Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
SR1-0603-018 NTE Electronics, Inc.	RES 18 OHM 5% 1/16W 0603	2909
SR1-0805-062 NTE Electronics, Inc.	RES 62 OHM 5% 1/8W 0805	4804
SR1-0603-082 NTE Electronics, Inc.	RES 82 OHM 5% 1/16W 0603	2324
SR1-1206-075 NTE Electronics, Inc.	RES 75 OHM 5% 1/4W 1206	2357
SR1-0805-218 NTE Electronics, Inc.	RES 1.8K OHM 5% 1/8W 0805	1813
SR1-0603-243 NTE Electronics, Inc.	RES 4.3K OHM 5% 1/16W 0603	1056
SR1-0603-3D3 NTE Electronics, Inc.	RES 3.3 OHM 5% 1/16W 0603	3983
SR1-1206-133 NTE Electronics, Inc.	RES 330 OHM 5% 1/4W 1206	107
SR1-1206-36 NTE Electronics, Inc.	RES SMD 36 OHM 5% 1/4W 1206	0
SR1-0805-410 NTE Electronics, Inc.	RES 100K OHM 5% 1/8W 0805	688
SR1-0805-010 NTE Electronics, Inc.	RES 10 OHM 5% 1/8W 0805	4101
SR1-0603-456 NTE Electronics, Inc.	RES 560K OHM 5% 1/16W 0603	1248
SR1-1206-091 NTE Electronics, Inc.	RES 91 OHM 5% 1/4W 1206	599
SR1-1206-3D9 NTE Electronics, Inc.	RES 3.9 OHM 5% 1/4W 1206	1252
SR1-1206-316 NTE Electronics, Inc.	RES 18K OHM 5% 1/4W 1206	2183
SR1-1206-110 NTE Electronics, Inc.	RES 100 OHM 5% 1/4W 1206	2309
SR1-0805-227 NTE Electronics, Inc.	RES 2.7K OHM 5% 1/8W 0805	3007
SR1-0603-124 NTE Electronics, Inc.	RES 240 OHM 5% 1/16W 0603	3760
SR1-0805-330 NTE Electronics, Inc.	RES 30K OHM 5% 1/8W 0805	213
SR1-0805-220 NTE Electronics, Inc.	RES 2K OHM 5% 1/8W 0805	3381

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