AT25DF256-SSHNGU-B Equivalent & Substitute Parts

Part Overview

The AT25DF256-SSHNGU-B is a 256Kbit Serial Peripheral Interface (SPI) FLASH memory IC manufactured by Renesas Electronics Corporation. This non-volatile memory device operates at 104 MHz with a supply voltage range of 1.65V to 3.6V and is housed in an 8-SOIC surface mount package. The part is currently in active production status and maintains full RoHS3 compliance. Substitute parts are identified when packaging format differs while maintaining identical electrical and mechanical specifications, enabling procurement flexibility without functional compromise.

Substiute Parts

AT25DF256-SSHNGU-B

Renesas Electronics CorporationIn Stock: 647AT25DF256-SSHNGU-B Datasheet

Current PartRFQ

AT25DF256-SSHN-T

Renesas Electronics CorporationIn Stock: 8169AT25DF256-SSHN-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT25DF256-SSHNGU-B is determined by strict equivalence across all electrical and mechanical parameters. The primary differentiator between the main part and its substitute is the packaging format: the main part is supplied in Tube packaging, while the substitute part is supplied in Tape & Reel (TR) format. Both parts share identical specifications for memory capacity, interface protocol, clock frequency, voltage supply range, operating temperature range, package type (8-SOIC), and compliance certifications. The substitution is valid because the physical component dimensions and electrical characteristics remain unchanged; only the delivery and handling format differs.

Key parameters determining substitution validity:

• Memory Size: 256Kbit
• Memory Interface: SPI
• Clock Frequency: 104 MHz
• Voltage Supply: 1.65V ~ 3.6V
• Operating Temperature: -40°C ~ 85°C
• Package Type: 8-SOIC
• RoHS3 Compliance

Parameter Comparison

Engineering Selection Recommendations

Both AT25DF256-SSHNGU-B and AT25DF256-SSHN-T are active production parts from Renesas Electronics Corporation with identical electrical and mechanical specifications. Selection between these parts should be based on procurement and assembly requirements. The Tube packaging format (AT25DF256-SSHNGU-B) is suitable for lower-volume applications or manual assembly processes. The Tape & Reel format (AT25DF256-SSHN-T) is optimized for high-volume automated assembly operations and offers greater inventory availability. Both parts maintain full RoHS3 compliance and REACH unaffected status, ensuring regulatory compliance across all applications. The choice between these substitutes does not affect circuit design, PCB layout, or functional performance.

Frequently Asked Questions (FAQ)

Q: Can AT25DF256-SSHN-T be used as a direct replacement for AT25DF256-SSHNGU-B in production?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tube versus Tape & Reel). No circuit modifications or PCB redesign is required.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging supplies individual components in a plastic tube, suitable for manual handling and lower-volume assembly. Tape & Reel packaging supplies components on a continuous reel within a carrier tape, optimized for automated pick-and-place assembly equipment. Both formats contain the same physical component.

Q: Are there any compatibility issues when switching between these part numbers?

A: No compatibility issues exist. The 8-SOIC package dimensions, pin configuration, and electrical characteristics are identical. Both parts are suitable for the same PCB footprint and assembly process.

Q: Do both parts meet the same compliance standards?

A: Yes. Both AT25DF256-SSHNGU-B and AT25DF256-SSHN-T are RoHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Q: Which part should be selected for high-volume manufacturing?

A: AT25DF256-SSHN-T (Tape & Reel format) is recommended for high-volume production due to compatibility with automated assembly equipment and higher inventory availability.