STMicroelectronics M93C
M93C variants from STMicroelectronics
M93C Overview
What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.
M93C is a STMicroelectronics order-code family — not a single orderable MPN. This page lists 10 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.
Automotive 1-Kbit MICROWIRE serial EEPROM Other listed variants describe: 1Kb EEPROM, MICROWIRE Serial, 200ns Access, SOIC, 2MHz; 1Kb MICROWIRE EEPROM, Serial, 200ns, SOIC, 2.5-5.5V.
Across listed variants, watch these parameters: packages: 8-TSSOP (0.173", 4.40mm Width).
Suffix examples in this family: 46-RMN3TP/K, 46-WMN6P, 46-WMN6TP, 66-RMN3TP/K, 66-WMN6P, 66-WMN6TP, 86-RMN3TP/K, 86-WMN6P. 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: M93C46-RMN3TP/K, M93C46-WMN6P, M93C46-WMN6TP, M93C66-RMN3TP/K, M93C66-WMN6P, M93C66-WMN6TP.
Key Features
- Footprint / package: 8-TSSOP (0.173", 4.40mm Width)Single package option across listed variants; still confirm reel vs tube suffix if you auto-insert.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 10 distinct suffix patternsExamples: 46-RMN3TP/K, 46-WMN6P, 46-WMN6TP, 66-RMN3TP/K, 66-WMN6P (+5 more). 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 10 M93C part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| M93C46-RMN3TP/K | Automotive 1-Kbit MICROWIRE serial EEPROM | - | STMicroelectronics | Active | Compliant | In Stock | |
| M93C46-WMN6P | 1Kb EEPROM, MICROWIRE Serial, 200ns Access, SOIC, 2MHz | - | STMicroelectronics | Active | Compliant | In Stock | |
| M93C46-WMN6TP | 1Kb MICROWIRE EEPROM, Serial, 200ns, SOIC, 2.5-5.5V | - | STMicroelectronics | Active | Compliant | In Stock | |
| M93C66-RMN3TP/K | Automotive 4Kbit Serial EEPROM, 1.8-5.5V, 2MHz, AEC-Q100 | - | STMicroelectronics | Active | Compliant | In Stock | |
| M93C66-WMN6P | 4Kb MICROWIRE EEPROM, 2MHz, 5.5V, SOIC, 200ns | - | STMicroelectronics | Active | Compliant | In Stock | |
| M93C66-WMN6TP | 4Kb MICROWIRE EEPROM, 2MHz, 5.5V, SOIC, Serial Interface | - | STMicroelectronics | Active | Compliant | In Stock | |
| M93C86-RMN3TP/K | 16-Kbit Serial EEPROM, 1.8-5.5V, 125°C, AEC-Q100 | - | STMicroelectronics | Active | Compliant | In Stock | |
| M93C86-WMN6P | 16Kb MICROWIRE EEPROM, 2MHz, 200ns, SOIC, 5.5V | - | STMicroelectronics | Active | Compliant | In Stock | |
| M93C86-WMN6TP | 16Kb EEPROM, Serial MICROWIRE, 2MHz, SOIC, 5V | - | STMicroelectronics | Active | Compliant | In Stock | |
| M93C86-RDW3TP/K | Package: 8-TSSOP (0.173", 4.40mm Width) | Mounting Type: Surface Mount | Supply Voltage: 1.8V ~ 5.5V | Memory Size: 16Kb (2K x 8, 1K x 16) | Operating Temperature: -40°C ~ 125°C (TA) | 8-TSSOP (0.173", 4.40mm Width) | STMicroelectronics | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on M93C map to package, grade, and reel options.
M93C 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: 46-RMN3TP/K, 46-WMN6P, 46-WMN6TP, 66-RMN3TP/K, 66-WMN6P, 66-WMN6TP, 86-RMN3TP/K, 86-WMN6P, 86-WMN6TP, 86-RDW3TP/K.
Full MPN examples: M93C46-RMN3TP/K, M93C46-WMN6P, M93C46-WMN6TP, M93C66-RMN3TP/K, M93C66-WMN6P.
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 M93C Microcontrollers
Match the footprint first
Packages here: 8-TSSOP (0.173", 4.40mm Width). Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For M93C, 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 "M93C" — include the full suffix (e.g. 46-RMN3TP/K, 46-WMN6P, 46-WMN6TP). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for M93C product family
Identity
Variant Parameters
Source M93C with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 10 ordering variants from STMicroelectronics. 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 M93C product family.