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Chip Resistors-Surface Mount

Image Part Number Description / PDF Quantity Rfq
KTR10EZPF2553

KTR10EZPF2553

ROHM Semiconductor

RES SMD 255K OHM 1% 1/8W 0805

4830
ESR10EZPF3302

ESR10EZPF3302

ROHM Semiconductor

RES SMD 33K OHM 1% 0.4W 0805

0
MCR25JZHF11R0

MCR25JZHF11R0

ROHM Semiconductor

RES SMD 11 OHM 1% 1/4W 1210

306
MCR18ERTF1783

MCR18ERTF1783

ROHM Semiconductor

RES SMD 178K OHM 1% 1/4W 1206

9011
MCR100JZHJ910

MCR100JZHJ910

ROHM Semiconductor

RES SMD 91 OHM 5% 1W 2512

0
ESR10EZPF4222

ESR10EZPF4222

ROHM Semiconductor

RES SMD 42.2K OHM 1% 0.4W 0805

0
KTR10EZPF2612

KTR10EZPF2612

ROHM Semiconductor

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

4053
KTR18EZPF20R5

KTR18EZPF20R5

ROHM Semiconductor

RES SMD 20.5 OHM 1% 1/4W 1206

0
KTR10EZPF9093

KTR10EZPF9093

ROHM Semiconductor

RES SMD 909K OHM 1% 1/8W 0805

7770
MCR10ERTF5113

MCR10ERTF5113

ROHM Semiconductor

RES SMD 511K OHM 1% 1/8W 0805

1726
MCR18ERTFL5R11

MCR18ERTFL5R11

ROHM Semiconductor

RES SMD 5.11 OHM 1% 1/4W 1206

4755
MCR10ERTJ150

MCR10ERTJ150

ROHM Semiconductor

RES SMD 15 OHM 5% 1/8W 0805

1550
KTR25JZPJ395

KTR25JZPJ395

ROHM Semiconductor

RES SMD 3.9M OHM 5% 1/3W 1210

0
ESR10EZPF7680

ESR10EZPF7680

ROHM Semiconductor

RES SMD 768 OHM 1% 0.4W 0805

0
KTR18EZPF8253

KTR18EZPF8253

ROHM Semiconductor

RES SMD 825K OHM 1% 1/4W 1206

65
ESR25JZPJ223

ESR25JZPJ223

ROHM Semiconductor

RES SMD 22K OHM 5% 2/3W 1210

1694
KTR10EZPJ183

KTR10EZPJ183

ROHM Semiconductor

RES SMD 18K OHM 5% 1/8W 0805

0
MCR25JZHF8060

MCR25JZHF8060

ROHM Semiconductor

RES SMD 806 OHM 1% 1/4W 1210

3417
ESR10EZPJ393

ESR10EZPJ393

ROHM Semiconductor

RES SMD 39K OHM 5% 0.4W 0805

5000
KTR18EZPF4121

KTR18EZPF4121

ROHM Semiconductor

RES SMD 4.12K OHM 1% 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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