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

Nexperia USA Inc. PZT2222A,115

Name: PZT2222A,115
Brand: Nexperia USA Inc.
SKU: PZT2222A,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PZT2222A,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-261-4, TO-261AA

Datasheet:: PZT2222A,115.pdf

Description:: TRANS NPN 40V 0.6A SOT-223

Quantity:: RFQ Add To RFQ list

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Inventory:45,591

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Product details

Overview

PZT2222A,115 from Nexperia is an NPN bipolar junction transistor (BJT) designed for medium-power switching and linear amplification in industrial and consumer electronics. It delivers 600 mA DC collector current, supports 40 V collector-emitter voltage, and achieves DC current gain (h_FE) of 100 at 150 mA/10 V - enabling robust drive capability in relay drivers and power supply control circuits.

For engineers reviewing the PZT2222A,115 datasheet, PZT2222A,115 pinout, PZT2222A,115 application, or PZT2222A,115 equivalent, key selection criteria include verified SOT223 thermal performance (R_{th j-a} = 109 K/W), low V_CEsat (≤300 mV at 150 mA/15 mA), and documented switching times (t_on = 35 ns, t_off = 250 ns) under standardized test conditions.

Technical Context

This device operates as a general-purpose NPN BJT with fixed emitter-base and collector-base junction structures optimized for stable DC gain across temperature. Its h_FE ranges from 35 to 300 depending on bias point (IC = 0.1–500 mA), and it maintains V_CEsat ≤ 1 V even at 500 mA/50 mA drive, supporting efficient saturation-mode switching.

Thermal design relies on the SOT223 package's exposed collector pad (1 cm² mounting area), delivering R_{th j-s} = 28 K/W to soldering point and enabling 1.15 W total power dissipation at T_amb ≤ 25 °C. Junction temperature is rated to 150 °C, with storage range spanning −65 °C to +150 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - Maximum safe collector-emitter voltage in open-base configuration; defines upper rail limit for switch operation.
I_C (DC)	600 mA - Continuous collector current rating; supports load switching up to ~0.6 A without forced cooling.
h_FE	100 @ 150 mA/10 V - Confirmed DC current gain enabling predictable base drive sizing for saturated switching.
V_CEsat	300 mV @ 150 mA/15 mA - Low saturation voltage reduces conduction loss and self-heating in power control stages.
t_off	250 ns - Measured turn-off time under defined pulse conditions; sets practical upper frequency limit for digital switching.
R_{th j-a}	109 K/W - Thermal resistance from junction to ambient on standard PCB; used to calculate max allowable power at given T_amb.
f_T	300 MHz - Transition frequency at 20 mA/20 V; indicates usable bandwidth for small-signal amplification.

Pinout & Package

The PZT2222A,115 is housed in a surface-mount SOT223 (SC-73) plastic package with an exposed collector pad for enhanced thermal conduction. The 4-lead configuration integrates dual collector terminals (pins 2 and 4) to improve current handling and heat spreading.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input node; requires current-limited drive (I_B ≤ 200 mA peak) to avoid damage.
2, 4	Collector	Power output node; electrically connected internally; both pins must be soldered to PCB copper for thermal and electrical integrity.
3	Emiter	Reference/output return path; tied to ground or low-side load return in common-emitter configurations.

Key Features

Feature	Design Value
High DC current capability	600 mA continuous collector current enables direct driving of relays, LEDs, and small solenoids without external buffers.
Low saturation voltage	V_CEsat ≤ 300 mV at 150 mA ensures <150 mW conduction loss per switch event, reducing thermal stress in high-duty-cycle applications.
Stable gain over temperature	h_FE ≥ 35 at −55 °C and ≥50 at 150 mA/1 V confirms reliable switching margin across industrial ambient ranges.
Fast switching performance	35 ns turn-on and 250 ns turn-off times support PWM frequencies up to ~1 MHz in non-critical timing applications.

Applications

Relay Driver Circuits

DC-DC Converter Switches

Use Scenario: Driving 12 V/500 mA electromagnetic relays in programmable logic controllers and HVAC control panels.

IC Role / Device Role / Timing Role: NPN switch operating in saturation mode to close relay coil circuit with minimal voltage drop.

Use Value: 300 mV V_CEsat ensures >97% coil voltage delivery, guaranteeing reliable relay pull-in at minimum supply voltage.

Use Scenario: Low-side switching element in 5 V/2 A buck converter feedback loop for consumer power adapters.

IC Role / Device Role / Timing Role: Pulse-width modulated power switch controlling energy transfer to output inductor.

Use Value: 250 ns t_off limits dead-time losses, enabling stable regulation at 500 kHz switching frequency.

LED Current Regulators

Linear Voltage Amplifiers

Use Scenario: Constant-current sink for high-brightness white LEDs in automotive interior lighting modules.

