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Product Detailed Parameters
- Description：TRANS NPN 45V 0.8A SOT-23-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：800 mA
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：700mV @ 50mA, 500mA
- Current - Collector Cutoff (Max)：100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce：250 @ 100mA, 1V
- Power - Max：310 mW
- Frequency - Transition：100MHz
- Operating Temperature：-65°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The BC817-40-7 is a 45V NPN small signal transistor manufactured by Diodes Incorporated in an SOT23 package. It features a collector current of 0.5A, power dissipation of 310mW, and a transition frequency of 100MHz. The device has a minimum DC current gain (hFE) of 250 at IC=100mA, VCE=1V. Maximum ratings include VCBO of 50V, VEBO of 5.0V, and operating temperature range from -65°C to +150°C.
Feature Summary
- Epitaxial planar die construction for reliable performance
- Totally lead-free and fully RoHS compliant with halogen and antimony free green device characteristics
- Qualified to AEC-Q101 standards for high reliability automotive applications
Applications
- General purpose switching circuits
- Audio frequency (AF) amplifier stages
- Automotive electronic systems requiring high reliability
Procurement Notes
Verify the specific ordering suffix matches the required packaging quantity and reel size. Confirm compliance with AEC-Q101 standards if automotive grade is needed. Check date code markings against production timelines. Ensure pad layout matches SOT23 specifications during PCB design. Review datasheet revision history for any recent parameter updates before finalizing procurement.
Selection Notes
Select this component when a 45V NPN transistor with moderate current handling is required. The hFE range of 250 to 600 suits general amplification needs. Consider thermal resistance values for heat dissipation planning. Compare against complementary PNP types like BC807 for push-pull configurations. Verify package dimensions fit within space-constrained designs.
Part Context
Part of the BC817 series offering three current gain selections (-16, -25, -40). Designed as a surface mount alternative to through-hole transistors. Compatible with automated insertion equipment. Shares pinout with other SOT23 NPN devices but differs in voltage and gain specifications. Widely used in consumer electronics and industrial control panels.
Replacement Considerations
BC817-40-7-F serves as the full reel variant. BC817-40 variants from other manufacturers may share electrical specs but require pinout verification. Complementary PNP type BC807-40 pairs well for differential stages. Always validate thermal performance under actual load conditions before substitution.
FAQ
What is the maximum collector-emitter voltage?
The maximum collector-emitter breakdown voltage (BVCEO) is 45V.
Is this component suitable for automotive use?
Yes, it is qualified to AEC-Q101 standards for high reliability automotive applications.
What is the typical DC current gain range?
The DC current gain (hFE) ranges from 250 to 600 at IC=100mA and VCE=1V.
