BCX19
45 V 500 mA NPN general-purpose bipolar transistor
Key details
| Part Number | BCX19 |
|---|---|
| Manufacturer | Nexperia |
| Category | Bipolar Transistor |
| Lifecycle Status | Production |
| Series | BCX19 |
| Package / Case | 3-lead SOT-23 |
| Pin Count | 3 |
| Operating Temperature | -65°C to +150°C junction |
| Last Verified | 2026-07-18 |
Part information
BCX19 Overview
BCX19 is a Nexperia 45 V 500 mA NPN general-purpose bipolar transistor supplied in 3-lead SOT-23. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.
Key Technical Specifications
| Polarity | NPN |
|---|---|
| Collector-Emitter Voltage | 45 V |
| Collector Current | 500 mA |
| Qualification | AEC-Q101 |
| Typical Use | Amplification and saturated switching |
Package and Ordering Notes
The listed package is 3-lead SOT-23 with 3 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. The part or family is listed by Nexperia as Production at the verification date.
Sourcing Guidance
Confirm current factory lead time, packing format and revision for BCX19 before placing the order.
For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.
Manufacturer Documentation
Technical values were checked against Nexperia documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.
BCX19 selection and design context
BCX19 is cataloged as a Bipolar Transistor in the BCX19 family. Its recorded function is 45 V 500 mA NPN general-purpose bipolar transistor. Selection should be based on the complete electrical limits, package drawing and ordering suffix rather than the abbreviated family code.
- Polarity: NPN. Confirm the value and its datasheet test conditions for the exact ordering suffix.
- Collector-Emitter Voltage: 45 V. Check rail compatibility, tolerance and sequencing under worst-case conditions.
- Collector Current: 500 mA. Check steady-state, transient and thermal margin in the intended operating mode.
- Qualification: AEC-Q101. Confirm the value and its datasheet test conditions for the exact ordering suffix.
Application and qualification considerations
When evaluating this switching device, confirm voltage and current margin, gate-drive conditions, on-state loss, switching energy, thermal impedance and safe operating area. For a new design, review power-up behavior, interface timing, absolute maximum ratings, thermal limits and any external-component requirements in the latest manufacturer documentation. Existing-board replacement work should additionally confirm pinout, footprint, firmware assumptions and qualification grade.
Procurement checks for BCX19
The recorded package is 3-lead SOT-23, the temperature range is -65°C to +150°C junction, and the lifecycle status is Production as of 2026-07-18. Before ordering, confirm the exact MPN on the label, packing format, quantity, date-code requirements, traceability documents and current factory status.
BCX19 FAQ
What distinguishes BCX19 within the BCX19 family?
BCX19 is the exact orderable code for a 45 V 500 mA NPN general-purpose bipolar transistor in 3-lead SOT-23. Related BCX19 devices may change package, rating, interface option or qualification grade, so compare the manufacturer ordering table before substitution.
What package and footprint checks are required for BCX19?
BCX19 is recorded in 3-lead SOT-23 with 3 pins, leads or contacts. Confirm the manufacturer package drawing, dimensions, pin numbering, exposed-pad requirements and packing suffix before releasing a PCB footprint.
Which specifications should be verified when selecting BCX19?
Polarity is recorded as NPN, Collector-Emitter Voltage is recorded as 45 V. Use the latest datasheet for minimum and maximum limits, test conditions, timing and absolute maximum ratings rather than relying only on a distributor summary.
What is the lifecycle status of BCX19?
BCX19 was recorded as Production when verified on 2026-07-18. Reconfirm factory status, revision availability, lead time and any last-time-buy notice before design-in or volume procurement.
What information should be included in an RFQ for BCX19?
Provide the complete BCX19 orderable code, target quantity, acceptable date-code range, required packing method, delivery destination and documentation needs. For replacement work, also identify the existing package and any mandatory qualification grade.
Lifecycle and sourcing review
Lifecycle information is shown for reference. Confirm current manufacturer documentation, availability and technical suitability before purchase.
Confirm current factory lead time, packing format and revision for BCX19 before placing the order.