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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM10F3570CT

RM10F3570CT

CAL-CHIP ELECTRONICS INC.

RES SMD 357 OHM 1% 1/8W 0805

435000
RM10J305CT

RM10J305CT

CAL-CHIP ELECTRONICS INC.

RES SMD 3M OHM 5% 1/8W 0805

50000
RM12F1582CT

RM12F1582CT

CAL-CHIP ELECTRONICS INC.

RES SMD 15.8K OHM 1% 1/4W 1206

25000
RN04F6041CT5-50

RN04F6041CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 6.04K OHM 1% 1/16W 0402

0
RM12F54R9CT

RM12F54R9CT

CAL-CHIP ELECTRONICS INC.

RES SMD 54.9 OHM 1% 1/4W 1206

0
RM12F6814CT

RM12F6814CT

CAL-CHIP ELECTRONICS INC.

RES SMD 6.81M OHM 1% 1/4W 1206

0
RM12J301CT

RM12J301CT

CAL-CHIP ELECTRONICS INC.

RES SMD 300 OHM 5% 1/4W 1206

130000
RN10D10R0CT5-25

RN10D10R0CT5-25

CAL-CHIP ELECTRONICS INC.

RES SMD 10 OHM 0.5% 1/10W 0805

0
RM25F5110CT

RM25F5110CT

CAL-CHIP ELECTRONICS INC.

RES SMD 511 OHM 1% 1W 2512

0
RM25J120CT

RM25J120CT

CAL-CHIP ELECTRONICS INC.

RES SMD 12 OHM 5% 1W 2512

8000
RM10J124CT

RM10J124CT

CAL-CHIP ELECTRONICS INC.

RES SMD 120K OHM 5% 1/8W 0805

190000
RM25J1R2CT

RM25J1R2CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.2 OHM 5% 1W 2512

4000
RN10F3323CT5-50

RN10F3323CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 332K OHM 1% 1/10W 0805

5000
RM10F9311CT

RM10F9311CT

CAL-CHIP ELECTRONICS INC.

RES SMD 9.31K OHM 1% 1/8W 0805

90000
RM10F5102CT

RM10F5102CT

CAL-CHIP ELECTRONICS INC.

RES SMD 51K OHM 1% 1/8W 0805

10000
RM12F3481CT

RM12F3481CT

CAL-CHIP ELECTRONICS INC.

RES SMD 3.48K OHM 1% 1/4W 1206

180000
RM25J7R5CT

RM25J7R5CT

CAL-CHIP ELECTRONICS INC.

RES SMD 7.5 OHM 5% 1W 2512

0
RN10F2000CT5-50

RN10F2000CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 200 OHM 1% 1/10W 0805

5000
RM25J334CT

RM25J334CT

CAL-CHIP ELECTRONICS INC.

RES SMD 330K OHM 5% 1W 2512

0
RM12F11R0CT

RM12F11R0CT

CAL-CHIP ELECTRONICS INC.

RES SMD 11 OHM 1% 1/4W 1206

10000

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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