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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
UCR10EVHFSR012

UCR10EVHFSR012

ROHM Semiconductor

RES 0.012 OHM 1% 1/3W 0805

2505
SDR03EZPJ912

SDR03EZPJ912

ROHM Semiconductor

RES SMD 9.1 KOHM 5% 0.3W 0603

4980
ESR10EZPF69R8

ESR10EZPF69R8

ROHM Semiconductor

RES SMD 69.8 OHM 1% 0.4W 0805

0
ESR03EZPJ180

ESR03EZPJ180

ROHM Semiconductor

RES SMD 18 OHM 5% 1/4W 0603

11702
SFR01MZPJ000

SFR01MZPJ000

ROHM Semiconductor

RES 0 OHM JUMPER 1/16W 0402

239711
SDR03EZPJ621

SDR03EZPJ621

ROHM Semiconductor

RES SMD 620 OHM 5% 0.3W 0603

1620
KTR10EZPJ821

KTR10EZPJ821

ROHM Semiconductor

RES SMD 820 OHM 5% 1/8W 0805

0
ESR18EZPF7322

ESR18EZPF7322

ROHM Semiconductor

RES SMD 73.2K OHM 1% 1/2W 1206

0
MCR03EZPFX1472

MCR03EZPFX1472

ROHM Semiconductor

RES SMD 14.7K OHM 1% 1/10W 0603

7
KTR10EZPF1502

KTR10EZPF1502

ROHM Semiconductor

RES SMD 15K OHM 1% 1/8W 0805

18894
SFR01MZPF3901

SFR01MZPF3901

ROHM Semiconductor

RES 3.9K OHM 1% 1/16W 0402

0
KTR10EZPF28R0

KTR10EZPF28R0

ROHM Semiconductor

RES SMD 28 OHM 1% 1/8W 0805

9706
MCR006YRTJ511

MCR006YRTJ511

ROHM Semiconductor

RES SMD 510 OHM 5% 1/20W 0201

740
ESR10EZPF1910

ESR10EZPF1910

ROHM Semiconductor

RES SMD 191 OHM 1% 0.4W 0805

0
MCR25JZHF45R3

MCR25JZHF45R3

ROHM Semiconductor

RES SMD 45.3 OHM 1% 1/4W 1210

7090
KTR10EZPF3571

KTR10EZPF3571

ROHM Semiconductor

RES SMD 3.57K OHM 1% 1/8W 0805

0
KTR03EZPJ1R8

KTR03EZPJ1R8

ROHM Semiconductor

RES SMD 1.8 OHM 5% 1/10W 0603

0
MCR18ERTF75R0

MCR18ERTF75R0

ROHM Semiconductor

RES SMD 75 OHM 1% 1/4W 1206

218
TRR01MZPF1102

TRR01MZPF1102

ROHM Semiconductor

RES SMD 11K OHM 1% 1/16W 0402

11934
MCR18ERTJ134

MCR18ERTJ134

ROHM Semiconductor

RES SMD 130K OHM 5% 1/4W 1206

4574

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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