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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM12F5603CT

RM12F5603CT

CAL-CHIP ELECTRONICS INC.

RES SMD 560K OHM 1% 1/4W 1206

0
RM10J240CT

RM10J240CT

CAL-CHIP ELECTRONICS INC.

RES SMD 24 OHM 5% 1/8W 0805

465000
RM10J333CT

RM10J333CT

CAL-CHIP ELECTRONICS INC.

RES SMD 33K OHM 5% 1/8W 0805

420000
RM12F23R7CT

RM12F23R7CT

CAL-CHIP ELECTRONICS INC.

RES SMD 23.7 OHM 1% 1/4W 1206

0
RM12F4642CT

RM12F4642CT

CAL-CHIP ELECTRONICS INC.

RES SMD 46.4K OHM 1% 1/4W 1206

0
RM12F86R6CT

RM12F86R6CT

CAL-CHIP ELECTRONICS INC.

RES SMD 86.6 OHM 1% 1/4W 1206

15000
RN06B12R1CT5-25

RN06B12R1CT5-25

CAL-CHIP ELECTRONICS INC.

RES SMD 12.1 OHM 0.1% 1/16W 0603

5000
RM12F33R2CT

RM12F33R2CT

CAL-CHIP ELECTRONICS INC.

RES SMD 33.2 OHM 1% 1/4W 1206

50000
RM10F1R00CT

RM10F1R00CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1 OHM 1% 1/8W 0805

110000
RM12F1202CT

RM12F1202CT

CAL-CHIP ELECTRONICS INC.

RES SMD 12K OHM 1% 1/4W 1206

0
RM10F60R4CT

RM10F60R4CT

CAL-CHIP ELECTRONICS INC.

RES SMD 60.4 OHM 1% 1/8W 0805

150000
RM10F6652CT

RM10F6652CT

CAL-CHIP ELECTRONICS INC.

RES SMD 66.5K OHM 1% 1/8W 0805

35000
RN10F9532CT5-50

RN10F9532CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 95.3K OHM 1% 1/10W 0805

0
RM10F5603CT

RM10F5603CT

CAL-CHIP ELECTRONICS INC.

RES SMD 560K OHM 1% 1/8W 0805

40000
RM06F2R21CT

RM06F2R21CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.21 OHM 1% 1/10W 0603

5000
RM12F4422CT

RM12F4422CT

CAL-CHIP ELECTRONICS INC.

RES SMD 44.2K OHM 1% 1/4W 1206

25000
RM10F3571CT

RM10F3571CT

CAL-CHIP ELECTRONICS INC.

RES SMD 3.57K OHM 1% 1/8W 0805

20000
RM10F4640CT

RM10F4640CT

CAL-CHIP ELECTRONICS INC.

RES SMD 464 OHM 1% 1/8W 0805

75000
RM12F11R5CT

RM12F11R5CT

CAL-CHIP ELECTRONICS INC.

RES SMD 11.5 OHM 1% 1/4W 1206

20000
RM10F5230CT

RM10F5230CT

CAL-CHIP ELECTRONICS INC.

RES SMD 523 OHM 1% 1/8W 0805

20000

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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