ample-chip ample-chip
RFQ
BOM

Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RM12J245CT

RM12J245CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2.4M OHM 5% 1/4W 1206

5000
RM10F1540CT

RM10F1540CT

CAL-CHIP ELECTRONICS INC.

RES SMD 154 OHM 1% 1/8W 0805

15000
RM12F33R0CT

RM12F33R0CT

CAL-CHIP ELECTRONICS INC.

RES SMD 33 OHM 1% 1/4W 1206

90000
RM12F39R0CT-H

RM12F39R0CT-H

CAL-CHIP ELECTRONICS INC.

RES SMD 39 OHM 1% 1/4W 1206

0
RM06F3R90CT

RM06F3R90CT

CAL-CHIP ELECTRONICS INC.

RES SMD 3.9 OHM 1% 1/10W 0603

0
RN06B1582CT5-25

RN06B1582CT5-25

CAL-CHIP ELECTRONICS INC.

RES 15.8K OHM 0.1% 1/16W 0603

5000
RM12J364CT

RM12J364CT

CAL-CHIP ELECTRONICS INC.

RES SMD 360K OHM 5% 1/4W 1206

50000
RN10F5902CT5-50

RN10F5902CT5-50

CAL-CHIP ELECTRONICS INC.

RES SMD 59K OHM 1% 1/10W 0805

0
RM10F2001CT

RM10F2001CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2K OHM 1% 1/8W 0805

95000
RM10F1911CT

RM10F1911CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.91K OHM 1% 1/8W 0805

20000
RN04F3482CT10-50

RN04F3482CT10-50

CAL-CHIP ELECTRONICS INC.

RES SMD 34.8K OHM 1% 1/16W 0402

0
RM10F6192CT

RM10F6192CT

CAL-CHIP ELECTRONICS INC.

RES SMD 61.9K OHM 1% 1/8W 0805

20000
RN10D1022CT5-25

RN10D1022CT5-25

CAL-CHIP ELECTRONICS INC.

RES 10.2K OHM 0.5% 1/10W 0805

5000
RM14J244CT

RM14J244CT

CAL-CHIP ELECTRONICS INC.

RES SMD 240K OHM 5% 1/3W 1210

50000
RN04B2003CT10-25

RN04B2003CT10-25

CAL-CHIP ELECTRONICS INC.

RES SMD 200K OHM 0.1% 1/16W 0402

0
RM12F1431CT

RM12F1431CT

CAL-CHIP ELECTRONICS INC.

RES SMD 1.43K OHM 1% 1/4W 1206

45000
RM10F3830CT

RM10F3830CT

CAL-CHIP ELECTRONICS INC.

RES SMD 383 OHM 1% 1/8W 0805

70000
RM25F2001CT

RM25F2001CT

CAL-CHIP ELECTRONICS INC.

RES SMD 2K OHM 1% 1W 2512

36000
RN10D1742CT5-25

RN10D1742CT5-25

CAL-CHIP ELECTRONICS INC.

RES 17.4K OHM 0.5% 1/10W 0805

25000
RM20F2490CT

RM20F2490CT

CAL-CHIP ELECTRONICS INC.

RES SMD 249 OHM 1% 1/2W 2010

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

RFQ BOM Call Skype Email
Top