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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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Dynapath Systems 501-03883-01 CMOS Dual Bus Memory Board

$299.99 USD

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✓ 30-day returns on every item — return policy

ConditionSurplus - Untested MPN501-03883-01 Stock #0226-00658

30-day returns on every item. Photos reflect the actual item’s current condition — see our return policy and condition guide.

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Used in Dynapath Delta series CNC control racks, the 501-03883-01 is a CMOS Dual Bus Memory Board manufactured under the Bendix/PTI era of Dynapath Systems. The board carries secondary assembly number 502-03093-41, visible on the PCB label, and board assembly prefix 503, with serial number A20415 printed on the bottom edge barcode label. The memory array is populated with Harris Semiconductor HM6264LP-15 CMOS SRAM ICs across 24 or more positions, organized in a dual-bus architecture. An onboard Tadiran TL-5135 3.6V lithium inorganic battery provides data retention for stored CNC programs and parameters when the control is powered down. Dual supply rails VCCA and VCCB are designated at connector positions J3-1 and J3-2 respectively, as marked on the silkscreen. A write-protect switch is present and labeled on the board. Sub-assembly sticker references include 502-70172-00, 502-70174-00, and 502-70196-00. Gold-plated edge connectors on both sides are consistent with the ISA-format bus interface used across the Dynapath Delta control rack series. This board is the revised -01 variant of the 501-03883 assembly and is directly applicable to legacy Dynapath or Bendix-branded CNC machining centers utilizing the original 503-series ISA card rack architecture.

Stock # 0226-658

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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.