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Product Detailed Parameters
- Description：TRANS NPN 50V 3.5A TO-39
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：3.5 A
- Voltage - Collector Emitter Breakdown (Max)：50 V
- Vce Saturation (Max) @ Ib, Ic：500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max)：10µA
- DC Current Gain (hFE) (Min) @ Ic, Vce：20 @ 1.2A, 2V
- Power - Max：1 W
- Frequency - Transition：30MHz
- Operating Temperature：-
- Mounting Type：Through Hole
- Package / Case：TO-205AD, TO-39-3 Metal Can
- Supplier Device Package：TO-39
- Grade：-
- Qualification：-
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Overview
The Central Semiconductor Corp 2N5785 is an NPN small signal amplifier and switch transistor housed in a TO-39 metal can package. It features a collector-base voltage of 65 V, a collector-emitter voltage of 50 V, and an emitter-base voltage of 5.0 V. The device supports a maximum collector current of 100 mA with a minimum DC current gain (hFE) of 60 at 20 mA. Key electrical characteristics include a transition frequency of 1200 MHz, a collector capacitance of 1.0 pF, and saturation voltages of 2.0 V at 1 A and 0.75 V at 100 mA.
Feature Summary
- Designed for high-frequency amplification and switching applications
- Utilizes a hermetically sealed TO-39 metal case for environmental protection
- Provides high transition frequency performance suitable for RF circuits
Applications
- High-frequency amplifier stages
- Electronic switching circuits
- Radio frequency signal processing
Procurement Notes
Verify the specific plating configuration required for your assembly process, as options include Tin/Lead or Lead-Free finishes. Confirm availability status carefully, as this component has been subject to End-of-Life notices and may be available only through existing stock. Contact the manufacturer directly for current inventory levels and last-time buy information before finalizing procurement plans.
Selection Notes
Select this component when a hermetically sealed NPN transistor with a 50 V collector-emitter rating and high-speed switching capability is required. Ensure the application circuit operates within the specified 100 mA continuous collector current limit. Verify that the TO-39 package dimensions are compatible with the target PCB or chassis mounting requirements.
Part Context
This part belongs to the Central Semiconductor small signal transistor family, specifically optimized for general-purpose amplification and switching tasks. It shares the TO-39 form factor with other discrete transistors in the portfolio but offers distinct voltage and frequency parameters tailored for mid-range RF applications.
Replacement Considerations
Official documentation lists no direct replacement part numbers for the 2N5785. Customers are advised to submit technical inquiries to the manufacturer's engineering team for assistance in locating alternate sources or equivalent components.
FAQ
What is the maximum collector-emitter voltage for the 2N5785?
The maximum collector-emitter voltage (VCEO) is 50 V.
Does the 2N5785 have a recommended substitute part number?
No official replacement part number is provided by the manufacturer; alternative sourcing requires direct engineering consultation.
What is the typical transition frequency of this transistor?
The transition frequency (fT) is specified at 1200 MHz under standard test conditions.
