Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
CPF0603B169RE TE Connectivity AMP Connectors	RES 169 OHM 0.1% 1/16W 0603	0
RP73D2B12R7BTDF TE Connectivity AMP Connectors	RES SMD 12.7 OHM 0.1% 1/4W 1206	0
CPF0805B7K87E1 TE Connectivity AMP Connectors	RES SMD 7.87KOHM 0.1% 1/10W 0805	0
CRGH2512J2K4 TE Connectivity AMP Connectors	RES SMD 2.4K OHM 5% 2W 2512	0
CPF1206B255RE1 TE Connectivity AMP Connectors	RES SMD 255 OHM 0.1% 1/8W 1206	0
CRGH0805J5M1 TE Connectivity AMP Connectors	RES SMD 5.1M OHM 5% 1/3W 0805	0
CRGH2010J3K3 TE Connectivity AMP Connectors	RES SMD 3.3K OHM 5% 1W 2010	0
CPF0805B34KE TE Connectivity AMP Connectors	RES 34 KOHM 0.1% 1/10W 0805	0
CRGH0603F11R5 TE Connectivity AMP Connectors	RES SMD 11.5 OHM 1% 1/5W 0603	0
CPF-A-0805B4K7E TE Connectivity AMP Connectors	RES SMD 4.7K OHM 0.1% 1/10W 0805	0
CRGH0805F127R TE Connectivity AMP Connectors	RES SMD 127 OHM 1% 1/3W 0805	0
RN73C1J140KBTD TE Connectivity AMP Connectors	RES SMD 140K OHM 0.1% 1/16W 0603	17279
CPF0805B340RE1 TE Connectivity AMP Connectors	RES SMD 340 OHM 0.1% 1/10W 0805	0
RN73C1J19R6BTDF TE Connectivity AMP Connectors	RES SMD 19.6 OHM 0.1% 1/16W 0603	0
CRGCQ0805F10K TE Connectivity AMP Connectors	CRGCQ 0805 10K 1%	45852
RP73D2B118RBTDF TE Connectivity AMP Connectors	RES SMD 118 OHM 0.1% 1/4W 1206	0
CRGH0603J82K TE Connectivity AMP Connectors	RES SMD 82K OHM 5% 1/5W 0603	0
RP73D2B357RBTG TE Connectivity AMP Connectors	RES SMD 357 OHM 0.1% 1/4W 1206	0
RN73C1J24R9BTDF TE Connectivity AMP Connectors	RES SMD 24.9 OHM 0.1% 1/16W 0603	0
CPF0603B2K05E TE Connectivity AMP Connectors	RES 2.05 KOHM 0.1% 1/16W 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