Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERA-3VPB4702V Panasonic	RES 47K OHM 0.1% 1/8W 0603	0
ERJ-P14D1333U Panasonic	RES SMD 133 KOHM 0.5% 1/2W 1210	0
ERJ-8ENF16R5V Panasonic	RES SMD 16.5 OHM 1% 1/4W 1206	810
ERJ-S08F4321V Panasonic	RES SMD 4.32K OHM 1% 1/4W 1206	0
ERJ-U14F22R1U Panasonic	RES 22.1 OHM 1% 1/2W 1210 SMD	0
ERJ-P06F75R0V Panasonic	RES SMD 75 OHM 1% 1/2W 0805	0
ERJ-P06F7152V Panasonic	RES SMD 71.5 KOHM 1% 1/2W 0805	0
ERJ-6ENF42R2V Panasonic	RES SMD 42.2 OHM 1% 1/8W 0805	53328
ERJ-2RHD1402X Panasonic	RES 14K OHM 0.5% 1/16W 0402	0
ERA-3VRW7681V Panasonic	RES 7.68K OHM 0.05% 1/8W 0603	0
ERJ-U1DF1333U Panasonic	RES 133K OHM 1% 3/4W 2010 SMD	0
ERJ-H2RD5622X Panasonic	RES 56.2K OHM 0.5% 1/10W 0402	0
ERJ-P06F6342V Panasonic	RES SMD 63.4 KOHM 1% 1/2W 0805	0
ERJ-U14F2401U Panasonic	RES 2.4K OHM 1% 1/2W 1210 SMD	0
ERJ-2RKF2101X Panasonic	RES SMD 2.1K OHM 1% 1/10W 0402	0
ERA-6AEB1330V Panasonic	RES 133 OHM 0.1% 1/8W 0805	0
ERJ-XGNJ102Y Panasonic	RES SMD 1K OHM 5% 1/32W 01005	335677
ERA-1AEB2260C Panasonic	RES SMD 226 OHM 0.1% 1/20W 0201	0
ERJ-HP6J393V Panasonic	RES 39K OHM 5% 1/2W 0805	0
ERA-2ARB302X Panasonic	RES SMD 3K OHM 0.1% 1/16W 0402	5690

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