[Dr_C2]

There has been reference on this forum and slotforum of a new version of the C7005 retrofit SSD decoder. The new version can be identified by the white marking “11/2022”. It can also be identified by the absence of the silver cylindrical component (a 100uF electrolytic capacitor). The latter makes this a very compact retrofit SSD decoder solution.

The photo shows the top side of the decoder - including a decoder with a JST ZH 1.5mm pitch lighting socket fitted.

     

Key technical details:
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1/ Microcontroller:
16F1503 (same as C8515 rev H)

2/ Motor MOSFET:
DMN3404L
Marking “34N”
Max current* =5.8A at Vgs=10V
and 5.2A at Vg=ls=4.5V

3/ Brake MOSFET:
DMP3098L
Marking “DMB”
Max current* = -3.8A at Vgs=-10V

* when operating at 25 degrees C

4/ Four Schottky diodes as full bridge rectifier.
Labelled “SS34”
Each has a 3A max current limit giving a total capability of 6A for SSD AC drive packets.

5/ 100uF electrolytic capacitor replaced with six parallel wired MLCC (very low profile)

6/ head and tail lighting circuits which are npn transistor buffered.

Assessment:
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The C7005 rev 22/2022 has a similar footprint to the older C7005 and has a significantly reduced thickness profile due to the elimination of the electrolytic capacitor.

The new C7005 has a motor/brake current limit of circa 5A/3A (i.e. very similar to the C8515 rev H) so should be compatible with higher torque motors. It also has lighting circuits as per the C8515 rev H and so represents an excellent retrofit decoder for both F1 (due to its small dimensions) and saloon/GT cars (due to the lighting circuits).

Overall, an excellent upgrade to the C7005.