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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM10F2702CT

RM10F2702CT

CAL-CHIP ELECTRONICS INC.

RES SMD 27K OHM 1% 1/8W 0805

25000
RM25J121CT

RM25J121CT

CAL-CHIP ELECTRONICS INC.

RES SMD 120 OHM 5% 1W 2512

24000
RN10F2262CT5-50

RN10F2262CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 22.6K OHM 1% 1/10W 0805

0
RN04B6042CT1-25

RN04B6042CT1-25

CAL-CHIP ELECTRONICS INC.

RES 60.4K OHM 0.1% 1/16W 0402

1000
RM12F8061CT

RM12F8061CT

CAL-CHIP ELECTRONICS INC.

RES SMD 8.06K OHM 1% 1/4W 1206

20000
RM10J750CT

RM10J750CT

CAL-CHIP ELECTRONICS INC.

RES SMD 75 OHM 5% 1/8W 0805

15000
RM20J105CT

RM20J105CT

CAL-CHIP ELECTRONICS INC.

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

4000
RM10F2612CT

RM10F2612CT

CAL-CHIP ELECTRONICS INC.

RES SMD 26.1K OHM 1% 1/8W 0805

25000
RM12F39R0CT

RM12F39R0CT

CAL-CHIP ELECTRONICS INC.

RES SMD 39 OHM 1% 1/4W 1206

0
RM12F1103CT

RM12F1103CT

CAL-CHIP ELECTRONICS INC.

RES SMD 110K OHM 1% 1/4W 1206

20000
RM10F6490CT

RM10F6490CT

CAL-CHIP ELECTRONICS INC.

RES SMD 649 OHM 1% 1/8W 0805

40000
RM10F1542CT

RM10F1542CT

CAL-CHIP ELECTRONICS INC.

RES SMD 15.4K OHM 1% 1/8W 0805

0
RM14F1211CT

RM14F1211CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.21K OHM 1% 1/3W 1210

15000
RN04D4990CT10-25

RN04D4990CT10-25

CAL-CHIP ELECTRONICS INC.

RES SMD 499 OHM 0.5% 1/16W 0402

10000
RN06B1741CT5-X25

RN06B1741CT5-X25

CAL-CHIP ELECTRONICS INC.

RES 1.74K OHM 0.1% 1/10W 0603

5000
RM14F1213CT

RM14F1213CT

CAL-CHIP ELECTRONICS INC.

RES SMD 121K OHM 1% 1/3W 1210

50000
RM10F5111CT

RM10F5111CT

CAL-CHIP ELECTRONICS INC.

RES SMD 5.11K OHM 1% 1/8W 0805

85000
RM10F4750CT

RM10F4750CT

CAL-CHIP ELECTRONICS INC.

RES SMD 475 OHM 1% 1/8W 0805

215000
RM12F3742CT

RM12F3742CT

CAL-CHIP ELECTRONICS INC.

RES SMD 37.4K OHM 1% 1/4W 1206

30000
RM10F7323CT

RM10F7323CT

CAL-CHIP ELECTRONICS INC.

RES SMD 732K OHM 1% 1/8W 0805

160000

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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