HARDWARE / PRODUCTUpdated 24 Jul 2026

3U-16U Platforms

C3S LLC
3U-16U Platforms

A family of scalable CubeSat platforms ranging from 3U to 16U, designed for constellation missions focusing on Earth Observation and IoT applications.

Typed specifications38 values

Discloses 5 of 7 fields engineers filter by in this category (category median 3).

Mass
3.3 kg
3U platform, payload excluded · datasheet p.2
Envelope (L×W×H)
100 x 100 x 340.5
3U · datasheet p.2 100 x 100 x 366 3U PLUS (platform size depending on dispenser)
Power consumption
4.5 W
product page 20 W
Data interface
CAN
2 x CAN bus, cold-redundant pair; payload interface CAN 2.0B · datasheet p.2 LVDS M-LVDS; 2 x M-LVDS cold-redundant pair to payload
Operating temperature
-40–80 °C
except battery pack (0 °C...+50 °C) · datasheet p.2
Design lifetime
5 years
design lifetime in LEO · datasheet p.2
Form factor
3U
3U / 3U PLUS platform · datasheet p.1 16U from product name
Orbit
LEO
5-year design lifetime in LEO · datasheet p.2
Max payload mass
4.7 kg
max · 3U, up to, depending on deployer/launcher · datasheet p.3
Payload volume, U
1.45–1.65 U
3U PLUS, depending on payload positioning (Units = Litres) · datasheet p.3 1.25–1.4 U 3U, depending on payload positioning (Units = Litres)
Payload envelope (L × W × H)
172 x 94 x 94
3U PLUS, dimensions within Z-frame; can be extended with up t… · datasheet p.3 146.5 x 94 x 94 3U, dimensions within Z-frame; can be extended with up to 150…
Power available to payload
35 W
peak, 3U (can be exceeded as an impulse for <<1 s) · datasheet p.3 20 W max · 3U, average power during 1 orbit, up to, mission dependent; c…
Regulated voltages for the payload
3.3 V
power bus · datasheet p.2 5 V power bus
Unregulated bus for the payload
9.9–12.6 V
power bus 9.9 V - 12.6 V · datasheet p.2
Onboard storage for payload data
16 GB
OBC mass storage capacity, eMMC (plus 16 MByte MRAM, radiatio… · datasheet p.2
Battery capacity
65 Wh
100% SOC · datasheet p.2 58 Wh 90% SOC
Pointing accuracy
2 °
pointing accuracy · datasheet p.3
Attitude knowledge
0.2 °
knowledge accuracy · datasheet p.3
Payload data downlink rate
150 kbps
max · UHF 399-401 MHz, downlink symbol rate 5-150 kbps (uplink 1.25… · datasheet p.3
Radio band
UHF
TX/RX 399-401 MHz, professional band, max transmit power 30 dBm · datasheet p.2
Subsystems included
battery
58 Wh / 65 Wh (90% / 100% SOC) · datasheet p.2 UHF or VHF radio COM TX/RX 399-401 MHz, cold/hot redundancy  |  ADCS knowledge accuracy 0.2°, pointing accuracy 2°  |  OBC on-board computer, 32bit ARM Cortex-M7 up to 300 MHz  |  EPS power buses 3.3 V, 5.0 V, 9.9 V - 12.6 V  +1
Connector
Rigid backplane with nano-D and micro-D connectors (Micro-D: MIL-DTL-83513, Nano-D: MIL-DTL-32139)
subsystem interconnection · datasheet p.2
Flight heritage
Flight heritage acquired in 2021 with the launch of RadCube
datasheet p.1
Form factor, U (number)
3 U
3U · datasheet p.2

Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.

As published by the supplier11 lines, in the manufacturer's own wording
Dimensions
100 x 100 x 340.5 mm (366 mm for 3U Plus)
Mass (bus only)
3.3 kg
Battery capacity
58 Wh (90% SOC)
Platform avg power
4.5 W
Platform peak power
20 W
Payload volume
1.25-1.4 U
Payload avg power
up to 20 W
Communications
399-401 MHz, OOK/FSK/GFSK, up to 150 kbps
Pointing accuracy
2 deg
Design lifetime
5 years (LEO)
OBC
ARM Cortex-M7, 300 MHz

About

C3S offers a range of scalable CubeSat platforms from 3U to 16U, specifically developed for constellation purposes with a focus on Earth Observation and IoT. These platforms provide tailored space and technology to accommodate payloads of various sizes, supporting diverse applications such as crop growth monitoring, disaster damage mitigation, and in-orbit demonstration (IOD) demands. A key strength across all platform sizes is the meticulous attention paid to thermal design during development. The structures are optimized for high dissipation density and thermo-elasticity, benefiting both the payload and the platform. The unique radiator design allows for unparalleled freedom in payload dissipation and offers unprecedentedly high payload power availability. The 6U, 12U, and 16U buses also provide great flexibility regarding the shape and positioning of the payload.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: c3s.hu ↗

The rest of the range from C3S LLC

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Payloads & Instruments 1