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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
KTR10EZPJ185

KTR10EZPJ185

ROHM Semiconductor

RES SMD 1.8M OHM 5% 1/8W 0805

0
MCR50JZHF57R6

MCR50JZHF57R6

ROHM Semiconductor

RES SMD 57.6 OHM 1% 1/2W 2010

2222
MCR50JZHF2002

MCR50JZHF2002

ROHM Semiconductor

RES SMD 20K OHM 1% 1/2W 2010

31
MCR01MRTF2613

MCR01MRTF2613

ROHM Semiconductor

RES SMD 261K OHM 1% 1/16W 0402

67
ESR10EZPF27R4

ESR10EZPF27R4

ROHM Semiconductor

RES SMD 27.4 OHM 1% 0.4W 0805

0
MCR10ERTFL1R20

MCR10ERTFL1R20

ROHM Semiconductor

RES SMD 1.2 OHM 1% 1/8W 0805

421
SDR03EZPF4992

SDR03EZPF4992

ROHM Semiconductor

RES SMD 49.9 KOHM 1% 0.3W 0603

449
MCR18ERTF5622

MCR18ERTF5622

ROHM Semiconductor

RES SMD 56.2K OHM 1% 1/4W 1206

0
MCR50JZHF1130

MCR50JZHF1130

ROHM Semiconductor

RES SMD 113 OHM 1% 1/2W 2010

5168
MCR18ERTF6980

MCR18ERTF6980

ROHM Semiconductor

RES SMD 698 OHM 1% 1/4W 1206

2301
MCR25JZHF7681

MCR25JZHF7681

ROHM Semiconductor

RES SMD 7.68K OHM 1% 1/4W 1210

577
KTR25JZPF1204

KTR25JZPF1204

ROHM Semiconductor

RES SMD 1.2M OHM 1% 1/3W 1210

748
MCR18ERTJ123

MCR18ERTJ123

ROHM Semiconductor

RES SMD 12K OHM 5% 1/4W 1206

49
TRR01MZPJ334

TRR01MZPJ334

ROHM Semiconductor

RES SMD 330K OHM 5% 1/16W 0402

0
LTR18EZPJ301

LTR18EZPJ301

ROHM Semiconductor

RES SMD 300 OHM 3/4W 1206 WIDE

0
MCR03ERTF4422

MCR03ERTF4422

ROHM Semiconductor

RES SMD 44.2K OHM 1% 1/10W 0603

9
LTR10EVHFL2R20

LTR10EVHFL2R20

ROHM Semiconductor

RES SMD 2.2 OHM 1/2W 0805 WIDE

1872
KTR10EZPF3320

KTR10EZPF3320

ROHM Semiconductor

RES SMD 332 OHM 1% 1/8W 0805

0
KTR10EZPF6800

KTR10EZPF6800

ROHM Semiconductor

RES SMD 680 OHM 1% 1/8W 0805

4935
MCR18ERTJ475

MCR18ERTJ475

ROHM Semiconductor

RES SMD 4.7M OHM 5% 1/4W 1206

405

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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