What is a cross-reference page for 93C66C-E/SN?
This page groups mapped replacement options for 93C66C-E/SN so buyers and engineers can compare alternatives before requesting a quote or approving a substitute.
Alternative part analysis
93C66C-E/SN replacements, alternatives, and cross reference
Compare mapped replacement and alternative options for 93C66C-E/SN, then verify package, specifications, and application fit before approval.
Compare 93C66C-E/SN against mapped replacement options
Review package, lifecycle, stock, and MOQ in one view
Move from engineering screening to RFQ without leaving the page
No mapped replacement parts yet
This product currently does not show a published cross-reference list. Use RFQ support if your team needs an alternative part review.
Specification view
Parameter Comparison Chart
A side-by-side view of the source part and its mapped alternatives so buyers and engineers can screen package, availability, lifecycle, and key descriptors before RFQ.
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| Parameter Comparison Chart | Current part 93C66C-E/SN Microchip Technology |
|---|---|
| Part Number | 93C66C-E/SN |
| Manufacturer | Microchip Technology |
| Category | Integrated Circuits (ICs) |
| Subcategory | Memory |
| Package | 8SOIC |
| Series | - |
| Key Attributes | - |
| Description | IC EEPROM 4K SPI 3MHZ 8SOIC |
| Lifecycle | - |
| Stock | 160,696 |
| Available | 76,877 |
| Min Order | 1 |
| Datasheet | Available |
| JESD-609 Code | e3 |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| ECCN Code | EAR99 |
| HTSUS | 8542.32.0051 |
| Part Status | Active |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
| Lead Free | Lead Free |
| Packaging | Tube |
| Mounting Type | Surface Mount |
| Published | 2003 |
| Factory Lead Time | 6 Weeks |
| Categories | Integrated Circuits (ICs) |
| Terminal Position | DUAL |
| Peak Reflow Temperature (Cel) | 260 |
| Technology | CMOS |
| Operating Temperature | -40°C~125°C TA |
| Manufacturer | Microchip Technology |
| Width | 3.9mm |
| Package / Case | 8-SOIC (0.154, 3.90mm Width) |
| Nominal Supply Current | 2mA |
| Number of Functions | 1 |
| Operating Supply Voltage | 5V |
| Contact Plating | Tin |
| Radiation Hardening | No |
| Reflow Temperature-Max (s) | 40 |
| Supply Voltage | 2.5V |
| Mount | Surface Mount |
| Pbfree Code | yes |
| Terminal Pitch | 1.27mm |
| Number of Pins | 8 |
| Number of Terminations | 8 |
| Pin Count | 8 |
| Length | 4.9mm |
| Memory Type | Non-Volatile |
| Interface | Serial |
| Sub-Categories | Memory |
| Memory Width | 16 |
| Memory Interface | SPI |
| Endurance | 1000000 Write/Erase Cycles |
| Memory Format | EEPROM |
| Standby Current-Max | 0.000005A |
| Clock Frequency | 3MHz |
| Write Protection | SOFTWARE |
| Write Cycle Time - Word, Page | 2ms |
| Organization | 256X16 |
| Write Cycle Time-Max (tWC) | 2ms |
| Base Part Number | 93C66C |
| Manufacturer's Part No. | 93C66C-E/SN |
| Height Seated (Max) | 1.75mm |
| Power Supplies | 5V |
| Voltage - Supply | 4.5V~5.5V |
| Data Retention Time-Min | 200 |
| Alternate Memory Width | 8 |
| Density | 4 kb |
| Serial Bus Type | MICROWIRE |
| Memory Size | 4Kb 512 x 8 256 x 16 |
| Access Time | 200 ns |
| Actions |
Cross-reference FAQ
Replacement Part Questions
Short answers for teams reviewing 93C66C-E/SN replacement and equivalent-part options.
Does a mapped alternative mean a guaranteed drop-in replacement for 93C66C-E/SN?
Not automatically. Cross-reference mapping helps shortlist candidates, but package, electrical behavior, qualification scope, and approval rules still need to be checked before release.
Which parameters should teams compare first for 93C66C-E/SN alternatives?
Start with package, series, key attributes, lifecycle status, stock position, datasheet access, and the mapped pin-to-pin or cross-reference note. Then confirm application-specific requirements in the datasheet and RFQ stage.
Can I request a quote for an alternative to 93C66C-E/SN?
Yes. Use the product links or RFQ actions on this page to request pricing, availability, documentation, and sourcing support for any listed alternative part.
Is 93C66C-E/SN obsolete, and what replacement should buyers review first?
Check the lifecycle row on this page first. If buyers need a fast starting point, the strongest mapped replacement currently surfaced here is , followed by the other alternatives shown in the comparison table.
Engineering support
Need help validating the replacement path?
If your team is unsure whether a mapped alternative to 93C66C-E/SN from Microchip Technology is really usable, contact us for help on package fit, pin compatibility, key parameter gaps, and qualification-facing review questions.
Contact a hardware engineer
Email our engineering support contact at [email protected], or use the contact page if the question should be routed across sourcing, engineering, and support.
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Package and pin compatibility
Review whether the alternate path looks credible from package, footprint, and pin-level perspectives.
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Parameter and function gaps
Surface the electrical, interface, or application-fit questions that still need confirmation before approval.
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Qualification and approval prep
Organize the documentation, datasheet evidence, and validation checkpoints your internal team may still require.