STMicroelectronics STW45NM
STW45NM variants from STMicroelectronics
STW45NM Overview
What changes between part numbers, and what to check before you lock the BOM — MOSFETs.
STW45NM is a STMicroelectronics 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.
500V 45A N-CH MOSFET TO-247 100mR Other listed variants describe: 600V 45A N-CH MOSFET TO-247 110mR Power.
Suffix examples in this family: 50, 60. 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: STW45NM50, STW45NM60.
Key Features
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 2 distinct suffix patternsExamples: 50, 60. Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- MOSFETs — 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 STW45NM 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 |
|---|---|---|---|---|---|---|
| STW45NM50 | 500V 45A N-CH MOSFET TO-247 100mR | STMicroelectronics | Active | Compliant | In Stock | |
| STW45NM60 | 600V 45A N-CH MOSFET TO-247 110mR Power | STMicroelectronics | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on STW45NM map to package, grade, and reel options.
STW45NM 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: 50, 60.
Full MPN examples: STW45NM50, STW45NM60.
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 STW45NM MOSFETs
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 STW45NM, 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 "STW45NM" — include the full suffix (e.g. 50, 60). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for STW45NM product family
Identity
Variant Parameters
Source STW45NM with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 2 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 STW45NM product family.