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

onsemi 2N4410_D74Z

Name: 2N4410_D74Z
Brand: onsemi
SKU: 2N4410_D74Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N4410_D74Z

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2N4410_D74Z.pdf

Description:: TRANS NPN 80V 0.2A TO-92-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2N4410_D74Z from Fairchild Semiconductor is an NPN general-purpose amplifier transistor in TO-92 radial ammo packaging (EOL code D74Z), rated for 80 V V_CEO, 200 mA I_C, and 625 mW P_D, designed for low-to-medium current amplification and switching in discrete analog and digital signal paths.

For engineers reviewing the 2N4410_D74Z datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CEO/I_C ratings, TO-92 mechanical compatibility, h_FE range (60–400 at 1–10 mA), thermal resistance (R_θJA = 200 °C/W), and EOL-specific tape-and-reel configuration (D74Z = collector-first radial ammo).

Technical Context

The 2N4410_D74Z implements a silicon planar NPN bipolar junction transistor structure optimized for general-purpose linear amplification and saturated switching up to 50 mA collector load. Its Process 16 fabrication ensures consistent h_FE distribution and low leakage (ICBO ≤ 10 nA at 25°C).

It operates across –55°C to +150°C junction temperature range with defined saturation behavior: V_CE(sat) = 0.2 V at I_C = 1.0 mA / I_B = 0.1 mA, and V_BE(sat) = 0.8 V under same conditions - enabling predictable biasing in emitter-follower and common-emitter configurations.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - maximum safe collector-emitter voltage before breakdown under open-base condition; defines upper rail limit in amplifier stages.
I_C (max)	200 mA - continuous DC collector current rating; supports switching loads up to ~100 mA with margin for thermal derating.
P_D	625 mW at 25°C - total power dissipation limit; requires thermal management above ambient due to 5.0 mW/°C derating slope.
h_FE	60–400 - DC current gain range at V_CE = 1.0 V; enables stable bias design across production lots for gain-critical amplifiers.
R_θJA	200 °C/W - junction-to-ambient thermal resistance in free-air; determines temperature rise under load without heatsinking.
C_ob	12 pF - output capacitance at V_CB = 10 V; impacts high-frequency response and stability in RF-adjacent amplifier designs.

Pinout & Package

2N4410_D74Z uses the standard TO-92 plastic package with lead configuration per Figure 3.0 (radial ammo): flat side faces down, adhesive tape on bottom side, and first wire off is collector (D74Z ordering variant). Pin assignment is fixed as Collector (lead 1), Base (lead 2), Emitter (lead 3) when viewed with flat side facing user and leads downward.

Pin/Terminal	Circuit Role	Design Meaning
Lead 1 (Collector)	Main current sink terminal	Connected to load or supply rail; carries full collector current; must be routed with adequate copper area for thermal relief.
Lead 2 (Base)	Control input for minority-carrier injection	Requires current-limited drive (e.g., via base resistor); sensitive to ESD; defines turn-on threshold and gain linearity.
Lead 3 (Emitter)	Current source terminal	Typically tied to ground or emitter resistor; establishes reference for V_BE bias and sets operating point stability.

Key Features

Feature	Design Value
High V_CEO / V_CBO ratio	80 V / 120 V enables robust operation in 48 V industrial bus interfaces without secondary clamping.
Low V_CE(sat)	0.2 V at 1 mA allows efficient switching in battery-powered logic-level translators and LED drivers.
Wide h_FE range	60–400 supports both precision biasing (high-h_FE) and current-mirror matching (low-h_FE) in analog ICs.
TO-92 radial ammo (D74Z)	Collector-first orientation simplifies automated placement in legacy SMT lines using standard pick-and-place feeders.

