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BC817-40-7-F

Name: BC817-40-7-F
Rating: 4.7 (12 reviews)

TRANS NPN 45V 0.5A SOT23-3

製造商
製造商。部分 #BC817-40-7-F
包 TO-236-3, SC-59, SOT-23-3
資料表 BC817-40-7-F DataSheet
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規格

Supplier	Diodes Incorporated
Package	Tape & Reel (TR),Cut Tape (CT)
Series	Automotive, AEC-Q101
ProductStatus	Active
TransistorType	NPN
Current-Collector(Ic)(Max)	500 mA
Voltage-CollectorEmitterBreakdown(Max)	45 V
VceSaturation(Max)@IbIc	700mV @ 50mA, 500mA
Current-CollectorCutoff(Max)	100nA
DCCurrentGain(hFE)(Min)@IcVce	250 @ 100mA, 1V
Power-Max	310 mW
Frequency-Transition	100MHz
OperatingTemperature	-65°C ~ 150°C (TJ)
MountingType	Surface Mount
Package/Case	TO-236-3, SC-59, SOT-23-3

概述

Description

BC817-40-7-F is a small-signal NPN transistor (BC817 family) in a TO-92 (through-hole) package. The -F suffix generally means RoHS/lead-free. The -40 and -7 are vendor-specific variant codes that indicate a particular current-gain (hFE) group and lot/package details; the exact hFE and limits depend on the manufacturer, so you should consult the specific datasheet for this exact part.
Typical general-purpose specs for BC817 family (vendor variants may vary):
- Vceo (collector-emitter max): ~45 V
- Ic max: ~500 mA
- Power: ~0.5–0.6 W
- hFE: broad range depending on variant (often hundreds; exact value in the chosen group)
Usage: suitable for switching and amplification in low-power circuits.
If you need precise numbers, look up the exact datasheet for BC817-40-7-F from the supplier (to confirm hFE group, max ratings, and packaging).

Features

BC817-40-F is a general‑purpose NPN transistor in a SOT‑23 package. Key features:
- Vceo: 45 V; Ic max: ~0.5 A
- Vebo: ~5 V
- hFE: from the BC817 “40” group (high gain for this family)
- Low-noise, suitable for amplification and switching
- Vce(sat) typically around 0.2–0.5 V at moderate Ic (with proper drive)
- Temperature range: −55 °C to +150 °C
- Pb‑free / RoHS compliant; SOT‑23 / 3‑pin package
Common uses: general switching, driver stages, and small‑signal amplification.

Package

SOT-23 3‑pin surface-mount package (Pb-free).

Pinout

- Pin count: 3 (SOT-23 package)
- Function: General-purpose NPN bipolar transistor (switching/amplification)
- Typical pinout (SOT-23, flat face): Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector

Manufacturer

Manufacturer: Diodes Incorporated (Diodes Inc.).
What kind of company: Diodes Inc. is a global semiconductor manufacturer that designs and supplies discrete semiconductors and ICs—including diodes, transistors, logic, analog and power-management devices—for consumer, industrial and automotive markets.

Application

BC817-40-7-F is a general‑purpose NPN transistor (Vceo ≈ 45 V, Ic up to ~0.5 A, hFE around 40). Used for low‑power switching and small‑signal amplification in consumer electronics. Typical applications: driving relays/LEDs from microcontroller outputs; buffering and level shifting; amplifying small sensor or audio signals; general transistor switch/amplifier stages in hobby and embedded designs.

Equivalent

BC817-40-7-F is an NPN general-purpose transistor (Vceo ~45V, Ic ~0.5A, hFE around 40). Direct equivalents:
- BC817-40 (same device from other manufacturers)
- MMBT817 (SMD version)
Other viable substitutions (same family, check Ic and gain match):
- 2N3904 or MMBT3904
- BC547B/C (check hFE)
Note: verify Vceo, Ic, and hFE to ensure exact compatibility.