Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERJ-P14D1601U Panasonic	RES SMD 1.6 KOHM 0.5% 1/2W 1210	0
ERJ-S02F4R02X Panasonic	RES 4.02 OHM 1% 1/10W 0402 SMD	0
ERJ-PB3B4991V Panasonic	RES SMD 4.99K OHM 0.1% 1/5W 0603	10971
ERJ-U1DF6193U Panasonic	RES 619K OHM 1% 3/4W 2010 SMD	0
ERJ-P03D6340V Panasonic	RES SMD 634 OHM 0.5% 1/5W 0603	0
ERJ-U03F3001V Panasonic	RES 3K OHM 1% 1/10W 0603 SMD	4900
ERJ-T08J113V Panasonic	RES SMD 11K OHM 5% 1/3W 1206	0
ERJ-8GEYJ330V Panasonic	RES SMD 33 OHM 5% 1/4W 1206	65499
ERJ-H3EF1302V Panasonic	RES 13K OHM 1% 1/6W 0603	0
ERJ-PA3F1022V Panasonic	RES SMD 10.2K OHM 1% 1/4W 0603	0
ERJ-14NF8201U Panasonic	RES SMD 8.2K OHM 1% 1/2W 1210	0
ERJ-S06F1101V Panasonic	RES SMD 1.1K OHM 1% 1/8W 0805	0
ERJ-U06F2493V Panasonic	RES 249K OHM 1% 1/8W 0805 SMD	0
ERJ-S1DF14R3U Panasonic	RES SMD 14.3 OHM 1% 3/4W 2010	0
ERJ-H2RD6200X Panasonic	RES 620 OHM 0.5% 1/10W 0402	0
ERA-6VPB3602V Panasonic	RES 36K OHM 0.1% 1/4W 0805	0
ERJ-UP6F6203V Panasonic	RES 620K OHM 1% 1/2W 0805	0
ERJ-P14F3900U Panasonic	RES SMD 390 OHM 1% 1/2W 1210	0
ERJ-S03F2613V Panasonic	RES SMD 261K OHM 1% 1/10W 0603	0
ERJ-UP6J333V Panasonic	RES 33K OHM 5% 1/2W 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