Heat Sink Clamps | SCR Clamps

ABOUT HEAT SINK CLAMPS - SCR CLAMPS

scr clamp dual sided heatsink assembly
Our precision SCR clamps and heatsink assemblies are for high-power semiconductors creating a semiconductor assembly. These standard heat sink clamps are designed for a wide array of applications in the commercial and military markets. The key aspect when mounting high-power semiconductors is to use a heat sink clamp capable of exerting the range of minimum and maximum clamping force needed. Typically, you used the median force required when choosing your SCR clamp. Our heat sink clamps are pre-calibrated to create a semiconductor assembly with built-in pressure indicators to eliminate the incorrect force applied. An SCR clamp should sustain the pressure for an extended time and temperature range.
semiconductor assembly
The force applied by the high-power semiconductor clamp minimizes the electrical and thermal resistance. It guarantees the semiconductor is in intimate contact with the heatsink and bus bars, allowing the semiconductor to perform as specified. Our SCR clamps and high-power semiconductor clamp designs meet the specifications of the semiconductor requirement to provide the maximum performance from these devices.

THREE HIGH-POWER SEMICONDUCTOR CLAMPS – CREATE A SEMICONDUCTOR ASSEMBLY

  • Dual Sided Cooling
  • Single Side Cooling
  • Dual Sided Cooling Extended Range
scr clamp single bolt
scr clamp dual sided two bolt
heatsink clamps

WHY USE SEMICONDUCTOR CLAMPS?

Power semiconductors require precise mechanical loading to achieve optimal electrical and thermal performance. Our power semiconductor mounting hardware is engineered to provide controlled force distribution while simplifying assembly and maintenance. Benefits include:
  • Controlled and repeatable clamping force
  • Balanced pressure distribution across semiconductor devices
  • Reduced assembly variability
  • Improved thermal performance
  • Faster assembly and maintenance
  • Longer device life
  • Support for custom heatsink and busbar configurations
Whether you are building a prototype, a low-volume production run, or a large-scale manufacturing program, our SCR mounting systems help ensure consistent results.

SIMPLIFIED ASSEMBLY OF PRESS-PACK SEMICONDUCTOR DEVICES

Hill Technical Sales press-pack diode clamps and SCR clamp systems are designed to streamline assembly while improving quality and repeatability. A typical press-pack semiconductor assembly consists of:
  • Precision-machined heatsinks
  • Press-pack diodes or SCRs
  • Semiconductor clamps
  • Spring-loaded hardware
  • Busbars and electrical interconnects
  • Thermal interface materials
The clamp system maintains proper loading across the semiconductor device while accommodating thermal expansion and operational stresses. Because assembly consistency is critical, our clamp solutions help reduce variation between units and minimize the risk of improper loading during installation.

IMPROVED RELIABILITY FOR HIGH-CURRENT APPLICATIONS

The performance of a high-current rectifier assembly depends on more than the semiconductor device itself. Surface finish, alignment, thermal interfaces, and clamping force all play a significant role in overall reliability. A properly designed semiconductor clamp system helps:
  • Maintain uniform contact pressure
  • Minimize thermal resistance
  • Prevent localized hot spots
  • Improve current sharing
  • Reduce mechanical stress on the semiconductor
  • Extend device life
  • Improve field reliability
For applications operating continuously under high current and elevated temperatures, proper clamping force is one of the most important factors affecting long-term performance.

DESIGNED FOR HIGH-CURRENT POWER ELECTRONICS

Our clamp systems support a wide range of high-current power electronics applications, including:
  • Industrial rectifiers
  • Battery backup systems
  • Generator control systems
  • DC power supplies
  • Electroplating equipment
  • Motor drives
  • Renewable energy converters
  • Welding equipment
  • High-current SCR assemblies
  • Custom diode clamp assemblies
Many of these applications utilize large press-pack semiconductor devices that require carefully controlled mounting pressure to achieve maximum performance and service life.

PRECISION ALIGNMENT AND THERMAL PERFORMANCE

Proper alignment is essential when assembling high-power semiconductor systems. Misalignment can lead to uneven loading, increased thermal resistance, and premature device failure. Our solutions support:
  • Precision alignment of semiconductor devices
  • Consistent pressure distribution
  • Controlled torque procedures
  • Spring-loaded clamping systems
  • High-current busbar integration
  • Optimized thermal management
By maintaining consistent pressure across the device interface, our SCR clamps and press-pack diode clamps help maximize heat transfer between the semiconductor and heatsink.

COMPLETE SEMICONDUCTOR ASSEMBLY SUPPORT

In addition to supplying semiconductor clamps, Hill Technical Sales can assist with complete high-current rectifier assemblies and custom power electronic systems. Our capabilities include:
  • Semiconductor clamp selection
  • SCR and diode sourcing
  • Heatsink design and integration
  • Laminated and solid busbar integration
  • Thermal management solutions
  • Custom power assembly development
  • Prototype support
  • Production manufacturing support
Whether you need individual power semiconductor mounting hardware or a fully integrated assembly, our engineering team can help identify the best solution for your application.

APPLICATIONS

Our semiconductor clamp solutions are used in:
  • Utility power systems
  • Industrial power conversion
  • Battery energy storage systems
  • Generator backup systems
  • Transportation power electronics
  • Renewable energy systems
  • Research laboratories
  • Heavy industrial equipment

BENEFITS AT A GLANCE

  • Simplifies assembly of press-pack semiconductor devices
  • Provides repeatable clamping force
  • Improves thermal performance
  • Increases assembly consistency
  • Supports demanding high-current power electronics applications
  • Available as individual clamps or complete diode clamp assemblies
  • Compatible with custom heatsinks and busbars
  • Engineering support available for custom designs
If you are designing a rectifier, SCR stack, or custom power conversion system, contact Hill Technical Sales to discuss your requirements for semiconductor clamps, SCR mounting systems, and complete press-pack semiconductor assemblies.

WATCH OUR PRE-ASSEMBLY IN ACTION



Assembly can be a hassle, but luckily, we have a solution! See the above video to find out how our pre-calibrated clamping assembly process works.