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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN06B2212CT5-25

RN06B2212CT5-25

CAL-CHIP ELECTRONICS INC.

RES 22.1K OHM 0.1% 1/16W 0603

5000
RM12F2400CT

RM12F2400CT

CAL-CHIP ELECTRONICS INC.

RES SMD 240 OHM 1% 1/4W 1206

20000
RM06F4R99CT

RM06F4R99CT

CAL-CHIP ELECTRONICS INC.

RES SMD 4.99 OHM 1% 1/10W 0603

25000
RM10J163CT

RM10J163CT

CAL-CHIP ELECTRONICS INC.

RES SMD 16K OHM 5% 1/8W 0805

115000
RM12F1821CT

RM12F1821CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.82K OHM 1% 1/4W 1206

195000
RM10F11R0CT

RM10F11R0CT

CAL-CHIP ELECTRONICS INC.

RES SMD 11 OHM 1% 1/8W 0805

565000
RN10D1001CT5-V25

RN10D1001CT5-V25

CAL-CHIP ELECTRONICS INC.

RES SMD 1K OHM 0.5% 1/4W 0805

0
RM20F2001CT

RM20F2001CT

CAL-CHIP ELECTRONICS INC.

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

8000
RM20F2003CT

RM20F2003CT

CAL-CHIP ELECTRONICS INC.

RES SMD 200K OHM 1% 1/2W 2010

0
RM12F2R50CT

RM12F2R50CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.5 OHM 1% 1/4W 1206

0
RM10F5112CT

RM10F5112CT

CAL-CHIP ELECTRONICS INC.

RES SMD 51.1K OHM 1% 1/8W 0805

20000
RN04B4872CT10-25

RN04B4872CT10-25

CAL-CHIP ELECTRONICS INC.

RES 48.7K OHM 0.1% 1/16W 0402

10000
RM12F1R10CT

RM12F1R10CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1 OHM 1% 1/4W 1206

5000
RM10F4120CT

RM10F4120CT

CAL-CHIP ELECTRONICS INC.

RES SMD 412 OHM 1% 1/8W 0805

45000
RN06B7502CT5-25

RN06B7502CT5-25

CAL-CHIP ELECTRONICS INC.

RES SMD 75K OHM 0.1% 1/16W 0603

10000
RM10F5113CT

RM10F5113CT

CAL-CHIP ELECTRONICS INC.

RES SMD 511K OHM 1% 1/8W 0805

10000
RM10F2701CT

RM10F2701CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.7K OHM 1% 1/8W 0805

5000
RM12F1204CT

RM12F1204CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.2M OHM 1% 1/4W 1206

5000
RM10J822CT

RM10J822CT

CAL-CHIP ELECTRONICS INC.

RES SMD 8.2K OHM 5% 1/8W 0805

30000
RM10F6491CT

RM10F6491CT

CAL-CHIP ELECTRONICS INC.

RES SMD 6.49K OHM 1% 1/8W 0805

50000

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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