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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM12F1153CT

RM12F1153CT

CAL-CHIP ELECTRONICS INC.

RES SMD 115K OHM 1% 1/4W 1206

0
RM12F1823CT

RM12F1823CT

CAL-CHIP ELECTRONICS INC.

RES SMD 182K OHM 1% 1/4W 1206

65000
RM12F2430CT

RM12F2430CT

CAL-CHIP ELECTRONICS INC.

RES SMD 243 OHM 1% 1/4W 1206

0
RM14F11R5CT

RM14F11R5CT

CAL-CHIP ELECTRONICS INC.

RES SMD 11.5 OHM 1% 1/3W 1210

25000
RM14J274CT

RM14J274CT

CAL-CHIP ELECTRONICS INC.

RES SMD 270K OHM 5% 1/3W 1210

20000
RN06B5602CT5-25

RN06B5602CT5-25

CAL-CHIP ELECTRONICS INC.

RES SMD 56K OHM 0.1% 1/16W 0603

0
RM25J393CT

RM25J393CT

CAL-CHIP ELECTRONICS INC.

RES SMD 39K OHM 5% 1W 2512

4000
RM14J202CT

RM14J202CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2K OHM 5% 1/3W 1210

10000
RM14F9091CT

RM14F9091CT

CAL-CHIP ELECTRONICS INC.

RES SMD 9.09K OHM 1% 1/3W 1210

10000
RM14J114CT

RM14J114CT

CAL-CHIP ELECTRONICS INC.

RES SMD 110K OHM 5% 1/3W 1210

0
RM14F75R0CT

RM14F75R0CT

CAL-CHIP ELECTRONICS INC.

RES SMD 75 OHM 1% 1/3W 1210

20000
RN12F5900CT5-25

RN12F5900CT5-25

CAL-CHIP ELECTRONICS INC.

RES SMD 590 OHM 1% 1/8W 1206

5000
RN04A1650CT10-10

RN04A1650CT10-10

CAL-CHIP ELECTRONICS INC.

RES SMD 165 OHM 0.05% 1/16W 0402

0
RM10F2R87CT

RM10F2R87CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.87 OHM 1% 1/8W 0805

0
RM25F1240CT

RM25F1240CT

CAL-CHIP ELECTRONICS INC.

RES SMD 124 OHM 1% 1W 2512

12000
RN10B1822CT5-25

RN10B1822CT5-25

CAL-CHIP ELECTRONICS INC.

RES 18.2K OHM 0.1% 1/10W 0805

0
RM12F1783CT

RM12F1783CT

CAL-CHIP ELECTRONICS INC.

RES SMD 178K OHM 1% 1/4W 1206

10000
RM12J125CT

RM12J125CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.2M OHM 5% 1/4W 1206

10000
RM14J470CT

RM14J470CT

CAL-CHIP ELECTRONICS INC.

RES SMD 47 OHM 5% 1/3W 1210

90000
RN04D2051CT10-25

RN04D2051CT10-25

CAL-CHIP ELECTRONICS INC.

RES 2.05K OHM 0.5% 1/16W 0402

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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