Microchip Technology AT25320B
AT25320B variants from Microchip Technology
AT25320B Overview
What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.
AT25320B is a Microchip Technology order-code family — not a single orderable MPN. This page lists 2 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.
IC EEPROM 32KBIT SPI 20MHZ 8SOIC
Suffix examples in this family: SSHL-B, SSHL-T. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.
Example MPNs: AT25320B-SSHL-B, AT25320B-SSHL-T.
Key Features
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 2 distinct suffix patternsExamples: SSHL-B, SSHL-T. Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Microcontrollers — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 2 AT25320B part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|
| AT25320B-SSHL-B | IC EEPROM 32KBIT SPI 20MHZ 8SOIC | Microchip Technology | Active | Compliant | In Stock | |
| AT25320B-SSHL-T | IC EEPROM 32KBIT SPI 20MHZ 8SOIC | Microchip Technology | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on AT25320B map to package, grade, and reel options.
AT25320B uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.
Suffixes seen here: SSHL-B, SSHL-T.
Full MPN examples: AT25320B-SSHL-B, AT25320B-SSHL-T.
Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.
How to Choose the Right AT25320B Microcontrollers
Match the footprint first
Pull the exact package drawing for your MPN — base-number swaps fail most often at the footprint, not the schematic.
Electrical headroom
Compare voltage and current columns in the variant table. For AT25320B, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "AT25320B" — include the full suffix (e.g. SSHL-B, SSHL-T). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for AT25320B product family
Identity
Variant Parameters
Source AT25320B with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 2 ordering variants from Microchip Technology. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the AT25320B product family.