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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
PFC10-240RF1

PFC10-240RF1

Riedon

RES SMD 240 OHM 1% 25W PFC10

0
PFS35-5K6F1

PFS35-5K6F1

Riedon

RES SMD 5.6KOHM 1% 35W TO263DPAK

0
S4-4K7J8

S4-4K7J8

Riedon

RES SMD 4.7K OHM 5% 2W 4525

0
S2-47RJ1

S2-47RJ1

Riedon

RES SMD 47 OHM 5% 1W 2615

0
S3-0R05J8

S3-0R05J8

Riedon

RES 0.05 OHM 5% 3W 6327

0
S4-76R8F8

S4-76R8F8

Riedon

RES SMD 76.8 OHM 1% 2W 4525

0
CAR0603-47RB1

CAR0603-47RB1

Riedon

RES SMD 47 OHM 0.1% 1/16W 0603

0
S3-0R02J8

S3-0R02J8

Riedon

RES 0.02 OHM 5% 3W 6327

0
S2-0R047F8

S2-0R047F8

Riedon

RES 0.047 OHM 1% 1W 2615

0
PFC10-1R8F1

PFC10-1R8F1

Riedon

RES SMD 1.8 OHM 1% 25W PFC10

0
S3-150RF1

S3-150RF1

Riedon

RES SMD 150 OHM 1% 3W 6327

418
HVS2512-100MJ8

HVS2512-100MJ8

Riedon

RES SMD 100M OHM 5% 1W 2512

0
PFS35-6K8F1

PFS35-6K8F1

Riedon

RES SMD 6.8KOHM 1% 35W TO263DPAK

0
S2-75RF1

S2-75RF1

Riedon

RES SMD 75 OHM 1% 1W 2615

0
PCR1206-470RJ1

PCR1206-470RJ1

Riedon

RES SMD 470 OHM 5% 1/3W 1206

0
PFS35-330RF1

PFS35-330RF1

Riedon

RES SMD 330OHM 1% 35W TO263 DPAK

0
MNRS15750R0002F

MNRS15750R0002F

Riedon

RES SMD 200 UOHM 1% 7W 6030

475
S3-22KJ8

S3-22KJ8

Riedon

RES SMD 22K OHM 5% 3W 6327

0
CSR2512A0R015F

CSR2512A0R015F

Riedon

RES 0.015 OHM 1% 2W 2512

8433
S4-0R02J1

S4-0R02J1

Riedon

RES 0.02 OHM 5% 2W 4525

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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