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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM12F30R1CT

RM12F30R1CT

CAL-CHIP ELECTRONICS INC.

RES SMD 30.1 OHM 1% 1/4W 1206

25000
RM12J391CT

RM12J391CT

CAL-CHIP ELECTRONICS INC.

RES SMD 390 OHM 5% 1/4W 1206

45000
RN04B9310CT10-25

RN04B9310CT10-25

CAL-CHIP ELECTRONICS INC.

RES SMD 931 OHM 0.1% 1/16W 0402

10000
RM14F2491CT

RM14F2491CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.49K OHM 1% 1/3W 1210

0
RN25D10R0CT4-25

RN25D10R0CT4-25

CAL-CHIP ELECTRONICS INC.

RES SMD 10 OHM 0.5% 1/2W 2512

0
RN10F2003CT5-50

RN10F2003CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 200K OHM 1% 1/10W 0805

15000
RM12F2741CT

RM12F2741CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.74K OHM 1% 1/4W 1206

25000
RM10F2320CT

RM10F2320CT

CAL-CHIP ELECTRONICS INC.

RES SMD 232 OHM 1% 1/8W 0805

45000
RM10F31R6CT

RM10F31R6CT

CAL-CHIP ELECTRONICS INC.

RES SMD 31.6 OHM 1% 1/8W 0805

5000
RM10F17R4CT

RM10F17R4CT

CAL-CHIP ELECTRONICS INC.

RES SMD 17.4 OHM 1% 1/8W 0805

40000
RN10D7501CT5-50

RN10D7501CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 7.5K OHM 0.5% 1/10W 0805

0
RM12F3162CT

RM12F3162CT

CAL-CHIP ELECTRONICS INC.

RES SMD 31.6K OHM 1% 1/4W 1206

0
RM25J183CT

RM25J183CT

CAL-CHIP ELECTRONICS INC.

RES SMD 18K OHM 5% 1W 2512

16000
RM14F1003CT

RM14F1003CT

CAL-CHIP ELECTRONICS INC.

RES SMD 100K OHM 1% 1/3W 1210

0
RM12F40R2CT

RM12F40R2CT

CAL-CHIP ELECTRONICS INC.

RES SMD 40.2 OHM 1% 1/4W 1206

40000
RM10J474CT

RM10J474CT

CAL-CHIP ELECTRONICS INC.

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

135000
RM14F5361CT

RM14F5361CT

CAL-CHIP ELECTRONICS INC.

RES SMD 5.36K OHM 1% 1/3W 1210

70000
RN12F1002CT5-50

RN12F1002CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 10K OHM 1% 1/8W 1206

0
RM10J362CT

RM10J362CT

CAL-CHIP ELECTRONICS INC.

RES SMD 3.6K OHM 5% 1/8W 0805

10000
RN06B1822CT1-25

RN06B1822CT1-25

CAL-CHIP ELECTRONICS INC.

RES 18.2K OHM 0.1% 1/16W 0603

2000

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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