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

onsemi MPS2222RLRA

Name: MPS2222RLRA
Brand: onsemi
SKU: MPS2222RLRA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPS2222RLRA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 Long Body, Formed Leads

Datasheet:: MPS2222RLRA.pdf

Description:: TRANS NPN 30V 0.6A TO92

Quantity:: RFQ Add To RFQ list

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Inventory:4,113

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Product details

Overview

MPS2222RLRA from onsemi is an NPN silicon general-purpose transistor in TO-92 package, rated for 30 V_CEO, 600 mA continuous collector current, and 625 mW power dissipation at 25°C ambient. It delivers DC current gain (h_FE) of 35–300 across 0.1–500 mA, with V_CE(sat) ≤ 1.6 V at I_C = 150 mA / I_B = 15 mA, and is widely used in low-voltage switching and amplification circuits such as LED drivers and signal buffering.

For engineers reviewing the MPS2222RLRA datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, thermal behavior, switching timing data, TO-92 terminal mapping, and validated alternative transistors for discrete BJT design and replacement decisions.

Technical Context

This NPN bipolar junction transistor operates in active, saturation, and cutoff regions with defined breakdown limits: V_CEO = 30 V, V_CBO = 60 V, and V_EBO = 5.0 V. Its f_T = 250 MHz supports RF and high-speed digital switching up to ~100 MHz under specified bias conditions.

Thermal resistance R_JA = 200°C/W and R_JC = 83.3°C/W define its junction-to-ambient and junction-to-case heat transfer capability, while switching times (t_d ≤ 10 ns, t_r ≤ 25 ns, t_s ≤ 225 ns, t_f ≤ 60 ns) are characterized at V_CC = 30 V and I_C = 150 mA with I_B1 = I_B2 = 15 mA.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - Maximum allowable collector-emitter voltage before breakdown in common-emitter configuration.
I_C (continuous)	600 mA - Continuous collector current limit defining safe linear or switching operation without thermal runaway.
P_D @ T_A = 25°C	625 mW - Maximum power dissipation at room ambient; derates 5.0 mW/°C above 25°C.
h_FE @ I_C = 10 mA	35–300 - DC current gain range determining base drive requirements for target collector current.
V_CE(sat) @ I_C/I_B = 10	≤ 1.6 V - Saturation voltage drop impacting conduction loss and logic-level compatibility in switch applications.
f_T	250 MHz - Frequency at which small-signal current gain \|h_fe\| drops to unity, indicating usable bandwidth for RF amplification.
t_s (storage)	≤ 225 ns - Time required for minority carriers to clear during turn-off, critical for high-frequency switching efficiency.

Pinout & Package

Package: TO-92 (Case 29-11, Style 1), epoxy-molded plastic with 3 leads. Standard lead formation supports through-hole PCB assembly and manual prototyping.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit path; referenced to ground or negative rail in common-emitter configurations.
2	Base	Control terminal; requires precise current limiting to achieve desired h_FE-based collector drive.
3	Collector	Current entry path; connects to load or supply rail depending on circuit topology (e.g., low-side switch).

Key Features

Feature	Design Value
Pb-Free packaging option	Available per J-STD-609; MPS2222RLRA is standard leaded version, but Pb-free variant (MPS2222RLRAG) exists for RoHS compliance.
High f_T bandwidth	250 MHz enables use in audio preamplifiers, oscillator stages, and medium-speed digital interface buffering.
Low V_BE(sat)	≤ 1.3 V at I_C/I_B = 10 ensures reliable turn-on with 3.3 V or 5 V microcontroller GPIOs without level-shifting.
Wide h_FE range	35–300 across operating currents allows flexible biasing strategies-fixed-base or emitter-degenerated designs.
TO-92 tape-and-reel delivery	2000 units/reel format supports automated SMT placement when used with lead-forming adapters or wave-solder processes.