IC Role / Device Role / Timing Role: Emitter-follower configured transistor regulating LED string current via base voltage reference.

Use Value: h_FE ≥ 100 at 150 mA provides tight current matching across production units without trimming.

Use Scenario: Small-signal preamplifier stage in audio signal conditioning circuits for industrial sensors.

IC Role / Device Role / Timing Role: Common-emitter amplifier providing voltage gain with f_T = 300 MHz bandwidth headroom.

Use Value: 300 MHz f_T supports flat gain response up to 10 MHz, preserving transient fidelity in sensor analog outputs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBT2222ALT1G	SOT-23 package; lower I_C (600 mA vs. 800 mA peak); R_{th j-a} = 300 K/W (vs. 109 K/W).	Limited to low-power, space-constrained designs; unsuitable for sustained >200 mA loads without derating.	Select when board area is critical and thermal load is light; avoid in thermally demanding relay or motor drive roles.
ZTX653	SOT-89 package; higher V_CEO (100 V); h_FE = 100–300 at 100 mA; R_{th j-a} = 125 K/W.	Better suited for higher-voltage industrial controls (e.g., 24–48 V systems) but less optimal for 5–12 V compact designs.	Prefer for 40–100 V applications requiring same gain profile; verify PCB pad layout compatibility with SOT-89 footprint.

Compared with MMBT2222ALT1G and ZTX653, the PZT2222A,115 uniquely balances high current (600 mA), low thermal resistance (109 K/W), and proven SOT223 manufacturability - making it the preferred choice for cost-sensitive, medium-power switching where thermal reliability is non-negotiable.

Availability

PZT2222A,115 is available at Aetrix Electronics and suitable for relay driver circuits, DC-DC converter switches, and LED current regulators requiring stable component supply across industrial, computing, and consumer product lifecycles.

Supply support for PZT2222A,115 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 leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division. It serves automotive, industrial, computing, and consumer markets with high-volume, high-reliability components.

The PZT2222A,115 belongs to Nexperia's general-purpose bipolar transistor product line, engineered for robustness in medium-power switching and amplification tasks where thermal stability, consistent gain, and manufacturable packaging are essential.

FAQ

What is the maximum continuous collector current for PZT2222A,115?

The maximum DC collector current is 600 mA, specified under conditions of T_amb ≤ 25 °C with the device mounted on a PCB having a 1 cm² single-sided copper collector pad. At higher ambient temperatures or with reduced copper area, this rating must be derated using the published R_{th j-a} = 109 K/W value and thermal design equations.

Is PZT2222A,115 pin-compatible with the legacy PN2222A?

No - PZT2222A,115 uses the SOT223 package with four leads (pins 2 and 4 both connected to collector), whereas PN2222A is typically in TO-18 or SOT-23 packages with three distinct pins. Physical layout, thermal pad requirements, and PCB footprint differ significantly; direct replacement requires board redesign.

Does PZT2222A,115 have a built-in base-emitter resistor?

No - PZT2222A,115 is a standard discrete NPN BJT with no integrated resistors. External base current limiting (e.g., series resistor between microcontroller GPIO and pin 1) is required to ensure proper biasing and prevent overdrive, especially given its 200 mA peak base current limit.

Can PZT2222A,115 be used in linear amplifier configurations?

Yes - its h_FE specification covers multiple operating points (0.1–500 mA), and its f_T = 300 MHz supports small-signal amplification up to ~10 MHz. However, linear use requires careful attention to power dissipation (P_tot ≤ 1.15 W) and thermal management, particularly at V_CE > 5 V and I_C > 100 mA.

PZT2222A,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 40 V

Vce Saturation (Max) @ Ib, Ic:: 1V @ 50mA, 500mA

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

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

Power - Max:: 1.15 W

Frequency - Transition:: 300MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

PZT2222A,115 FAQ

1.How can I place an order for PZT2222A,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PZT2222A,115 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 PZT2222A,115 reliable?

The price and inventory of PZT2222A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZT2222A,115 is usually 5 days.

3.What payment methods are accepted for PZT2222A,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZT2222A,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PZT2222A,115?

PZT2222A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PZT2222A,115 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 PZT2222A,115?

For technical support, including PZT2222A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZT2222A,115 requirements.

6.How does Aetrix verify that PZT2222A,115 is sourced from the original manufacturer or authorized distributors?

All PZT2222A,115 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 PZT2222A,115 meets industry standards.

7.What is the process for return or replacement of PZT2222A,115?

All PZT2222A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZT2222A,115, 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 PZT2222A,115 part is unused and in its original packaging.

Return procedure for PZT2222A,115:

1.Submit a request within 90 days.

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

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