Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERJ-2RKF6041X Panasonic	RES SMD 6.04K OHM 1% 1/10W 0402	0
ERA-8AEB2671V Panasonic	RES SMD 2.67K OHM 0.1% 1/4W 1206	146
ERJ-HP6F7322V Panasonic	RES 73.2K OHM 1% 1/2W 0805	0
ERJ-U0XJ362Y Panasonic	RES 3.6K OHM 5% 1/32W 01005	0
ERA-8ARB6982V Panasonic	RES SMD 69.8K OHM 0.1% 1/4W 1206	974
ERA-8AEB1911V Panasonic	RES SMD 1.91K OHM 0.1% 1/4W 1206	6990
ERJ-8ENF82R5V Panasonic	RES SMD 82.5 OHM 1% 1/4W 1206	14950
ERJ-3RSJR18V Panasonic	RES 0.18 OHM 5% 1/10W 0603	12913
ERJ-S12F3650U Panasonic	RES SMD 365 OHM 1% 3/4W 1812	0
ERJ-P6WJ473V Panasonic	RES SMD 47K OHM 5% 1/2W 0805	4791
ERJ-P6WF3090V Panasonic	RES SMD 309 OHM 1% 1/2W 0805	0
ERJ-P14D46R4U Panasonic	RES SMD 46.4 OHM 0.5% 1/2W 1210	0
ERJ-P14J681U Panasonic	RES SMD 680 OHM 5% 1/2W 1210	2485
ERJ-S12F43R2U Panasonic	RES SMD 43.2 OHM 1% 3/4W 1812	0
ERJ-1GEF2051C Panasonic	RES SMD 2.05K OHM 1% 1/20W 0201	26079
ERJ-PB6D5491V Panasonic	RES SMD 5.49K OHM 0.5% 1/4W 0805	4805
ERJ-S08J564V Panasonic	RES SMD 560K OHM 5% 1/4W 1206	0
ERJ-6BQJ4R7V Panasonic	RES SMD 4.7 OHM 5% 1/3W 0805	4720
ERJ-P08F1650V Panasonic	RES SMD 165 OHM 1% 2/3W 1206	0
ERJ-S1TF1180U Panasonic	RES SMD 118 OHM 1% 1W 2512	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

Type	Functional Characteristics	Application Examples
Thick Film Resistors	Cost-effective, standard tolerance ( 1%-5%), power ratings up to 1W	Consumer electronics, power supplies
Thin Film Resistors	High precision ( 0.01%), low noise, stable temperature coefficients	Medical devices, precision instrumentation
Power Resistors	High power dissipation (up to 3W), robust thermal management	Motor drives, EV battery management systems
Network Resistors	Multiple resistors in single package, matched temperature coefficients	Digital circuits, memory modules
Wirewound Resistors	High inductance, precise low-resistance values	Audio 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

Parameter	Description	Importance
Resistance Range	1 to 10M (film), 0.1 to 100k (power)	Determines current control capability
Tolerance	0.01% (precision) to 5% (general)	Impacts circuit accuracy
Power Rating	0.05W to 3W @ 70 C	Defines thermal dissipation limits
TCR	5ppm/ C (thin film) to 200ppm/ C	Affects stability over temperature
Operating Temp	-55 C to +155 C	Defines environmental reliability
Voltage Coefficient	<0.1ppm/V	Ensures 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

Manufacturer	Representative Series	Key Features
Yageo	CRCW Series	0.05W-1W, 0.1% tolerance
Vishay	CRCWE Series	Thin film, TCR 25ppm/ C
ROHM	MCR Series	Power resistors up to 2W
Ohmite	PWR Series	High-power 3W devices
Bourns	CRCU Series	Network 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