# OBC
*component . products*

OBC is Dragonfly's onboard computer product for low Earth orbit microsatellites.

## Specifications
- **manufacturer**: dragonfly
- **deployment context**: orbital
- **entity type**: component
- **last verified date**: 2026-05-28
- **verified by**: operator
- **claim status**: unclaimed
- **subtype**: obc-cdh
- **provider**: dragonfly
- **attributes**: {"kind":"component","product_status":null,"manufacturer":"dragonfly","description":"OBC is Dragonfly's onboard computer product for low Earth orbit microsatellites.","sensor":null,"bus":null,"ground_segment":null,"launcher":null,"analysis_service":null,"deployment_context":"orbital"}

## Editorial
OBC is Dragonfly Aerospace's high-reliability onboard computer with integrated AOCS interface and controller for LEO microsatellites.[^dragonfly-obc-page]

Dragonfly presents the OBC as flight-proven, ITAR-free, and TRL 9.[^dragonfly-obc-page][^dragonfly-components-overview]

The module uses a EuroCard 3U form factor, operates from -10 C to +50 C, measures 160 x 117 x 30.5 mm, and has a mass of 0.35 kg.[^dragonfly-obc-page]

Its power interface is a single 24-32 V input with 5 W consumption and 12 V, 5 V, and 3.3 V output supplies.[^dragonfly-obc-page]

The software environment includes Linux 4.14 for Xiphos Q7S, CCSDS TCTM, CCSDS File Delivery Protocol, direct command terminal, Lua scripts with systemd scheduling, satellite controller applications, and FDIR.[^dragonfly-obc-page]

The main processor set includes a dual-core ARM-A9 at 766 MHz, dual 256 MB SDRAM, dual 32 GB SD card, dual 128 MB flash, robust boot, data scrubbing, health monitoring, watchdog, RAM ECC, and in-flight reprogrammability.[^dragonfly-obc-page]

Main interfaces are 2x CAN, 2x SpaceWire, 14x RS422, 2x RS485, and DCL.[^dragonfly-obc-page]

The magnetic interface controller uses a hard 166 MHz 32-bit ARM Cortex-M3 FPGA with 12k LEs, 64 KB SDRAM, 256 KB flash, 2x CAN, 2x RS485, 3x 5 V H-bridge magnetorquer drivers, and 5x 0-5 V 12-bit ADC magnetometer inputs.[^dragonfly-obc-page]

## Sources
- [dragonfly-obc-page] | Dragonfly Aerospace OBC technical specification page | https://dragonflyaerospace.com/components/obc/ | tier=operator-datasheet | accessed=2026-05-28 | author=Dragonfly Aerospace
  Official product page with technical specification table; page labels a brochure download but no separate PDF href was exposed during this pass.
- [dragonfly-components-overview] | Dragonfly Aerospace satellite components overview | https://dragonflyaerospace.com/components/ | tier=operator-marketing | accessed=2026-05-28 | author=Dragonfly Aerospace
  Official components index cross-checking ITAR-free and TRL summary labels.

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Source: https://eo-atlas.org/products/component/dragonfly-obc
Maintainer: SpectraWorks B.V. (CC-BY 4.0)