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Product Detailed Parameters
- Description：TRANS NPN 45V 0.2A TO-18
- Series：-
- Mfr：STMicroelectronics
- Package：Bulk
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：200 mA
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：700mV @ 2.5mA, 100mA
- Current - Collector Cutoff (Max)：10nA
- DC Current Gain (hFE) (Min) @ Ic, Vce：180 @ 2mA, 5V
- Power - Max：390 mW
- Frequency - Transition：200MHz
- Operating Temperature：175°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 BCY59IX is a single NPN bipolar junction transistor manufactured by STMicroelectronics. It features a maximum collector-emitter voltage of 45 V and a continuous collector current rating of 200 mA. The device operates with a transition frequency of 200 MHz and dissipates up to 390 mW of power. It is housed in a TO-18 metal can package for through-hole mounting. The component supports a maximum junction temperature of 175°C and exhibits a DC current gain of at least 180 under specified test conditions.
Feature Summary
- NPN configuration designed for general-purpose switching and amplification applications
- High-speed operation capability supported by a 200 MHz transition frequency
- Robust thermal performance allowing operation up to a 175°C junction temperature
- Metal can packaging providing mechanical stability and effective heat dissipation
Applications
- General-purpose signal amplification circuits
- Electronic switching applications requiring moderate speed
- Audio processing stages in consumer electronics
- Industrial control logic interfaces
Procurement Notes
Verify the specific suffix 'IX' against official manufacturer documentation to confirm exact binning or testing criteria, as standard part numbers may vary. Confirm RoHS compliance status and availability given the component's potential end-of-life status. Ensure the TO-18 package dimensions match your PCB layout requirements before finalizing procurement decisions.
Selection Notes
Select this component when a ruggedized NPN transistor with high thermal tolerance is required. The TO-18 metal case offers superior durability compared to plastic packages. Consider the 45V breakdown voltage and 200mA current limits to ensure adequate headroom for your circuit design. Verify that the 200MHz frequency response meets your signal processing needs.
Part Context
The BCY59 series represents a line of general-purpose NPN transistors from STMicroelectronics. These devices are commonly used in legacy and industrial designs where reliability is paramount. The BCY59IX variant specifically denotes a particular manufacturing lot or electrical characteristic grouping within the broader BCY59 family, maintaining compatibility with standard TO-18 mounting standards.
Replacement Considerations
Consult official substitution guides for equivalents such as the BCY59 standard version or other NPN transistors with matching 45V/200mA ratings in TO-18 packages. Verify pinout compatibility and thermal characteristics before implementing any substitute components in existing designs.
