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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM20J910CT

RM20J910CT

CAL-CHIP ELECTRONICS INC.

RES SMD 91 OHM 5% 1/2W 2010

8000
RM12J131CT

RM12J131CT

CAL-CHIP ELECTRONICS INC.

RES SMD 130 OHM 5% 1/4W 1206

115000
RM12F3621CT

RM12F3621CT

CAL-CHIP ELECTRONICS INC.

RES SMD 3.62K OHM 1% 1/4W 1206

0
RM10F1333CT

RM10F1333CT

CAL-CHIP ELECTRONICS INC.

RES SMD 133K OHM 1% 1/8W 0805

15000
RN06B4022CT5-10

RN06B4022CT5-10

CAL-CHIP ELECTRONICS INC.

RES 40.2K OHM 0.1% 1/16W 0603

0
RM10J132CT

RM10J132CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.3K OHM 5% 1/8W 0805

20000
RM12J226CT

RM12J226CT

CAL-CHIP ELECTRONICS INC.

RES SMD 22M OHM 5% 1/4W 1206

20000
RM20F10R0CT

RM20F10R0CT

CAL-CHIP ELECTRONICS INC.

RES SMD 10 OHM 1% 1/2W 2010

28000
RN10F6191CT5-50

RN10F6191CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 6.19K OHM 1% 1/10W 0805

0
RM20J223CT

RM20J223CT

CAL-CHIP ELECTRONICS INC.

RES SMD 22K OHM 5% 1/2W 2010

0
RM12F2202CT

RM12F2202CT

CAL-CHIP ELECTRONICS INC.

RES SMD 22K OHM 1% 1/4W 1206

5000
RM20J390CT

RM20J390CT

CAL-CHIP ELECTRONICS INC.

RES SMD 39 OHM 5% 1/2W 2010

92000
RM10J620CT

RM10J620CT

CAL-CHIP ELECTRONICS INC.

RES SMD 62 OHM 5% 1/8W 0805

45000
RN06B1743CT5-X25

RN06B1743CT5-X25

CAL-CHIP ELECTRONICS INC.

RES SMD 174K OHM 0.1% 1/10W 0603

0
RM10F1471CT

RM10F1471CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.47K OHM 1% 1/8W 0805

140000
RM12J243CT

RM12J243CT

CAL-CHIP ELECTRONICS INC.

RES SMD 24K OHM 5% 1/4W 1206

0
RM10F4300CT

RM10F4300CT

CAL-CHIP ELECTRONICS INC.

RES SMD 430 OHM 1% 1/8W 0805

15000
RN10F3653CT5-50

RN10F3653CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 365K OHM 1% 1/10W 0805

0
RM12F2941CT

RM12F2941CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.94K OHM 1% 1/4W 1206

35000
RM12J433CT

RM12J433CT

CAL-CHIP ELECTRONICS INC.

RES SMD 43K OHM 5% 1/4W 1206

125000

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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