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

NXP Semiconductors 2PC1815Y,126

Name: 2PC1815Y,126
Brand: NXP Semiconductors
SKU: 2PC1815Y,126
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2PC1815Y,126

Manufacturer:: NXP Semiconductors

Category:: Single Bipolar Transistors

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

Datasheet:: 2PC1815Y,126.pdf

Description:: TRANS NPN 50V 0.15A TO-92-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2PC1815Y,126 from NXP Semiconductors (formerly Philips) is an NPN general-purpose bipolar junction transistor in TO-92 (SOT54) package, rated for 50 V V_CEO, 150 mA I_C, and 500 mW P_tot, with DC current gain h_FE of 120–240 at I_C = 2 mA, used in audio amplifier driver stages and low-power switching circuits.

For engineers reviewing the 2PC1815Y,126 datasheet, 2PC1815Y,126 pinout, 2PC1815Y,126 application, or 2PC1815Y,126 equivalent, key selection criteria include verified h_FE binning (Y-grade), TO-92 thermal resistance (250 K/W), V_CEsat ≤ 300 mV at 100 mA/10 mA drive, and compatibility with through-hole audio and signal conditioning designs.

Technical Context

This discrete NPN BJT operates in linear amplification and saturated switching modes, with base-emitter turn-on voltage ~0.7 V and transition frequency f_T = 80 MHz enabling audio-frequency and low-speed digital applications. Its 5 V V_EBO rating supports standard TTL/CMOS interface compatibility.

Thermal performance is defined for FR4 PCB mounting (R_th(j-a) = 250 K/W); maximum junction temperature is 150 °C, and storage temperature range spans −65 to +150 °C - suitable for industrial ambient environments without forced cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - supports operation in low-voltage power rails up to 48 V DC without breakdown
I_C (DC)	150 mA - sufficient for driving small relays, LED arrays, or pre-amplifier loads
h_FE	120–240 @ I_C = 2 mA - Y-grade bin ensures predictable biasing in Class-A audio stages
V_CEsat	≤ 300 mV @ I_C = 100 mA, I_B = 10 mA - enables low-loss saturation in switching applications
P_tot	500 mW @ T_amb ≤ 25 °C - defines maximum continuous dissipation on standard FR4 board
f_T	80 MHz - allows stable small-signal amplification up to mid-audio and sub-RF frequencies
R_th(j-a)	250 K/W - requires minimal heatsinking for ambient temperatures below 75 °C

Pinout & Package

Plastic single-ended leaded (through-hole) TO-92 package (SOT54, SC-43A), 3-pin vertical mount with 2.54 mm lead pitch. Dimensions: L = 14.5 mm, D = 4.8 mm, E = 4.2 mm, body diameter ≈ 4.5 mm.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring ~2 mA drive for full saturation; referenced to emitter for common-emitter configuration
2	Collector	High-side output node; connected to load supply rail in switch mode or collector resistor in amplifier mode
3	Emitter	Common reference terminal; tied to ground or negative rail in most configurations; carries full load current

Key Features

Feature	Design Value
Y-grade h_FE binning	Guaranteed 120–240 gain at 2 mA collector current - reduces need for emitter degeneration in bias networks
Low V_CEsat	≤300 mV enables <100 mW conduction loss at 100 mA - improves efficiency in battery-powered switches
TO-92 mechanical standardization	Compatible with legacy through-hole assembly lines and hand-soldering fixtures using JEDEC TO-92 footprint
150 °C junction rating	Supports operation in enclosed enclosures or near heat sources without derating below 70 °C ambient

Applications

Audio Pre-amplifier Stage	LED Driver Switch
Use Scenario: Low-noise voltage amplification in portable audio devices before power stage. IC Role / Device Role / Timing Role: NPN BJT configured in common-emitter topology for 20–20 kHz signal gain. Use Value: 10 dB noise figure and 80 MHz f_T preserve fidelity; Y-bin h_FE ensures consistent gain across production units.	Use Scenario: On/off control of indicator or status LEDs in industrial control panels. IC Role / Device Role / Timing Role: Saturated switch with base driven by microcontroller GPIO. Use Value: V_CEsat ≤ 300 mV minimizes LED current droop; 150 mA rating supports multi-LED strings.
Relay Driver Circuit	Signal Level Shifter
Use Scenario: Driving 5–12 V coil relays from 3.3 V logic outputs. IC Role / Device Role / Timing Role: Current amplifier translating logic-level signals into relay-coil current. Use Value: 50 V V_CEO safely handles relay back-EMF; 200 mA I_CM peak rating absorbs turn-off spikes.	Use Scenario: Interfacing 3.3 V MCU outputs to 5 V logic inputs in mixed-voltage systems. IC Role / Device Role / Timing Role: Active pull-up level translator in open-collector configuration. Use Value: 5 V V_EBO permits safe reverse-biasing of base-emitter junction during low-state transitions.

Audio Pre-amplifier Stage

LED Driver Switch

Use Scenario: Low-noise voltage amplification in portable audio devices before power stage.

IC Role / Device Role / Timing Role: NPN BJT configured in common-emitter topology for 20–20 kHz signal gain.

Use Value: 10 dB noise figure and 80 MHz f_T preserve fidelity; Y-bin h_FE ensures consistent gain across production units.

