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

onsemi 2N3417_D26Z

Name: 2N3417_D26Z
Brand: onsemi
SKU: 2N3417_D26Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N3417_D26Z

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2N3417_D26Z.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:4,775

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Product details

Overview

2N3417_D26Z from Fairchild Semiconductor is a TO-92 packaged NPN general-purpose amplifier and switch, rated for 50 V V_CEO, 500 mA continuous collector current, and DC current gain (h_FE) of 180–540 at I_C = 2.0 mA. It operates across –55°C to +150°C and is used in low-voltage signal amplification and discrete switching circuits in industrial control modules.

For engineers reviewing the 2N3417_D26Z datasheet, pinout, applications, or equivalent options, key selection criteria include verified h_FE range, TO-92 mechanical compatibility, V_CEO/V_CBO breakdown margins, thermal resistance (R_θJA = 200°C/W), and tape-and-reel packaging code D26Z compliance.

Technical Context

The 2N3417_D26Z is fabricated on Fairchild's Process 10 and shares electrical characteristics with the 2N3416 family but delivers higher DC current gain-minimum 180 and up to 540 at 2.0 mA collector current. Its saturation performance is specified at I_C = 50 mA / I_B = 3.0 mA, with V_CE(sat) ≤ 0.3 V and V_BE(sat) between 0.6 V and 1.3 V.

Thermal design relies on its R_θJC = 83.3°C/W and R_θJA = 200°C/W ratings, enabling operation up to +150°C junction temperature. The device supports continuous conduction up to 500 mA and withstands 50 V across both collector-emitter and collector-base terminals under defined test conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum safe collector-emitter voltage before breakdown under open-base condition
I_C (continuous)	500 mA - Sustained collector current capability without thermal derating at T_A ≤ 25°C
h_FE	180–540 - DC current gain range at V_CE = 4.5 V, I_C = 2.0 mA, defining small-signal amplification linearity
V_CE(sat)	≤ 0.3 V - Low saturation voltage ensures minimal power loss in switching applications at I_C = 50 mA / I_B = 3.0 mA
T_J range	–55°C to +150°C - Validated operating junction temperature span for industrial ambient environments
P_D	625 mW - Total power dissipation at 25°C, derating 5.0 mW/°C above ambient

Pinout & Package

2N3417_D26Z is supplied in the standard TO-92 plastic package with straight leads and no lead clip, per EOL code D26Z tape-and-reel configuration (2,000 units/reel). Pin identification follows the B-C-E sequence (Base–Collector–Emitter) when viewing the flat side with leads downward.

Pin/Terminal	Circuit Role	Design Meaning
Lead 1 (left, flat side view)	Base	Control terminal for biasing; requires current-limited drive to achieve target h_FE-dependent I_C
Lead 2 (center, flat side view)	Collector	Main current-carrying terminal; connected to load or supply rail in common-emitter configurations
Lead 3 (right, flat side view)	Emitter	Reference terminal; typically grounded or tied to current-sense resistor in switching topologies

Key Features

Feature	Design Value
High h_FE range	180–540 enables precise biasing with low base drive current in linear amplifiers and saturated switches
Low V_CE(sat)	≤ 0.3 V minimizes conduction loss and self-heating in high-duty-cycle switching applications
Wide temperature operation	–55°C to +150°C rating supports deployment in automotive engine compartments and industrial motor controls
TO-92 tape-and-reel (D26Z)	2,000-unit reel format ensures compatibility with automated SMT placement equipment for high-volume assembly

Applications

Industrial Sensor Signal Conditioning	DC Motor On/Off Control
Use Scenario: Amplifying low-level analog output from thermistors or potentiometric position sensors in PLC input modules. IC Role / Device Role / Timing Role: NPN amplifier configured in common-emitter topology to provide voltage gain and impedance buffering. Use Value: High h_FE (180–540) allows stable gain with minimal base current draw, reducing loading on upstream sensor elements.	Use Scenario: Driving small brushed DC motors (≤24 V, ≤300 mA) in HVAC actuators and valve positioners. IC Role / Device Role / Timing Role: Single-stage saturated switch controlling motor current path via collector-emitter junction. Use Value: V_CE(sat) ≤ 0.3 V limits power dissipation during ON state, enabling reliable operation without heatsinking at rated load.
LED Driver for Status Indication	Relay Coil Driver
Use Scenario: Switching indicator LEDs in panel-mounted HMI devices requiring current limiting and logic-level compatibility. IC Role / Device Role / Timing Role: Current-controlled switch interfacing microcontroller GPIO to LED anode/cathode paths. Use Value: 500 mA I_C rating supports driving multiple parallel LEDs or high-brightness single LEDs without external current regulation.	Use Scenario: Energizing 5–24 V DC relay coils in industrial safety interlock circuits and machine control panels. IC Role / Device Role / Timing Role: Low-side switch connecting relay coil return path to ground under MCU command. Use Value: 50 V V_CEO margin accommodates coil flyback transients up to 40 V, eliminating need for external clamp diodes in many designs.

Industrial Sensor Signal Conditioning

DC Motor On/Off Control

Use Scenario: Amplifying low-level analog output from thermistors or potentiometric position sensors in PLC input modules.

IC Role / Device Role / Timing Role: NPN amplifier configured in common-emitter topology to provide voltage gain and impedance buffering.

