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

NXP Semiconductors 2PC1815GR,126

Name: 2PC1815GR,126
Brand: NXP Semiconductors
SKU: 2PC1815GR,126
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2PC1815GR,126

Manufacturer:: NXP Semiconductors

Category:: Single Bipolar Transistors

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

Datasheet:: 2PC1815GR,126.pdf

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

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Product details

Overview

2PC1815GR,126 from Nexperia (formerly Philips Semiconductors) is an NPN general-purpose transistor in TO-92 (SOT54) package, rated for 50 V V_CEO, 150 mA I_C, and 500 mW P_tot, with h_FE of 200–400 at I_C = 150 mA, used in audio amplifier driver stages and low-power switching circuits.

For engineers reviewing the 2PC1815GR,126 datasheet, 2PC1815GR,126 pinout, 2PC1815GR,126 application, or 2PC1815GR,126 equivalent, key selection criteria include DC current gain range, saturation voltage at 100 mA/10 mA drive, thermal resistance (250 K/W), transition frequency (80 MHz), and TO-92 mechanical compatibility for through-hole prototyping and legacy board replacement.

Technical Context

This discrete NPN bipolar junction transistor operates in linear amplification and saturated switching modes. Its design supports base-driven control with V_BE(sat) ≤ 1.1 V and V_CE(sat) ≤ 300 mV at I_C = 100 mA / I_B = 10 mA, enabling efficient low-voltage stage buffering.

It features low noise figure (≤10 dB at 1 kHz), f_T = 80 MHz, and C_c = 2.5–3.5 pF, making it suitable for audio-frequency signal conditioning where gain stability and minimal capacitive loading matter.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - maximum safe collector-emitter voltage under open-base condition; defines upper rail limit for single-supply amplifier stages
I_C (DC)	150 mA - continuous collector current rating; sets load-driving capability for small-signal output stages
h_FE	200–400 - DC current gain at V_CE = 6 V, I_C = 150 mA; determines required base drive for saturation in switching use
V_CE(sat)	≤300 mV - collector-emitter voltage in full saturation at I_C = 100 mA / I_B = 10 mA; minimizes conduction loss in on-state
f_T	80 MHz - transition frequency; confirms usable bandwidth up to mid-audio and low-RF frequencies
R_th(j-a)	250 K/W - junction-to-ambient thermal resistance on FR4 PCB; informs derating need above 25 °C ambient
P_tot	500 mW - total power dissipation at T_amb ≤ 25 °C; constrains simultaneous voltage/current operation in linear mode

Pinout & Package

2PC1815GR,126 is housed in a plastic single-ended leaded (through-hole) TO-92 package (SOT54, SC-43A), with 3 leads and standard 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	Current-controlled input node; requires ~10 mA drive for full saturation at 100 mA collector load
2	Collector	High-side output terminal; connects to supply rail in common-emitter switch or active load in amplifier
3	Emitter	Reference/output return path; tied to ground or bias network; carries full load current

Key Features

Feature	Design Value
Low saturation voltage	V_CE(sat) ≤ 300 mV ensures <1% voltage drop across transistor in on-state at 100 mA, preserving headroom
Controlled h_FE binning	GR grade guarantees h_FE 200–400 at 150 mA, enabling predictable base resistor selection without margin overdesign
Audio-optimized noise performance	F ≤ 10 dB at 1 kHz / 200 µA enables clean preamp and driver-stage use without added filtering
TO-92 mechanical standardization	SOT54 outline ensures compatibility with legacy sockets, wave-solder tooling, and hand-solder repair workflows

Applications

Audio Amplifier Driver Stage	Low-Voltage Switching Load Control
Use Scenario: Driving speaker loads or next-stage transistors in Class-A/B audio output sections with ±12 V rails. IC Role / Device Role / Timing Role: NPN emitter-follower or common-emitter current amplifier providing voltage gain and current boosting. Use Value: h_FE ≥ 200 and V_CE(sat) ≤ 300 mV minimize distortion and thermal rise during sustained 100 mA output peaks.	Use Scenario: Enabling/disabling LED arrays, relays, or small solenoids from microcontroller GPIO pins. IC Role / Device Role / Timing Role: Low-side switch controlled by 3.3 V or 5 V logic with series base resistor. Use Value: 150 mA I_C rating and 50 V V_CEO support 24 V industrial indicator loads without external protection diodes.
Signal-Level Voltage Shifting	Discrete Oscillator Active Device
Use Scenario: Level-shifting TTL/CMOS signals between incompatible logic families (e.g., 3.3 V MCU to 5 V peripheral). IC Role / Device Role / Timing Role: Common-emitter inverter with pull-up resistor, translating logic thresholds while adding gain. Use Value: f_T = 80 MHz allows clean edge response up to ~10 MHz, sufficient for UART, SPI, and I²C bus extension.	Use Scenario: Active element in Colpitts or Hartley oscillator designs for local clock generation below 20 MHz. IC Role / Device Role / Timing Role: Gain block sustaining oscillation via tuned LC tank feedback. Use Value: Low C_c (2.5–3.5 pF) and high f_T enable stable, low-phase-noise operation with minimal parasitic loading.

Audio Amplifier Driver Stage

Low-Voltage Switching Load Control

Use Scenario: Driving speaker loads or next-stage transistors in Class-A/B audio output sections with ±12 V rails.

IC Role / Device Role / Timing Role: NPN emitter-follower or common-emitter current amplifier providing voltage gain and current boosting.

Use Value: h_FE ≥ 200 and V_CE(sat) ≤ 300 mV minimize distortion and thermal rise during sustained 100 mA output peaks.

Use Scenario: Enabling/disabling LED arrays, relays, or small solenoids from microcontroller GPIO pins.

