Chip Resistors-Surface Mount

Part Number	Description / PDF	Quantity
HVC0603N5007KET Ohmite	RES SMD 5G OHM 10% 1/10W 0603	1163
RW2S0CBR500J Ohmite	RES SMD 500M OHM 5% 2W J LEAD	69
FC4TR100FER Ohmite	RES 0.1 OHM 1% 1/2W 1206	351
HVC0603T2504FET Ohmite	RES SMD 2.5M OHM 1% 1/10W 0603	1380
ACPP0805 24K B Ohmite	RES SMD 24K OHM 0.1% 1/10W 0805	0
TDH35P150RJE Ohmite	RES SMD 150 OHM 5% 35W D2PAK	149
RW2S0CBR010JT Ohmite	RES 0.01 OHM 5% 2W J LEAD	0
LVK20R010FER Ohmite	RES 0.01 OHM 1% 3/4W 2010	2871
EBWB-NR0030FET Ohmite	RES 0.003 OHM 1% 3.5W 5930	49
PCS1206FR0020ET Ohmite	1W 0.002 OHMS 1% 1206	11820
RW2S0CBR020JET Ohmite	RES 0.02 OHM 5% 2W J LEAD	0
TDH50H1K00FE-TR Ohmite	TO-263 HEATSINKABLE THICK FILM R	464
RW0S6BBR750FET Ohmite	RES 0.75 OHM 1% 0.6W 2010	0
PCS2728DR0250ET Ohmite	4W 0.025 OHMS 0.5% 2728	1863
RW1S0BAR005J Ohmite	RES 0.005 OHM 5% 1W J LEAD	0
RW3R0DB100RJE Ohmite	RES SMD 100 OHM 5% 3W J LEAD	0
RW2R0DAR100JE Ohmite	RES 0.1 OHM 5% 2W J LEAD	177
RW1S0BAR100F Ohmite	RES 0.1 OHM 1% 1W J LEAD	14
KDV04DR050ET Ohmite	RESISTOR CURRENT SENSE	9995
ACPP0805 120R B Ohmite	RES SMD 120 OHM 0.1% 1/10W 0805	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