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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM12F6983CT

RM12F6983CT

CAL-CHIP ELECTRONICS INC.

RES SMD 698K OHM 1% 1/4W 1206

45000
RM12F39R2CT

RM12F39R2CT

CAL-CHIP ELECTRONICS INC.

RES SMD 39.2 OHM 1% 1/4W 1206

30000
RM20J270CT

RM20J270CT

CAL-CHIP ELECTRONICS INC.

RES SMD 27 OHM 5% 1/2W 2010

0
RM14J180CT

RM14J180CT

CAL-CHIP ELECTRONICS INC.

RES SMD 18 OHM 5% 1/3W 1210

35000
RM12F2260CT

RM12F2260CT

CAL-CHIP ELECTRONICS INC.

RES SMD 226 OHM 1% 1/4W 1206

10000
RM20J682CT

RM20J682CT

CAL-CHIP ELECTRONICS INC.

RES SMD 6.8K OHM 5% 1/2W 2010

16000
RM12F1690CT

RM12F1690CT

CAL-CHIP ELECTRONICS INC.

RES SMD 169 OHM 1% 1/4W 1206

0
RM10J102CT

RM10J102CT

CAL-CHIP ELECTRONICS INC.

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

905000
RM10F1002CTG

RM10F1002CTG

CAL-CHIP ELECTRONICS INC.

RES SMD 10K OHM 1% 1/8W 0805

0
RM10J203CT

RM10J203CT

CAL-CHIP ELECTRONICS INC.

RES SMD 20K OHM 5% 1/8W 0805

215000
RM14F1501CT

RM14F1501CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.5K OHM 1% 1/3W 1210

0
RM20F4752CT

RM20F4752CT

CAL-CHIP ELECTRONICS INC.

RES SMD 47.5K OHM 1% 1/2W 2010

16000
RM10F4R64CT

RM10F4R64CT

CAL-CHIP ELECTRONICS INC.

RES SMD 4.64 OHM 1% 1/8W 0805

5000
RM10J275CT

RM10J275CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.7M OHM 5% 1/8W 0805

30000
RM10F2401CT

RM10F2401CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.4K OHM 1% 1/8W 0805

0
RM10F1470CT

RM10F1470CT

CAL-CHIP ELECTRONICS INC.

RES SMD 147 OHM 1% 1/8W 0805

35000
RM14F3323CT

RM14F3323CT

CAL-CHIP ELECTRONICS INC.

RES SMD 332K OHM 1% 1/3W 1210

5000
RM12F4301CT

RM12F4301CT

CAL-CHIP ELECTRONICS INC.

RES SMD 4.3K OHM 1% 1/4W 1206

5000
RM14J510CT

RM14J510CT

CAL-CHIP ELECTRONICS INC.

RES SMD 51 OHM 5% 1/3W 1210

30000
RM12F1071CT

RM12F1071CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.07K OHM 1% 1/4W 1206

0

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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