Thermal - Accessories

Part Number	Description / PDF	Quantity
V21HK ASSMANN WSW Components	CLIP HEAT SINK ASST PKGS	47
V03HK ASSMANN WSW Components	HEATSINK CLIP TO-220/TO-3/SOT-32	0
V08HK ASSMANN WSW Components	HEAT SINK CLIP TO-220	38074000
V12HK ASSMANN WSW Components	HEATSINK CLIP TO-220/TO-3/SOT-32	792
V5731 ASSMANN WSW Components	HEATSINK ALUM ANOD	1229
V5818 ASSMANN WSW Components	HEATSINK ALUM ANOD	1717
V5817 ASSMANN WSW Components	HEATSINK ALUM ANOD	0
V5358 ASSMANN WSW Components	HEATSINK ALUM ANOD	0
V5357 ASSMANN WSW Components	HEATSINK ALUM ANOD	0
V5359 ASSMANN WSW Components	HEATSINK ALUM ANOD	30450
V06HK-T ASSMANN WSW Components	HEATSINK CLIP TO-220/TO-3/SOT-32	268
V25HK ASSMANN WSW Components	HEAT SINK CLIP TO-220	2
V5815 ASSMANN WSW Components	HEATSINK ALUM ANOD	2206
V5816 ASSMANN WSW Components	HEATSINK ALUM ANOD	4446
V11HK ASSMANN WSW Components	CLIP HEAT SINK ASST PKGS	1326
V22HK ASSMANN WSW Components	CLIP TO-220/TO-247/TO-248/TO-3P	0
V24HK ASSMANN WSW Components	HEAT SINK CLIP TO-220	0

Thermal - Accessories

1. Overview

Thermal accessories are critical components in thermal management systems, designed to dissipate heat and maintain optimal operating temperatures for electronic devices. These accessories include fans, heat sinks, thermal interface materials, and related components that ensure efficient heat transfer and system reliability. With increasing power densities in modern electronics, effective thermal management has become essential for performance, longevity, and safety across industries such as computing, telecommunications, and automotive.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
DC/AC Fans	Active cooling via airflow generation, variable speed control	PC cooling, server racks, industrial machinery
Heat Sinks	Passive heat dissipation through conductive materials	CPU/GPU cooling, power electronics, LED lighting
Thermal Pads/Grease	Fill gaps between components and heat sinks for improved conduction	Motherboards, automotive electronics, handheld devices
Heat Pipes	High-efficiency phase-change heat transfer	Laptops, aerospace systems, industrial lasers
Fan Ducts/Shrouds	Direct airflow to specific components	Data center cooling, automotive radiators

3. Structure and Components

Typical thermal accessories combine mechanical and thermal engineering principles:

Fans: Motor-driven blades (plastic/metal), bearing systems (sleeve/ball), housing with mounting features
Heat Sinks: Base plate (aluminum/copper) with extended fins, surface treatments (anodization, plating)
Thermal Interface Materials: Silicone-based compounds, phase-change materials, or graphite sheets with controlled thickness
Heat Pipes: Sealed copper tubes with wick structures and working fluids (water, ammonia)

4. Key Technical Specifications

Parameter	Description	Importance
Thermal Resistance ( C/W)	Material's ability to conduct heat	Determines cooling efficiency
Airflow (CFM)	Volumetric air movement capacity	Impacts active cooling performance
Noise Level (dBA)	Acoustic emissions during operation	Critical for user experience
MTBF (hours)	Mean Time Between Failures	Indicates product reliability
Dimensions (mm)	Physical size constraints	Key for system integration

5. Application Fields

Consumer Electronics: Gaming consoles, laptops, smartphones
Industrial: CNC machines, power inverters, robotics
Telecom: 5G base stations, network switches, optical transceivers
Automotive: EV battery cooling, onboard chargers, radar systems
Aerospace: Avionics cooling, satellite thermal control

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Delta Electronics	AFB1212SH	4000 RPM industrial fan with IP52 rating
Cooler Master	Hyper 212 RGB	Tower heat sink with multiple heat pipes
Aavid (TE Connectivity)	Thermal Gap Pad 1500	1.5W/mK conductivity, 0.5mm thickness
Noctua	NH-U12S Redux	Low-noise PC CPU cooler

7. Selection Recommendations

Key considerations include:

Thermal requirements (power dissipation, operating temperature range)
Environmental factors (dust, humidity, vibration)
Space constraints and mounting options
Noise limitations for end-user applications
Cost vs. performance trade-offs
Reliability needs (e.g., industrial vs. consumer use)

8. Industry Trends

Emerging developments include:

Miniaturization for 5G and IoT devices
Smart thermal systems with IoT-enabled sensors
Advanced materials (graphene, vapor chambers)
Energy-efficient fans with BLDC motors
AI-driven thermal management algorithms
Increased adoption of liquid cooling in high-power applications