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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM12F9091CT

RM12F9091CT

CAL-CHIP ELECTRONICS INC.

RES SMD 9.09K OHM 1% 1/4W 1206

10000
RM10J473CT

RM10J473CT

CAL-CHIP ELECTRONICS INC.

RES SMD 47K OHM 5% 1/8W 0805

990000
RM14F9090CT

RM14F9090CT

CAL-CHIP ELECTRONICS INC.

RES SMD 909 OHM 1% 1/3W 1210

100000
RM20J222CT

RM20J222CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.2K OHM 5% 1/2W 2010

44000
RM10F68R0CT

RM10F68R0CT

CAL-CHIP ELECTRONICS INC.

RES SMD 68 OHM 1% 1/8W 0805

35000
RM12F3900CT

RM12F3900CT

CAL-CHIP ELECTRONICS INC.

RES SMD 390 OHM 1% 1/4W 1206

0
RM12F1200CT-H

RM12F1200CT-H

CAL-CHIP ELECTRONICS INC.

RES SMD 120 OHM 1% 1/4W 1206

10000
RN04D2211CT10-25

RN04D2211CT10-25

CAL-CHIP ELECTRONICS INC.

RES 2.21K OHM 0.5% 1/16W 0402

20000
RN04D3652CT10-25

RN04D3652CT10-25

CAL-CHIP ELECTRONICS INC.

RES 36.5K OHM 0.5% 1/16W 0402

10000
RM10F1204CT

RM10F1204CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.2M OHM 1% 1/8W 0805

15000
RM14J124CT

RM14J124CT

CAL-CHIP ELECTRONICS INC.

RES SMD 120K OHM 5% 1/3W 1210

0
RM14F3322CT

RM14F3322CT

CAL-CHIP ELECTRONICS INC.

RES SMD 33.2K OHM 1% 1/3W 1210

5000
RN04F1473CT10-25

RN04F1473CT10-25

CAL-CHIP ELECTRONICS INC.

RES SMD 147K OHM 1% 1/16W 0402

0
RN12F2612CT1-50

RN12F2612CT1-50

CAL-CHIP ELECTRONICS INC.

RES SMD 26.1K OHM 1% 1/8W 1206

0
RM20F14R3CT

RM20F14R3CT

CAL-CHIP ELECTRONICS INC.

RES SMD 14.3 OHM 1% 1/2W 2010

0
RN06B3161CT5-25

RN06B3161CT5-25

CAL-CHIP ELECTRONICS INC.

RES 3.16K OHM 0.1% 1/16W 0603

0
RN25C1R00CT4-T25

RN25C1R00CT4-T25

CAL-CHIP ELECTRONICS INC.

RES SMD 1 OHM 0.25% 1W 2512

0
RM12F8872CT

RM12F8872CT

CAL-CHIP ELECTRONICS INC.

RES SMD 88.7K OHM 1% 1/4W 1206

0
RM12F1433CT

RM12F1433CT

CAL-CHIP ELECTRONICS INC.

RES SMD 143K OHM 1% 1/4W 1206

10000
RM12F7323CT

RM12F7323CT

CAL-CHIP ELECTRONICS INC.

RES SMD 732K OHM 1% 1/4W 1206

5000

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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