Part Details for BC237A by onsemi
Results Overview of BC237A by onsemi
- Distributor Offerings: (1 listing)
- Number of FFF Equivalents: (6 replacements)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (10 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
BC237A Information
BC237A by onsemi 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.
Price & Stock for BC237A
| Part # | Distributor | Description | Stock | Price | Buy | |
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Rochester Electronics | Small Signal Bipolar Transistor, 0.1A, 45V, NPN, TO-92 RoHS: Not Compliant Status: Obsolete Min Qty: 1 | 3692 |
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$0.0189 / $0.0305 | Buy Now |
Part Details for BC237A
BC237A CAD Models
BC237A Part Data Attributes
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BC237A
onsemi
Buy Now
Datasheet
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Compare Parts:
BC237A
onsemi
100mA, 45V, NPN, Si, SMALL SIGNAL TRANSISTOR, TO-92, CASE 29-11, TO-226AA, 3 PIN
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| Rohs Code | No | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | ONSEMI | |
| Package Description | CASE 29-11, TO-226AA, 3 PIN | |
| Reach Compliance Code | not_compliant | |
| ECCN Code | EAR99 | |
| Factory Lead Time | 4 Weeks | |
| Samacsys Manufacturer | onsemi | |
| Collector Current-Max (IC) | 0.1 A | |
| Collector-Emitter Voltage-Max | 45 V | |
| Configuration | SINGLE | |
| DC Current Gain-Min (hFE) | 120 | |
| JEDEC-95 Code | TO-92 | |
| JESD-30 Code | O-PBCY-T3 | |
| JESD-609 Code | e0 | |
| Number of Elements | 1 | |
| Number of Terminals | 3 | |
| Operating Temperature-Max | 150 °C | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Shape | ROUND | |
| Package Style | CYLINDRICAL | |
| Peak Reflow Temperature (Cel) | 235 | |
| Polarity/Channel Type | NPN | |
| Power Dissipation-Max (Abs) | 0.35 W | |
| Qualification Status | Not Qualified | |
| Surface Mount | NO | |
| Terminal Finish | TIN LEAD | |
| Terminal Form | THROUGH-HOLE | |
| Terminal Position | BOTTOM | |
| Transistor Application | AMPLIFIER | |
| Transistor Element Material | SILICON | |
| Transition Frequency-Nom (fT) | 200 MHz |
Alternate Parts for BC237A
This table gives cross-reference parts and alternative options found for BC237A. 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 BC237A, 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 |
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| BC237A | Fairchild Semiconductor Corporation | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92, LEAD FREE, TO-92, 3 PIN | BC237A vs BC237A |
| BC237A | Central Semiconductor Corp | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92, TO-92-18R, 3 PIN | BC237A vs BC237A |
| BC237ABU | Fairchild Semiconductor Corporation | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92, LEAD FREE, TO-92, 3 PIN | BC237A vs BC237ABU |
| BC237A | Crimson Semiconductor Inc | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92, | BC237A vs BC237A |
| BC237A | Kuwait Semiconductor Co Ltd | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), NPN | BC237A vs BC237A |
| BC237A | KEC | Check for Price | Small Signal Bipolar Transistor, 0.1A I(C), 45V V(BR)CEO, 1-Element, NPN, Silicon, TO-92, TO-92, 3 PIN | BC237A vs BC237A |
BC237A Frequently Asked Questions (FAQ)
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The maximum safe operating area (SOA) for the BC237A is not explicitly stated in the datasheet, but it can be estimated based on the maximum ratings for voltage, current, and power dissipation. As a general rule, it's recommended to operate the transistor within 70-80% of its maximum ratings to ensure reliable operation.
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The choice of resistor values depends on the specific application and the desired operating point of the transistor. A good starting point is to use the datasheet's recommended operating conditions and calculate the resistor values based on the desired current and voltage levels. Additionally, online calculators and simulation tools can be used to optimize the resistor values for the specific application.
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The BC237A is a general-purpose transistor, and its maximum frequency of operation is not explicitly stated in the datasheet. However, based on its transition frequency (fT) of 300 MHz, it's suitable for low-to-medium frequency applications up to around 100 MHz. For higher frequency applications, a more specialized transistor with a higher fT should be considered.
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To ensure the BC237A is properly biased for linear operation, it's essential to set the base-emitter voltage (VBE) and the collector-emitter voltage (VCE) to the recommended values. Typically, VBE should be around 0.65-0.7 V, and VCE should be around 1-2 V. Additionally, the base current should be limited to prevent the transistor from entering saturation.
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The BC237A has a maximum junction temperature (TJ) of 150°C. To ensure reliable operation, it's essential to keep the transistor within its recommended operating temperature range. This can be achieved by providing adequate heat sinking, using a thermal interface material, and ensuring good airflow around the transistor.