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 | 250 @ 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
BC817-40-QR is a general‑purpose NPN transistor in the BC817 family (SMD). The “-40” denotes a high‑gain variant, useful when you need more current gain for small‑signal amplification or switching. The “-QR” suffix indicates RoHS-compliant, tape‑and‑reel packaging for automated assembly. Typical ratings (varies by lot): Vceo around 45 V, Ic up to about 500 mA, suitable for low‑power switching and driver stages. It offers moderate speed and low noise for common circuit tasks. For exact hFE, leakage, and safe‑operating‑area values, refer to the manufacturer’s datasheet for the specific lot. Pinout and footprint depend on the package—check the datasheet for the precise configuration.
Equivalent
BC817-40-QR is a general-purpose NPN transistor in SOT-23 (≈45 V, ≈500 mA, high gain). Common SOT-23 equivalents:
- MMBT3904
- MMBT4401
- MMBT2222A
- 2N3904/2N4401 (SMD versions)
Note: verify Ic, Vce, and hFE ranges; replace with a device that matches your current/voltage requirements and gain.
- MMBT3904
- MMBT4401
- MMBT2222A
- 2N3904/2N4401 (SMD versions)
Note: verify Ic, Vce, and hFE ranges; replace with a device that matches your current/voltage requirements and gain.
Features
BC817-40-QR is a general‑purpose NPN transistor in a SOT‑23 package. Key features:
- Package: SOT‑23, RoHS compliant, lead‑free, tape & reel (QR)
- Vceo: 45 V
- Ic: up to 500 mA
- DC gain (hFE): class 40 (minimum), with higher gains available in the BC817 family
- Temperature range: -55°C to +150°C
- Applications: low‑power switching and amplification in compact/handheld circuits
Concise, suitable for compact consumer electronics and general purpose use.
- Package: SOT‑23, RoHS compliant, lead‑free, tape & reel (QR)
- Vceo: 45 V
- Ic: up to 500 mA
- DC gain (hFE): class 40 (minimum), with higher gains available in the BC817 family
- Temperature range: -55°C to +150°C
- Applications: low‑power switching and amplification in compact/handheld circuits
Concise, suitable for compact consumer electronics and general purpose use.
Pinout
- Pin count: 3 pins
- Function: General-purpose NPN small-signal transistor (SMD), used for amplification and switching (BC817 series in SOT-23 package).
- Function: General-purpose NPN small-signal transistor (SMD), used for amplification and switching (BC817 series in SOT-23 package).
Manufacturer
- Manufacturer: Nexperia.
- What kind of company: A global semiconductor company (Dutch) specializing in high-volume discretes and logic devices, diodes, ESD protection, and related components; formed as an independent spin-off from NXP/Philips.
- What kind of company: A global semiconductor company (Dutch) specializing in high-volume discretes and logic devices, diodes, ESD protection, and related components; formed as an independent spin-off from NXP/Philips.
Application
BC817-40-QR is a general‑purpose NPN transistor (SOT‑23). Common applications:
- Low‑power switching: drive relays, LEDs, optocouplers, small loads
- Small‑signal amplification and buffering in sensor/interface circuits
- Logic‑level buffering and level shifting for microcontroller I/O
- General amplification/switching stages in consumer electronics and instrumentation
Note: choose a suitable grade for automotive or harsh-environment use if required.
- Low‑power switching: drive relays, LEDs, optocouplers, small loads
- Small‑signal amplification and buffering in sensor/interface circuits
- Logic‑level buffering and level shifting for microcontroller I/O
- General amplification/switching stages in consumer electronics and instrumentation
Note: choose a suitable grade for automotive or harsh-environment use if required.
Package
TO-92 through-hole plastic package.
