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

onsemi 2N3417_D89Z

Name: 2N3417_D89Z
Brand: onsemi
SKU: 2N3417_D89Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N3417_D89Z

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2N3417_D89Z.pdf

Description:: TRANS NPN 50V 0.5A TO-92-3

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Product details

Overview

2N3417_D89Z from Fairchild Semiconductor is an NPN general-purpose amplifier and switch rated for continuous collector current up to 500 mA, with V_CEO = 50 V, V_BE(sat) = 0.6–1.3 V at I_C = 50 mA/I_B = 3 mA, and DC current gain (h_FE) of 180–540 at V_CE = 4.5 V/I_C = 2 mA. It is used in low-voltage switching and linear amplification circuits in industrial control interfaces and power supply feedback stages.

For engineers reviewing the 2N3417_D89Z datasheet, pinout, applications, or equivalent options, key selection criteria include its TO-92 package compatibility, guaranteed h_FE range, thermal resistance (R_θJA = 200 °C/W), and suitability for 300 mA switching loads with low saturation voltage.

Technical Context

The 2N3417_D89Z operates as a silicon NPN bipolar junction transistor fabricated using Fairchild's Process 10. Its design supports both linear amplification (with h_fe ≥ 180 at 1 kHz) and saturated switching (V_CE(sat) ≤ 0.3 V), with breakdown ratings ensuring safe operation at V_CEO = V_CB0 = 50 V and V_EB0 = 5.0 V.

Thermal performance is defined by R_θJC = 83.3 °C/W and R_θJA = 200 °C/W, enabling reliable operation across –55 °C to +150 °C junction temperature range. The device is not rated for life-support applications and requires derating above 25 °C at 5.0 mW/°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum allowable collector-emitter voltage before breakdown under open-base conditions.
I_C (continuous)	500 mA - Continuous collector current capability; supports switching loads up to 300 mA per typical application guidance.
h_FE	180–540 - DC current gain range at V_CE = 4.5 V, I_C = 2 mA; enables predictable biasing in amplifier and switch designs.
V_CE(sat)	0.3 V max - Collector-emitter saturation voltage at I_C = 50 mA / I_B = 3 mA; minimizes conduction loss in switching mode.
T_J range	–55 °C to +150 °C - Operating junction temperature range; defines usable ambient envelope with appropriate PCB thermal relief.
P_D	625 mW at 25 °C - Total power dissipation limit; derates linearly at 5.0 mW/°C above 25 °C ambient.

Pinout & Package

2N3417_D89Z is supplied in the TO-92 plastic package (Fairchild PKG Code 92), with standard lead configuration: Emitter (E), Base (B), Collector (C) arranged left-to-right when viewing the flat side with leads downward.

Pin/Terminal	Circuit Role	Design Meaning
E (Emitter)	Current sink terminal	Reference node for bias network; connects to ground or low-side return path in common-emitter configurations.
B (Base)	Control input	Receives drive current to modulate collector current; requires series resistor to limit I_B and ensure saturation.
C (Collector)	Current source terminal	Connects to load and supply rail; carries amplified or switched output current up to 500 mA.

Key Features

Feature	Design Value
High h_FE range	180–540 ensures stable DC bias point across process variation and temperature, reducing need for trim components.
Low V_CE(sat)	≤0.3 V at rated I_C/I_B reduces power loss and self-heating during switching duty cycles.
Robust breakdown ratings	V_CEO = V_CB0 = 50 V and V_EB0 = 5.0 V support use in 24 V industrial logic and relay driver circuits.
TO-92 mechanical standardization	Compatible with legacy through-hole assembly equipment and manual prototyping workflows without retooling.

Applications

Industrial Relay Drivers	DC-DC Converter Feedback
Use Scenario: Driving 24 V coil relays in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: NPN switch providing galvanically isolated coil current path with base-driven saturation control. Use Value: V_CE(sat) ≤ 0.3 V limits relay driver power loss to <15 mW at 50 mA, improving thermal margin in dense I/O modules.	Use Scenario: Error amplifier in adjustable buck converter feedback loop. IC Role / Device Role / Timing Role: Linear amplifier stage comparing reference voltage to output-sense signal. Use Value: h_FE ≥ 180 ensures sufficient open-loop gain for stable compensation with minimal phase shift at 1 kHz.
LED Current Switches	Signal-Level Amplifiers
Use Scenario: Constant-current LED driver for status indicators in HMI panels. IC Role / Device Role / Timing Role: Common-emitter switch regulating LED current via emitter resistor feedback. Use Value: I_C = 500 mA rating allows driving multiple parallel LEDs while maintaining V_CE(sat)-based current accuracy.	Use Scenario: Pre-amplifier stage for analog sensor signals in data acquisition front-ends. IC Role / Device Role / Timing Role: Low-noise, medium-gain small-signal amplifier with h_fe ≥ 180 at 1 kHz. Use Value: Matched h_FE binning (180–540) enables consistent gain calibration across production batches.

Industrial Relay Drivers

DC-DC Converter Feedback

Use Scenario: Driving 24 V coil relays in programmable logic controller (PLC) output modules.

IC Role / Device Role / Timing Role: NPN switch providing galvanically isolated coil current path with base-driven saturation control.

Use Value: V_CE(sat) ≤ 0.3 V limits relay driver power loss to <15 mW at 50 mA, improving thermal margin in dense I/O modules.

