Part Details for BF257 by TT Electronics Resistors
Results Overview of BF257 by TT Electronics Resistors
- Distributor Offerings: (0 listings)
- Number of FFF Equivalents: (0 replacements)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (3 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
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Applications
Consumer Electronics
Security and Surveillance
Internet of Things (IoT)
Space Technology
Environmental Monitoring
Audio and Video Systems
Computing and Data Storage
Financial Technology (Fintech)
Smart Cities
Telecommunications
Communication and Networking
Automotive
BF257 Information
BF257 by TT Electronics Resistors is a Small Signal Bipolar Transistor.
Small Signal Bipolar Transistors are under the broader part category of Transistors.
A transistor is a small semiconductor device used to amplify, control, or create electrical signals. When selecting a transistor, factors such as voltage, current rating, gain, and power dissipation must be considered, with common types. Read more about Transistors on our Transistors part category page.
Part Details for BF257
BF257 CAD Models
BF257 Part Data Attributes
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BF257
TT Electronics Resistors
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Datasheet
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BF257
TT Electronics Resistors
Small Signal Bipolar Transistor, 0.1A I(C), 160V V(BR)CEO, 1-Element, NPN, Silicon, TO-205AD, HERMETIC SEALED, METAL, TO-39, 3 PIN
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| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | TT ELECTRONICS PLC | |
| Package Description | HERMETIC SEALED, METAL, TO-39, 3 PIN | |
| Reach Compliance Code | compliant | |
| ECCN Code | EAR99 | |
| Collector Current-Max (IC) | 0.1 A | |
| Collector-Emitter Voltage-Max | 160 V | |
| Configuration | SINGLE | |
| DC Current Gain-Min (hFE) | 25 | |
| JEDEC-95 Code | TO-205AD | |
| JESD-30 Code | O-MBCY-W3 | |
| Number of Elements | 1 | |
| Number of Terminals | 3 | |
| Package Body Material | METAL | |
| Package Shape | ROUND | |
| Package Style | CYLINDRICAL | |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED | |
| Polarity/Channel Type | NPN | |
| Qualification Status | Not Qualified | |
| Surface Mount | NO | |
| Terminal Form | WIRE | |
| Terminal Position | BOTTOM | |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | |
| Transistor Element Material | SILICON | |
| Transition Frequency-Nom (fT) | 90 MHz |
Alternate Parts for BF257
This table gives cross-reference parts and alternative options found for BF257. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of BF257, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| BD115 | Micro Electronics Corporation | Check for Price | Small Signal Bipolar Transistor, 0.15A I(C), 180V V(BR)CEO, 1-Element, NPN, Silicon, TO-39, TO-39, 3 PIN | BF257 vs BD115 |
| BF338 | Continental Device India Ltd | Check for Price | Small Signal Bipolar Transistor, 0.2A I(C), 225V V(BR)CEO, 1-Element, NPN, Silicon, TO-39 | BF257 vs BF338 |
| BD115 | Central Semiconductor Corp | Check for Price | Small Signal Bipolar Transistor, 0.15A I(C), 180V V(BR)CEO, 1-Element, NPN, Silicon, TO-39, TO-39, 3 PIN | BF257 vs BD115 |