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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RN73H2BTTD3920B10

RN73H2BTTD3920B10

KOA Speer Electronics, Inc.

RES 392 OHM 0.1% 1/4W 1206

0
RN73R1ETTP1291C25

RN73R1ETTP1291C25

KOA Speer Electronics, Inc.

RES 1.29K OHM 0.25% 1/16W 0402

0
RN73H1ETTP1840D50

RN73H1ETTP1840D50

KOA Speer Electronics, Inc.

RES 184 OHM 0.5% 1/16W 0402

0
RN73H1ETTP1932F50

RN73H1ETTP1932F50

KOA Speer Electronics, Inc.

RES 19.3K OHM 1% 1/16W 0402

0
RN73H2ATTD5691A05

RN73H2ATTD5691A05

KOA Speer Electronics, Inc.

RES 5.69K OHM 0.05% 1/8W 0805

0
RS73G2ATTD68R0D

RS73G2ATTD68R0D

KOA Speer Electronics, Inc.

RES 68 OHM 0.5% 1/4W 0805

0
RN73H1ETTP2583D50

RN73H1ETTP2583D50

KOA Speer Electronics, Inc.

RES 258K OHM 0.5% 1/16W 0402

0
RK73G2ATTD1272D

RK73G2ATTD1272D

KOA Speer Electronics, Inc.

THICKFILM RESISTOR 0805

0
RK73H2ATTD1621F

RK73H2ATTD1621F

KOA Speer Electronics, Inc.

RES 1.62K OHM 1% 1/4W 0805

7160
SG73P2ETTD10R2F

SG73P2ETTD10R2F

KOA Speer Electronics, Inc.

RES 10.2 OHM 1% 1/2W 1210

0
RN73H2ATTD1231B05

RN73H2ATTD1231B05

KOA Speer Electronics, Inc.

RES 1.23K OHM 0.1% 1/8W 0805

0
RN73R2ATTD5900D10

RN73R2ATTD5900D10

KOA Speer Electronics, Inc.

RES 590 OHM 0.5% 1/8W 0805

0
RN73R1JTTD5360A10

RN73R1JTTD5360A10

KOA Speer Electronics, Inc.

RES 536 OHM 0.05% 1/10W 0603

0
RN73R1ETTP2740D50

RN73R1ETTP2740D50

KOA Speer Electronics, Inc.

RES 274 OHM 0.5% 1/16W 0402

0
RN73H2BTTD2581C50

RN73H2BTTD2581C50

KOA Speer Electronics, Inc.

RES 2.58K OHM 0.25% 1/4W 1206

0
SR73W2HTTE6R65F

SR73W2HTTE6R65F

KOA Speer Electronics, Inc.

CURRENT SENSE RESISTOR

0
RN731JTTD2913F25

RN731JTTD2913F25

KOA Speer Electronics, Inc.

RES 291K OHM 1% 1/16W 0603

0
RN73R2ATTD6651D10

RN73R2ATTD6651D10

KOA Speer Electronics, Inc.

RES 6.65K OHM 0.5% 1/8W 0805

0
SG732ATTD1R2M

SG732ATTD1R2M

KOA Speer Electronics, Inc.

RES 1.2 OHM 20% 1/8W 0805

0
RN73H2BTTD8352A25

RN73H2BTTD8352A25

KOA Speer Electronics, Inc.

RES 83.5K OHM 0.05% 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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