SST39SF040-45-4I-WHE-T Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip SST39SF040 is a 4 Mbit (512 KB) parallel NOR Flash memory with 45 ns access time and 5 V supply. It supports sector and full-chip erase with a 32-pin TSOP package, suitable for embedded firmware storage and BIOS applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 32
- Lifecycle
- ACTIVE
- Datasheet
- SST39SF040-45-4I-WHE-T Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SST39SF040-45-4I-WHE-T?
- 4 Mbit (512 KB) parallel NOR Flash storage
- Fast 45 ns read access time
- 5 V single-supply operation
- Sector erase (4 KB) and chip erase support
- 100,000 erase/write cycles endurance
- 32-pin TSOP package for compact PCB integration
- Data retention exceeding 100 years
What is SST39SF040-45-4I-WHE-T used for?
The SST39SF040 is widely used for BIOS firmware storage in embedded computing systems, industrial controllers, and legacy PC motherboards requiring reliable parallel NOR Flash. Its 45 ns fast access time enables direct XIP (execute in place) operation in 5 V processor systems. The 32-pin TSOP package supports high-density PCB layouts in networking and communications equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SST39SF040-45-4I-WHE-T datasheet?
SST39SF040-45-4I-WHE-T Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for SST39SF040-45-4I-WHE-T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
For a new board, how does the 4 Mb parameter affect use of SST39SF040-45-4I-WHE-T?
The fetched product context identifies SST39SF040-45-4I-WHE-T with 4 Mb. Engineers should confirm this concrete value against the manufacturer datasheet and verify that electrical limits, board interfaces, and system requirements match the intended design.
Before production release, which footprint and assembly checks are important for SST39SF040-45-4I-WHE-T?
Production teams should verify the footprint, orientation, and assembly method against controlled drawings. The recorded 4 Mb characteristic provides a concrete checkpoint before PCB release, first-article inspection, and volume manufacturing.
During procurement qualification, what should buyers verify for SST39SF040-45-4I-WHE-T and approved alternatives?
Buyers should match the complete orderable MPN and manufacturer documentation, while confirming that the required 4 Mb configuration remains consistent across quoted stock, approved alternatives, and incoming inspection records.
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About Microchip
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