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Product Detailed Parameters
- Description：45V 100MA 340MW TH TRANSISTOR-SM
- Series：BCY59
- Mfr：Central Semiconductor Corp
- Package：Box
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：700mV @ 2.5mA, 100mA
- Current - Collector Cutoff (Max)：10nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：120 @ 2mA, 5V
- Power - Max：340 mW
- Frequency - Transition：150MHz
- Operating Temperature：-65°C ~ 200°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-206AA, TO-18-3 Metal Can
- Supplier Device Package：TO-18
- Grade：-
- Qualification：-
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Overview
The BCY59-VII TIN/LEAD is a discontinued NPN silicon bipolar junction transistor manufactured by Central Semiconductor Corp. It utilizes a TO-18 metal can package for through-hole mounting. Key electrical ratings include a collector-base voltage of 45V, an emitter-base voltage of 7V, and a maximum continuous collector current of 100mA. The device supports a power dissipation of 1W and features a transition frequency of 150MHz. It operates within a junction temperature range of -65°C to 200°C.
Feature Summary
- NPN silicon construction with high thermal stability
- Metal can (TO-18) packaging for robust mechanical protection
- High transition frequency suitable for RF applications
- Extended operating temperature range up to 200°C
Applications
- Radio frequency amplification circuits
- General-purpose switching applications
- Industrial control systems requiring high temperature tolerance
- Military and aerospace electronic assemblies
Procurement Notes
This component is officially listed as discontinued by the manufacturer. Verification of availability requires checking authorized distributors for remaining stock or surplus inventory. Buyers must confirm RoHS compliance status and lead times carefully, as supply is limited and subject to change without notice.
Selection Notes
Select this part only if legacy compatibility with the TO-18 metal case is required. Verify that the 45V collector-base voltage and 100mA current limits meet circuit demands. Consider the 1W power dissipation capability and ensure adequate heat sinking. Confirm that the 150MHz transition frequency aligns with signal requirements.
Part Context
The BCY59 series belongs to Central Semiconductor's line of general-purpose NPN transistors designed for rugged environments. The VII suffix typically denotes specific binning or manufacturing lot characteristics. This component represents older generation silicon technology optimized for reliability in harsh conditions rather than modern miniaturization.
Replacement Considerations
- BCY59-VII PBFREE
FAQ
Is the BCY59-VII available in a surface-mount package?
No, the BCY59-VII is exclusively available in the TO-18 through-hole metal can package.
What is the maximum junction temperature for this transistor?
The maximum junction temperature rating is 200°C.
Does the TIN/LEAD suffix indicate RoHS compliance?
No, the TIN/LEAD suffix indicates the use of traditional tin-lead solder finishes, which are generally not RoHS compliant compared to Pb-free alternatives.
