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

NXP Semiconductors MPSA06,126

Name: MPSA06,126
Brand: NXP Semiconductors
SKU: MPSA06,126
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPSA06,126

Manufacturer:: NXP Semiconductors

Category:: Single Bipolar Transistors

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

Datasheet:: MPSA06,126.pdf

Description:: TRANS NPN 80V 0.5A TO-92-3

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Product details

Overview

MPSA06,126 from Nexperia (formerly Philips Semiconductors) is an NPN general-purpose bipolar junction transistor in a TO-92 (SOT54/SC-43A) through-hole package, rated for 80 V V_CEO, 500 mA I_C, and 625 mW P_tot, commonly used in low-voltage switching and small-signal amplification circuits in consumer electronics power supplies and interface logic.

For engineers reviewing the MPSA06,126 datasheet, MPSA06,126 pinout, MPSA06,126 application, or MPSA06,126 equivalent, key selection considerations include its DC current gain (h_FE ≥100 at I_C = 10–100 mA), V_CE(sat) ≤ 250 mV, f_T ≥ 100 MHz, thermal resistance (R_th(j-a) = 200 K/W), and compatibility with standard FR4 PCB mounting.

Technical Context

The MPSA06,126 operates as a silicon NPN BJT optimized for linear amplification and saturated switching in low-power analog and digital circuits. Its design supports V_CB and V_CE up to 80 V, V_EB up to 5 V, and handles peak collector currents up to 1 A with appropriate pulse conditions.

It exhibits consistent h_FE across 10–100 mA collector current range, low saturation voltage under I_C/I_B = 10, and transition frequency of ≥100 MHz - enabling use in audio preamplifiers, relay drivers, and TTL-compatible level-shifting stages where moderate speed and gain stability are required.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - maximum safe collector-emitter voltage with base open; defines upper rail limit in switching applications.
I_C (DC)	500 mA - continuous collector current rating; sets max steady-state load drive capability.
P_tot	625 mW at T_amb ≤25°C - total dissipation limit on FR4 board; determines thermal derating curve.
h_FE	≥100 at V_CE=1 V, I_C=10 mA - minimum DC current gain for reliable biasing in amplifier designs.
f_T	≥100 MHz - transition frequency at V_CE=2 V, I_C=10 mA; supports audio and low-speed digital signal handling.
V_CE(sat)	≤250 mV at I_C=100 mA, I_B=10 mA - low saturation voltage ensures minimal conduction loss in switch mode.
R_th(j-a)	200 K/W - junction-to-ambient thermal resistance on FR4; informs heatsinking requirements for sustained operation.

Pinout & Package

Package: TO-92 (SOT54 / SC-43A), plastic single-ended leaded through-hole package with 3 leads; standardized outline per IEC 60134, compatible with manual soldering and wave soldering processes.

Pin/Terminal	Circuit Role	Design Meaning
1	Collector	Main current output terminal; connects to load or supply rail in common-emitter configurations.
2	Base	Control input; requires current-limited drive (e.g., via series resistor) to bias transistor into active/saturation.
3	Emitter	Current return path; typically grounded or connected to reference node in most amplifier/switch topologies.

Key Features

Feature	Design Value
Low-voltage switching capability	Rated for 80 V V_CEO - suitable for 24 V and 48 V industrial control rails without derating.
Stable DC current gain	h_FE ≥100 over 10–100 mA I_C range - enables predictable bias design across operating conditions.
Low saturation voltage	V_CE(sat) ≤250 mV at I_C/I_B = 10 - reduces power loss and self-heating in high-duty-cycle switching.
High-frequency response	f_T ≥100 MHz - supports audio amplification and fast edge detection in digital interface circuits.

Applications

Audio Pre-amplifier Stage	Relay Driver Circuit
Use Scenario: Amplifying weak microphone or line-level signals before ADC or further processing in portable audio devices. IC Role / Device Role / Timing Role: Small-signal NPN amplifier in common-emitter configuration with fixed bias or emitter degeneration. Use Value: h_FE ≥100 and f_T ≥100 MHz ensure adequate gain-bandwidth product for 20 Hz–20 kHz fidelity without oscillation.	Use Scenario: Driving electromagnetic relays (e.g., 12 V/500 mA coil) from microcontroller GPIO pins. IC Role / Device Role / Timing Role: Saturated switch with base current limiting resistor, configured in common-emitter topology. Use Value: V_CE(sat) ≤250 mV minimizes coil voltage drop and ensures reliable relay pull-in at low drive current.
TTL-Level Shifter	LED Current Switch
Use Scenario: Converting 3.3 V logic outputs to 5 V or 12 V compatible levels for legacy peripherals. IC Role / Device Role / Timing Role: Digital inverter or level translator using active-low output stage with pull-up resistor. Use Value: Fast turn-on/off due to f_T ≥100 MHz and low C_ob (implied by construction) supports >1 MHz signal edges.	Use Scenario: Controlling indicator or status LEDs in instrumentation panels and power supplies. IC Role / Device Role / Timing Role: Constant-current switch with emitter resistor or direct drive from logic source. Use Value: 500 mA I_C rating allows parallel LED strings or high-brightness single-LED operation with margin.

Audio Pre-amplifier Stage

Relay Driver Circuit

Use Scenario: Amplifying weak microphone or line-level signals before ADC or further processing in portable audio devices.

IC Role / Device Role / Timing Role: Small-signal NPN amplifier in common-emitter configuration with fixed bias or emitter degeneration.

Use Value: h_FE ≥100 and f_T ≥100 MHz ensure adequate gain-bandwidth product for 20 Hz–20 kHz fidelity without oscillation.