Applications

LED Driver Circuit	Microcontroller Interface Buffer
Use Scenario: Driving 20–100 mA indicator LEDs from 3.3 V or 5 V MCU outputs. IC Role / Device Role / Timing Role: Low-side NPN switch controlling LED current path to ground. Use Value: V_CE(sat) ≤ 1.6 V minimizes power loss and heat generation; h_FE ≥ 35 ensures sufficient gain for 5–10 mA base drive.	Use Scenario: Level-shifting and current boosting between low-drive MCUs and higher-current peripherals. IC Role / Device Role / Timing Role: Signal amplifier and current buffer in digital control lines (e.g., relay coils, optocoupler inputs). Use Value: Fast switching (t_r ≤ 25 ns, t_f ≤ 60 ns) supports clean edge transitions up to 10 MHz clock rates.
Analog Signal Amplifier	Power Supply Enable Switch
Use Scenario: Small-signal preamplification in sensor front-ends or audio line stages. IC Role / Device Role / Timing Role: Common-emitter amplifier with emitter degeneration for stable gain and linearity. Use Value: f_T = 250 MHz and h_fe ≥ 300 at 1 mA enable wideband amplification up to ~50 MHz with proper biasing.	Use Scenario: Enabling/disabling 12 V or 24 V subsystems (e.g., fans, sensors) via MCU GPIO. IC Role / Device Role / Timing Role: High-side or low-side power switch controlled by logic-level input. Use Value: V_CBO = 60 V and I_C = 600 mA allow safe operation with inductive kickback suppression and moderate load currents.

LED Driver Circuit

Microcontroller Interface Buffer

Use Scenario: Driving 20–100 mA indicator LEDs from 3.3 V or 5 V MCU outputs.

IC Role / Device Role / Timing Role: Low-side NPN switch controlling LED current path to ground.

Use Value: V_CE(sat) ≤ 1.6 V minimizes power loss and heat generation; h_FE ≥ 35 ensures sufficient gain for 5–10 mA base drive.

Use Scenario: Level-shifting and current boosting between low-drive MCUs and higher-current peripherals.

IC Role / Device Role / Timing Role: Signal amplifier and current buffer in digital control lines (e.g., relay coils, optocoupler inputs).

Use Value: Fast switching (t_r ≤ 25 ns, t_f ≤ 60 ns) supports clean edge transitions up to 10 MHz clock rates.

Analog Signal Amplifier

Power Supply Enable Switch

Use Scenario: Small-signal preamplification in sensor front-ends or audio line stages.

IC Role / Device Role / Timing Role: Common-emitter amplifier with emitter degeneration for stable gain and linearity.

Use Value: f_T = 250 MHz and h_fe ≥ 300 at 1 mA enable wideband amplification up to ~50 MHz with proper biasing.

Use Scenario: Enabling/disabling 12 V or 24 V subsystems (e.g., fans, sensors) via MCU GPIO.

IC Role / Device Role / Timing Role: High-side or low-side power switch controlled by logic-level input.

Use Value: V_CBO = 60 V and I_C = 600 mA allow safe operation with inductive kickback suppression and moderate load currents.

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
PN2222A	V_CEO = 40 V, V_CE(sat) ≤ 1.0 V at same I_C/I_B; otherwise identical TO-92 pinout and h_FE range.	Higher breakdown margin suits 36 V automotive or industrial supplies where 30 V headroom is insufficient.	Select PN2222A when system voltage exceeds 30 V or lower saturation loss is required at 150 mA.
BC547B	V_CEO = 45 V, I_C = 100 mA max, h_FE = 200–450 at 2 mA; smaller power rating (500 mW) and different gain binning.	Better suited for low-power signal amplification than switching loads >100 mA due to lower I_C rating.	Choose BC547B for battery-powered analog stages where gain consistency and low noise (NF = 10 dB) outweigh current capacity needs.

Compared with PN2222A and BC547B, MPS2222RLRA offers balanced performance for cost-sensitive 30 V, 600 mA switching tasks-higher current than BC547B and more standardized availability than PN2222A in tape-and-reel formats.

