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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
SG73S1JTTD8R66F

SG73S1JTTD8R66F

KOA Speer Electronics, Inc.

RES 8.66 OHM 1% 1/5W 0603

0
RN73H2ETTD3523C50

RN73H2ETTD3523C50

KOA Speer Electronics, Inc.

RES 352K OHM 0.25% 1/4W 1210

0
RK73H3ATTE1331D

RK73H3ATTE1331D

KOA Speer Electronics, Inc.

RES 1.33K OHM 0.5% 1W 2512

0
RN73H2ATTD2341C50

RN73H2ATTD2341C50

KOA Speer Electronics, Inc.

RES 2.34K OHM 0.25% 1/8W 0805

0
RK73G1ETTP6980C

RK73G1ETTP6980C

KOA Speer Electronics, Inc.

RES 698 OHM 0.25% 1/10W 0402

0
RN73R1JTTD7682B25

RN73R1JTTD7682B25

KOA Speer Electronics, Inc.

RES 76.8K OHM 0.1% 1/10W 0603

0
RS73G2ATTD12R0D

RS73G2ATTD12R0D

KOA Speer Electronics, Inc.

RES 12 OHM 0.5% 1/4W 0805

0
SG73S2ETTD14R0F

SG73S2ETTD14R0F

KOA Speer Electronics, Inc.

RES 14 OHM 1% 1/2W 1210

0
RN73R1JTTD1640C10

RN73R1JTTD1640C10

KOA Speer Electronics, Inc.

RES 164 OHM 0.25% 1/10W 0603

0
SG73S1ETTP11R5F

SG73S1ETTP11R5F

KOA Speer Electronics, Inc.

RES 11.5 OHM 1% 1/8W 0402

0
RN73H1JTTD1002B25

RN73H1JTTD1002B25

KOA Speer Electronics, Inc.

RES 10K OHM 0.1% 1/10W 0603

8828
RN73R1JTTD22R0F50

RN73R1JTTD22R0F50

KOA Speer Electronics, Inc.

RES 22 OHM 1% 1/10W 0603

0
SG732HTTE103M

SG732HTTE103M

KOA Speer Electronics, Inc.

RES 10K OHM 20% 3/4W 2010

0
RN731JTTD2150F100

RN731JTTD2150F100

KOA Speer Electronics, Inc.

RES 215 OHM 1% 1/16W 0603

0
RN73R2BTTD7870A10

RN73R2BTTD7870A10

KOA Speer Electronics, Inc.

RES 787 OHM 0.05% 1/4W 1206

0
RN73R1JTTD1302F25

RN73R1JTTD1302F25

KOA Speer Electronics, Inc.

RES 13K OHM 1% 1/10W 0603

0
RN73R1ETTP1353C50

RN73R1ETTP1353C50

KOA Speer Electronics, Inc.

RES 135K OHM 0.25% 1/16W 0402

0
RN73R2ATTD1403D100

RN73R2ATTD1403D100

KOA Speer Electronics, Inc.

RES 140K OHM 0.5% 1/8W 0805

0
RN73H1ETTP1892C50

RN73H1ETTP1892C50

KOA Speer Electronics, Inc.

RES 18.9K OHM 0.25% 1/16W 0402

0
RN73R2ETTD6732B50

RN73R2ETTD6732B50

KOA Speer Electronics, Inc.

RESISTOR THIN FILM 1210 SIZE 1%

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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