Accutek Microcircuit Corporation
Accutek Microcircuit Corporation was a U.S.-based electronic components and microcircuit manufacturer founded in 1986 by one of the originators of SIM and SIP DRAM memory modules.
Core business focus:
Accutek specialized in designing and manufacturing space-saving microelectronic modules and components for electronic printed circuit boards helping customers fit more functionality into smaller board areas.
What the company offered:
Memory modules
Resistor networks
Resistor networks and compact resistor assemblies.
Adapter modules
Contract manufacturing
Contract manufacturing services with flexible production runs from prototypes to larger volumes.
Manufacturing:
All production was performed at their facility in Newburyport, Massachusetts, with a focus on quality and rapid turnaround.
Market positioning:
The company marketed itself as a reliable supplier offering quality, service, and competitive pricing — serving a broad base from Fortune 500 manufacturers to fast-growing niche customers.
1. SRAM Modules (AK63xxxx + related)
These are Accutek’s core high-reliability modules (ZIP, SIM, DIP hybrids).
Low Density
- AK63216Z – 16K × 32
- AK63232W
- AK63232Z
Mid Density
- AK63264W
- AK63264AW
- AK63264BZ
- AK632128W
- AK632128AW
AK616256D – 256K × 16
- AK6364096S – 32K × 32 variant
- AK68512D (less common listing)
These modules are:
- Built from multiple SRAM dies
- Typically x32 architectures
- 8–45 ns speed range
- 2. DRAM Modules (AK48xxxx / AK58xxxx / AK59xxxx)
- 256K Density
- AK48256S / G
AK49256S
- AK59256S
- AK59256AS / AG
- 1M Density
- AK481024
- AK581024
- AK591024
- AK591024AS
AK5328192W
- AK5361024BW
- AK5362048BW
- Typically:
- Used in graphics / embedded systems
- 4. Early / Legacy SRAM & DRAM Hybrids
- AK414096S – 64K × 32 SRAM variant
- AK441024D – DRAM module family reference
High Density
- AK632256W
- AK632256AW
- AK63232Z
- AK632512W
- AK632512AW
- Very High Density
- AK6321024W
- AK6321024Z
- Additional / Extended SRAM
4M Density
- AK584096
- AK594096
- AK594096BS
Extended Density DRAM
- AK5816384
- AK5916384
- AK594096BS
Architecture:
x8 or x9 organization
SIMM / SIP modules
- Built from discrete DRAM IC arrays
- 3. Wide / High-Bit DRAM Modules (AK53xxxx / AK536xxxx)
These are less common but important for workstation / video systems.
- AK5321024BW
- AK5322048BW
- AK5324096W
2. Commercial Aviation (Avionics Maintenance)
Why they fit:
- Certified systems can’t be easily redesigned
- Must match original electrical + mechanical specs
Typical uses:
- Flight control computers
- Navigation systems
- Engine monitoring systems
Key point: replacement parts must be identical—not “equivalent.”
3. Industrial & Factory Automation
Why they fit:
- 1980s–2000s equipment still in operation
- Uses custom memory modules (SIP, ZIP, SIMM hybrids)
Typical uses:
- PLCs
- CNC machines
- Process control systems
- Robotics controllers
Downtime cost >> part cost → drives demand.
4. Legacy Computing & Workstations
Why they fit:
- Proprietary memory modules (not standard DIMMs)
- Often require x32 or parity configurations
Typical uses:
- Sun / SGI / HP workstations
- VMEbus systems
- Early servers
5. Telecommunications Infrastructure
Why they fit:
- Long-lived infrastructure (decades)
- Custom memory modules in switching systems
Typical uses:
- Central office switches
- Base station controllers
- Early networking hardware
6. Defense Naval & Maritime Systems
Why they fit:
- Harsh environment tolerance
- Systems stay in service for decades
Typical uses:
- Imaging systems (MRI, CT, ultrasound)
- Diagnostic equipment
- Patient monitoring systems
Why and When to Use
- These modules are valuable where:
- Obsolescence is the problem
- Redesign is not allowed or too expensive
- Exact electrical + mechanical match is required
- Reliability > cost
