Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
ERJ-P06D2403V Panasonic	RES SMD 240 KOHM 0.5% 1/2W 0805	0
ERJ-H3EF4322V Panasonic	RES 43.2K OHM 1% 1/6W 0603	0
ERJ-3GEYJ202V Panasonic	RES SMD 2K OHM 5% 1/10W 0603	0
ERJ-UP3D4303V Panasonic	RES 430K OHM 0.5% 1.4W 0603	0
ERJ-3GEYJ133V Panasonic	RES SMD 13K OHM 5% 1/10W 0603	33605
ERJ-P08D1301V Panasonic	RES SMD 1.3 KOHM 0.5% 2/3W 1206	0
ERJ-6ENF7151V Panasonic	RES SMD 7.15K OHM 1% 1/8W 0805	28544
ERJ-3GEYJ751V Panasonic	RES SMD 750 OHM 5% 1/10W 0603	40821
ERJ-T08J682V Panasonic	RES SMD 6.8K OHM 5% 1/3W 1206	0
ERJ-1GNF1742C Panasonic	RES SMD 17.4K OHM 1% 1/20W 0201	41197
ERJ-P06D3603V Panasonic	RES SMD 360 KOHM 0.5% 1/2W 0805	0
ERA-6VRB1652V Panasonic	RES 16.5K OHM 0.1% 1/4W 0805	0
ERJ-P14F1331U Panasonic	RES SMD 1.33 KOHM 1% 1/2W 1210	0
ERJ-S03F4750V Panasonic	RES SMD 475 OHM 1% 1/10W 0603	0
ERJ-S1TJ561U Panasonic	RES SMD 560 OHM 5% 1W 2512	0
ERA-2AEB301X Panasonic	RES SMD 300 OHM 0.1% 1/16W 0402	39348
ERA-6VRB2492V Panasonic	RES 24.9K OHM 0.1% 1/4W 0805	0
ERJ-PA3J243V Panasonic	RES SMD 24K OHM 5% 1/4W 0603	18410
ERJ-8ENF4120V Panasonic	RES SMD 412 OHM 1% 1/4W 1206	50121
ERJ-6GEYJ684V Panasonic	RES SMD 680K OHM 5% 1/8W 0805	65872

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