Applications

Audio Pre-amplifier Stage	Low-Voltage Relay Driver
Use Scenario: Amplifying microphone-level signals (1–10 mV) into line-level range (0.5–1 V) in portable audio recorders. IC Role / Device Role / Timing Role: NPN common-emitter small-signal amplifier with emitter degeneration for gain stability and bandwidth control. Use Value: h_FE ≥ 60 ensures sufficient transconductance at 1 mA bias; C_ib = 50 pF limits high-frequency roll-off below 20 kHz.	Use Scenario: Driving 12 V, 40 mA coil of electromechanical relay from microcontroller GPIO. IC Role / Device Role / Timing Role: Saturated switch with forced β = 10 to guarantee full turn-on and minimize power loss in collector path. Use Value: V_CE(sat) ≤ 0.2 V reduces conduction loss to < 8 mW; 200 mA I_C rating provides 5× safety margin over relay current.
Industrial Sensor Interface	Legacy TTL Logic Level Shifter
Use Scenario: Converting 4–20 mA current-loop sensor output to 0–3.3 V analog voltage for ADC input in PLC modules. IC Role / Device Role / Timing Role: Transimpedance amplifier stage with grounded-emitter configuration and precision feedback resistor. Use Value: Low ICBO (≤10 nA) prevents offset drift in high-impedance feedback networks; TJ range (–55°C to +150°C) supports unheated cabinet deployment.	Use Scenario: Interfacing 5 V TTL outputs to 3.3 V CMOS inputs in mixed-voltage embedded systems. IC Role / Device Role / Timing Role: Active pull-down switch translating logic HIGH (5 V) to LOW (0 V) while isolating voltage domains. Use Value: V_EBO = 5.0 V matches 3.3 V rail tolerance; fast turn-off (C_ob = 12 pF) maintains < 100 ns propagation delay.

Audio Pre-amplifier Stage

Low-Voltage Relay Driver

Use Scenario: Amplifying microphone-level signals (1–10 mV) into line-level range (0.5–1 V) in portable audio recorders.

IC Role / Device Role / Timing Role: NPN common-emitter small-signal amplifier with emitter degeneration for gain stability and bandwidth control.

Use Value: h_FE ≥ 60 ensures sufficient transconductance at 1 mA bias; C_ib = 50 pF limits high-frequency roll-off below 20 kHz.

Use Scenario: Driving 12 V, 40 mA coil of electromechanical relay from microcontroller GPIO.

IC Role / Device Role / Timing Role: Saturated switch with forced β = 10 to guarantee full turn-on and minimize power loss in collector path.

Use Value: V_CE(sat) ≤ 0.2 V reduces conduction loss to < 8 mW; 200 mA I_C rating provides 5× safety margin over relay current.

Industrial Sensor Interface

Legacy TTL Logic Level Shifter

Use Scenario: Converting 4–20 mA current-loop sensor output to 0–3.3 V analog voltage for ADC input in PLC modules.

IC Role / Device Role / Timing Role: Transimpedance amplifier stage with grounded-emitter configuration and precision feedback resistor.

Use Value: Low ICBO (≤10 nA) prevents offset drift in high-impedance feedback networks; TJ range (–55°C to +150°C) supports unheated cabinet deployment.

Use Scenario: Interfacing 5 V TTL outputs to 3.3 V CMOS inputs in mixed-voltage embedded systems.

IC Role / Device Role / Timing Role: Active pull-down switch translating logic HIGH (5 V) to LOW (0 V) while isolating voltage domains.

Use Value: V_EBO = 5.0 V matches 3.3 V rail tolerance; fast turn-off (C_ob = 12 pF) maintains < 100 ns propagation delay.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2N5551	Higher V_CEO (160 V), lower h_FE min (80), same TO-92 package	Better suited for higher-voltage amplifier stages (e.g., CRT deflection, flyback snubbers)	Select 2N5551 when >100 V collector swing is required; not drop-in due to h_FE and gain-bandwidth trade-offs.
PN2222A	Lower V_CEO (40 V), higher I_C (600 mA), identical pinout and h_FE range	Preferred for higher-current switching (e.g., solenoid drivers, motor commutation)	Choose PN2222A where load current exceeds 100 mA; verify V_CEO margin in 24 V systems.

