303 Pro Series CompactFlash

The Cactus Technologies 303 Pro Series Industrial Grade Compact Flash Memory Card is a SLC NAND based solid-state flash memory device that complies with the CompactFlash Association ATA standard in the CF Type I form factor. It is available in capacities from 128MBytes to 32GBytes and intended for OEM applications needing a high endurance part with very good performance or requiring the optional full extended temperature range of -45C to +90C OR the Pro features: Special Write Protect, ATA Security, DoD and Military Purge, Physical Write Protect Switch and Lock Features.

The 303 Pro Series Compact Flash comes with full BOM Control, Long Life Cycles and is built with Stringent Quality Processes. As with our other Industrial Grade products, Cactus Technologies incorporates Industrial Grade ECC, Wear Leveling, Write Abort Protection Circuitry and Defect Management into the 303 Pro Series CF, making it the most reliable device available. Custom Labeling, Custom ID and Preloaded Content are available based on customer requirements (see Custom Features). For low power applications, a 303 Series Compact Flash can be configured to have the same power as the 203 Series.


128MB – 32GB
Memory type
Endurance cycles
>2 Million
MTBF (Hours)
4 Million
5 Years
Standard temperature
0°C to 70°C
Extended temperature
-45°C to 90°C
Sequential read
Sequential write
Up to Mode 4
Pro feature set
SMART feature


  • Industry Standard CF Type 1 Form Factor
  • Card Capacities 128MB to 32GB
  • All 303 Series Features Plus:
    • ATA Security Feature Set
      • Set Password, Unlock, Erase, Disable Password, etc.
    • CTPurge
      • Single Command – Full Card Erase
      • USA-AF AFSSI 5020 Spec
      • USA Navy NAVSO P-5239-26 Spec
      • DoD 5220.22-M Spec
      • NSA Manual 130-2 Spec
      • NSA 9-12 Spec
      • USA-Army 380-19 Spec
      • NISPOM SUP Chap.8, Sect.8-501 Spec
      • IREC (IRIG) 106 Spec
    • CTLock
      • Lock Card to Host System
    • Write Protect: Multiple Methods (hardware/software)

Cactus Part Numbers

The 303 Pro Series CompactFlash matches the these part numbers. If you are interested in any of these part numbers, please Contact a Cactus Expert.

  • KADPT-CF02
  • KC128MF-303-P1
  • KC128MF-303-WP1
  • KC128MFI-303-P1
  • KC128MFI-303-WP1
  • KC128MR-303-P1
  • KC128MR-303-WP1
  • KC128MRI-303-P1
  • KC128MRI-303-WP1
  • KC16GFIT-303-P1
  • KC16GFIT-303-WP1
  • KC16GFT-303-P1
  • KC16GFT-303-WP1
  • KC16GRIT-303-P1
  • KC16GRIT-303-WP1
  • KC16GRT-303-P1
  • KC16GRT-303-WP1
  • KC1GF-303-P1
  • KC1GF-303-WP1
  • KC1GFI-303-P1
  • KC1GFI-303-WP1
  • KC1GR-303-P1
  • KC1GR-303-WP1
  • KC1GRI-303-P1
  • KC1GRI-303-WP1
  • KC256MF-303-P1
  • KC256MF-303-WP1
  • KC256MFI-303-P1
  • KC256MFI-303-WP1
  • KC256MR-303-P1
  • KC256MR-303-WP1
  • KC256MRI-303-P1
  • KC256MRI-303-WP1
  • KC2GF-303-P1
  • KC2GF-303-WP1
  • KC2GFI-303-P1
  • KC2GFI-303-WP1
  • KC2GR-303-P1
  • KC2GR-303-WP1
  • KC2GRI-303-P1
  • KC2GRI-303-WP1
  • KC32GFIT-303-P1
  • KC32GFT-303-P1
  • KC32GRIT-303-P1
  • KC32GRT-303-P1
  • KC4GF-303-P1
  • KC4GF-303-WP1
  • KC4GFI-303-P1
  • KC4GFI-303-WP1
  • KC4GR-303-P1
  • KC4GR-303-WP1
  • KC4GRI-303-P1
  • KC4GRI-303-WP1
  • KC512MF-303-P1
  • KC512MF-303-WP1
  • KC512MFI-303-P1
  • KC512MFI-303-WP1
  • KC512MR-303-P1
  • KC512MR-303-WP1
  • KC512MRI-303-P1
  • KC512MRI-303-WP1
  • KC8GF-303-P1
  • KC8GF-303-WP1
  • KC8GFI-303-P1
  • KC8GFI-303-WP1
  • KC8GR-303-P1
  • KC8GR-303-WP1
  • KC8GRI-303-P1
  • KC8GRI-303-WP1

303 Pro Series Physical Write Protect Switch Option

Cactus 303 Series Industrial CF cards are available with a Physical Write Protect Switch (-WP1 suffix) option.

When the switch on the bottom right rail of the Industrial Grade Compact Flash is in the disabled postion the card can be read and written to normally. However, when the write protect switch is enabled, the card can only be read - any writes are not processed.

More details are in the 303 Pro Industrial Compact Flash product manual or feel free to contact a Cactus Expert.

Compact Flash to PC Card Adapter

Cactus has a Compact Flash to PC Card adapter for applications using a Compact Flash card in the larger sized PC Card form factor slots.

The CF to PC Card adapter converts the 50-pin Compact Flash interface to the 68-pin PC Card (previously known as PCMCIA) standard. Once a CompactFlash card is in the adapter, it meets the form, fit and function of a PC Memory Card.

This adapter is meant to be used with Cactus Technologies Compact Flash cards and can be used with a CompactFlash card in volume production systems if required.

Please contact Cactus if you need specific details regarding this adapter.

Compact Flash Extender Card for Development

To ease the access to the CompactFlash card signals during an OEM's design, Cactus created the CF Extender Card.

The CF Extender Card plugs into the standard CF slot and provides a slot for the CF card at the other end. On the PCB the signals are labeled so that they can be probed as necessary during development.

This is only meant for development of Cactus CF cards and is not available as a production product. Please contact Cactus if you need specific details regarding this adapter.