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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
ESR03EZPJ1R6

ESR03EZPJ1R6

ROHM Semiconductor

RES SMD 1.6 OHM 5% 1/4W 0603

1431
MCR01MRTF7683

MCR01MRTF7683

ROHM Semiconductor

RES SMD 768K OHM 1% 1/16W 0402

1787
KTR18EZPF5903

KTR18EZPF5903

ROHM Semiconductor

RES SMD 590K OHM 1% 1/4W 1206

1649
KTR03EZPF6202

KTR03EZPF6202

ROHM Semiconductor

RES SMD 62K OHM 1% 1/10W 0603

0
MCR25JZHJ1R8

MCR25JZHJ1R8

ROHM Semiconductor

RES SMD 1.8 OHM 5% 1/4W 1210

651
KTR25JZPJ1R3

KTR25JZPJ1R3

ROHM Semiconductor

RES SMD 1.3 OHM 5% 1/3W 1210

0
KTR18EZPJ2R7

KTR18EZPJ2R7

ROHM Semiconductor

RES SMD 2.7 OHM 5% 1/4W 1206

0
ESR03EZPF5100

ESR03EZPF5100

ROHM Semiconductor

RES SMD 510 OHM 1% 1/4W 0603

0
MCR10ERTF9311

MCR10ERTF9311

ROHM Semiconductor

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

1
ESR10EZPF2613

ESR10EZPF2613

ROHM Semiconductor

RES SMD 261K OHM 1% 0.4W 0805

0
MCR10ERTF23R7

MCR10ERTF23R7

ROHM Semiconductor

RES SMD 23.7 OHM 1% 1/8W 0805

4605
ESR10EZPF4643

ESR10EZPF4643

ROHM Semiconductor

RES SMD 464K OHM 1% 0.4W 0805

0
ESR18EZPF4303

ESR18EZPF4303

ROHM Semiconductor

RES SMD 430K OHM 1% 1/2W 1206

0
KTR10EZPF7502

KTR10EZPF7502

ROHM Semiconductor

RES SMD 75K OHM 1% 1/8W 0805

4810
ESR03EZPF1002

ESR03EZPF1002

ROHM Semiconductor

RES SMD 10K OHM 1% 1/4W 0603

47488
ESR10EZPJ7R5

ESR10EZPJ7R5

ROHM Semiconductor

RES SMD 7.5 OHM 5% 0.4W 0805

2230
KTR10EZPF4323

KTR10EZPF4323

ROHM Semiconductor

RES SMD 432K OHM 1% 1/8W 0805

0
ESR18EZPF2740

ESR18EZPF2740

ROHM Semiconductor

RES SMD 274 OHM 1% 1/2W 1206

0
KTR25JZPF30R0

KTR25JZPF30R0

ROHM Semiconductor

RES SMD 30 OHM 1% 1/3W 1210

2421
MCR03ERTJ394

MCR03ERTJ394

ROHM Semiconductor

RES SMD 390K OHM 5% 1/10W 0603

2952

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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