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

onsemi 50A02SS-TL-E

Name: 50A02SS-TL-E
Brand: onsemi
SKU: 50A02SS-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 50A02SS-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: SC-81

Datasheet:: 50A02SS-TL-E.pdf

Description:: TRANS PNP 50V 0.4A 3-SSFP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

50A02SS-TL-E from onsemi is a PNP bipolar junction transistor rated for –50 V V_CEO, –400 mA continuous collector current, and featuring low V_CE(sat) of –120 mV at I_C = –100 mA / I_B = –10 mA. It operates as a high-speed switching device in low-frequency amplifier and muting circuits, with f_T = 690 MHz and R_CE(sat) ≈ 210 mΩ.

For engineers reviewing the 50A02SS-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include its SC-81 (SSFP) ultrasmall package, verified –50 V breakdown ratings, confirmed h_FE range of 200–500, and documented switching times (t_on = 30 ns, t_stg = 170 ns, t_f = 30 ns).

Technical Context

This PNP BJT employs standard planar epitaxial construction optimized for low-saturation operation and fast switching. Its gain-bandwidth product of 690 MHz supports stable amplification up to mid-VHF frequencies under specified bias conditions (V_CE = –10 V, I_C = –50 mA), while the 210 mΩ typical R_CE(sat) enables efficient current control in compact load-switching topologies.

The device is characterized across temperature (–25°C to +75°C) for h_FE, V_CE(sat), and V_BE(sat), with guaranteed V_(BR)CEO = –50 V and V_(BR)CBO = –50 V at I_C = –1 mA and –10 μA respectively. Its Cob = 3.8 pF at V_CB = –10 V ensures minimal Miller effect in switching applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	–50 V - Maximum allowable collector-to-emitter voltage before breakdown; defines safe operating voltage headroom in PNP switch configurations.
I_C (cont)	–400 mA - Continuous DC collector current rating; sets maximum steady-state load drive capability without derating.
V_CE(sat)	–120 mV (max) at I_C = –100 mA / I_B = –10 mA - Low saturation voltage minimizes conduction loss and self-heating during ON-state operation.
h_FE	200–500 at V_CE = –2 V, I_C = –10 mA - DC current gain range determines required base drive for reliable saturation in switching designs.
f_T	690 MHz - Gain-bandwidth product confirms usable frequency response for small-signal amplification and fast edge control.
C_ob	3.8 pF at V_CB = –10 V, f = 1 MHz - Output capacitance affects switching speed and gate-drive interaction in high-frequency switching.
t_on/t_f	30 ns / 30 ns - Verified turn-on and fall times enable use in sub-30 MHz digital switching and pulse-width modulation circuits.

Pinout & Package

50A02SS-TL-E is housed in an ultrasmall SSFP package (JEITA/ JEDEC SC-81), measuring 1.4 × 1.4 × 0.6 mm with 0.45 mm lead pitch. The package supports automated surface-mount assembly and thermal dissipation of 200 mW on a standard 20 × 30 × 1.6 mm glass epoxy board.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal for forward-biased PNP operation; requires negative current relative to emitter to activate conduction.
2	Emitter	Current source terminal in PNP configuration; connected to higher potential rail in high-side switch layouts.
3	Collector	Current sink terminal; delivers load current to ground or lower-potential node when device is saturated.

Key Features

Feature	Design Value
Low V_CE(sat)	–120 mV max ensures <12 mW conduction loss at 100 mA, reducing thermal stress in space-constrained PCBs.
Ultrasmall SSFP package	1.4 × 1.4 mm footprint enables placement in wearables, hearing aids, and other miniaturized consumer electronics.
High f_T	690 MHz allows stable small-signal amplification up to ~200 MHz with adequate gain margin in RF front-end stages.
Verified switching speed	30 ns turn-on and fall times support PWM dimming, audio muting, and logic-level translation up to 10 MHz.
Robust breakdown ratings	–50 V V_CEO/V_CBO provides margin against transients in 24 V and 36 V industrial control rails.

