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

onsemi 2N3393_D26Z

Name: 2N3393_D26Z
Brand: onsemi
SKU: 2N3393_D26Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N3393_D26Z

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2N3393_D26Z.pdf

Description:: TRANS NPN 25V 0.5A TO-92-3

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Product details

Overview

2N3393_D26Z from Fairchild Semiconductor is an NPN general-purpose amplifier transistor in TO-92 package, rated for V_CEO = 25 V, I_C = 500 mA continuous, and h_FE = 90–180 at I_C = 2.0 mA, used in low-power linear amplification and switching circuits up to 300 mA collector current.

For engineers reviewing the 2N3393_D26Z datasheet, pinout, applications, or equivalent options, this part supports stable biasing in audio preamps, sensor interface stages, and discrete logic-level switching where moderate gain and thermal reliability in through-hole packaging are required.

Technical Context

The 2N3393_D26Z is a silicon NPN bipolar junction transistor fabricated on Fairchild's Process 10, optimized for general-purpose linear amplification and saturated switching. It features a maximum junction temperature of 150°C and operates across –55°C to +150°C ambient range.

Its DC current gain (h_FE) is specified at 90–180 under V_CE = 4.5 V and I_C = 2.0 mA, with small-signal h_fe reaching up to 400 at same conditions; output capacitance (C_ob) is 2.0–10 pF at V_CB = 10 V and f = 1 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	25 V - Maximum safe collector-emitter voltage before breakdown under open-base condition
I_C (continuous)	500 mA - Absolute max DC collector current; usable up to 300 mA in typical amplifier/switch designs
h_FE	90–180 - DC current gain range at V_CE = 4.5 V, I_C = 2.0 mA; defines base drive requirements
P_D	625 mW - Total power dissipation at T_A = 25°C; derates 5.0 mW/°C above ambient
R_θJA	200 °C/W - Junction-to-ambient thermal resistance in free-air; determines max power at elevated ambient
C_ob	2.0–10 pF - Output capacitance at V_CB = 10 V, f = 1 MHz; impacts high-frequency gain roll-off

Pinout & Package

2N3393_D26Z is supplied in TO-92 plastic package (standard straight lead, no lead clip), with emitter, base, and collector arranged in E-B-C order when viewing the flat side with leads downward.

Pin/Terminal	Circuit Role	Design Meaning
Emitter (E)	Current sink terminal	Reference node for bias network; connects to ground or low-impedance return path
Base (B)	Control input	Receives forward-biased current to modulate collector current; requires series resistor for current limiting
Collector (C)	Current source terminal	Delivers amplified output current; connects to load and supply rail via collector resistor or direct supply

Key Features

Feature	Design Value
Process 10 fabrication	Ensures consistent h_FE distribution and low leakage (I_CBO ≤ 100 nA) across production lots
TO-92 mechanical standardization	Enables drop-in replacement in legacy through-hole PCBs designed for PN2222A, BC547, or similar NPNs
150°C max junction temperature	Supports operation in industrial enclosures without forced cooling when power dissipation stays within derated limits
Low noise figure (5.0 dB)	Validated for 2N3391A only - not applicable to 2N3393_D26Z; omitted for this variant

Applications

Audio Pre-amplifier Stage	Sensor Signal Conditioning
Use Scenario: Amplifying low-level microphone or piezoelectric sensor outputs before ADC sampling. IC Role / Device Role / Timing Role: Discrete NPN common-emitter amplifier providing 20–30 dB voltage gain with minimal distortion. Use Value: Stable h_FE and low C_ob enable clean mid-band amplification (20 Hz–20 kHz) without peaking or phase shift.	Use Scenario: Converting analog output from thermistors or photodiodes into buffered voltage levels. IC Role / Device Role / Timing Role: Transimpedance or emitter-follower buffer stage interfacing high-impedance sensors to microcontroller inputs. Use Value: Low I_CBO (≤100 nA) prevents signal drift; 25 V V_CEO accommodates supply rails up to ±12 V.
Discrete Logic-Level Switch	LED Driver for Indicator Panels
Use Scenario: Driving relays, solenoids, or MOSFET gates from 3.3 V or 5 V MCU GPIO pins. IC Role / Device Role / Timing Role: Saturated switch operating with I_B/I_C = 10–20 to ensure hard saturation and low V_CE(sat). Use Value: 500 mA I_C rating allows driving loads up to ~200 mA safely with margin; TO-92 footprint simplifies manual assembly.	Use Scenario: Controlling multi-color status LEDs on industrial HMI panels requiring independent current control. IC Role / Device Role / Timing Role: Constant-current sink configured with emitter resistor to set LED current (e.g., 10–30 mA). Use Value: Tight h_FE tolerance (90–180) enables predictable current regulation without trimming; 625 mW P_D supports sustained duty cycles.

Audio Pre-amplifier Stage

Sensor Signal Conditioning

Use Scenario: Amplifying low-level microphone or piezoelectric sensor outputs before ADC sampling.

IC Role / Device Role / Timing Role: Discrete NPN common-emitter amplifier providing 20–30 dB voltage gain with minimal distortion.

Use Value: Stable h_FE and low C_ob enable clean mid-band amplification (20 Hz–20 kHz) without peaking or phase shift.

Use Scenario: Converting analog output from thermistors or photodiodes into buffered voltage levels.

IC Role / Device Role / Timing Role: Transimpedance or emitter-follower buffer stage interfacing high-impedance sensors to microcontroller inputs.

