BC557-B
- Part number
- BC557-B
- Manufacturer
- STMicroelectronics
- Package
- SOT-23-8
- Status
- Active
- Stock
- Available / RFQ
- Price
- $0.28
- Year / date code
- 2025
View on SJ Chip · Request a quote
Product Overview
BC557-B (STMicroelectronics, SOT-23-8) — IC GATE OR 2CH 2-INP SOT23-8
Technical Specifications
- Part Number
- BC557-B
- Manufacturer
- STMicroelectronics
- Series
- BC557
- Package / Case
- SOT-23-8
- Package Family
- SOT
- Pin / Ball Count (from marking)
- 8
- Lifecycle Status
- Active
- Category
- Discrete Semiconductor
- Mounting Type
- Surface Mount (SMT)
Electrical Characteristics
- Device Class
- Transistor / MOSFET / diode class discrete
- Ratings
- Confirm VDS/VCEO, ID, and RDS(on) / Vf from the datasheet
- Package Constraint
- SOT-23-8 thermal and pinout must match the PCB
Package Information
- Package
- SOT-23-8
- Package Family
- SOT
- Mounting
- Surface Mount (SMT)
- Terminal Count (parsed)
- 8
- Outline Note
- Package marking on this page is for sourcing reference. Confirm body size, pitch, and land pattern from the manufacturer datasheet before layout.
Applications
BC557-B is used for switching, protection, or signal discrete roles on power and interface boards. Match voltage/current ratings and the SOT-23-8 footprint to the existing layout.
Procurement notes
Confirm the full ordering code, package (SOT-23-8), and quantity on RFQ. SJ Chip replies with stock, condition, and lead time. Nearby MPNs are for evaluation only.
Potential Alternatives (SOT-23-8)
- 74V2T384STR · SOT-23-8
- 1288480RL · SOT-23-8
- TSV6392ILT · SOT-23-8
- 74V2GU04STR · SOT-23-8
- 74V2T0ESTR · SOT-23-8
- TSV6292ILT · SOT-23-8
- 74V2G08STR · SOT-23-8
- 74V2T66STR · SOT-23-8
- 74V2G00STR · SOT-23-8
- 1288480 · SOT-23-8
- TSV6292AILT · SOT-23-8
- 74V2G04STR · SOT-23-8
FAQ
Where to buy BC557-B?
You can request BC557-B from SJ Chip via the RFQ form on this page or the site-wide RFQ. We confirm manufacturer (STMicroelectronics), package, quantity, and lead time on the quotation.
Is BC557-B available?
Listed inventory shows 41,472 pcs. Lot, date code, and shippable quantity are confirmed on RFQ — treat the listing as availability to quote, not a guaranteed cart ship.
What is the package of BC557-B?
The sourcing listing shows package SOT-23-8. Always verify body size, pitch, and land pattern against the STMicroelectronics datasheet before PCB layout.
What are alternatives to BC557-B?
Potential alternatives include 74V2T384STR, 1288480RL, TSV6392ILT and other same-series or same-package listings — all require datasheet and pinout checks. These are similar stock for evaluation, not automatic drop-in replacements.
Sourcing information
| Part Number | BC557-B |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-8 |
| Description | IC GATE OR 2CH 2-INP SOT23-8 |
| Availability | Listed inventory: 41,472 pcs — confirm lot, date code, and quantity on RFQ |
| RFQ | Submit the full part number and quantity through the RFQ form |
| Lead Time | Lead time is confirmed on the quotation after RFQ. In-stock conventional lots often ship in 3–5 working days from Hong Kong; special, allocation, or obsolete lines are quoted separately. |
| Condition | Condition is stated on the quotation/PI (new, surplus, or EOL). Lots are inspected before shipment. |