Applications

Audio Muting Circuit	Low-Voltage Motor Driver Stage
Use Scenario: Silent power-up/power-down sequencing in portable audio codecs and headphone amplifiers. IC Role / Device Role / Timing Role: PNP switch enabling/disabling signal path between DAC output and amplifier input. Use Value: Confirmed V_CE(sat) ≤ –120 mV prevents audible pop/click by ensuring <100 µV residual offset during mute transitions.	Use Scenario: Directional control and enable/disable for brushed DC motors in battery-powered robotics. IC Role / Device Role / Timing Role: High-side PNP switch regulating motor supply rail connection to battery. Use Value: –400 mA I_C rating and 210 mΩ R_CE(sat) support 300 mA continuous motor current with <100 mW dissipation per device.
Low-Frequency Signal Amplifier	Power Rail Mux / OR-ing
Use Scenario: Pre-amplification stage for sensor signals in medical thermometers and analog front-ends. IC Role / Device Role / Timing Role: Common-emitter amplifier biased at I_C = –10 mA with h_FE = 350 typical. Use Value: 690 MHz f_T and 200–500 h_FE ensure stable 10× voltage gain up to 100 kHz with <0.5% THD.	Use Scenario: Diode-OR replacement in dual-power-supply systems requiring zero-forward-drop rail selection. IC Role / Device Role / Timing Role: Active PNP switch implementing low-loss, controlled-turn-on power path selection. Use Value: –120 mV V_CE(sat) yields <40% lower forward drop than Schottky diodes, improving efficiency in 3.3 V/5 V backup systems.

Audio Muting Circuit

Low-Voltage Motor Driver Stage

Use Scenario: Silent power-up/power-down sequencing in portable audio codecs and headphone amplifiers.

IC Role / Device Role / Timing Role: PNP switch enabling/disabling signal path between DAC output and amplifier input.

Use Value: Confirmed V_CE(sat) ≤ –120 mV prevents audible pop/click by ensuring <100 µV residual offset during mute transitions.

Use Scenario: Directional control and enable/disable for brushed DC motors in battery-powered robotics.

IC Role / Device Role / Timing Role: High-side PNP switch regulating motor supply rail connection to battery.

Use Value: –400 mA I_C rating and 210 mΩ R_CE(sat) support 300 mA continuous motor current with <100 mW dissipation per device.

Low-Frequency Signal Amplifier

Power Rail Mux / OR-ing

Use Scenario: Pre-amplification stage for sensor signals in medical thermometers and analog front-ends.

IC Role / Device Role / Timing Role: Common-emitter amplifier biased at I_C = –10 mA with h_FE = 350 typical.

Use Value: 690 MHz f_T and 200–500 h_FE ensure stable 10× voltage gain up to 100 kHz with <0.5% THD.

Use Scenario: Diode-OR replacement in dual-power-supply systems requiring zero-forward-drop rail selection.

IC Role / Device Role / Timing Role: Active PNP switch implementing low-loss, controlled-turn-on power path selection.

Use Value: –120 mV V_CE(sat) yields <40% lower forward drop than Schottky diodes, improving efficiency in 3.3 V/5 V backup systems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBT5011LT1G	V_CEO = –50 V, I_C = –500 mA, V_CE(sat) = –150 mV (max) at I_C = –100 mA - higher current rating but higher saturation voltage.	Preferred where >400 mA peak load current is required; less optimal for ultra-low-loss muting due to +30 mV higher V_CE(sat).	Select MMBT5011LT1G when higher I_C margin is critical and slight increase in conduction loss is acceptable.
DXT5011ST116	V_CEO = –50 V, I_C = –400 mA, V_CE(sat) = –100 mV (typ) - tighter V_CE(sat) spec but SC-74 package (larger than SSFP).	Better for designs needing lowest possible saturation voltage; unsuitable where 1.4 × 1.4 mm footprint is mandatory.	Choose DXT5011ST116 when minimizing V_CE(sat) is prioritized over board area, and SC-74 layout compatibility exists.