Compared with 2N4410_D74Z, the 2N5551 offers higher voltage headroom but reduced low-current gain consistency, while the PN2222A delivers greater current capacity at lower voltage - making each suitable for distinct segments of the general-purpose BJT space without overlapping design envelopes.

Availability

2N4410_D74Z is available at Aetrix Electronics and suitable for industrial sensor interfaces, audio pre-amplifier stages, and low-voltage relay drivers requiring stable component supply and long-term obsolescence management.

Supply support for 2N4410_D74Z 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 company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.

The 2N4410_D74Z belongs to Fairchild's legacy NPN general-purpose transistor product line, engineered for cost-sensitive, reliability-critical analog and switching functions in industrial, consumer, and automotive-qualified systems.

FAQ

What is the pin configuration of the 2N4410_D74Z?

The 2N4410_D74Z uses a TO-92 package with collector-first radial ammo orientation (EOL code D74Z): when viewed with flat side facing the user and leads pointing downward, lead 1 is collector, lead 2 is base, and lead 3 is emitter. This matches Figure 3.0 in the official Fairchild TO-92 Tape and Reel Data document.

Does the 2N4410_D74Z support operation at elevated temperatures?

Yes, the 2N4410_D74Z is rated for junction temperatures from –55°C to +150°C. Its thermal resistance R_θJA = 200 °C/W means that at 25°C ambient and 625 mW dissipation, junction temperature reaches 150°C - the absolute maximum. Derating is required above 25°C at 5.0 mW/°C.

How does the 2N4410_D74Z compare to the 2N4401 in terms of performance?

The 2N4410_D74Z and 2N4401 share identical absolute maximum ratings (V_CEO = 80 V, I_C = 200 mA), but differ in h_FE: 2N4410_D74Z specifies h_FE = 60–400 at 1–10 mA, whereas 2N4401 guarantees h_FE ≥ 100 at 10 mA. The 2N4410_D74Z is better suited for low-bias, wide-gain-tolerance applications.

Is the 2N4410_D74Z RoHS compliant?

The 2N4410_D74Z was manufactured prior to RoHS enforcement and is not RoHS compliant. It contains lead in solder and packaging materials. For new designs, consider RoHS-compliant alternatives like the MMBT4401 or NSS40301MR6T1, which match key electrical parameters.

What is the significance of the 'D74Z' suffix in 2N4410_D74Z?

The 'D74Z' suffix identifies the specific packaging variant: radial ammo format with collector-first orientation, adhesive tape on bottom side, and flat side down. It corresponds to Fairchild's EOL code D74Z and ensures correct feeder setup and orientation during automated assembly of the 2N4410_D74Z.

2N4410_D74Z Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

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):: 200 mA

Voltage - Collector Emitter Breakdown (Max):: 80 V

Vce Saturation (Max) @ Ib, Ic:: 200mV @ 100µA, 1mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 60 @ 10mA, 1V

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

2N4410_D74Z FAQ

1.How can I place an order for 2N4410_D74Z through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N4410_D74Z 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 2N4410_D74Z reliable?

The price and inventory of 2N4410_D74Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N4410_D74Z is usually 5 days.

3.What payment methods are accepted for 2N4410_D74Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N4410_D74Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N4410_D74Z?

2N4410_D74Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N4410_D74Z 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 2N4410_D74Z?

For technical support, including 2N4410_D74Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N4410_D74Z requirements.

6.How does Aetrix verify that 2N4410_D74Z is sourced from the original manufacturer or authorized distributors?

All 2N4410_D74Z 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 2N4410_D74Z meets industry standards.

7.What is the process for return or replacement of 2N4410_D74Z?

All 2N4410_D74Z units undergo pre-shipment inspection (PSI). If there is an issue with 2N4410_D74Z, 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 2N4410_D74Z part is unused and in its original packaging.

Return procedure for 2N4410_D74Z:

1.Submit a request within 90 days.

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

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