Service Module

Assembly

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Unpressurized section carrying the main propulsion, RCS thrusters, propellant tanks, and batteries.

Direct parts	7
Total parts	239
Used in	1 assembly
Class	Assembly

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Unpressurized section carrying the main propulsion, RCS thrusters, propellant tanks, and batteries. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Service Module parts and their functions

7 top-level parts · 239 parts in total · full bill of materials below

Service Module parts diagram: 1 main engine, 2 RCS thruster, 3 propellant tank, 4 helium pressurant tank, 5 propellant valve set, 6 battery pack, 7 service module structure. 239 parts in 7 top-level items. — Service Module parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Main Engine	1×	Orbit raising and deorbit
2	RCS Thruster	24×	Attitude and translation control
3	Propellant Tank	4×	MMH + NTO tanks
4	Helium Pressurant Tank	2×	High-pressure helium
5	Propellant Valve Set	1×	Isolation and latch valves
6	Battery Pack 5 parts	2×	Li-ion eclipse power
7	Service Module Structure	1×	Truss and equipment panels

3D model

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Build & assembly graph

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Bill of materials for Service Module

7 top-level lines · 12 rows shown · 239 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Main Engine	cargo-spacecraft-main-engine	1×	1	·	part
2	RCS Thruster	cargo-spacecraft-rcs-thruster	24×	24	·	part
3	Propellant Tank	cargo-spacecraft-propellant-tank	4×	4	·	part
4	Helium Pressurant Tank	cargo-spacecraft-pressurant-tank	2×	2	·	part
5	Propellant Valve Set	cargo-spacecraft-propellant-valve-set	1×	1	·	part
6	Battery Pack 5 parts	cargo-spacecraft-battery-pack	2×	2	103	assembly
6.1	Li-ion Cell, 18650	li-cell-18650	96×	192	·	part
6.2	BMS Board	bms-board	1×	2	·	part
6.3	Battery Enclosure	cargo-spacecraft-battery-enclosure	1×	2	·	part
6.4	Thermal Fuse	thermal-fuse	4×	8	·	part
6.5	Wire Bundle	wire-bundle	1×	2	·	part
7	Service Module Structure	cargo-spacecraft-sm-structure	1×	1	·	part

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Where the service module is used

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

Space Systems 1 Cargo Resupply Spacecraft

Used in 1 assembly

Cargo Resupply Spacecraft

Sourcing: possible vendors

Browse the supplier directory → 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

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics 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