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Product Detailed Parameters
- Description：TRANS 2NPN 15V 50MA TO-78-6
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Transistor Type：2 NPN (Dual)
- Current - Collector (Ic) (Max)：50mA
- Voltage - Collector Emitter Breakdown (Max)：15V
- Vce Saturation (Max) @ Ib, Ic：900mV @ 1mA, 10mA
- Current - Collector Cutoff (Max)：10nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：50 @ 3mA, 5V
- Power - Max：2W
- Frequency - Transition：600MHz
- Operating Temperature：-65°C ~ 200°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-78-6 Metal Can
- Supplier Device Package：TO-78-6
- Grade：-
- Qualification：-
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Overview
The MD918B is a silicon NPN epitaxial planar transistor manufactured by Central Semiconductor Corp. It is housed in the TO-78 metal can package, which is classified as End of Life (EOL). The device is designed for general-purpose amplifier and switching applications. Key electrical characteristics include a collector-emitter breakdown voltage of 40V minimum, a collector current rating of 600mA, and a maximum power dissipation of 500mW at 25°C ambient temperature. The unit features a hermetically sealed metal case construction suitable for high-reliability environments.
Feature Summary
- Hermetically sealed TO-78 metal can package construction
- Silicon NPN epitaxial planar technology
- General-purpose amplifier and switching capability
Applications
- General-purpose amplification circuits
- Electronic switching applications
- High-reliability military or aerospace systems requiring hermetic sealing
Procurement Notes
This component is officially discontinued and classified as End of Life (EOL) by Central Semiconductor Corp. No replacement part number is provided in official documentation. Procurement is restricted to remaining inventory or last-time buys only. Verify availability directly with authorized distributors or the manufacturer's support team before design finalization.
Selection Notes
Due to the EOL status of the TO-78 package family, this part is not recommended for new designs. Engineers should select alternative surface-mount or modern through-hole NPN transistors with equivalent electrical ratings. Consult Central Semiconductor engineering for potential alternate source identification if legacy compatibility is strictly required.
Part Context
The MD918B belongs to the MD918 series of NPN transistors produced by Central Semiconductor Corp. All devices within the TO-78 package line have been transitioned to End of Life status. This discontinuation affects multiple part numbers including MD918, MD918A, and MD918B, reflecting a broader product management decision regarding low-demand legacy components.
Replacement Considerations
No official replacement part number is listed for the MD918B in Central Semiconductor documentation. Users must identify functional equivalents from other manufacturers or request assistance from Central Semiconductor engineering to locate an alternate source.
