Resistors-Chassis Mount

Image	Part Number	Description / PDF	Quantity	Rfq
	RER65F5490RC02 Vishay / Dale	RES CHAS MNT 549 OHM 1% 10W	0
	RER65FR715RC02 Vishay / Dale	RES CHAS MNT 0.715 OHM 1% 10W	0
	RER65F90R9MC02 Vishay / Dale	RES CHAS MNT 90.9 OHM 1% 10W	0
	RER55F1R30RCSL Vishay / Dale	RES CHAS MNT 1.3 OHM 1% 30W	0
	RER65FR221RCSL Vishay / Dale	RES CHAS MNT 0.221 OHM 1% 10W	0
	RER65F56R2MC02 Vishay / Dale	RES CHAS MNT 56.2 OHM 1% 10W	0
	RER55F33R2RC02 Vishay / Dale	RES CHAS MNT 33.2 OHM 1% 30W	0
	RER65F1010RC02 Vishay / Dale	RES CHAS MNT 101 OHM 1% 10W	0
	TMC0055R000FE02 Vishay / Dale	RES CHAS MNT 5 OHM 1% 7.5W	0
	RER55F24R9RCSL Vishay / Dale	RES CHAS MNT 24.9 OHM 1% 30W	0
	RER65F1860RCSL Vishay / Dale	RES CHAS MNT 186 OHM 1% 10W	0
	RER55F3830RCSL Vishay / Dale	RES CHAS MNT 383 OHM 1% 30W	0
	RER65F8R45MC02 Vishay / Dale	RES CHAS MNT 8.45 OHM 1% 10W	0
	RER65F1330RC02 Vishay / Dale	RES CHAS MNT 133 OHM 1% 10W	0
	RER55F2R80RCSL Vishay / Dale	RES CHAS MNT 2.8 OHM 1% 30W	0
	TMC0506R000FE02 Vishay / Dale	RES CHAS MNT 6 OHM 1% 50W	0
	RER65FR909RC02 Vishay / Dale	RES CHAS MNT 0.909 OHM 1% 10W	0
	RER65F15R0RC02 Vishay / Dale	RES CHAS MNT 15 OHM 1% 10W	0
	RER55F1300RCSL Vishay / Dale	RES CHAS MNT 130 OHM 1% 30W	0
	RER65FR221MC02 Vishay / Dale	RES CHAS MNT 0.221 OHM 1% 10W	0

Resistors-Chassis Mount

1. Overview

Chassis Mount Resistors are specialized electronic components designed for direct mounting onto equipment chassis or heat sinks. They provide critical functions including current limiting, voltage division, and energy dissipation in high-power applications. Their importance in modern technology lies in enabling thermal management stability and electrical performance in industrial, automotive, and power electronics systems.

2. Major Types and Functional Classification

Type	Functional Features	Application Examples
Wirewound Chassis Mount	High precision, pulse stability, 10-100W power rating	Industrial motor drives, test equipment
Film Type Chassis Mount	Low noise, fast response, 5-50W rating	Communication infrastructure, medical devices
Ceramic Composite Mount	High-temperature resistance, 50-300W rating	EV charging systems, renewable energy inverters

3. Structure and Composition

Typical construction includes:

Aluminum alloy heat-dissipating housing (surface-anodized for insulation)
High-purity ceramic substrate with resistive element (NiCr or TaN)
Multi-layer silicone coating for vibration resistance
Brass/copper alloy mounting terminals (anti-corrosion plated)

Thermal interface materials (TIM) ensure efficient heat transfer to chassis.

4. Key Technical Specifications

Parameter	Importance	Typical Range
Rated Power	Determines thermal handling capacity	5-500W
Resistance Range	Affects current regulation precision	0.1 -100k
Tolerance	Impacts circuit accuracy	0.5% to 5%
Temperature Coefficient	Stability over operating temperature	50-200ppm/ C
Dielectric Strength	Safety insulation performance	1.5-5kV

5. Application Fields

Primary industries include:

Industrial automation (variable frequency drives, PLCs)
Renewable energy (solar inverters, wind turbine converters)
Transportation (EV on-board chargers, railway traction systems)
Telecommunications (base station power amplifiers, data center PSUs)

Case Study: 300W ceramic composite resistors in EV fast chargers enable 15-minute battery charging cycles.

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Vishay Precision Group	CPW-100	100W wirewound, 0.1% tolerance
Ohmite Manufacturing	270 series	500W ceramic housing, IP65 rated
Panasonic Electronic	ERJ-P11	Thin-film technology, 100ppm/ C stability

7. Selection Guidelines

Key considerations:

Calculate required power derating (70% of max rating recommended)
Match resistance value with system voltage/current requirements
Evaluate thermal interface compatibility with chassis
Consider environmental factors (humidity, vibration, ambient temperature)
Budget allocation: High-reliability models may cost 2-3 standard versions

8. Industry Trends Analysis

Current development trends include:

Nano-ceramic materials enabling 40% smaller form factors
Integrated temperature sensing resistors for smart power systems
Graphene-enhanced thermal coatings improving heat dissipation by 25%
Automotive-grade models supporting 150 C operating temperatures
Industry 4.0 compatibility with IoT-enabled resistance monitoring

Market projections indicate 8.7% CAGR through 2030 driven by EV and 5G infrastructure demands.