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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM10J431CT

RM10J431CT

CAL-CHIP ELECTRONICS INC.

RES SMD 430 OHM 5% 1/8W 0805

0
RM12F2001CT

RM12F2001CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2K OHM 1% 1/4W 1206

0
RM10F2611CT

RM10F2611CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.61K OHM 1% 1/8W 0805

35000
RN12A80R6CT1-V10

RN12A80R6CT1-V10

CAL-CHIP ELECTRONICS INC.

RES SMD 80.6 OHM 0.05% 1/4W 1206

0
RM10F3481CT

RM10F3481CT

CAL-CHIP ELECTRONICS INC.

RES SMD 3.48K OHM 1% 1/8W 0805

95000
RM10F7870CT

RM10F7870CT

CAL-CHIP ELECTRONICS INC.

RES SMD 787 OHM 1% 1/8W 0805

5000
RM10F8661CT

RM10F8661CT

CAL-CHIP ELECTRONICS INC.

RES SMD 8.66K OHM 1% 1/8W 0805

45000
RM20J202CT

RM20J202CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2K OHM 5% 1/2W 2010

0
RM10F1004CTD

RM10F1004CTD

CAL-CHIP ELECTRONICS INC.

RES SMD 1M OHM 1% 1/8W 0805

170000
RM20J5R1CT

RM20J5R1CT

CAL-CHIP ELECTRONICS INC.

RES SMD 5.1 OHM 5% 1/2W 2010

0
RM12F1332CT

RM12F1332CT

CAL-CHIP ELECTRONICS INC.

RES SMD 13.3K OHM 1% 1/4W 1206

225000
RN10B2942CT5-25

RN10B2942CT5-25

CAL-CHIP ELECTRONICS INC.

RES 29.4K OHM 0.1% 1/10W 0805

0
RM10F2002CT

RM10F2002CT

CAL-CHIP ELECTRONICS INC.

RES SMD 20K OHM 1% 1/8W 0805

155000
RN04B2492CT10-25

RN04B2492CT10-25

CAL-CHIP ELECTRONICS INC.

RES 24.9K OHM 0.1% 1/16W 0402

10000
RM10F2430CT

RM10F2430CT

CAL-CHIP ELECTRONICS INC.

RES SMD 243 OHM 1% 1/8W 0805

10000
RN10F5622CT5-50

RN10F5622CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 56.2K OHM 1% 1/10W 0805

0
RM12J333CT

RM12J333CT

CAL-CHIP ELECTRONICS INC.

RES SMD 33K OHM 5% 1/4W 1206

0
RM10F2803CT

RM10F2803CT

CAL-CHIP ELECTRONICS INC.

RES SMD 280K OHM 1% 1/8W 0805

15000
RM25F22R1CT

RM25F22R1CT

CAL-CHIP ELECTRONICS INC.

RES SMD 22.1 OHM 1% 1W 2512

0
RM10F20R5CT

RM10F20R5CT

CAL-CHIP ELECTRONICS INC.

RES SMD 20.5 OHM 1% 1/8W 0805

15000

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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