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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
RMCF0805FT30R0

RMCF0805FT30R0

Stackpole Electronics, Inc.

RES 30 OHM 1% 1/8W 0805

234825000
RMCF0805FT1K78

RMCF0805FT1K78

Stackpole Electronics, Inc.

RES 1.78K OHM 1% 1/8W 0805

8560
MLF12FTC1K21

MLF12FTC1K21

Stackpole Electronics, Inc.

RES 1.21K OHM 1% 1/2W MELF 0207

0
RNCF1206DTE357R

RNCF1206DTE357R

Stackpole Electronics, Inc.

RES 357 OHM 0.5% 1/3W 1206

0
RNCF0805BTC750R

RNCF0805BTC750R

Stackpole Electronics, Inc.

RES 750 OHM 0.1% 1/8W 0805

0
RMCF0805FT1M10

RMCF0805FT1M10

Stackpole Electronics, Inc.

RES 1.1M OHM 1% 1/8W 0805

210000
HMC1206JT82M0

HMC1206JT82M0

Stackpole Electronics, Inc.

RES 82M OHM 5% 1/4W 1206

0
RNCS1206BTE60K4

RNCS1206BTE60K4

Stackpole Electronics, Inc.

RES 60.4K OHM 0.1% 1/8W 1206

0
SM6227FT7R15

SM6227FT7R15

Stackpole Electronics, Inc.

RES 7.15 OHM 1% 3W 6227

0
RNCF0201DTC2K32

RNCF0201DTC2K32

Stackpole Electronics, Inc.

RES 2.32K OHM 0.5% 1/32W 0201

0
RNCF1206DKE2M26

RNCF1206DKE2M26

Stackpole Electronics, Inc.

RES 2.26M OHM 0.5% 1/8W 1206

0
RNCF1206DTE232K

RNCF1206DTE232K

Stackpole Electronics, Inc.

RES 232K OHM 0.5% 1/3W 1206

0
RNCF0805BTC80R6

RNCF0805BTC80R6

Stackpole Electronics, Inc.

RES 80.6 OHM 0.1% 1/8W 0805

0
RMCF2512FT26K7

RMCF2512FT26K7

Stackpole Electronics, Inc.

RES 26.7K OHM 1% 1W 2512

0
RPC0805JT75R0

RPC0805JT75R0

Stackpole Electronics, Inc.

RES 75 OHM 5% 1/4W 0805

0
RMCF0603FT18K0

RMCF0603FT18K0

Stackpole Electronics, Inc.

RES 18K OHM 1% 1/10W 0603

155683
RNCF0402DTC68R0

RNCF0402DTC68R0

Stackpole Electronics, Inc.

RES 68 OHM 0.5% 1/16W 0402

0
RMCF0402FT143R

RMCF0402FT143R

Stackpole Electronics, Inc.

RES 143 OHM 1% 1/16W 0402

0
RNCF0402BTE64K9

RNCF0402BTE64K9

Stackpole Electronics, Inc.

RES 64.9K OHM 0.1% 1/16W 0402

0
RMCF0805FT6K81

RMCF0805FT6K81

Stackpole Electronics, Inc.

RES 6.81K OHM 1% 1/8W 0805

147042

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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