Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
RMK22N750RF Vishay / Sfernice	SFERNICE THIN FILMS	0
P1206Y4990WBW Vishay / Sfernice	P 1206 Y 4990 W B WP	0
CHP0805K3163FBT Vishay / Sfernice	RES SMD THICK FILM 0805	0
CHP0505K51R0JWT Vishay / Sfernice	RES SMD THICK FILM 0505	0
CHP0505K1000FBT Vishay / Sfernice	RES SMD THICK FILM 0505	0
P0402E6342BNT Vishay / Sfernice	P 0402 6342 B N TR	0
CHP1206K1743FBT Vishay / Sfernice	RES SMD THICK FILM 1206	0
L0805L2R20GBT Vishay / Sfernice	RES THIN FILM SMD 0805	0
CHP0805L5100GGT Vishay / Sfernice	RES SMD THICK FILM 0805	0
CHP0603L3R83GBT Vishay / Sfernice	RES SMD THICK FILM 0603	0
CHP1206K8451FBT Vishay / Sfernice	RES SMD THICK FILM 1206	0
CHP1206L6803JBT Vishay / Sfernice	RES SMD THICK FILM 1206	0
CHP1505K2610FBT Vishay / Sfernice	RES SMD THICK FILM 1505	0
CHPHT0805K1001FGT Vishay / Sfernice	RES SMD 1K OHM 1% 0.02W 0805	1
D2TO020C47R00KTE3 Vishay / Sfernice	RES SMD 47 OHM 10% 20W TO263	0
CHP0805K4642FNT Vishay / Sfernice	RES SMD THICK FILM 0805	0
CHP1505K2150FBT Vishay / Sfernice	RES SMD THICK FILM 1505	0
CHP1206K5114FNT Vishay / Sfernice	RES SMD THICK FILM 1206	0
P0805K1300FNT Vishay / Sfernice	P 0805 K 1300 F N TR	0
P0603Y1501BNTC Vishay / Sfernice	P 0603 Y 1501 B N TR500	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