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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
CR024072F

CR024072F

Meritek

RES SMD 40.7K OHM 1% 3/4W 2010

0
CR013R92F

CR013R92F

Meritek

RES SMD 3.92 OHM 1% 1W 2512

0
CR045R10F

CR045R10F

Meritek

RES SMD 5.1 OHM 1% 1/2W 1210

0
CR015R1J

CR015R1J

Meritek

RES SMD 5.1 OHM 5% 1W 2512

0
CR02184J

CR02184J

Meritek

RES SMD 180K OHM 5% 3/4W 2010

0
CR08301J

CR08301J

Meritek

RES SMD 300 OHM 5% 1/4W 1206

5000
CR01104J

CR01104J

Meritek

RES SMD 100K OHM 5% 1W 2512

12000
CR046493F

CR046493F

Meritek

RES SMD 649K OHM 1% 1/2W 1210

0
CR011541F

CR011541F

Meritek

RES SMD 1.54K OHM 1% 1W 2512

0
CR022702F

CR022702F

Meritek

RES SMD 27K OHM 1% 3/4W 2010

0
CR041R27F

CR041R27F

Meritek

RES SMD 1.27 OHM 1% 1/2W 1210

0
CR045493F

CR045493F

Meritek

RES SMD 549K OHM 1% 1/2W 1210

0
CR04430J

CR04430J

Meritek

RES SMD 43 OHM 5% 1/2W 1210

0
CR02822J

CR02822J

Meritek

RES SMD 8.2K OHM 5% 3/4W 2010

8000
CR0120R0F

CR0120R0F

Meritek

RES SMD 20 OHM 1% 1W 2512

0
CR08276J

CR08276J

Meritek

RES SMD 27M OHM 5% 1/4W 1206

0
CR044712F

CR044712F

Meritek

RES SMD 47.1K OHM 1% 1/2W 1210

0
CR043R02F

CR043R02F

Meritek

RES SMD 3.02 OHM 1% 1/2W 1210

0
CR016203F

CR016203F

Meritek

RES SMD 620K OHM 1% 1W 2512

0
CR011383F

CR011383F

Meritek

RES SMD 138K OHM 1% 1W 2512

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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