Availability

MPS2222RLRA is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface buffering, analog signal amplification, and power supply enable switching requiring stable component supply and long-term manufacturability.

Supply support for MPS2222RLRA 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

MPS2222RLRA belongs to the legacy MPS2222 family of general-purpose NPN transistors designed for broad utility in discrete switching and amplification-emphasizing reliability, manufacturability, and compatibility with legacy designs.

FAQ

What is the maximum collector-emitter voltage rating for MPS2222RLRA?

The maximum collector-emitter voltage (V_CEO) for MPS2222RLRA is 30 V DC. This rating defines the highest voltage that can be applied between collector and emitter with the base open before breakdown occurs. Exceeding this value risks permanent device failure. The MPS2222RLRA datasheet confirms this parameter under "Maximum Ratings" and verifies it with test conditions of I_C = 10 mA and I_B = 0.

Is MPS2222RLRA RoHS-compliant?

MPS2222RLRA is a leaded (SnPb) TO-92 device and therefore not RoHS-compliant. However, onsemi offers the Pb-free variant MPS2222RLRAG, which shares identical electrical specifications and mechanical dimensions. Both parts are listed in the official ordering table, with the "G" suffix denoting Pb-free construction per J-STD-609.

What is the typical DC current gain (h_FE) of MPS2222RLRA at 10 mA collector current?

At I_C = 10 mA and V_CE = 10 V, the DC current gain (h_FE) of MPS2222RLRA ranges from 35 to 300. This wide spread reflects process variation and is confirmed in the "Electrical Characteristics" table. Designers should use the minimum value (35) for worst-case base drive calculations to ensure saturation across all units.

Can MPS2222RLRA be used in high-frequency amplifier applications?

Yes-MPS2222RLRA has an f_T of 250 MHz, making it suitable for RF amplification up to ~50 MHz with appropriate biasing and layout. Its small-signal current gain (h_fe) remains >100 at 10 mA, and input capacitance (C_ibo) is 30 pF, supporting stable gain in tuned or broadband configurations below its unity-gain frequency.

What is the thermal resistance junction-to-ambient (R_JA) for MPS2222RLRA in free-air conditions?

The thermal resistance junction-to-ambient (R_JA) for MPS2222RLRA is 200°C/W under standard TO-92 mounting conditions (no heatsink, free-air convection). This value means the junction temperature rises 200°C for every watt dissipated. At its rated 625 mW, the theoretical ΔT is 125°C-so ambient must stay ≤ 25°C to avoid exceeding the 150°C max junction temperature.

MPS2222RLRA Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 Long Body, Formed Leads

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 600 mA

Voltage - Collector Emitter Breakdown (Max):: 30 V

Vce Saturation (Max) @ Ib, Ic:: 1.6V @ 50mA, 500mA

Current - Collector Cutoff (Max):: 10nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 150mA, 10V

Power - Max:: 625 mW

Frequency - Transition:: 250MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92 (TO-226)

MPS2222RLRA FAQ

1.How can I place an order for MPS2222RLRA through Aetrix?

Please submit a Request for Quotation (RFQ) for MPS2222RLRA 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 MPS2222RLRA reliable?

The price and inventory of MPS2222RLRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPS2222RLRA is usually 5 days.

3.What payment methods are accepted for MPS2222RLRA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPS2222RLRA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPS2222RLRA?

MPS2222RLRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPS2222RLRA 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 MPS2222RLRA?

For technical support, including MPS2222RLRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPS2222RLRA requirements.

6.How does Aetrix verify that MPS2222RLRA is sourced from the original manufacturer or authorized distributors?

All MPS2222RLRA 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 MPS2222RLRA meets industry standards.

7.What is the process for return or replacement of MPS2222RLRA?

All MPS2222RLRA units undergo pre-shipment inspection (PSI). If there is an issue with MPS2222RLRA, 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 MPS2222RLRA part is unused and in its original packaging.

Return procedure for MPS2222RLRA:

1.Submit a request within 90 days.

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

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