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Terminations for Pulsed Power
T Series 'E' Type
Pulsed power applications present a unique set of thermal problems. Frequent cycling of power can cause materials to expand rapidly, sometimes with destructive effects.

By closely matching the Coefficient of Thermal Expansion (CTE) of adjoining materials, catastophic failures can be eliminated.
Also see:
Resistors for Pulsed Power
Attenuators for Pulsed Power
Click on link for available Data Sheet.  For more options, please contact us with your requirement.

(Click on column header to sort)
To minimize CTE mismatch and increase thermal conductivity, a Gold-Germanium eutectic is used to bond the BeO to the flange. To further minimize CTE mismatch, a Copper-Tungsten flange is used.

The Gold-Germanium layer is chemically compatible with the Gold plated ajoining layers, and no embittling metallics will form. The Gold matrix exhibits outstanding ductility, corrosion resistance, low diffusivity and low toxicity, as opposed to lead.

Below are Barry Industries' Copper Tungsten flanged terminations. Engineers are welcome to 
contact us and we will design a Copper Tungsten flanged termination to your exact specifications.
Specifications:

Resistive Element:

Substrate:

Mounting Flange

Leads:
Proprietary Thick Film

BeO

Copper Tungsten

Gold Plated Copper (.005" thick)
Cycling Test Details
• Applied Power: 250W
• Cycle: 10 seconds On, 10 seconds Off

Cycling Test Results
• All Copper flanged resistors failed after 600 cycles
• All Copper-Tungsten flanged resistors still operational after 500,000 cycles
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Below are some of Barry Industries' Standard High Power Flanged Resistors. Engineers are welcome to contact us and we will design a Custom High Power Flanged Resistor to your exact specifications.

Customer defined testing is available for all Barry devices.
Left Configuration
Right Configuration
Center Configuration
2 Hole Configuration
CW Power
(Max)
(W)
Configuration
Ceramic Frequency
(Max)
(GHz)
Return Loss
(Min)
(dB)
A
Length
B
Width
C
Hole to Hole or Hole
to Edge
D
Lead Width
E
From Bottom Face of
Lead
F (Max)
Height
G
Hole Diameter
RoHS
Data Sheet
60
RF Termination Right
BeO 6 17 0.515" 0.250" 0.125" 0.060" 0.105" 0.140" 0.130"
(1X)
Yes
60
RF Termination Left
BeO 6 17 0.515" 0.250" 0.125" 0.060" 0.105" 0.140" 0.130"
(1X)
Yes
100
RF Termination Right
BeO 4 20 0.560" 0.375" 0.155" 0.040" 0.105" 0.140" 0.161"
(1X)
Yes
100
RF Termination Left
BeO 4 20 0.560" 0.375" 0.155" 0.040" 0.105" 0.140" 0.161"
(1X)
Yes
150
RF Termination 2 Hole
BeO 2.5 20 0.800" 0.230" 0.580" 0.040" 0.105" 0.140" 0.130"
(2X)
Yes
200
RF Termination 2 Hole
BeO 2 20 0.800" 0.230" 0.580" 0.040" 0.105" 0.140" 0.130"
(2X)
Yes
250
RF Termination 2 Hole
BeO 4 18 0.975" 0.375" 0.725" 0.120" 0.105" 0.140" 0.130"
(2X)
Yes
250
RF Termination 2 Hole
BeO 4 16 0.975" 0.375" 0.725" 0.040" 0.105" 0.140" 0.130"
(2X)
Yes
350
RF Termination 2 Hole
BeO 1 26.5 1.100" 0.500" 0.800" 0.060" 0.105" 0.140" 0.170"
(2X)
Yes
500
RF Termination 2 Hole
BeO 1 21 1.100" 0.500" 0.800" 0.060" 0.105" 0.140" 0.170"
(2X)
Yes
800
RF Termination 2 Hole
BeO 0.1 17 1.900" 1.040" 1.550" 0.250" 0.190" 0.250" 0.170"
(4X)
Yes
800
RF Termination 2 Hole
BeO 1 20 1.900" 1.040" 1.550" 0.250" 0.190" 0.250" 0.170"
(4X)
Yes
For more information regarding the benefits of using Copper-Tungsten flanged resistors high thermal cycle environments click here