Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERJ-U02J333X Panasonic	RES 33K OHM 5% 1/10W 0402 SMD	9900
ERJ-P06J3R9V Panasonic	RES SMD 3.9 OHM 5% 1/2W 0805	0
ERJ-PB6B5233V Panasonic	RES SMD 523K OHM 0.1% 1/4W 0805	3975
ERJ-PA3D7503V Panasonic	RES SMD 750K OHM 0.5% 1/4W 0603	0
ERJ-S12F6202U Panasonic	RES SMD 62K OHM 1% 3/4W 1812	0
ERJ-XGNF4640Y Panasonic	RES 464 OHM 1% 1/32W 01005	0
ERJ-S1TJ434U Panasonic	RES SMD 430K OHM 5% 1W 2512	0
ERA-8AEB1871V Panasonic	RES SMD 1.87K OHM 0.1% 1/4W 1206	825
ERJ-P14D8871U Panasonic	RES SMD 8.87 KOHM 0.5% 1/2W 1210	0
ERA-2AEB8662X Panasonic	RES SMD 86.6KOHM 0.1% 1/16W 0402	0
ERJ-S1TF84R5U Panasonic	RES SMD 84.5 OHM 1% 1W 2512	0
ERJ-S1DJ112U Panasonic	RES SMD 1.1K OHM 5% 3/4W 2010	0
ERJ-S06J360V Panasonic	RES SMD 36 OHM 5% 1/8W 0805	0
ERJ-P03F82R0V Panasonic	RES SMD 82 OHM 1% 1/5W 0603	0
ERJ-U3RD1622V Panasonic	RES 16.2K OHM 0.5% 1/10W 0603 SM	0
ERJ-S02F34R0X Panasonic	RES SMD 34 OHM 1% 1/10W 0402	0
ERJ-PA3J1R5V Panasonic	RES SMD 1.5 OHM 5% 1/4W 0603	2449
ERJ-8ENF2203V Panasonic	RES SMD 220K OHM 1% 1/4W 1206	10177
ERJ-U6RD5490V Panasonic	RES 549 OHM 0.5% 1/8W 0805 SMD	0
ERJ-S08F1R82V Panasonic	RES 1.82 OHM 1% 1/8W 1206 SMD	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