規格
| 屬性 | 價值 |
| 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 silicon transistor in the SOT-23 package. The “-QR” suffix denotes the reel/tape SMD packaging variant, while “-25” identifies a specific gain group within the BC817 family. It’s used for small-signal amplification and switching in low-power circuits (e.g., microcontroller interfaces, drivers). Typical specs (varies by lot): Vceo around 45 V and Ic up to about 0.45–0.5 A. The exact current gain (hFE) depends on the gain group and operating point. For precise electrical characteristics, consult the manufacturer’s datasheet. It’s a common drop-in replacement for similar small-signal transistors like the 2N3904 in many designs.
Equivalent
Equivalent parts to BC817-25-QR (NPN general‑purpose, 45V, ~0.5A, SOT‑23):
- BC847B (SOT‑23, NXP/Nexperia) – same family, similar specs
- MMBT3904 – SMD version of 2N3904 (40V, ~200mA)
- 2N3904 – through‑hole counterpart
- MMBT2222A – SMD variant (higher current capability)
- BC847B (SOT‑23, NXP/Nexperia) – same family, similar specs
- MMBT3904 – SMD version of 2N3904 (40V, ~200mA)
- 2N3904 – through‑hole counterpart
- MMBT2222A – SMD variant (higher current capability)
Features
BC817-25-QR is a general-purpose NPN transistor in SOT-23 with RoHS-compliant, tape-and-reel packaging (QR). Key features:
- NPN silicon transistor
- Vceo up to 45 V
- Ic up to 500 mA
- SOT-23 3-pin package; rugged, tiny
- High DC gain (hFE varies by Ic/temperature; BC817-25 variant)
- Low Vce(sat) with adequate base drive
- Wide operating temp: typically -55°C to +150°C
- Suitable for amplification and switching in compact designs
- RoHS compliant; QR indicates Tape & Reel packaging
Note: Exact hFE and Vce(sat) depend on operating conditions and lot; consult the datasheet for precise curves.
- NPN silicon transistor
- Vceo up to 45 V
- Ic up to 500 mA
- SOT-23 3-pin package; rugged, tiny
- High DC gain (hFE varies by Ic/temperature; BC817-25 variant)
- Low Vce(sat) with adequate base drive
- Wide operating temp: typically -55°C to +150°C
- Suitable for amplification and switching in compact designs
- RoHS compliant; QR indicates Tape & Reel packaging
Note: Exact hFE and Vce(sat) depend on operating conditions and lot; consult the datasheet for precise curves.
Pinout
Three pins. It is a general‑purpose NPN transistor (BC817 family) used for switching and amplification in SOT‑23 (QR) package.
Manufacturer
Manufacturer: Nexperia.
What kind of company: Nexperia is a global semiconductor company that designs and manufactures discrete components (such as transistors and diodes), logic devices, and MOSFETs for automotive, industrial, and consumer markets.
What kind of company: Nexperia is a global semiconductor company that designs and manufactures discrete components (such as transistors and diodes), logic devices, and MOSFETs for automotive, industrial, and consumer markets.
Application
BC817-25-QR is a general‑purpose NPN transistor in an SOT‑23 package. Common uses:
- Microcontroller I/O interfacing
- LED and relay drivers
- Small‑signal amplification (audio/sensor front ends)
- Switching/buffering in digital circuits
- Level shifting and protection in power‑management circuits
- Sensor interfacing in hobby/consumer electronics
Suitable for low‑power switching and amplification in compact, surface‑mount designs.
- Microcontroller I/O interfacing
- LED and relay drivers
- Small‑signal amplification (audio/sensor front ends)
- Switching/buffering in digital circuits
- Level shifting and protection in power‑management circuits
- Sensor interfacing in hobby/consumer electronics
Suitable for low‑power switching and amplification in compact, surface‑mount designs.
Package
SOT-23 (3-pin) surface-mount package; the -QR suffix denotes tape-and-reel packaging (shipping).
