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Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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PTI Electronics CMOS Dual Bus Memory Board 501-03883-00

$399.00 USD

Sale Sold out

ConditionSurplus - Untested MPN501-03883 Stock #0226-00640

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 5.0 lbs

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A CMOS Dual Bus Memory board from PTI Electronics, this card carries part number 501-03883-00 with secondary board number 502-03093-00 visible on the label. The date code reads 22-85, indicating manufacture in 1985. The board is populated with Fujitsu MB8416A-15L 2Kx8 static CMOS RAM integrated circuits across multiple IC positions, with date codes ranging from 8433 to 8449, consistent with the 1984 to 1985 production timeframe. Logic support ICs visible in the lower section of the board include SN74LS640N, SN74LS340N, SN74LS273N, SN74S283N, SN74LS240N, SN74LS244N, SN74LS04, and related 74-series logic devices. The board features gold-plated card edge connectors on three sides, consistent with a multi-bus or proprietary backplane interface used in industrial CNC or process control systems of the period. Silkscreen labels identify connectors as CONN A1, CONN P1, and EXPANSION BUS. A write protect switch labeled SW1 is present, with ON and OFF positions marked. The board also carries internal sub-assembly references 502-70144-00, 502-70145-00, and 502-70146-00 visible on installed daughter components. Serial number 465004 and lot reference RB 1/84 are printed on the board edge. The board is stored in its original anti-static protective bag. Compatible system application is not confirmed from photos alone.

Stock # 0226-640

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Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.