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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
TRR03EZPF3321

TRR03EZPF3321

ROHM Semiconductor

RES SMD 3.32K OHM 1% 1/10W 0603

5000
ESR10EZPF3482

ESR10EZPF3482

ROHM Semiconductor

RES SMD 34.8K OHM 1% 0.4W 0805

0
MCR10ERTF3403

MCR10ERTF3403

ROHM Semiconductor

RES SMD 340K OHM 1% 1/8W 0805

3584
KTR03EZPF1303

KTR03EZPF1303

ROHM Semiconductor

RES SMD 130K OHM 1% 1/10W 0603

9068
KTR25JZPF1R30

KTR25JZPF1R30

ROHM Semiconductor

RES SMD 1.3 OHM 1% 1/3W 1210

2548
MCR01MRTF6202

MCR01MRTF6202

ROHM Semiconductor

RES SMD 62K OHM 1% 1/16W 0402

326
ESR18EZPJ620

ESR18EZPJ620

ROHM Semiconductor

RES SMD 62 OHM 5% 1/2W 1206

0
LTR10EZPJ332

LTR10EZPJ332

ROHM Semiconductor

RES SMD 3.3K OHM 1/4W 0805 WIDE

3813
MCR10ERTF1104

MCR10ERTF1104

ROHM Semiconductor

RES SMD 1.1M OHM 1% 1/8W 0805

2125
MCR03ERTJ514

MCR03ERTJ514

ROHM Semiconductor

RES SMD 510K OHM 5% 1/10W 0603

725
MCR03ERTJ125

MCR03ERTJ125

ROHM Semiconductor

RES SMD 1.2M OHM 5% 1/10W 0603

2050
KTR10EZPF5903

KTR10EZPF5903

ROHM Semiconductor

RES SMD 590K OHM 1% 1/8W 0805

2203
KTR18EZPF8203

KTR18EZPF8203

ROHM Semiconductor

RES SMD 820K OHM 1% 1/4W 1206

42
ESR25JZPJ912

ESR25JZPJ912

ROHM Semiconductor

RES SMD 9.1K OHM 5% 2/3W 1210

0
ESR10EZPF3161

ESR10EZPF3161

ROHM Semiconductor

RES SMD 3.16K OHM 1% 0.4W 0805

0
KTR03EZPJ475

KTR03EZPJ475

ROHM Semiconductor

RES SMD 4.7M OHM 5% 1/10W 0603

86
MCR006YRTF56R0

MCR006YRTF56R0

ROHM Semiconductor

RES SMD 56 OHM 1% 1/20W 0201

6122
MCR25JZHF18R2

MCR25JZHF18R2

ROHM Semiconductor

RES SMD 18.2 OHM 1% 1/4W 1210

3726
KTR25JZPJ101

KTR25JZPJ101

ROHM Semiconductor

RES SMD 100 OHM 5% 1/3W 1210

0
KTR03EZPJ101

KTR03EZPJ101

ROHM Semiconductor

RES SMD 100 OHM 5% 1/10W 0603

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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