Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERJ-U03D13R0V Panasonic	0603 ANTI-SULFUR RES. , 0.5%, 13	0
ERJ-XGNF2491Y Panasonic	RES 2.49K OHM 1% 1/32W 01005	0
ERJ-H2GJ431X Panasonic	RES 430 OHM 5% 1/10W 0402	0
ERJ-S03F1961V Panasonic	RES SMD 1.96K OHM 1% 1/10W 0603	0
ERA-3VRB9311V Panasonic	RES 9.31K OHM 0.1% 1/8W 0603	0
ERJ-S08F2490V Panasonic	RES SMD 249 OHM 1% 1/4W 1206	0
ERJ-S08J134V Panasonic	RES SMD 130K OHM 5% 1/4W 1206	0
ERJ-P08D1053V Panasonic	RES SMD 105 KOHM 0.5% 2/3W 1206	0
ERJ-3EKF2801V Panasonic	RES SMD 2.8K OHM 1% 1/10W 0603	25825
ERJ-P06D8870V Panasonic	RES SMD 887 OHM 0.5% 1/2W 0805	0
ERJ-P14F3092U Panasonic	RES SMD 30.9 KOHM 1% 1/2W 1210	0
ERJ-P08F1543V Panasonic	RES SMD 154 KOHM 1% 2/3W 1206	0
ERA-3AEB4322V Panasonic	RES SMD 43.2KOHM 0.1% 1/10W 0603	13554
ERJ-H2RF5760X Panasonic	RES 576 OHM 1% 1/10W 0402	0
ERJ-PA2F5622X Panasonic	RES SMD 56.2 KOHM 1% 1/5W 0402	0
ERJ-6ENF1803V Panasonic	RES SMD 180K OHM 1% 1/8W 0805	15221
ERJ-U2RD1802X Panasonic	RES 18K OHM 0.5% 1/10W 0402 SMD	9840
ERJ-PA2F2800X Panasonic	RES SMD 280 OHM 1% 1/5W 0402	0
ERJ-6DQF1R1V Panasonic	RES SMD 1.1 OHM 1% 1/2W 0805	841
ERJ-H3QF1R62V Panasonic	RES 1.62 OHM 1% 1/4W 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

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