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BC817-25-QR

Name: BC817-25-QR
Rating: 4.7 (12 reviews)

TRANS NPN 45V 0.5A TO236AB

製造商
製造商。部分 #BC817-25-QR
包 TO-236-3, SC-59, SOT-23-3
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規格

Supplier	Nexperia USA Inc.
Package	Bulk
Series	Automotive, AEC-Q101, BC817-Q
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 (ICBO)
DCCurrentGain(hFE)(Min)@IcVce	160 @ 100mA, 1V
Power-Max	250 mW
Frequency-Transition	100MHz
OperatingTemperature	150°C (TJ)
MountingType	Surface Mount
Package/Case	TO-236-3, SC-59, SOT-23-3

概述

Description

BC817-25-QR is a general‑purpose NPN transistor from the BC817 family, used for small‑signal amplification and switching in low‑power circuits. The -25 suffix denotes its gain group (hFE range) within the BC817 family, while the -QR suffix indicates the SMD version in tape‑and‑reel packaging (typically SOT‑23).
Key points:
- Type: NPN, common switching/amplification device
- Package/packaging: SMD (SOT‑23), QR = reel packaging
- Typical ratings (manufacturer dependent): Vceo ≈ 45 V; Ic up to ~0.8 A
- Gain: Group 25 (moderate/high gain, varies with Ic and temperature)
- Pinout (SOT‑23, verify with datasheet): usually 1 = Emitter, 2 = Base, 3 = Collector
- Applications: logic level shifting, small signal amplification, driving transistors/relays, general low‑power switching
Note: exact electrical characteristics vary by vendor. Always consult the specific datasheet for your BC817‑25‑QR supplier (hFE, Vceo, package, temperature range).

Features

BC817-25-QR is a general‑purpose NPN small‑signal transistor in SOT‑23 with RoHS compliance and Tape‑and‑Reel packaging (QR).
Key features
- Type: NPN silicon transistor for general switching and amplification
- Package: SOT‑23, surface‑mount
- RoHS compliant; packaging code QR (tape & reel)
- Collector current (Ic): up to ~500 mA
- Collector–emitter voltage (Vceo): up to 45 V
- Power dissipation (Ptot): typically around a few hundred milliwatts (often ~250 mW class)
- DC current gain (hFE): BC817‑25 group (mid/high gain), suitable for gain‑sensitive applications
- Temperature range: typically −55°C to +125°C
- Excellent for small‑signal amplification, switching, and general purpose transistor tasks on compact boards
Note: For exact hFE, voltage, and power specs, refer to the manufacturer’s datasheet for the BC817‑25‑QR variant.

Package

BC817-25-QR comes in a SOT-23 (3-pin) surface-mount package.

Pinout

Pin count: 3.
Pin functions (TO‑92 orientation: flat face toward you, leads down, left→right):
- Pin 1 — Collector
- Pin 2 — Base
- Pin 3 — Emitter
Device function: BC817-25-QR is an NPN silicon bipolar junction transistor (BC817 family, gain group “25”) used for general-purpose switching and low‑power amplification.

Manufacturer

The BC817-25-QR is sold by Diodes Incorporated (Diodes Inc.). Diodes Inc. is a global semiconductor manufacturer that designs and supplies discrete semiconductors, power management, logic and analog integrated circuits used in consumer, computing, industrial and automotive applications.

Application

- General-purpose NPN transistor for low-power switching and small-signal amplification
- Drives relays, transistors, optocouplers, and LED loads
- Level shifting and buffering in microcontroller and sensor interfaces
- Driver stage in power-management and DC-DC regulator circuits
- Widely used in consumer electronics and automotive applications

Equivalent

BC817-25-QR is a general‑purpose NPN transistor in SOT‑23 (Vceo ≈ 45V, Ic ≈ 0.5A). Common cross-ref equivalents in SOT‑23:
- BC847B (Nexperia)
- MMBT3904 (40V, ~200mA)
- MMBT4401 (60V, ~600mA)
- MMBT2222A (40V, ~600mA)
Through‑hole equivalents: 2N3904, 2N4401 (with adapters if needed).