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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
KTR18EZPF3R90

KTR18EZPF3R90

ROHM Semiconductor

RES SMD 3.9 OHM 1% 1/4W 1206

0
KTR18EZPF9091

KTR18EZPF9091

ROHM Semiconductor

RES SMD 9.09K OHM 1% 1/4W 1206

0
TRR01MZPF3300

TRR01MZPF3300

ROHM Semiconductor

RES SMD 330 OHM 1% 1/16W 0402

8391
SDR03EZPF1204

SDR03EZPF1204

ROHM Semiconductor

RES SMD 1.2 MOHM 1% 0.3W 0603

9160
ESR03EZPF2704

ESR03EZPF2704

ROHM Semiconductor

RES SMD 2.7M OHM 1% 1/4W 0603

0
KTR10EZPF52R3

KTR10EZPF52R3

ROHM Semiconductor

RES SMD 52.3 OHM 1% 1/8W 0805

0
KTR18EZPF1742

KTR18EZPF1742

ROHM Semiconductor

RES SMD 17.4K OHM 1% 1/4W 1206

0
MCR03ERTJ111

MCR03ERTJ111

ROHM Semiconductor

RES SMD 110 OHM 5% 1/10W 0603

34
TRR03EZPJ8R2

TRR03EZPJ8R2

ROHM Semiconductor

RES SMD 8.2 OHM 5% 1/10W 0603

0
ESR25JZPF16R0

ESR25JZPF16R0

ROHM Semiconductor

RES SMD 16 OHM 1% 2/3W 1210

0
KTR18EZPF3323

KTR18EZPF3323

ROHM Semiconductor

RES SMD 332K OHM 1% 1/4W 1206

0
TRR01MZPF1301

TRR01MZPF1301

ROHM Semiconductor

RES SMD 1.3K OHM 1% 1/16W 0402

28381
TRR03EZPJ1R2

TRR03EZPJ1R2

ROHM Semiconductor

RES SMD 1.2 OHM 5% 1/10W 0603

0
KTR10EZPF4423

KTR10EZPF4423

ROHM Semiconductor

RES SMD 442K OHM 1% 1/8W 0805

8649
ESR10EZPF3003

ESR10EZPF3003

ROHM Semiconductor

RES SMD 300K OHM 1% 0.4W 0805

0
TRR03EZPF2371

TRR03EZPF2371

ROHM Semiconductor

RES SMD 2.37K OHM 1% 1/10W 0603

9935
MCR18ERTF12R4

MCR18ERTF12R4

ROHM Semiconductor

RES SMD 12.4 OHM 1% 1/4W 1206

1086
MCR03ERTJ685

MCR03ERTJ685

ROHM Semiconductor

RES SMD 6.8M OHM 5% 1/10W 0603

665
LTR10EVHFLR390

LTR10EVHFLR390

ROHM Semiconductor

RES 0.39 OHM 1/2W 0805 WIDE

0
KTR18EZPF1502

KTR18EZPF1502

ROHM Semiconductor

RES SMD 15K OHM 1% 1/4W 1206

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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