Nexperia BC857B
BC857B variants from Nexperia
BC857B Overview
What changes between part numbers, and what to check before you lock the BOM — BJTs.
Key Features
- Footprint / package: SOT-23Single 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.
- 5 distinct suffix patternsExamples: B,215, B,235, ,215, ,235, QR. Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- BJTs — 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 5 BC857B 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 |
|---|---|---|---|---|---|---|---|
| BC857B/B,215 | Package: SOT-23 | Mounting Type: Surface Mount | Max Operating Temp: 150°C | Min Operating Temp: -65°C | SOT-23 | Nexperia | Active | Compliant | In Stock | |
| BC857B/B,235 | Package: SOT-23 | Mounting Type: Surface Mount | Max Operating Temp: 150°C | Min Operating Temp: -65°C | SOT-23 | Nexperia | Active | Compliant | In Stock | |
| BC857B,215 | Trans GP BJT PNP 45V 0.1A 250mW Automotive 3-Pin SOT-23 T/R | - | Nexperia | Active | Compliant | In Stock | |
| BC857B,235 | BC856; BC857; BC858 - PNP general purpose transistors TO-236 3-Pin | - | Nexperia | Active | Compliant | In Stock | |
| BC857B-QR | TRANS PNP 45V 0.1A TO236AB | - | Nexperia | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on BC857B map to package, grade, and reel options.
How to Choose the Right BC857B BJTs
Match the footprint first
Packages here: SOT-23. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For BC857B, 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 "BC857B" — include the full suffix (e.g. B,215, B,235, ,215). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for BC857B product family
Identity
Variant Parameters
Source BC857B with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 5 ordering variants from Nexperia. 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 BC857B product family.