Resistors-Chassis Mount

Part Number	Description / PDF	Quantity
3020-01104-0 Murata Power Solutions	RES CHAS MNT 62.5 UOHM .25%	0
10WM133 NTE Electronics, Inc.	RES CHAS MNT 330 OHM 1% 10W	153
HSC100470RJ TE Connectivity AMP Connectors	RES CHAS MNT 470 OHM 5% 100W	22
RH025R1000FC02 Vishay / Dale	RES CHAS MNT 0.1 OHM 1% 25W	0
THS10R22J TE Connectivity AMP Connectors	RES CHAS MNT 0.22 OHM 5% 10W	176
RER55F3R16PC02 Vishay / Dale	RES CHAS MNT 3.16 OHM 1% 30W	0
LPS0800H4700JB Vishay / Sfernice	RES CHAS MNT 470 OHM 5% 800W	16
SQBW20680RJ TE Connectivity AMP Connectors	RES 680 OHM 20W 5% RADIAL	978
RER65F8R25RCSL Vishay / Dale	RES CHAS MNT 8.25 OHM 1% 10W	0
L50J250E Ohmite	RES CHAS MNT 250 OHM 5% 50W	13
TA1K0PH30R0KE Ohmite	RES CHAS MNT 30 OHM 10% 1000W	46
RER55F90R9RC02 Vishay / Dale	RES CHAS MNT 90.9 OHM 1% 30W	0
TJT3001K0J TE Connectivity AMP Connectors	RES CHAS MNT 1K OHM 5% 300W	0
L50J2R0E Ohmite	RES CHAS MNT 2 OHM 5% 50W	25
FVTS10R1E1K000JE Vishay / Huntington Electric, Inc.	RES CHAS MNT 1K OHM 5% 12W	0
LPS0800H2702JB Vishay / Sfernice	LPS 800 H 27K 5% BO15	0
RER65FR121PC02 Vishay / Dale	RES CHAS MNT 0.121 OHM 1% 10W	0
HS25 R47 J Ohmite	RES CHAS MNT 0.47 OHM 5% 25W	0
TGHMV1R00JE Ohmite	1 OHM 300 WATT SOT227 5% TF	0
HS15 270R J Ohmite	RES CHAS MNT 270 OHM 5% 15W	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.