AEROFLEX ACT-S512K32N-017P7EQ
- 16Mbit (512K x 32) high-speed static random access memory (SRAM)
- Radiation-hardened design for space and satellite applications
- 17ns access time for high-performance data processing
- Single 3.3V power supply operation
- Military-grade hermetic ceramic package
- Complies with MIL-STD-883 and MIL-PRF-38534 standards
- Total ionizing dose (TID) rating up to 300krad(Si)
- Single event upset (SEU) immunity with error correction capabilities
In space and satellite applications, reliable memory solutions are critical for storing and processing mission-critical data. The AEROFLEX ACT-S512K32N-017P7EQ is a radiation-hardened SRAM designed to meet the rigorous demands of aerospace and defense environments. With its 16Mbit capacity and 17ns access time, this memory device provides high-performance data storage for radar systems, electronic warfare platforms, and satellite communication payloads.
Built to military standards, this SRAM features a radiation-hardened design that ensures reliable operation in the presence of ionizing radiation. Its hermetic ceramic package provides protection against environmental contaminants and temperature extremes, making it suitable for use in both low-earth orbit and deep space missions. The single 3.3V power supply simplifies system integration while reducing power consumption in space-constrained applications.
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The AEROFLEX ACT-S512K32N-017P7EQ is the 17ns, MIL-PRF-38534-qualified, P7 PGA package variant of the ACT-S512K32 16Mbit CMOS SRAM Multichip Module family — the go-to high-reliability SRAM solution for defense radar, EW, and satellite memory subsystems requiring DESC SMD part number qualification and full −55°C to +125°C military temperature coverage. Understanding the part number is essential for procurement decisions.
Part Number Decode
| Field | Code | Meaning |
|---|---|---|
| Manufacturer | ACT | Aeroflex Circuit Technology |
| Memory Type | S | SRAM |
| Depth | 512K | 512K locations |
| Width | 32 | 32-bit wide |
| Pinout | N | Standard (none) |
| Access Time | 017 | 17 ns maximum |
| Package | P7 | 66-pin PGA, 1.09″sq, with shoulder |
| Temp Grade | E | Extended military (−55°C to +125°C) |
| Quality Level | Q | MIL-PRF-38534 compliant MCM |
Speed Grade and Package Selection Guide
Procurement engineers evaluating the ACT-S512K32N family for a specific platform should match access time to the processor bus cycle and package to board layout and reflow constraints. The table below covers the most commonly specified variants:
| Part Number | Access Time | Package | Dimensions | Quality |
|---|---|---|---|---|
| ACT-S512K32N-017P7EQ | 17 ns | P7 PGA | 1.09″×1.09″ | MIL-PRF-38534 |
| ACT-S512K32N-017P7Q | 17 ns | P7 PGA | 1.09″×1.09″ | MIL-PRF-38534 |
| ACT-S512K32N-020P7EQ | 20 ns | P7 PGA | 1.09″×1.09″ | MIL-PRF-38534 |
The P7 package (1.09″×1.09″) is the more compact PGA option versus P1 (1.38″×1.38″), offering a 37% smaller footprint while retaining the same hermetic ceramic lid seal and pin-through-hole mounting scheme. For surface-mount board designs, the F1 (1.56″sq CQFP), F2 (0.88″sq CQFP), and F18 (0.94″sq CQFP) package options carry the same die and electrical specifications.
Supply Chain and Qualification Assurance
The ACT-S512K32N-017P7EQ is manufactured by Aeroflex Circuit Technology (Cage Code 51863) in a MIL-PRF-38534-certified hybrid microcircuit facility, qualifying it for defense prime contractor BOM approval without additional screening. The released DESC SMD number 5962-94611 appears in the DLA qualified parts system, simplifying QPL compliance documentation for programs under MIL-SPEC procurement requirements. Our inventory is sourced from authorized channels with full lot traceability, certificates of conformance, date code records, and test documentation available per AS6081 anti-counterfeit requirements. For programs requiring radiation hardness assurance (RHA), consult Aeroflex for SEE and TID characterized variants.
FAQ
What does the P7 package code mean for the ACT-S512K32N-017P7EQ?
P7 designates the 66-pin hermetic ceramic PGA-Type package with shoulder, measuring 1.09″×1.09″×0.185″. It is the compact PGA option in the ACT-S512K32 family, versus the P1 variant at 1.38″×1.38″. Both use pin-through-hole mounting into a PGA socket or soldered directly to the PCB.
What is the difference between the EQ and Q suffix?
Q designates MIL-PRF-38534 compliant MCM screening. The E preceding Q specifies the extended military temperature grade (−55°C to +125°C). Parts without the E prefix but with Q may carry a different temperature grade designation. Always verify the temperature range in the procurement specification when ordering.
Can the 512K×32 configuration be changed in system?
Yes. The ACT-S512K32 is user-reconfigurable as 1M×16 or 2M×8 by controlling the chip enable (CE1–CE4) and write enable (WE1–WE4) signal routing. The factory configuration is 512K×32. Reconfiguration is implemented at the PCB interconnect level and does not require any device reprogramming.
What is DESC SMD 5962-94611 and why does it matter for procurement?
DESC SMD 5962-94611 is the Defense Electronics Supply Center Standard Military Drawing number released for the ACT-S512K32 family. A released SMD means the part is in the DLA qualified parts system, simplifying QPL compliance documentation and government program approval for programs with MIL-SPEC memory procurement requirements.
Why are internal decoupling capacitors important in the P7 package?
The four 512K×8 SRAM die switch simultaneously during bus transactions, generating high-frequency supply transients that can cause noise on shared power rails. Integrated decoupling capacitors within the MCM suppress these transients at their source, reducing the number and value of external bypass capacitors required on the PCB and improving signal integrity in high-speed radar and EW processor designs.
What radiation tolerance data is available for satellite and space applications?
The ACT-S512K32N family is designed for military and space applications. For satellite programs requiring specific SEE (Single Event Effect) immunity or TID (Total Ionizing Dose) tolerance data, contact Aeroflex directly for RHA-characterized lot documentation. The MIL-PRF-38534 screening qualification provides the baseline for space grade use, and RHA designators are available for specific program requirements.