IC Role / Device Role / Timing Role: Low-side switch controlled by 3.3 V or 5 V logic with series base resistor.

Use Value: 150 mA I_C rating and 50 V V_CEO support 24 V industrial indicator loads without external protection diodes.

Signal-Level Voltage Shifting

Discrete Oscillator Active Device

Use Scenario: Level-shifting TTL/CMOS signals between incompatible logic families (e.g., 3.3 V MCU to 5 V peripheral).

IC Role / Device Role / Timing Role: Common-emitter inverter with pull-up resistor, translating logic thresholds while adding gain.

Use Value: f_T = 80 MHz allows clean edge response up to ~10 MHz, sufficient for UART, SPI, and I²C bus extension.

Use Scenario: Active element in Colpitts or Hartley oscillator designs for local clock generation below 20 MHz.

IC Role / Device Role / Timing Role: Gain block sustaining oscillation via tuned LC tank feedback.

Use Value: Low C_c (2.5–3.5 pF) and high f_T enable stable, low-phase-noise operation with minimal parasitic loading.

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	Lower h_FE (200–450 at 2 mA only; drops to ~110 at 150 mA); same TO-92 package	Less suitable for high-current saturation due to gain roll-off; better for low-I_C amplification	Select BC547B only if operating I_C ≤ 10 mA and gain consistency at low current is prioritized
2N3904	Higher V_CEO (40 V vs. 50 V), lower P_tot (625 mW but derates faster), h_FE 100–300 at 10 mA	Marginally less robust at 50 V rails; widely available but not binned for high-I_C gain	Choose 2N3904 for cost-sensitive, non-critical 30 V systems where GR-grade h_FE consistency is unnecessary

Compared with BC547B and 2N3904, 2PC1815GR,126 delivers guaranteed high-current h_FE stability, lower V_CE(sat), and tighter binning-critical for production audio drivers and industrial switching where thermal margin and drive predictability directly impact yield.

Availability

2PC1815GR,126 is available at Aetrix Electronics and suitable for audio amplifier driver stages, low-voltage switching load control, and signal-level voltage shifting requiring stable component supply and long-term obsolescence management.

Supply support for 2PC1815GR,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, formerly Philips Semiconductors, is a global leader in discrete, logic, and MOSFET solutions, specializing in high-volume, high-reliability standard semiconductors.

The 2PC1815 family was designed for cost-effective, robust general-purpose amplification and switching in consumer, industrial, and automotive auxiliary circuits where TO-92 form factor and proven reliability are essential.

FAQ

What is the h_FE range for 2PC1815GR,126 and how is it tested?

The 2PC1815GR,126 has a guaranteed DC current gain (h_FE) of 200–400 when measured at V_CE = 6 V and I_C = 150 mA. This specification is verified per the original Philips Semiconductors product data sheet (2004 Nov 05 issue) and applies specifically to the GR grade variant of the 2PC1815GR,126. The test condition reflects real-world saturated switching operation, not small-signal bias points.

Is 2PC1815GR,126 pin-compatible with other TO-92 NPN transistors like BC547 or 2N3904?

Yes, 2PC1815GR,126 uses the standard TO-92 (SOT54) pinout: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter - matching BC547, 2N3904, and most JEDEC TO-92 NPN devices. However, electrical characteristics-including h_FE behavior at high current and V_CE(sat)-differ meaningfully, so functional substitution requires validation in the target circuit.

What is the maximum allowable power dissipation for 2PC1815GR,126 at 50 °C ambient temperature?

At T_amb = 50 °C, the 2PC1815GR,126 must be derated from its 500 mW maximum at 25 °C. With R_th(j-a) = 250 K/W, the allowable power drops to approximately 400 mW (500 mW − (25 K × 4 mW/K)). This derating ensures junction temperature stays below 150 °C; actual safe dissipation depends on PCB copper area and airflow.

Does 2PC1815GR,126 have a PNP complement, and what is its part number?

Yes, the designated PNP complement for 2PC1815GR,126 is 2PA1015, also in TO-92 (SOT54) package. Both share matched voltage ratings (V_CEO = 50 V), current capability (150 mA), and thermal characteristics, enabling complementary pair use in push-pull amplifier outputs or H-bridge driver stages.

Can 2PC1815GR,126 be used in RF applications up to its 80 MHz f_T?

The 80 MHz f_T of 2PC1815GR,126 indicates usable gain up to ~10–20 MHz in practical amplifier configurations. It is not optimized for RF matching or high-Q tank stability; use is limited to low-frequency oscillator and broadband audio applications-not narrowband RF front-ends or transmitter stages.

2PC1815GR,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:: 200 @ 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

2PC1815GR,126 FAQ

1.How can I place an order for 2PC1815GR,126 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2PC1815GR,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 2PC1815GR,126 reliable?

The price and inventory of 2PC1815GR,126 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2PC1815GR,126 is usually 5 days.

3.What payment methods are accepted for 2PC1815GR,126?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2PC1815GR,126 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2PC1815GR,126?

2PC1815GR,126 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2PC1815GR,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 2PC1815GR,126?

For technical support, including 2PC1815GR,126 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2PC1815GR,126 requirements.

6.How does Aetrix verify that 2PC1815GR,126 is sourced from the original manufacturer or authorized distributors?

All 2PC1815GR,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 2PC1815GR,126 meets industry standards.

7.What is the process for return or replacement of 2PC1815GR,126?

All 2PC1815GR,126 units undergo pre-shipment inspection (PSI). If there is an issue with 2PC1815GR,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 2PC1815GR,126 part is unused and in its original packaging.

Return procedure for 2PC1815GR,126:

1.Submit a request within 90 days.

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

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