Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERJ-PA3D7151V Panasonic	RES SMD 7.15K OHM 0.5% 1/4W 0603	0
ERJ-P03D62R0V Panasonic	RES SMD 62 OHM 0.5% 1/5W 0603	0
ERJ-P14F9533U Panasonic	RES SMD 953 KOHM 1% 1/2W 1210	0
ERJ-B3BFR43V Panasonic	RES 0.43 OHM 1/2W 0805 WIDE	0
ERJ-U1TF8453U Panasonic	RES 845K OHM 1% 1W 2512 SMD	0
ERA-2ARC9761X Panasonic	RES SMD 9.76K OHM 1/16W 0402	970
ERJ-S08F9313V Panasonic	RES SMD 931K OHM 1% 1/4W 1206	0
ERJ-P03D12R1V Panasonic	RES SMD 12.1 OHM 0.5% 1/5W 0603	0
ERJ-PB3D5111V Panasonic	RES SMD 5.11K OHM 0.5% 1/5W 0603	183
ERA-8ARB1542V Panasonic	RES SMD 15.4K OHM 0.1% 1/4W 1206	970
ERJ-8BQJ8R2V Panasonic	RES SMD 8.2 OHM 5% 1/2W 1206	2915
ERJ-PB3D6200V Panasonic	RES SMD 620 OHM 0.5% 1/5W 0603	6711
ERJ-UP6F3300V Panasonic	RES 330 OHM 1% 1/2W 0805	0
ERJ-H2RF1333X Panasonic	RES 133K OHM 1% 1/10W 0402	0
ERJ-U12F6983U Panasonic	RES 698K OHM 1% 3/4W 1812 SMD	0
ERA-2ARC7681X Panasonic	RES SMD 7.68K OHM 1/16W 0402	875
ERA-8APB4322V Panasonic	RES SMD 43.2K OHM 0.1% 1/4W 1206	1000
ERJ-P6WF7680V Panasonic	RES SMD 768 OHM 1% 1/2W 0805	0
ERJ-U03F78R7V Panasonic	RES 78.7 OHM 1% 1/10W 0603 SMD	0
ERA-2AEB1402X Panasonic	RES SMD 14K OHM 0.1% 1/16W 0402	33273

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