CR02681J

CR02681J

Meritek

RES SMD 680 OHM 5% 3/4W 2010

20000
CR101R78F

CR101R78F

Meritek

RES SMD 1.78 OHM 1% 1/8W 0805

0
CR012R01F

CR012R01F

Meritek

RES SMD 2.01 OHM 1% 1W 2512

0
CR04183J

CR04183J

Meritek

RES SMD 18K OHM 5% 1/2W 1210

15000
CR0182R1F

CR0182R1F

Meritek

RES SMD 82.1 OHM 1% 1W 2512

0
CR024703F

CR024703F

Meritek

RES SMD 470K OHM 1% 3/4W 2010

0
CR01125J

CR01125J

Meritek

RES SMD 1.2M OHM 5% 1W 2512

0
CR041R03F

CR041R03F

Meritek

RES SMD 1.03 OHM 1% 1/2W 1210

0
CR04113J

CR04113J

Meritek

RES SMD 11K OHM 5% 1/2W 1210

0
CR0282R0F

CR0282R0F

Meritek

RES SMD 82 OHM 1% 3/4W 2010

0
CR012004F

CR012004F

Meritek

RES SMD 2M OHM 1% 1W 2512

0
CR014022F

CR014022F

Meritek

RES SMD 40.2K OHM 1% 1W 2512

0
CR011431F

CR011431F

Meritek

RES SMD 1.43K OHM 1% 1W 2512

0
CR011744F

CR011744F

Meritek

RES SMD 1.74M OHM 1% 1W 2512

0
CR042R70F

CR042R70F

Meritek

RES SMD 2.7 OHM 1% 1/2W 1210

0
CR012871F

CR012871F

Meritek

RES SMD 2.87K OHM 1% 1W 2512

0
CR016800F

CR016800F

Meritek

RES SMD 680 OHM 1% 1W 2512

0
CR024711F

CR024711F

Meritek

RES SMD 4.71K OHM 1% 3/4W 2010

0
CR025233F

CR025233F

Meritek

RES SMD 523K OHM 1% 3/4W 2010

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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