Part Details for 2N2905 by Motorola Semiconductor Products
Results Overview of 2N2905 by Motorola Semiconductor Products
- Distributor Offerings: (6 listings)
- Number of FFF Equivalents: (9 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.
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2N2905 Information
2N2905 by Motorola Semiconductor Products 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 2N2905
| Part # | Distributor | Description | Stock | Price | Buy | |
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Bristol Electronics | 183 |
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RFQ | ||
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Quest Components | TRANSISTOR,BJT,PNP,40V V(BR)CEO,600MA I(C),TO-39 | 38 |
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$0.7500 / $1.5000 | Buy Now |
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Quest Components | TRANSISTOR,BJT,PNP,40V V(BR)CEO,600MA I(C),TO-39 | 22 |
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$1.0440 / $1.7400 | Buy Now |
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Quest Components | TRANSISTOR,BJT,PNP,40V V(BR)CEO,600MA I(C),TO-39 | 8 |
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$1.6710 / $2.2280 | Buy Now |
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Quest Components | TRANSISTOR,BJT,PNP,40V V(BR)CEO,600MA I(C),TO-39 | 2 |
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$0.6250 | Buy Now |
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ComSIT USA | Small Signal Bipolar Transistor, 0.6A I(C), 40V V(BR)CEO, 1-Element, PNP, Silicon, TO-39 ECCN: EAR99 RoHS: Not Compliant |
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RFQ |
Part Details for 2N2905
2N2905 CAD Models
2N2905 Part Data Attributes
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2N2905
Motorola Semiconductor Products
Buy Now
Datasheet
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Compare Parts:
2N2905
Motorola Semiconductor Products
Small Signal Bipolar Transistor, 0.6A I(C), 40V V(BR)CEO, 1-Element, PNP, Silicon, TO-39
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| Rohs Code | No | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | MOTOROLA INC | |
| Reach Compliance Code | unknown | |
| ECCN Code | EAR99 | |
| HTS Code | 8541.29.00.75 | |
| Collector Current-Max (IC) | 0.6 A | |
| Collector-Base Capacitance-Max | 8 pF | |
| Collector-Emitter Voltage-Max | 40 V | |
| Configuration | SINGLE | |
| DC Current Gain-Min (hFE) | 30 | |
| JEDEC-95 Code | TO-39 | |
| JESD-30 Code | O-MBCY-W3 | |
| JESD-609 Code | e0 | |
| Number of Elements | 1 | |
| Number of Terminals | 3 | |
| Operating Temperature-Max | 200 °C | |
| Operating Temperature-Min | -65 °C | |
| Package Body Material | METAL | |
| Package Shape | ROUND | |
| Package Style | CYLINDRICAL | |
| Polarity/Channel Type | PNP | |
| Power Dissipation Ambient-Max | 3 W | |
| Qualification Status | Not Qualified | |
| Surface Mount | NO | |
| Terminal Finish | TIN LEAD | |
| Terminal Form | WIRE | |
| Terminal Position | BOTTOM | |
| Transistor Application | SWITCHING | |
| Transistor Element Material | SILICON | |
| Transition Frequency-Nom (fT) | 200 MHz | |
| Turn-off Time-Max (toff) | 100 ns | |
| Turn-on Time-Max (ton) | 45 ns | |
| VCEsat-Max | 1.6 V |
Alternate Parts for 2N2905
This table gives cross-reference parts and alternative options found for 2N2905. 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 2N2905, 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 |
|---|---|---|---|---|
| 2N2905 | TT Electronics Power and Hybrid / Semelab Limited | Check for Price | 600mA, 40V, PNP, Si, SMALL SIGNAL TRANSISTOR, TO-205AD, HERMETIC SEALED, METAL, TO-39, 3 PIN | 2N2905 vs 2N2905 |
| 2N2905 | Vishay Intertechnologies | Check for Price | Small Signal Bipolar Transistor, 1-Element, PNP, Silicon, TO-5, METAL PACKAGE-3 | 2N2905 vs 2N2905 |
| JANTXV2N2905 | Raytheon Semiconductor | Check for Price | Small Signal Bipolar Transistor, 0.6A I(C), 40V V(BR)CEO, 1-Element, PNP, Silicon, TO-39, SIMILAR TO TO-39, 3 PIN | 2N2905 vs JANTXV2N2905 |
| JANTX2N2905 | Raytheon Semiconductor | Check for Price | Small Signal Bipolar Transistor, 0.6A I(C), 40V V(BR)CEO, 1-Element, PNP, Silicon, TO-39, SIMILAR TO TO-39, 3 PIN | 2N2905 vs JANTX2N2905 |
| 2N2905 | Swampscott Electronics Co Inc | Check for Price | Small Signal Bipolar Transistor, 0.6A I(C), 40V V(BR)CEO, 1-Element, PNP, Silicon, TO-39, TO-39, 3 PIN | 2N2905 vs 2N2905 |
| 2N2905E4 | TT Electronics Resistors | Check for Price | Small Signal Bipolar Transistor, 0.6A I(C), 40V V(BR)CEO, 1-Element, PNP, Silicon, TO-205AD, HERMETIC SEALED, METAL, TO-39, 3 PIN | 2N2905 vs 2N2905E4 |
| 2N2905 | International Devices Inc | Check for Price | Small Signal Bipolar Transistor, 0.6A I(C), 40V V(BR)CEO, 1-Element, PNP, Silicon, TO-39, TO-39, 3 PIN | 2N2905 vs 2N2905 |
| 2N2905 | Semiconductor Technology Inc | Check for Price | Small Signal Bipolar Transistor, 0.6A I(C), 40V V(BR)CEO, 1-Element, PNP, Silicon, TO-39, TO-39, 3 PIN | 2N2905 vs 2N2905 |
| JAN2N2905 | Silicon Transistor Corporation | Check for Price | Small Signal Bipolar Transistor, 0.6A I(C), 40V V(BR)CEO, 1-Element, PNP, Silicon, TO-39 | 2N2905 vs JAN2N2905 |
2N2905 Frequently Asked Questions (FAQ)
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The maximum safe operating area (SOA) for the 2N2905 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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Thermal management is crucial for the 2N2905, as excessive heat can reduce its lifespan. Ensure good heat dissipation by using a heat sink, thermal interface material, and a PCB design that allows for adequate airflow. The transistor's thermal resistance (RθJA) is typically around 200°C/W, so calculate the maximum junction temperature (TJ) based on the power dissipation and ambient temperature.
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The recommended storage temperature range for the 2N2905 is -55°C to +150°C. Storing the transistor outside this range can affect its performance and lifespan. It's essential to follow proper storage and handling procedures to prevent damage.
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Yes, the 2N2905 can be used in switching applications, but it's essential to consider its switching characteristics, such as the transition frequency (ft) and the storage time (ts). The transistor's switching performance may not be as good as more modern switching transistors, so ensure that your design takes into account its limitations.
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Selecting the correct resistor values for the 2N2905 base circuit depends on the specific application and the desired current gain. A general rule of thumb is to choose a base resistor (Rb) that limits the base current to around 1-5% of the collector current. The emitter resistor (Re) should be chosen to provide the desired voltage drop and current limiting.