Use Scenario: Driving electromagnetic relays (e.g., 12 V/500 mA coil) from microcontroller GPIO pins.

IC Role / Device Role / Timing Role: Saturated switch with base current limiting resistor, configured in common-emitter topology.

Use Value: V_CE(sat) ≤250 mV minimizes coil voltage drop and ensures reliable relay pull-in at low drive current.

TTL-Level Shifter

LED Current Switch

Use Scenario: Converting 3.3 V logic outputs to 5 V or 12 V compatible levels for legacy peripherals.

IC Role / Device Role / Timing Role: Digital inverter or level translator using active-low output stage with pull-up resistor.

Use Value: Fast turn-on/off due to f_T ≥100 MHz and low C_ob (implied by construction) supports >1 MHz signal edges.

Use Scenario: Controlling indicator or status LEDs in instrumentation panels and power supplies.

IC Role / Device Role / Timing Role: Constant-current switch with emitter resistor or direct drive from logic source.

Use Value: 500 mA I_C rating allows parallel LED strings or high-brightness single-LED operation with margin.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC547B,114	V_CEO = 45 V, h_FE = 200–450 (min 110), P_tot = 500 mW	Lower voltage rating limits use in 48 V systems; higher h_FE eases bias design but increases sensitivity to leakage.	Select when tighter h_FE tolerance and lower V_CEO are acceptable for 5–24 V logic interfaces.
PN2222A	V_CEO = 40 V, I_C = 800 mA, P_tot = 625 mW, f_T ≈ 250 MHz	Higher f_T and I_C, but reduced voltage headroom; not interchangeable in 80 V circuits without redesign.	Prefer for higher-speed switching or higher-current loads below 40 V, especially where gain-bandwidth trade-off favors speed.

Compared with BC547B,114 and PN2222A, the MPSA06,126 uniquely balances 80 V robustness, 500 mA drive, and 100 MHz f_T - making it optimal for mid-voltage industrial interface and audio amplification where both breakdown margin and bandwidth matter.

Availability

MPSA06,126 is available at Aetrix Electronics and suitable for industrial control interfaces, consumer audio signal conditioning, and embedded power management requiring stable component supply and long-term obsolescence resilience.

Supply support for MPSA06,126 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

Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET solutions rooted in Philips' legacy of quality and manufacturability.

The MPSA06,126 belongs to Nexperia's general-purpose bipolar transistor family, engineered for cost-effective, robust performance in analog amplification and digital switching across consumer, industrial, and automotive-qualified applications.

FAQ

What is the maximum collector-emitter voltage rating for MPSA06,126?

The MPSA06,126 has a maximum collector-emitter voltage (V_CEO) rating of 80 V under open-base conditions. This rating is defined per IEC 60134 Absolute Maximum Ratings and must not be exceeded in circuit operation, even transiently, to avoid permanent device failure. Derating is recommended above 25°C ambient temperature per the thermal resistance specification.

Is MPSA06,126 suitable for audio amplifier applications?

Yes, the MPSA06,126 is suitable for low-noise audio pre-amplifier stages due to its h_FE ≥100 at 10–100 mA, f_T ≥100 MHz, and low V_CE(sat). It is commonly used in common-emitter configurations with emitter degeneration resistors to achieve stable gain and bandwidth across the 20 Hz–20 kHz audio band in portable and desktop audio equipment.

What is the pin configuration of MPSA06,126 in the TO-92 package?

The MPSA06,126 uses standard TO-92 pinout: Pin 1 is Collector, Pin 2 is Base, and Pin 3 is Emitter - verified per Philips/Nexperia datasheet Figure 1 and package outline SOT54. When viewing the flat side of the TO-92 package with leads pointing downward, pins are numbered left-to-right as 1–2–3.

Does MPSA06,126 have a PNP complement part number?

Yes, the PNP complement to MPSA06,126 is MPSA56,126 - also manufactured by Nexperia in the same TO-92 (SOT54) package. Both share matching voltage ratings (80 V V_CEO), current capabilities (500 mA), and thermal characteristics, enabling complementary pair use in push-pull amplifier and H-bridge driver designs.

What is the thermal resistance from junction to ambient for MPSA06,126?

The thermal resistance from junction to ambient (R_th(j-a)) for MPSA06,126 is 200 K/W when mounted on a standard FR4 printed-circuit board, as specified in the datasheet under Thermal Characteristics. This value assumes no additional heatsinking and forms the basis for calculating allowable power dissipation at elevated ambient temperatures.

MPSA06,126 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

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

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 80 V

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 10mA, 100mA

Current - Collector Cutoff (Max):: 50nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 100mA, 1V

Power - Max:: 625 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

MPSA06,126 FAQ

1.How can I place an order for MPSA06,126 through Aetrix?

Please submit a Request for Quotation (RFQ) for MPSA06,126 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 MPSA06,126 reliable?

The price and inventory of MPSA06,126 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSA06,126 is usually 5 days.

3.What payment methods are accepted for MPSA06,126?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSA06,126 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPSA06,126?

MPSA06,126 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPSA06,126 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 MPSA06,126?

For technical support, including MPSA06,126 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSA06,126 requirements.

6.How does Aetrix verify that MPSA06,126 is sourced from the original manufacturer or authorized distributors?

All MPSA06,126 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 MPSA06,126 meets industry standards.

7.What is the process for return or replacement of MPSA06,126?

All MPSA06,126 units undergo pre-shipment inspection (PSI). If there is an issue with MPSA06,126, 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 MPSA06,126 part is unused and in its original packaging.

Return procedure for MPSA06,126:

1.Submit a request within 90 days.

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

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