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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
ESR03EZPJ2R0

ESR03EZPJ2R0

ROHM Semiconductor

RES SMD 2 OHM 5% 1/4W 0603

10397
ESR10EZPF1820

ESR10EZPF1820

ROHM Semiconductor

RES SMD 182 OHM 1% 0.4W 0805

0
KTR10EZPJ623

KTR10EZPJ623

ROHM Semiconductor

RES SMD 62K OHM 5% 1/8W 0805

0
KTR10EZPF3002

KTR10EZPF3002

ROHM Semiconductor

RES SMD 30K OHM 1% 1/8W 0805

3548
SDR03EZPJ5R1

SDR03EZPJ5R1

ROHM Semiconductor

RES SMD 5.1 OHM 5% 0.3W 0603

2938
KTR25JZPJ432

KTR25JZPJ432

ROHM Semiconductor

RES SMD 4.3K OHM 5% 1/3W 1210

0
TRR18EZPF4991

TRR18EZPF4991

ROHM Semiconductor

RES SMD 4.99K OHM 1% 1/4W 1206

14762
ESR18EZPF1R50

ESR18EZPF1R50

ROHM Semiconductor

RES SMD 1.5 OHM 1% 1/2W 1206

0
ESR25JZPJ104

ESR25JZPJ104

ROHM Semiconductor

RES SMD 100K OHM 5% 2/3W 1210

1533
KTR18EZPF4702

KTR18EZPF4702

ROHM Semiconductor

RES SMD 47K OHM 1% 1/4W 1206

6992
MCR006YRTF6803

MCR006YRTF6803

ROHM Semiconductor

RES SMD 680K OHM 1% 1/20W 0201

7681
LTR10EZPJ5R1

LTR10EZPJ5R1

ROHM Semiconductor

RES SMD 5.1 OHM 1/4W 0805 WIDE

0
MCR10ERTF42R2

MCR10ERTF42R2

ROHM Semiconductor

RES SMD 42.2 OHM 1% 1/8W 0805

9222
MCR25JZHJ1R2

MCR25JZHJ1R2

ROHM Semiconductor

RES SMD 1.2 OHM 5% 1/4W 1210

2332
UCR10EVHJSR013

UCR10EVHJSR013

ROHM Semiconductor

RES 0.013 OHM 5% 1/3W 0805

6532
LTR18EZPJ333

LTR18EZPJ333

ROHM Semiconductor

RES SMD 33K OHM 3/4W 1206 WIDE

0
MCR03ERTF1963

MCR03ERTF1963

ROHM Semiconductor

RES SMD 196K OHM 1% 1/10W 0603

1626
TRR01MZPJ335

TRR01MZPJ335

ROHM Semiconductor

RES SMD 3.3M OHM 5% 1/16W 0402

0
ESR18EZPJ364

ESR18EZPJ364

ROHM Semiconductor

RES SMD 360K OHM 5% 1/2W 1206

0
ESR18EZPF4120

ESR18EZPF4120

ROHM Semiconductor

RES SMD 412 OHM 1% 1/2W 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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