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Discussion History

Power Distribution Module

Assembly

DC/DC converters stepping 28 V ISS bus to 12 V, 5 V, and 3.3 V for subsystems. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Power Distribution Module parts and their functions

6 top-level parts · 9 parts in total · full bill of materials below
Power Distribution Module parts diagram: 1 DC/DC converter 28V→12V, 2 DC/DC converter 12V→5V, 3 DC/DC converter 12V→3.3V, 4 power bus distribution board, 5 thermal fuse, 6 connector. 9 parts in 6 assemblies.
Power Distribution Module parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 DC/DC Converter 28V→12V DC/DC converter 28 V → 12 V, 20 A continuous
2 DC/DC Converter 12V→5V DC/DC converter 12 V → 5 V, 10 A continuous
3 DC/DC Converter 12V→3.3V DC/DC converter 12 V → 3.3 V, 5 A continuous
4 Power Bus Distribution Board PCB with bus bars and current limiting
5 Thermal Fuse Thermal disconnect for overcurrent protection
6 Connector Mil-spec circular connectors to ISS

3D model

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Build & assembly graph

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Bill of materials for Power Distribution Module

6 top-level lines · 6 rows shown · 9 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 DC/DC Converter 28V→12V space-pgc-dcdc-28v-12v 1 · part
2 DC/DC Converter 12V→5V space-pgc-dcdc-12v-5v 1 · part
3 DC/DC Converter 12V→3.3V space-pgc-dcdc-12v-3v3 1 · part
4 Power Bus Distribution Board space-pgc-distribution-board 1 · part
5 Thermal Fuse thermal-fuse 2 · part
6 Connector connector 3 · part

Where the power distribution module is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Sourcing: possible vendors

Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗
Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
flex.com ↗ Singapore Electronics contract mfg 1,000 pcs 6–10 wks
dixoninfo.com ↗ Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
bydelectronic.com ↗ Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗
Singapore Electronics contract mfg 1,000 pcs 6–10 wks