Use Scenario: Error amplifier in adjustable buck converter feedback loop.

IC Role / Device Role / Timing Role: Linear amplifier stage comparing reference voltage to output-sense signal.

Use Value: h_FE ≥ 180 ensures sufficient open-loop gain for stable compensation with minimal phase shift at 1 kHz.

LED Current Switches

Signal-Level Amplifiers

Use Scenario: Constant-current LED driver for status indicators in HMI panels.

IC Role / Device Role / Timing Role: Common-emitter switch regulating LED current via emitter resistor feedback.

Use Value: I_C = 500 mA rating allows driving multiple parallel LEDs while maintaining V_CE(sat)-based current accuracy.

Use Scenario: Pre-amplifier stage for analog sensor signals in data acquisition front-ends.

IC Role / Device Role / Timing Role: Low-noise, medium-gain small-signal amplifier with h_fe ≥ 180 at 1 kHz.

Use Value: Matched h_FE binning (180–540) enables consistent gain calibration across production batches.

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
PN2222A	h_FE min = 100 (vs. 180 for 2N3417_D89Z); V_CEO = 40 V (vs. 50 V)	Suitable for lower-voltage (<30 V) switching where gain consistency is less critical	Select when cost sensitivity outweighs need for higher V_CEO or guaranteed h_FE floor.
BC547B	h_FE = 200–450; I_C = 100 mA (vs. 500 mA); TO-92 compatible but lower power rating	Better suited for signal amplification than power switching due to lower I_C limit	Prefer for low-current analog stages where thermal margin is not constrained.

Compared with PN2222A and BC547B, the 2N3417_D89Z offers superior voltage headroom (50 V), higher current capability (500 mA), and tighter minimum h_FE, making it optimal for industrial 24 V relay drivers and feedback amplifiers requiring robust DC gain stability.

Availability

2N3417_D89Z is available at Aetrix Electronics and suitable for industrial relay drivers, DC-DC converter feedback circuits, LED current switches, and signal-level amplifiers requiring stable component supply and long-term manufacturability.

Supply support for 2N3417_D89Z 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 devices before its acquisition by ON Semiconductor in 2016.

The 2N3417_D89Z belongs to Fairchild's legacy general-purpose bipolar transistor product line, designed specifically for cost-sensitive industrial and consumer switching and amplification applications requiring proven reliability in TO-92 packaging.

FAQ

What is the maximum continuous collector current rating for the 2N3417_D89Z?

The 2N3417_D89Z has a maximum continuous collector current (I_C) rating of 500 mA at T_A = 25 °C. This rating assumes proper PCB thermal relief and derating per the 5.0 mW/°C thermal coefficient above ambient. In practice, typical switching applications limit I_C to 300 mA to maintain safe junction temperatures.

Does the 2N3417_D89Z have a specified h_FE range, and how is it tested?

Yes, the 2N3417_D89Z specifies h_FE = 180–540 at V_CE = 4.5 V and I_C = 2.0 mA, measured under DC conditions. This range reflects unit-to-unit variation within the same wafer lot and is verified during final test screening. The 2N3417_D89Z binning distinguishes it from the 2N3416 (h_FE = 75–225) in the same family.

What is the pin configuration of the 2N3417_D89Z in the TO-92 package?

The 2N3417_D89Z uses the standard TO-92 pinout: when viewing the flat side of the package with leads pointing downward, the left-to-right pin order is Emitter (E), Base (B), Collector (C). This matches JEDEC TO-92 outline and is confirmed in Fairchild's 2N3416/2N3417 datasheet Figure 1.0.

Can the 2N3417_D89Z be used in linear amplifier applications?

Yes, the 2N3417_D89Z is explicitly characterized for linear operation, with small-signal current gain (h_fe) ≥ 180 at I_C = 2.0 mA, V_CE = 4.5 V, and f = 1.0 kHz. Its low noise and stable h_FE make it suitable for pre-amplifier and error amplifier stages where moderate gain and bandwidth are required.

Is the 2N3417_D89Z RoHS compliant and halogen-free?

The 2N3417_D89Z was manufactured prior to full RoHS enforcement and does not carry formal RoHS or halogen-free certification. Fairchild's documentation from the Rev B datasheet era (1997–2001) makes no claim of compliance. For new designs, consult ON Semiconductor's current equivalents or verify material declarations via Aetrix's traceable sourcing records.

2N3417_D89Z 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):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 3mA, 50mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 180 @ 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

2N3417_D89Z FAQ

1.How can I place an order for 2N3417_D89Z through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N3417_D89Z 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 2N3417_D89Z reliable?

The price and inventory of 2N3417_D89Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N3417_D89Z is usually 5 days.

3.What payment methods are accepted for 2N3417_D89Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N3417_D89Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N3417_D89Z?

2N3417_D89Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N3417_D89Z 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 2N3417_D89Z?

For technical support, including 2N3417_D89Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N3417_D89Z requirements.

6.How does Aetrix verify that 2N3417_D89Z is sourced from the original manufacturer or authorized distributors?

All 2N3417_D89Z 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 2N3417_D89Z meets industry standards.

7.What is the process for return or replacement of 2N3417_D89Z?

All 2N3417_D89Z units undergo pre-shipment inspection (PSI). If there is an issue with 2N3417_D89Z, 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 2N3417_D89Z part is unused and in its original packaging.

Return procedure for 2N3417_D89Z:

1.Submit a request within 90 days.

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

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