Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERJ-B2CFR013V Panasonic	RES 0.013 OHM 1W 1206 WIDE	0
ERJ-U3RD6490V Panasonic	RES 649 OHM 0.5% 1/10W 0603 SMD	0
ERA-8AEB1692V Panasonic	RES SMD 16.9K OHM 0.1% 1/4W 1206	5011
ERJ-U06F5761V Panasonic	RES 5.76K OHM 1% 1/8W 0805 SMD	0
ERJ-1TNF8203U Panasonic	RES SMD 820K OHM 1% 1W 2512	7275
ERA-1ARC222C Panasonic	RES SMD 2.2KOHM 0.25% 1/20W 0201	3617
ERJ-P14D4533U Panasonic	RES SMD 453 KOHM 0.5% 1/2W 1210	0
ERJ-UP3D1803V Panasonic	RES 180K OHM 0.5% 1.4W 0603	0
ERJ-U03F1R87V Panasonic	RES 1.87 OHM 1% 1/10W 0603 SMD	0
ERA-2AEB66R5X Panasonic	RES SMD 66.5 OHM 0.1% 1/16W 0402	9590
ERJ-XGNJ164Y Panasonic	RES SMD 160K OHM 5% 1/32W 01005	0
ERJ-PB3D6191V Panasonic	RES SMD 6.19K OHM 0.5% 1/5W 0603	2904
ERJ-S02F9310X Panasonic	RES SMD 931 OHM 1% 1/10W 0402	0
ERJ-S06F20R5V Panasonic	RES SMD 20.5 OHM 1% 1/8W 0805	0
ERJ-S02F68R1X Panasonic	RES SMD 68.1 OHM 1% 1/10W 0402	0
ERA-6VEB4702V Panasonic	RES 47K OHM 0.1% 1/4W 0805	4759
ERJ-14BSJR18U Panasonic	RES 0.18 OHM 5% 1/2W 1210	363
ERJ-P06J750V Panasonic	RES SMD 75 OHM 5% 1/2W 0805	2
ERJ-P6WF52R3V Panasonic	RES SMD 52.3 OHM 1% 1/2W 0805	0
ERA-6VRW6812V Panasonic	RES 68.1K OHM 0.05% 1/4W 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