Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERJ-3EKF22R1V Panasonic	RES SMD 22.1 OHM 1% 1/10W 0603	4151
ERJ-S1TF80R6U Panasonic	RES SMD 80.6 OHM 1% 1W 2512	0
ERJ-S12F31R6U Panasonic	RES SMD 31.6 OHM 1% 3/4W 1812	0
ERJ-P6WF4702V Panasonic	RES SMD 47K OHM 1% 1/2W 0805	2572
ERA-6AEB1653V Panasonic	RES 165K OHM 0.1% 1/8W 0805	45668
ERA-3APB561V Panasonic	RES SMD 560 OHM 0.1% 1/10W 0603	5329
ERJ-S08F1872V Panasonic	RES SMD 18.7K OHM 1% 1/4W 1206	0
ERJ-U02F46R4X Panasonic	RES 46.4 OHM 1% 1/10W 0402 SMD	0
ERJ-P14F56R0U Panasonic	RES SMD 56 OHM 1% 1/2W 1210	0
ERJ-S1DF8250U Panasonic	RES SMD 825 OHM 1% 3/4W 2010	0
ERJ-S12J825U Panasonic	RES 8.2 M OHM 5% 3/4W 1812 SMD	0
ERJ-UP6F13R0V Panasonic	RES 13 OHM 1% 1/2W 0805	0
ERJ-PB6B5100V Panasonic	RES SMD 510 OHM 0.1% 1/4W 0805	1209
ERJ-H2RD5760X Panasonic	RES 576 OHM 0.5% 1/10W 0402	0
ERJ-PA3J560V Panasonic	RES SMD 56 OHM 5% 1/4W 0603	54657
ERJ-UP3F1240V Panasonic	RES 124 OHM 1% 1.4W 0603	0
ERJ-H3ED3831V Panasonic	RES 3.83K OHM 0.5% 1/6W 0603	0
ERJ-S14J6R2U Panasonic	RES 6.2 OHM 5% 1/2W 1210 SMD	0
ERJ-S1TF2431U Panasonic	RES SMD 2.43K OHM 1% 1W 2512	0
ERJ-HP6D1542V Panasonic	RES 15.4K OHM 0.5% 1/2W 0805	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