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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
LTR10EZPF3002

LTR10EZPF3002

ROHM Semiconductor

RES SMD 30K OHM 1/4W 0805 WIDE

7363
SFR01MZPF49R9

SFR01MZPF49R9

ROHM Semiconductor

RES 49.9 OHM 1% 1/16W 0402

7125
KTR10EZPF1743

KTR10EZPF1743

ROHM Semiconductor

RES SMD 174K OHM 1% 1/8W 0805

8195
TRR03EZPF2321

TRR03EZPF2321

ROHM Semiconductor

RES SMD 2.32K OHM 1% 1/10W 0603

0
ESR18EZPF2431

ESR18EZPF2431

ROHM Semiconductor

RES SMD 2.43K OHM 1% 1/2W 1206

0
MCR10ERTF2612

MCR10ERTF2612

ROHM Semiconductor

RES SMD 26.1K OHM 1% 1/8W 0805

419
KTR03EZPF1R50

KTR03EZPF1R50

ROHM Semiconductor

RES SMD 1.5 OHM 1% 1/10W 0603

3779
TRR10EZPF1000

TRR10EZPF1000

ROHM Semiconductor

RES SMD 100 OHM 1% 1/8W 0805

5000
ESR25JZPF8203

ESR25JZPF8203

ROHM Semiconductor

RES SMD 820K OHM 1% 2/3W 1210

0
MCR006YRTJ155

MCR006YRTJ155

ROHM Semiconductor

RES SMD 1.5M OHM 5% 1/20W 0201

424
KTR10EZPJ1R5

KTR10EZPJ1R5

ROHM Semiconductor

RES SMD 1.5 OHM 5% 1/8W 0805

0
MCR01MRTJ392

MCR01MRTJ392

ROHM Semiconductor

RES SMD 3.9K OHM 5% 1/16W 0402

8584
ESR10EZPF2R00

ESR10EZPF2R00

ROHM Semiconductor

RES SMD 2 OHM 1% 0.4W 0805

1944
MCR25JZHF47R5

MCR25JZHF47R5

ROHM Semiconductor

RES SMD 47.5 OHM 1% 1/4W 1210

6
KTR03EZPF2702

KTR03EZPF2702

ROHM Semiconductor

RES SMD 27K OHM 1% 1/10W 0603

12919
KTR25JZPF1R80

KTR25JZPF1R80

ROHM Semiconductor

RES SMD 1.8 OHM 1% 1/3W 1210

0
ESR10EZPF2210

ESR10EZPF2210

ROHM Semiconductor

RES SMD 221 OHM 1% 0.4W 0805

0
KTR18EZPF3922

KTR18EZPF3922

ROHM Semiconductor

RES SMD 39.2K OHM 1% 1/4W 1206

0
MCR006YRTJ470

MCR006YRTJ470

ROHM Semiconductor

RES SMD 47 OHM 5% 1/20W 0201

3390
TRR03EZPF6802

TRR03EZPF6802

ROHM Semiconductor

RES SMD 68K OHM 1% 1/10W 0603

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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