Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERJ-H3ED37R4V Panasonic	RES 37.4 OHM 0.5% 1/6W 0603	0
ERJ-P14D1501U Panasonic	RES SMD 1.5 KOHM 0.5% 1/2W 1210	0
ERJ-S03J121V Panasonic	RES SMD 120 OHM 5% 1/10W 0603	0
ERJ-2RKF4323X Panasonic	RES SMD 432K OHM 1% 1/10W 0402	0
ERJ-PA2F2153X Panasonic	RES SMD 215 KOHM 1% 1/5W 0402	0
ERJ-T14J274U Panasonic	RES SMD 270K OHM 5% 1/2W 1210	0
ERJ-1GEF3600C Panasonic	RES SMD 360 OHM 1% 1/20W 0201	25052
ERA-1ARW3161C Panasonic	RES SMD 3.16K OHM 1/20W 0201	1000
ERJ-14YJ624U Panasonic	RES SMD 620K OHM 5% 1/2W 1210	2062
ERJ-P14F4023U Panasonic	RES SMD 402 KOHM 1% 1/2W 1210	0
ERJ-HP6F10R2V Panasonic	RES 10.2 OHM 1% 1/2W 0805	0
ERJ-P14D1502U Panasonic	RES SMD 15 KOHM 0.5% 1/2W 1210	0
ERA-2AEB182X Panasonic	RES SMD 1.8K OHM 0.1% 1/16W 0402	56430
ERJ-1TNF4532U Panasonic	RES SMD 45.3K OHM 1% 1W 2512	2812
ERJ-PB3B1541V Panasonic	RES SMD 1.54K OHM 0.1% 1/5W 0603	3599
ERA-8ARB2262V Panasonic	RES SMD 22.6K OHM 0.1% 1/4W 1206	920
ERJ-S14F6192U Panasonic	RES SMD 61.9K OHM 1% 1/2W 1210	0
ERJ-8ENF1744V Panasonic	RES SMD 1.74M OHM 1% 1/4W 1206	0
ERJ-P14F2373U Panasonic	RES SMD 237 KOHM 1% 1/2W 1210	0
ERA-3VRB7501V Panasonic	RES 7.5K OHM 0.1% 1/8W 0603	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