Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERA-3VEB5491V Panasonic	RES 5.49K OHM 0.1% 1/8W 0603	0
ERJ-U02D1102X Panasonic	0402 ANTI-SULFUR RES. , 0.5%, 11	0
ERJ-U02J1R5X Panasonic	RES 1.5 OHM 5% 1/10W 0402 SMD	10000
ERA-6VRW8452V Panasonic	RES 84.5K OHM 0.05% 1/4W 0805	0
ERJ-S06F13R0V Panasonic	RES SMD 13 OHM 1% 1/8W 0805	0
ERJ-3EKF1692V Panasonic	RES SMD 16.9K OHM 1% 1/10W 0603	477094
ERJ-S1DF21R5U Panasonic	RES SMD 21.5 OHM 1% 3/4W 2010	0
ERA-3VEB4120V Panasonic	RES 412 OHM 0.1% 1/8W 0603	0
ERJ-HP6F1650V Panasonic	RES 165 OHM 1% 1/2W 0805	0
ERA-6AEB681V Panasonic	RES 680 OHM 0.1% 1/8W 0805	36029
ERJ-PB3B1472V Panasonic	RES SMD 14.7K OHM 0.1% 1/5W 0603	0
ERJ-H3EF30R9V Panasonic	RES 30.9 OHM 1% 1/6W 0603	0
ERJ-2RHD7150X Panasonic	RES 715 OHM 0.5% 1/16W 0402	0
ERJ-U01F2742C Panasonic	RES 27.4K OHM 1% 1/20W 0201 SMD	0
ERJ-U03D9312V Panasonic	0603 ANTI-SULFUR RES. , 0.5%, 93	0
ERJ-UP3D11R3V Panasonic	RES 11.3 OHM 0.5% 1.4W 0603	0
ERJ-L06UJ96MV Panasonic	RES 0.096 OHM 5% 1/4W 0805	0
ERJ-1TNF84R5U Panasonic	RES SMD 84.5 OHM 1% 1W 2512	0
ERJ-14NF3013U Panasonic	RES SMD 301K OHM 1% 1/2W 1210	9623
ERJ-S06F7872V Panasonic	RES SMD 78.7K OHM 1% 1/8W 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