Resistors-Chassis Mount

Part Number	Description / PDF	Quantity
TE1000B4R7J TE Connectivity AMP Connectors	RES CHAS MNT 4.7 OHM 5% 1000W	11
AHA50AJB-75R Yageo	RES CHAS MNT 75 OHM 5% 50W	0
TE750B33RJ TE Connectivity AMP Connectors	RES CHAS MNT 33 OHM 5% 750W	10
TL88K10R0E Ohmite	RES CHAS MNT 10 OHM 10% 114W	0
HS15 1K J Ohmite	RES CHAS MNT 1K OHM 5% 15W	0
FVT20020E100R0JE Vishay / Huntington Electric, Inc.	RES CHAS MNT 100 OHM 5% 225W	67
HSA5075KE TE Connectivity AMP Connectors	RES CHAS MNT 75K OHM 3% 50W	0
AHA10AFB-1R Yageo	RES CHAS MNT 1 OHM 1% 10W	9
HS50 5R6 J Ohmite	RES CHAS MNT 5.6 OHM 5% 50W	40
THS50R01J TE Connectivity AMP Connectors	RES CHAS MNT 0.01 OHM 5% 50W	74
RER55F2870MC02 Vishay / Dale	RES CHAS MNT 287 OHM 1% 30W	0
THS10560RJ TE Connectivity AMP Connectors	RES CHAS MNT 560 OHM 5% 10W	22
F30J75RE Ohmite	RES CHAS MNT 75 OHM 5% 30W	0
825F150E Ohmite	RES CHAS MNT 150 OHM 1% 25W	139
25WM330 NTE Electronics, Inc.	RES CHAS MNT 30K OHM 5% 25W	66
TJT5002K2J TE Connectivity AMP Connectors	RES CHAS MNT 2.2K OHM 5% 500W	9
HSA50180RE TE Connectivity AMP Connectors	RES CHAS MNT 180 OHM 3% 50W	0
RER65F90R9RC02 Vishay / Dale	RES CHAS MNT 90.9 OHM 1% 10W	0
THS2575RJ TE Connectivity AMP Connectors	RES CHAS MNT 75 OHM 5% 25W	199
RER55F2000RCSL Vishay / Dale	RES CHAS MNT 200 OHM 1% 30W	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.