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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

STMicroelectronics STX0560

Name: STX0560
Brand: STMicroelectronics
SKU: STX0560
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STX0560

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: STX0560.pdf

Description:: TRANS NPN 600V 1A TO-92

Quantity:: RFQ Add To RFQ list

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Inventory:7,683

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Product details

Overview

STX0560 from STMicroelectronics is a high-voltage fast-switching NPN power transistor manufactured using multi-epitaxial planar technology, featuring 800 V V_CES, 1 A continuous collector current, and 1.5 W total dissipation at T_C = 25 °C; it serves as the main switching element in compact fluorescent lamp (CFL) ballasts and low-power SMPS for battery chargers.

For engineers reviewing the STX0560 datasheet, STX0560 pinout, STX0560 application, or STX0560 equivalent, key selection considerations include V_CEO = 600 V, V_CE(sat) = 1 V @ I_C = 0.5 A/I_B = 100 mA, h_FE = 70–100, R_thJC = 83 °C/W, and TO-92 package thermal and layout constraints.

Technical Context

This device employs a cellular emitter structure with planar edge termination to simultaneously achieve wide RBSOA and enhanced switching speed. Its high-voltage capability stems from multi-epitaxial planar process optimization for breakdown robustness under repetitive switching stress.

The transistor is characterized for both resistive and inductive load switching, with storage time (t_s) specified as TBD in both configurations-indicating design emphasis on controlled turn-off behavior in reactive loads typical of CFL and SMPS flyback topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CES	800 V - maximum collector-emitter voltage with base open; enables operation in 600 V DC bus applications with margin.
V_CEO	600 V - rated collector-emitter voltage with base open; defines safe operating voltage in SMPS primary-side switching.
I_C	1 A - continuous collector current; supports up to ~15 W output in CFL and low-power adapter designs.
V_CE(sat)	1 V @ I_C = 0.5 A, I_B = 100 mA - low saturation voltage reduces conduction loss and self-heating during on-state.
h_FE	70–100 @ I_C = 5–20 mA - sufficient DC gain for direct base drive without complex bias networks in low-cost ballast ICs.
R_thJC	83 °C/W - junction-to-case thermal resistance; requires heatsinking or PCB copper area for sustained 1 A operation at T_J ≤ 150 °C.
T_J(max)	150 °C - maximum junction temperature; sets thermal derating limit for reliability in enclosed CFL housings.

Pinout & Package

STX0560 is housed in a standard TO-92 plastic package (also available in TO-92AP ammopack variant), with leads arranged in emitter-base-collector (E-B-C) order when viewed from the flat side with leads down.

Pin/Terminal	Circuit Role	Design Meaning
Lead 1 (left)	Emitter	Reference node for base drive and current return path; connected to ground or low-side return in CFL half-bridge drivers.
Lead 2 (center)	Base	Control input requiring ~100 mA peak drive for full saturation; sensitive to ESD and requires series resistor for current limiting.
Lead 3 (right)	Collector	High-voltage switching node tied to primary winding or DC bus; must be routed with clearance ≥ 4 mm for 600 V operation.

Key Features

Feature	Design Value
High-voltage multi-epitaxial planar process	Enables 800 V V_CES with stable RBSOA across temperature and lifetime, critical for mains-connected CFLs.
Cellular emitter + planar edge termination	Improves switching speed while preserving ruggedness against secondary breakdown during inductive turn-off transients.
TO-92 mechanical compatibility	Supports automated insertion and reflow-compatible lead bending; footprint matches legacy bipolar replacements in cost-sensitive lighting designs.
ECOPACK® compliant packaging	Meets RoHS and halogen-free requirements without performance trade-offs, enabling global CFL market access.

Applications

Compact Fluorescent Lamp (CFL) Ballast

Low-Power SMPS Battery Charger

Use Scenario: Drives resonant LC tank in electronic ballast circuits to ignite and regulate 5–25 W fluorescent tubes from 230 V AC mains.

IC Role / Device Role / Timing Role: Main high-voltage switch synchronized to zero-current switching (ZCS) by external oscillator; handles repetitive 600 V spikes.

Use Value: Cellular emitter structure ensures reliable turn-off under capacitive load conditions, preventing thermal runaway during lamp aging.

Use Scenario: Primary-side switch in 5–12 W flyback converters powering USB or NiMH battery chargers from universal AC input.

IC Role / Device Role / Timing Role: Fast-switching NPN transistor driven by discrete or integrated controller; operates at 20–50 kHz with <1 µs storage time target.

Use Value: Low V_CE(sat) and 83 °C/W R_thJC enable >75% efficiency and passive cooling in compact wall-plug adapters.

