Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
RMK22N4K7B Vishay / Sfernice	SFERNICE THIN FILMS	0
CHP0805K3481FBT Vishay / Sfernice	RES SMD THICK FILM 0805	0
CHP0805K7501FNT Vishay / Sfernice	RES SMD THICK FILM 0805	0
CHP0603K2702FGT Vishay / Sfernice	RES SMD THICK FILM 0603	0
CHP0805K3602FBT Vishay / Sfernice	RES SMD THICK FILM 0805	0
CHP2010L1R47GGT Vishay / Sfernice	RES SMD THICK FILM 2010	0
CHP2010K50R0FBTA Vishay / Sfernice	RES SMD THICK FILM 2010	0
CHPHT0603K2371FGT Vishay / Sfernice	RES SMD 2.37KOHM 1% 0.0125W 0603	80
CHP2010K18R7FBT Vishay / Sfernice	RES SMD THICK FILM 2010	0
CHP0805K68R1FNT Vishay / Sfernice	RES SMD THICK FILM 0805	0
PHT0402E4701BGT Vishay / Sfernice	PHT 0402 4701 B G TR	0
CHP2512L1R00GGT Vishay / Sfernice	RES SMD THICK FILM 2512	0
CHP1206K3322FBT Vishay / Sfernice	RES SMD THICK FILM 1206	0
L0805LR820JBT Vishay / Sfernice	RES THIN FILM SMD 0805	0
CHP0603L2R21GNT Vishay / Sfernice	RES SMD THICK FILM 0603	0
D2TO035C150R0FTE3 Vishay / Sfernice	RES SMD 150 OHM 1% 35W TO263	0
CHP1206K7150FBT Vishay / Sfernice	RES SMD THICK FILM 1206	0
CHP0603L1801JBT Vishay / Sfernice	RES SMD THICK FILM 0603	0
CHP2512L3302JNT Vishay / Sfernice	RES SMD THICK FILM 2512	0
CHP2010L4700JBT Vishay / Sfernice	RES SMD THICK FILM 2010	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