Use Value: High h_FE (180–540) allows stable gain with minimal base current draw, reducing loading on upstream sensor elements.

Use Scenario: Driving small brushed DC motors (≤24 V, ≤300 mA) in HVAC actuators and valve positioners.

IC Role / Device Role / Timing Role: Single-stage saturated switch controlling motor current path via collector-emitter junction.

Use Value: V_CE(sat) ≤ 0.3 V limits power dissipation during ON state, enabling reliable operation without heatsinking at rated load.

LED Driver for Status Indication

Relay Coil Driver

Use Scenario: Switching indicator LEDs in panel-mounted HMI devices requiring current limiting and logic-level compatibility.

IC Role / Device Role / Timing Role: Current-controlled switch interfacing microcontroller GPIO to LED anode/cathode paths.

Use Value: 500 mA I_C rating supports driving multiple parallel LEDs or high-brightness single LEDs without external current regulation.

Use Scenario: Energizing 5–24 V DC relay coils in industrial safety interlock circuits and machine control panels.

IC Role / Device Role / Timing Role: Low-side switch connecting relay coil return path to ground under MCU command.

Use Value: 50 V V_CEO margin accommodates coil flyback transients up to 40 V, eliminating need for external clamp diodes in many designs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
PN2222A	Higher h_FE min (100), lower V_CEO (40 V), same TO-92 package	Suitable for lower-voltage (<30 V) digital logic interfacing and low-power amplification	Select when V_CEO margin < 50 V is acceptable and tighter h_FE consistency is required
BC547B	Lower I_C rating (100 mA), higher h_FE (200–450), same V_CEO (45 V)	Better suited for low-current signal stages than power switching	Prefer for preamplifier stages where gain stability matters more than current handling

Compared with PN2222A and BC547B, the 2N3417_D26Z offers superior voltage standoff (50 V) and higher current capacity (500 mA), making it preferable for industrial switching loads where transient robustness and thermal margin are critical.

Availability

2N3417_D26Z is available at Aetrix Electronics and suitable for industrial sensor interfaces, DC motor control circuits, and relay driver modules requiring stable component supply and long-term manufacturability.

Supply support for 2N3417_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 discrete power devices, analog ICs, and interface solutions before its acquisition by ON Semiconductor in 2016.

The 2N3417_D26Z belongs to Fairchild's legacy general-purpose bipolar transistor product line, designed specifically for cost-sensitive, medium-current amplification and switching in industrial and consumer equipment.

FAQ

What is the pin configuration of the 2N3417_D26Z?

The 2N3417_D26Z uses the standard TO-92 package with Base–Collector–Emitter (B–C–E) pinout when viewed from the flat side with leads pointing downward. This matches JEDEC TO-92 mechanical specification and is confirmed in Fairchild's 2N3416/2N3417 datasheet Rev B. The D26Z reel variant maintains identical pin assignment.

Does the 2N3417_D26Z meet RoHS requirements?

The 2N3417_D26Z was manufactured prior to full RoHS enforcement and does not carry RoHS-compliant markings. It contains leaded solder in internal construction and is classified as non-RoHS per Fairchild's legacy product documentation. For RoHS-compliant alternatives, consult Aetrix Electronics' updated NPN transistor portfolio.

What is the maximum safe operating frequency for small-signal amplification using the 2N3417_D26Z?

The 2N3417_D26Z is characterized for small-signal current gain (h_fe) at 1.0 kHz, with no published f_T or transition frequency data in its official datasheet. It is intended for audio-frequency and DC-coupled applications-not RF or high-speed digital switching-due to lack of bandwidth validation beyond 1 kHz.

Can the 2N3417_D26Z replace the 2N3416 in existing designs?

Yes, the 2N3417_D26Z can replace the 2N3416 in most designs because both share identical absolute maximum ratings, package, pinout, and thermal characteristics. The primary difference is higher h_FE (180–540 vs. 75–225), which may improve gain stability but requires verification of base bias network compatibility.

Is the 2N3417_D26Z suitable for automotive under-hood applications?

The 2N3417_D26Z has a validated junction temperature range of –55°C to +150°C and meets industrial thermal requirements, but it lacks AEC-Q101 qualification or automotive-specific reliability testing. It is not recommended for safety-critical automotive under-hood use unless fully requalified per customer-specific stress protocols.

2N3417_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):: 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_D26Z FAQ

1.How can I place an order for 2N3417_D26Z through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N3417_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 2N3417_D26Z reliable?

The price and inventory of 2N3417_D26Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N3417_D26Z is usually 5 days.

3.What payment methods are accepted for 2N3417_D26Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N3417_D26Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N3417_D26Z?

2N3417_D26Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N3417_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 2N3417_D26Z?

For technical support, including 2N3417_D26Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N3417_D26Z requirements.

6.How does Aetrix verify that 2N3417_D26Z is sourced from the original manufacturer or authorized distributors?

All 2N3417_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 2N3417_D26Z meets industry standards.

7.What is the process for return or replacement of 2N3417_D26Z?

All 2N3417_D26Z units undergo pre-shipment inspection (PSI). If there is an issue with 2N3417_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 2N3417_D26Z part is unused and in its original packaging.

Return procedure for 2N3417_D26Z:

1.Submit a request within 90 days.

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

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