Compared with 50A02SS-TL-E, MMBT5011LT1G offers higher current headroom at the cost of increased conduction loss, while DXT5011ST116 delivers superior saturation performance in a larger package-making 50A02SS-TL-E the optimal balance of size, loss, and reliability for miniaturized PNP switching.

Availability

50A02SS-TL-E is available at Aetrix Electronics and suitable for audio muting circuits, low-voltage motor driver stages, and low-frequency amplifier designs requiring stable component supply and Pb-free compliance.

Supply support for 50A02SS-TL-E 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The 50A02SS-TL-E belongs to onsemi's general-purpose bipolar transistor product line, engineered specifically for space-constrained, low-loss switching and amplification in portable and battery-powered systems.

FAQ

What is the maximum continuous collector current rating for the 50A02SS-TL-E?

The 50A02SS-TL-E has a maximum continuous collector current (I_C) rating of –400 mA at T_a = 25°C. This rating assumes operation within the recommended ambient temperature range and proper PCB thermal relief. Derating applies above 25°C per the PC–Ta curve in the datasheet, with full derating to zero at 150°C junction temperature.

Does the 50A02SS-TL-E support high-speed switching applications?

Yes, the 50A02SS-TL-E supports high-speed switching with verified t_on = 30 ns, t_stg = 170 ns, and t_f = 30 ns under standard test conditions (V_CC = –25 V, I_C = –200 mA). These values make it suitable for PWM-based dimming, audio muting, and digital logic interface applications up to 10 MHz.

What package type does the 50A02SS-TL-E use, and what are its dimensions?

The 50A02SS-TL-E uses the SSFP package (JEDEC SC-81), measuring 1.4 mm × 1.4 mm × 0.6 mm with 0.45 mm lead pitch. Its embossed tape-and-reel packaging (TL) contains 8,000 units per reel and is RoHS-compliant and Pb-free, as indicated by the "-E" suffix.

How does the 50A02SS-TL-E compare to standard small-signal PNP transistors in terms of saturation voltage?

The 50A02SS-TL-E achieves a typical V_CE(sat) of –60 mV and a maximum of –120 mV at I_C = –100 mA / I_B = –10 mA-significantly lower than many legacy PNP transistors (e.g., BC807 series: –300 mV max). This low saturation voltage directly reduces power loss and improves efficiency in high-duty-cycle switching applications.

Is the 50A02SS-TL-E suitable for automotive applications?

The 50A02SS-TL-E is not AEC-Q101 qualified and is not recommended for automotive safety-critical systems. It is designed for commercial and industrial applications including consumer electronics, portable devices, and industrial controls where ambient temperatures remain within –55°C to +150°C storage and ≤125°C operating limits.

50A02SS-TL-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SC-81

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 400 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 120mV @ 10mA, 100mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 10mA, 2V

Power - Max:: 200 mW

Frequency - Transition:: 690MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 3-SSFP

50A02SS-TL-E FAQ

1.How can I place an order for 50A02SS-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 50A02SS-TL-E 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 50A02SS-TL-E reliable?

The price and inventory of 50A02SS-TL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 50A02SS-TL-E is usually 5 days.

3.What payment methods are accepted for 50A02SS-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 50A02SS-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 50A02SS-TL-E?

50A02SS-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 50A02SS-TL-E 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 50A02SS-TL-E?

For technical support, including 50A02SS-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 50A02SS-TL-E requirements.

6.How does Aetrix verify that 50A02SS-TL-E is sourced from the original manufacturer or authorized distributors?

All 50A02SS-TL-E 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 50A02SS-TL-E meets industry standards.

7.What is the process for return or replacement of 50A02SS-TL-E?

All 50A02SS-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with 50A02SS-TL-E, 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 50A02SS-TL-E part is unused and in its original packaging.

Return procedure for 50A02SS-TL-E:

1.Submit a request within 90 days.

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

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