Resistors-Chassis Mount

Part Number	Description / PDF	Quantity
LPS1100H4700JB Vishay / Sfernice	RES CHAS MNT 470 OHM 5% 1100W	13
RCH50S100R0JS06 Vishay / Sfernice	RES CHAS MNT 100 OHM 5% 50W	46
RCEC400GS22R0JB Vishay / Sfernice	RCEC 400 GS 22U 5% BO20	0
RSO25168C10R5JB04 Vishay / Sfernice	RSO 25X168 CS 10U5 5% BO4	0
RW13X70B391JB00 Vishay / Sfernice	RW 13X70 B 390U 5% BO50NA	0
LPS0300L2203KB Vishay / Sfernice	LPS 300 L 220K 10% BO15	0
RPS0500DH4R70JB Vishay / Sfernice	RES CHAS MNT 4.7 OHM 5% 500W	32
LPSA600H4R70JB Vishay / Sfernice	LPSA 600 H 4U7 5% BO15	0
LPSA300L4700JB Vishay / Sfernice	LPSA 300 L 470U 5% BO15	0
RCMC5001R00KB Vishay / Sfernice	MCB RESISTORS	0
RCH50S2R200JS06 Vishay / Sfernice	RES CHAS MNT 2.2 OHM 5% 50W	3
LPS0300H4700JB Vishay / Sfernice	RES CHAS MNT 470 OHM 5% 300W	21
RTOP200V75R0JB Vishay / Sfernice	RTOP 200 75U 5% V BO10	0
LPSA800H1001JB Vishay / Sfernice	LPSA 800 H 1K 5% BO15	0
RPS0500AL10R0JB Vishay / Sfernice	RPS 500A L 10U 5% BO15	0
RH5035R70FS03 Vishay / Sfernice	RH 50 35U7 1% BA10	0
RTOP100V4701JB Vishay / Sfernice	SFERNICE FIXED RESISTORS	10
LPSA800L1R00JB Vishay / Sfernice	LPSA 800 L 1U 5% BO15	0
RCEC400GS5R60KB Vishay / Sfernice	MCB RESISTORS	20
RCH50S22001JS06 Vishay / Sfernice	RES CHAS MNT 22K OHM 5% 50W	12

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.