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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM25F1003CT

RM25F1003CT

CAL-CHIP ELECTRONICS INC.

RES SMD 100K OHM 1% 1W 2512

0
RN06B3093CT5-25

RN06B3093CT5-25

CAL-CHIP ELECTRONICS INC.

RES SMD 309K OHM 0.1% 1/16W 0603

10000
RM12F1000CT

RM12F1000CT

CAL-CHIP ELECTRONICS INC.

RES SMD 100 OHM 1% 1/4W 1206

0
RN04D4322CT10-25

RN04D4322CT10-25

CAL-CHIP ELECTRONICS INC.

RES 43.2K OHM 0.5% 1/16W 0402

10000
RM12F4641CT

RM12F4641CT

CAL-CHIP ELECTRONICS INC.

RES SMD 4.64K OHM 1% 1/4W 1206

10000
RM04F8R66CT

RM04F8R66CT

CAL-CHIP ELECTRONICS INC.

RES SMD 8.66 OHM 1% 1/16W 0402

0
RN12B4990CT1-5

RN12B4990CT1-5

CAL-CHIP ELECTRONICS INC.

RES SMD 499 OHM 0.1% 1/8W 1206

0
RM10J112CT

RM10J112CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.1K OHM 5% 1/8W 0805

145000
RM20F3321CT

RM20F3321CT

CAL-CHIP ELECTRONICS INC.

RES SMD 3.32K OHM 1% 1/2W 2010

4000
RM12F2610CT

RM12F2610CT

CAL-CHIP ELECTRONICS INC.

RES SMD 261 OHM 1% 1/4W 1206

5000
RM10J125CT

RM10J125CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.2M OHM 5% 1/8W 0805

275000
RN12F5622CT1-50

RN12F5622CT1-50

CAL-CHIP ELECTRONICS INC.

RES SMD 56.2K OHM 1% 1/8W 1206

0
RM10F1781CT

RM10F1781CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.78K OHM 1% 1/8W 0805

25000
RN04B3922CT10-25

RN04B3922CT10-25

CAL-CHIP ELECTRONICS INC.

RES 39.2K OHM 0.1% 1/16W 0402

0
RM10F6042CT

RM10F6042CT

CAL-CHIP ELECTRONICS INC.

RES SMD 60.4K OHM 1% 1/8W 0805

30000
RM12F1333CT

RM12F1333CT

CAL-CHIP ELECTRONICS INC.

RES SMD 133K OHM 1% 1/4W 1206

0
RM20J240CT

RM20J240CT

CAL-CHIP ELECTRONICS INC.

RES SMD 24 OHM 5% 1/2W 2010

0
RM10J393CT

RM10J393CT

CAL-CHIP ELECTRONICS INC.

RES SMD 39K OHM 5% 1/8W 0805

80000
RM12J362CT

RM12J362CT

CAL-CHIP ELECTRONICS INC.

RES SMD 3.6K OHM 5% 1/4W 1206

40000
RM10F2323CT

RM10F2323CT

CAL-CHIP ELECTRONICS INC.

RES SMD 232K OHM 1% 1/8W 0805

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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