Use Scenario: On/off control of indicator or status LEDs in industrial control panels.

IC Role / Device Role / Timing Role: Saturated switch with base driven by microcontroller GPIO.

Use Value: V_CEsat ≤ 300 mV minimizes LED current droop; 150 mA rating supports multi-LED strings.

Relay Driver Circuit

Signal Level Shifter

Use Scenario: Driving 5–12 V coil relays from 3.3 V logic outputs.

IC Role / Device Role / Timing Role: Current amplifier translating logic-level signals into relay-coil current.

Use Value: 50 V V_CEO safely handles relay back-EMF; 200 mA I_CM peak rating absorbs turn-off spikes.

Use Scenario: Interfacing 3.3 V MCU outputs to 5 V logic inputs in mixed-voltage systems.

IC Role / Device Role / Timing Role: Active pull-up level translator in open-collector configuration.

Use Value: 5 V V_EBO permits safe reverse-biasing of base-emitter junction during low-state transitions.

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	h_FE = 200–450 (higher gain spread), same TO-92 package, V_CEO = 45 V	Slightly lower voltage margin; higher gain variability may require tighter bias design	Preferred where higher gain is needed and 45 V rating suffices
2N3904	V_CEO = 40 V, I_C = 200 mA, h_FE = 100–300, same pinout	Lower voltage rating limits use in 48 V systems; higher I_C supports heavier loads	Selected when 40 V operation is acceptable and higher current headroom is required

Compared with BC547B and 2N3904, the 2PC1815Y,126 offers tighter h_FE consistency (120–240) and superior 50 V V_CEO margin - advantageous in industrial 48 V bus interfaces and audio designs demanding predictable gain stability.

Availability

2PC1815Y,126 is available at Aetrix Electronics and suitable for audio amplifier driver stages, LED driver switches, and relay driver circuits requiring stable component supply and long-term obsolescence management.

Supply support for 2PC1815Y,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

NXP Semiconductors, formerly Philips Semiconductors, is a global leader in high-performance analog and discrete semiconductor solutions, headquartered in Eindhoven, Netherlands.

The 2PC1815 series belongs to NXP's legacy general-purpose bipolar transistor product line, designed specifically for cost-sensitive, reliability-critical linear amplification and low-speed switching in consumer, industrial, and automotive auxiliary systems.

FAQ

What is the h_FE range for 2PC1815Y,126 and how is it binned?

The 2PC1815Y,126 is Y-grade binned with guaranteed DC current gain (h_FE) between 120 and 240 when measured at V_CE = 6 V and I_C = 2 mA. This tighter specification than standard 2PC1815 variants enables more predictable bias point setting in amplifier and switching circuits without gain-dependent recalibration.

Is 2PC1815Y,126 pin-compatible with other TO-92 NPN transistors like BC547 or 2N3904?

Yes, 2PC1815Y,126 uses standard TO-92 (SOT54) pinout: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter - identical to BC547 and 2N3904. However, differences in V_CEO, h_FE, and saturation voltage mean electrical substitution requires validation in the target circuit.

What is the maximum power dissipation of 2PC1815Y,126 and under what conditions?

The 2PC1815Y,126 has a total power dissipation (P_tot) of 500 mW at ambient temperature ≤25 °C when mounted on an FR4 PCB. Derating is required above 25 °C at 4.0 mW/°C, reaching zero dissipation at 150 °C ambient - consistent with its 150 °C maximum junction temperature rating.

Does 2PC1815Y,126 have a PNP complement, and if so, what is it?

Yes, the PNP complement to 2PC1815Y,126 is 2PA1015, also in TO-92 package. Both share matched voltage ratings (50 V V_CEO/V_ECO), current capability (150 mA), and thermal characteristics, enabling complementary pair use in push-pull amplifier stages or H-bridge drivers.

Can 2PC1815Y,126 be used in RF applications?

The 2PC1815Y,126 has a transition frequency f_T of 80 MHz, making it suitable for narrowband RF amplification up to ~20–30 MHz with proper matching and biasing. It is not optimized for broadband or high-efficiency RF power stages, but functions reliably in low-power receiver front-ends and IF amplifiers.

2PC1815Y,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):: 150 mA

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

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 10mA, 100mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 120 @ 2mA, 6V

Power - Max:: 500 mW

Frequency - Transition:: 80MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

2PC1815Y,126 FAQ

1.How can I place an order for 2PC1815Y,126 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2PC1815Y,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 2PC1815Y,126 reliable?

The price and inventory of 2PC1815Y,126 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2PC1815Y,126 is usually 5 days.

3.What payment methods are accepted for 2PC1815Y,126?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2PC1815Y,126 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2PC1815Y,126?

2PC1815Y,126 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2PC1815Y,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 2PC1815Y,126?

For technical support, including 2PC1815Y,126 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2PC1815Y,126 requirements.

6.How does Aetrix verify that 2PC1815Y,126 is sourced from the original manufacturer or authorized distributors?

All 2PC1815Y,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 2PC1815Y,126 meets industry standards.

7.What is the process for return or replacement of 2PC1815Y,126?

All 2PC1815Y,126 units undergo pre-shipment inspection (PSI). If there is an issue with 2PC1815Y,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 2PC1815Y,126 part is unused and in its original packaging.

Return procedure for 2PC1815Y,126:

1.Submit a request within 90 days.

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

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