STX93003 STMicroelectronics Transistor BJT PNP (Other) In Stock
STMicroelectronics STX93003 is a single PNP bipolar junction transistor (BJT) with 400-V collector-emitter voltage, 1-A maximum collector current, and minimum DC current gain (hFE) of 4. Housed in a compact through-hole TO-92 package for general-purpose high-voltage switching. Available in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- STX93003 Datasheet PDF
- Category
- Transistor BJT PNP
- Price
- From $0.2157(MOQ 2500)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- PNP single BJT transistor with 400-V maximum collector-emitter voltage (VCEO) enabling high-voltage switching and linear amplification applications
- 1-A maximum collector current (IC) with minimum DC current gain (hFE) of 4, providing reliable base-drive-controlled current switching
- Compact TO-92 through-hole package (JEDEC-95: TO-92) with collector case connection for straightforward PCB integration in space-efficient designs
- RoHS-compliant Pb-free construction (JESD-609: e3) meets global environmental standards for industrial and consumer product markets
Applications
The STX93003 PNP BJT is suited for high-voltage switching circuits in industrial power supplies, lighting control, and flyback converter base drive applications where 400-V blocking capability is required. It is commonly used in switch-mode power supply auxiliary controllers, motor speed regulation circuits, and general-purpose amplifier stages. Its TO-92 package provides a familiar, easy-to-use form factor for prototyping and small-volume production.
Specifications
| YTEOL | 0 |
| Case Connection | COLLECTOR |
| Collector Current-Max (IC) | 1A |
| Collector-Emitter Voltage-Max | 400V |
| Configuration | SINGLE |
| DC Current Gain-Min (hFE) | 4 |
| JEDEC-95 Code | TO-92 |
| JESD-30 Code | O-PBCY-T3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | ROUND |
| Package Style | CYLINDRICAL |
| Polarity/Channel Type | PNP |
| Power Dissipation-Max (Abs) | 1.5W |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | BOTTOM |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the key electrical ratings of the STX93003 transistor?
The STX93003 is a PNP BJT with a maximum collector-emitter voltage (VCEO) of 400 V and a maximum collector current (IC) of 1 A. Its minimum DC current gain (hFE) is 4, which is relatively low and typical for high-voltage transistors where the gain-bandwidth trade-off favors high voltage blocking over high beta.
What package does the STX93003 use?
The STX93003 is housed in a TO-92 through-hole package (JEDEC-95 code TO-92, JESD-30 code O-PBCY-T3) with the collector connected to the case. This standard plastic through-hole package is widely used for small-signal and low-to-medium power transistors, making the STX93003 easy to prototype and replace on PCBs.
Is the STX93003 still in active production?
The STX93003 has a YTEOL (Years to End of Life) of 0, which indicates it may be at or near end-of-life status. Engineers designing new products should verify current stock availability and consider evaluating alternative high-voltage PNP transistors from STMicroelectronics or other manufacturers to ensure long-term supply chain reliability.
What are typical applications for the STX93003 PNP transistor?
The STX93003 is used in high-voltage switching circuits such as flyback converter gate/base drive, line voltage interface circuits, industrial relay drivers, and general-purpose amplifiers in power management systems. Its 400-V VCEO rating makes it appropriate for circuits operating from rectified mains voltages in European (230-VAC) and North American (120-VAC) power systems.
How does the PNP configuration of the STX93003 affect circuit design?
As a PNP transistor, the STX93003 conducts when the base voltage is pulled below the emitter voltage, which is often connected to the positive supply rail. This high-side switch configuration is commonly used for load switching where the load is connected between the collector and ground, and the base drive signal is referenced to the emitter. The collector-case connection of the TO-92 package must be considered in thermal and layout design.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 2500+ | $0.2536 | $633.90 |
| 5000+ | $0.2330 | $1165.05 |
| 10000+ | $0.2157 | $2157.40 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”