LD42 Module Terminal Locations
Because the LD42 modules currently do not have numerical characters marked on the cases, it is helpful to
have a copy of the outline drawing and circuit schematic on hand for reference for those that are not familiar
with the terminal locations.
Numerical Character
1
2
3
4
5
Terminal
AK
K
A
K1
G1
Location
Top of Module, Terminal Extends Past the Baseplate
Top of Module, Middle Terminal
Top of Module, Terminal Nearest to the Gate Pins
Side of Module, Left Side Socket, Top Terminal
Side of Module, Left Side Socket, Bottom Terminal
Module Lead Kits
Powerex offers module lead kits that simplify and assist with the proper connections to the corresponding
terminal locations on the modules. The lead kits feature keyed plastic housings which limit the connection to
one particular device in the module thus ensuring the correct orientation for the gate and cathode terminal
connections.
For the SCR/Diode LD42 module, Powerex recommends the LEAD KIT #NL. As shown in the diagram below,
the following connections would be made to the LEAD KIT #NL for use with the SCR/Diode LD42 module.
Numerical Connector
4
5
Terminal
K1
G1
Control Lead Set from Diagram
1
1
Wire
RED
YELLOW
Cathode and Gate Lead Kits
Control Lead Set #1
Control Lead Set #2
1.
2.
3.
WIRE COMPOSITION:
AWG 22, Tinned Copper Stranded Wire with ETEF Insulation Rated at 125ºC
LEAD COLOR:
Red (Cathode) and Yellow (Gate). Red Lead is Positioned next to Key on Black Polarized Housing
RECEPTACLES:
Female Terminal with Locking Tab fits .11 x .03 in. Blades.
Module
Lead Kit to Order
#NK
#NL
#NM
Description
Lead Set 1 & Lead Set 2 - One Each / Module
Lead Set 1 - One / Module
Lead Set 2 - One / Module
LD43, ND43, CD63, PD43 (Full Control)
LD42, LS43, ND42, CD62 (Half Control)
LD47, ND47, CD67, PS43 (Half Control)
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