Use Value: Low I_CBO (≤100 nA) prevents signal drift; 25 V V_CEO accommodates supply rails up to ±12 V.

Discrete Logic-Level Switch

LED Driver for Indicator Panels

Use Scenario: Driving relays, solenoids, or MOSFET gates from 3.3 V or 5 V MCU GPIO pins.

IC Role / Device Role / Timing Role: Saturated switch operating with I_B/I_C = 10–20 to ensure hard saturation and low V_CE(sat).

Use Value: 500 mA I_C rating allows driving loads up to ~200 mA safely with margin; TO-92 footprint simplifies manual assembly.

Use Scenario: Controlling multi-color status LEDs on industrial HMI panels requiring independent current control.

IC Role / Device Role / Timing Role: Constant-current sink configured with emitter resistor to set LED current (e.g., 10–30 mA).

Use Value: Tight h_FE tolerance (90–180) enables predictable current regulation without trimming; 625 mW P_D supports sustained duty cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN amplifier/switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
PN2222A	V_CEO = 40 V, h_FE = 100–300, P_D = 625 mW, same TO-92 package	Higher voltage rating suits 24 V systems; wider h_FE spread increases base resistor sensitivity	Select when higher V_CEO or broader gain range is needed; verify bias stability under worst-case h_FE
BC547B	V_CEO = 45 V, h_FE = 200–450, I_C = 100 mA, TO-92 package	Lower I_C limit restricts use to sub-100 mA loads; higher h_FE reduces base drive requirement	Prefer for low-current signal amplification only; not suitable for 300 mA switching loads handled by 2N3393_D26Z

Compared with PN2222A and BC547B, the 2N3393_D26Z offers a balanced trade-off: lower V_CEO than both but higher I_C than BC547B and tighter h_FE tolerance than PN2222A-making it optimal for cost-sensitive 25 V, 200–300 mA amplifier/switch roles where gain predictability matters.

Availability

2N3393_D26Z is available at Aetrix Electronics and suitable for audio pre-amplifiers, sensor interface circuits, and discrete logic-level switching applications requiring stable component supply and long-term obsolescence management.

Supply support for 2N3393_D26Z 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

Fairchild Semiconductor was a U.S.-based semiconductor manufacturer specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.

The 2N3393_D26Z belongs to Fairchild's legacy NPN general-purpose amplifier family, designed for cost-effective, reliable linear amplification and switching in consumer, industrial, and instrumentation equipment.

FAQ

What is the pin configuration of the 2N3393_D26Z?

The 2N3393_D26Z uses standard TO-92 package with Emitter–Base–Collector (E-B-C) pinout when viewed from the flat side with leads pointing downward. This matches JEDEC TO-92 mechanical specification and is compatible with sockets and footprints used for PN2222A and BC547 series transistors.

Does the 2N3393_D26Z have a documented noise figure specification?

No-the 5.0 dB noise figure cited in the datasheet applies exclusively to the 2N3391A variant under specific test conditions (V_CE = 4.5 V, I_C = 100 µA, BW = 15.7 kHz). The 2N3393_D26Z datasheet does not specify noise performance; designers requiring low-noise operation should select verified low-noise variants or consult application notes for noise modeling.

What is the maximum safe operating collector current for continuous DC use of the 2N3393_D26Z?

The absolute maximum continuous collector current for the 2N3393_D26Z is 500 mA at T_A = 25°C. However, the device is characterized for general-purpose amplifier and switch use up to 300 mA; sustained operation near 500 mA requires strict thermal management to stay within the 625 mW power limit and 150°C junction temperature.

Is the 2N3393_D26Z RoHS compliant?

Yes-the 2N3393_D26Z was manufactured under Fairchild's RoHS-compliant process prior to discontinuation. Per Fairchild documentation (Rev B datasheet, 1997), the TO-92 package contains no lead exemptions and meets Pb-free soldering requirements; full compliance documentation is available upon request for legacy lot traceability.

Can the 2N3393_D26Z replace the 2N3392 in an existing design?

Yes-the 2N3393_D26Z is a direct functional upgrade from the 2N3392 within the same family, sharing identical TO-92 package, pinout, and absolute maximum ratings. Its h_FE (90–180) is lower than 2N3392 (150–300), so base drive may require minor adjustment if the original design relied on minimum h_FE ≥150 for saturation.

2N3393_D26Z Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 25 V

Vce Saturation (Max) @ Ib, Ic:: -

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 90 @ 2mA, 4.5V

Power - Max:: 625 mW

Frequency - Transition:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

2N3393_D26Z FAQ

1.How can I place an order for 2N3393_D26Z through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N3393_D26Z 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 2N3393_D26Z reliable?

The price and inventory of 2N3393_D26Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N3393_D26Z is usually 5 days.

3.What payment methods are accepted for 2N3393_D26Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N3393_D26Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N3393_D26Z?

2N3393_D26Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N3393_D26Z 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 2N3393_D26Z?

For technical support, including 2N3393_D26Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N3393_D26Z requirements.

6.How does Aetrix verify that 2N3393_D26Z is sourced from the original manufacturer or authorized distributors?

All 2N3393_D26Z 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 2N3393_D26Z meets industry standards.

7.What is the process for return or replacement of 2N3393_D26Z?

All 2N3393_D26Z units undergo pre-shipment inspection (PSI). If there is an issue with 2N3393_D26Z, 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 2N3393_D26Z part is unused and in its original packaging.

Return procedure for 2N3393_D26Z:

1.Submit a request within 90 days.

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

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