AC-DC Adapter for Consumer Electronics

LED Driver with Boost Topology

Use Scenario: Used in low-cost offline adapters for set-top boxes, routers, and audio accessories requiring <15 W output and no isolation feedback.

IC Role / Device Role / Timing Role: Self-oscillating switch in Royer or blocking oscillator configuration; base driven via transformer feedback winding.

Use Value: High h_FE range (70–100) allows stable oscillation startup across component tolerances and temperature (-25 to +85 °C).

Use Scenario: Switching element in non-isolated boost LED drivers for streetlight modules or commercial signage operating from 12–48 V DC input.

IC Role / Device Role / Timing Role: High-voltage NPN switch handling up to 400 V output swing; commutated by PWM controller with adjustable duty cycle.

Use Value: 600 V V_CEO rating provides margin above 350 V LED string voltage, reducing risk of avalanche-induced failure during transient overvoltage.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage NPN switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BU2508AX	V_CEO = 800 V, I_C = 1.5 A, R_thJC = 60 °C/W, TO-126 package	Higher power handling but larger footprint; requires different PCB layout and heatsink interface	Preferred where >1 A average current or lower thermal resistance is required; not drop-in for TO-92 board space
2SC4027	V_CEO = 600 V, I_C = 0.7 A, h_FE = 60–120, TO-92 package	Near-identical pinout and package; slightly lower I_C and wider h_FE spread	Suitable for lower-power CFLs (<12 W); verify base drive strength due to lower I_C rating

Compared with BU2508AX and 2SC4027, STX0560 offers optimal balance of TO-92 compatibility, 1 A rating, and 800 V V_CES margin-making it uniquely suited for cost-constrained, space-limited CFL and adapter designs where thermal management is passive and voltage stress is high.

Availability

STX0560 is available at Aetrix Electronics and suitable for compact fluorescent lamps (CFLs), low-power SMPS battery chargers, and AC-DC adapters requiring stable component supply and long-term manufacturing continuity.

Supply support for STX0560 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The STX0560 belongs to ST's high-voltage bipolar transistor product line, engineered specifically for energy-efficient lighting and low-cost offline power conversion where ruggedness, manufacturability, and regulatory compliance are prioritized.

FAQ

What is the maximum safe operating voltage for STX0560 in continuous conduction mode?

The STX0560 is rated for V_CEO = 600 V with base open, and V_CES = 800 V with base shorted to emitter. For continuous conduction in SMPS or CFL applications, design must stay within 600 V to ensure reliable operation under worst-case transients and temperature drift, per ST's absolute maximum ratings table.

Can STX0560 be used in place of a MOSFET in a flyback converter?

Yes, but with design adjustments: STX0560 requires active base drive (≥100 mA peak) and suffers higher conduction loss than a MOSFET due to V_CE(sat) = 1 V vs. R_DS(on) × I_D; it is best suited for low-frequency (≤50 kHz), low-power (<15 W) flybacks where gate-drive complexity and cost outweigh efficiency gains.

Does STX0560 have built-in protection features such as thermal shutdown or overcurrent sensing?

No. STX0560 is a discrete NPN bipolar transistor with no integrated protection circuitry. External components-including base current limiting, collector snubbers, and PCB copper thermal relief-are required to ensure safe operation within its RBSOA and thermal limits.

Is the TO-92AP variant electrically identical to the standard TO-92 version?

Yes. STX0560-AP differs only in packaging: it is supplied in ammopack (tape-and-reel compatible carrier) instead of bulk bag. All electrical, thermal, and mechanical specifications-including pinout, marking (X0560), and TO-92 footprint-are identical to the base STX0560 part.

STX0560 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bag

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 600 V

Vce Saturation (Max) @ Ib, Ic:: 1V @ 100mA, 500mA

Current - Collector Cutoff (Max):: 10µA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 70 @ 5mA, 5V

Power - Max:: 1.5 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92

STX0560 FAQ

1.How can I place an order for STX0560 through Aetrix?

Please submit a Request for Quotation (RFQ) for STX0560 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STX0560 reliable?

The price and inventory of STX0560 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STX0560 is usually 5 days.

3.What payment methods are accepted for STX0560?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STX0560 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STX0560?

STX0560 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STX0560 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STX0560?

For technical support, including STX0560 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STX0560 requirements.

6.How does Aetrix verify that STX0560 is sourced from the original manufacturer or authorized distributors?

All STX0560 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STX0560 meets industry standards.

7.What is the process for return or replacement of STX0560?

All STX0560 units undergo pre-shipment inspection (PSI). If there is an issue with STX0560, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STX0560 part is unused and in its original packaging.

Return procedure for STX0560:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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