Thyristors (and modules) price difference ?

[Hatimoooo]

Hello everybody.
I'm looking for a thyristor/module for a three phase half controlled bridge
I looked in a bunch of compagnies and packages, and I really can't figure out the cause of the HUGE price difference between them.
Here are some examples

3 phase half controlled bridge : 33 Euros (POWERSEM)
https://www.powersem.net/Three_Phase_Bridges/Standard_Diodes/Baseline/PSDH%2070.pdf

Diode Thyristor module : 30 Euros (SEMIKRON)
**broken link removed**

Thyristor: 7 Euros (VISHAY)
**broken link removed**

PS:
VRRM and VDRM are not a problem
Average output current from the bridge : 55 Amps
RMS current per thyristor 42A

Thanks you so much for your help

 

[tpetar]

All of three products are different, and cannot be compared, its like frogs and grannies, at least from my point of view.

High Voltage Phase Control Thyristor, 40 A
TO-247AC
Single SCR

Three Phase Hallf Controlled Bridges PSDH70
.
.
.
.
.


Triacs, Thyristors, Diodes, IGBT,... in module package are often more expensive then single component, also there is various modules with various component connection inside....

 

[Hatimoooo]

Hello !
First thank you for your answer.
I'm not comparing these modules as independent parts. I'm comparing them doing the same function which is as 3-ph half controlled rectifier.
That means that I compare PSDH70 with (03) of SKKH42 and (03) of Vishay's single SCR with diodes.
I think this clearifies what I'm looking for.

Thanks

 

[Hatimoooo]

Little update.
Please I need answers! Thank you