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

onsemi TN6715A

Name: TN6715A
Brand: onsemi
SKU: TN6715A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TN6715A

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: TN6715A.pdf

Description:: TRANS NPN 40V 1.5A TO-226-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TN6715A from ON Semiconductor is an NPN general-purpose amplifier transistor designed for medium-power linear amplification and switching applications, with a continuous collector current rating of 1.5 A, V_CEO = 40 V, and DC current gain (h_FE) of 55–250 at I_C = 10 mA–1.0 A. It is commonly used in power supply regulators, motor drivers, and audio preamplifier stages where robust thermal performance and stable gain across temperature are required.

For engineers reviewing the TN6715A datasheet, pinout, applications, or equivalent options, key selection considerations include its SOT-223/TO-226 dual-package availability, junction-to-ambient thermal resistance of 125 °C/W, saturation voltage of 0.5 V at I_C = 1.0 A, and safe operating area validated up to 100 µs pulsed operation - all critical for reliable medium-current switching design.

Technical Context

The TN6715A is fabricated using Fairchild's Process 38, optimized for high-current gain consistency and low V_CE(sat) in general-purpose bipolar operation. Its h_FE remains ≥50 even at I_C = 1.0 A and V_CE = 1.0 V, supporting stable biasing in Class-A and Class-AB amplifier topologies.

Thermal design is enabled by two package variants: TO-226 (R_θJA = 125 °C/W on FR-4 PCB) and SOT-223 (same R_θJA, but with integrated heat sink pad). The device's f_T exceeds 300 MHz at I_C = 100 mA, enabling use in low-frequency RF driver stages and fast-switching control circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - Maximum safe collector-emitter voltage before breakdown; defines upper rail limit in switch-mode or linear regulator designs.
I_C (continuous)	1.5 A - Sustained collector current capability; supports load switching up to ~18 W at 12 V with adequate heatsinking.
h_FE (min)	55 at I_C = 10 mA - Ensures reliable base drive margin in low-current amplification; usable down to -40 °C per typical curves.
V_CE(sat)	0.5 V at I_C = 1.0 A, I_B = 100 mA - Low saturation loss enables >95% efficiency in saturated-switch applications at 1 A.
R_θJA	125 °C/W - Thermal resistance on standard FR-4 board; requires ≥6 cm² copper pour under collector pad for full 1.5 A operation at +70 °C ambient.
f_T	≥300 MHz - Gain-bandwidth product at I_C = 100 mA; supports broadband amplification up to ~50 MHz with gain >10.
P_D	1.0 W - Total power dissipation at T_A = 25 °C; derates linearly to zero at 150 °C junction temperature.

Pinout & Package

Available in two industry-standard packages: TO-226 (through-hole, 3-lead radial) and SOT-223 (surface-mount, 4-lead with exposed thermal pad). Both share identical pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector (TO-226); Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector, Pin 4 = Collector (SOT-223 thermal pad).

Pin/Terminal	Circuit Role	Design Meaning
Emitter (E)	Current exit path for majority carriers	Connected to ground or low-side reference; must handle full load current return path with minimal impedance.
Base (B)	Control terminal for minority carrier injection	Requires current-limited drive (e.g., 10–100 mA) to achieve full saturation; sensitive to ESD due to low V_EBO = 5.0 V.
Collector (C)	Current entry path and primary power terminal	Electrically and thermally tied to PCB copper pour in SOT-223; serves as main heat transfer node in both packages.

Key Features

Feature	Design Value
High h_FE consistency across I_C range	h_FE ≥ 50 at I_C = 1.0 A ensures predictable base drive requirements in high-current switches without gain collapse.
Low V_CE(sat) at rated current	0.5 V saturation voltage minimizes conduction loss and self-heating during extended on-time operation.
Wide operating temperature range	-55 °C to +150 °C junction range supports automotive under-hood and industrial motor-control environments.
Validated SOA for pulsed operation	Safe Operating Area graph confirms reliability at 100 µs pulses up to 10 A peak, enabling short-duration surge handling.
Process 38 fabrication	Optimized for medium-power bipolar performance: tight parameter distribution, low leakage (I_CBO ≤ 0.1 µA), and stable f_T.

Applications

DC Power Supply Regulation	DC Motor Control
Use Scenario: Linear voltage regulator output stage delivering 12 V / 1 A to analog sensor subsystems. IC Role / Device Role / Timing Role: NPN pass transistor controlling output voltage via base bias feedback loop. Use Value: Low V_CE(sat) reduces dropout voltage and thermal load; h_FE stability ensures consistent regulation across input ripple and load transients.	Use Scenario: H-bridge half-bridge driver for 24 V brushed DC motors in industrial actuators. IC Role / Device Role / Timing Role: High-side or low-side switching element controlled by PWM signal. Use Value: 1.5 A continuous rating supports 30 W mechanical output; SOA validation allows brief stall-current tolerance up to 10 A.
Audio Pre-amplifier Stage	LED Driver for High-Brightness Arrays
Use Scenario: Class-A small-signal amplifier boosting microphone-level signals before ADC sampling. IC Role / Device Role / Timing Role: Voltage amplifier with emitter-follower configuration for low-output-impedance buffering. Use Value: h_FE ≥ 55 at 10 mA ensures high input impedance and minimal signal attenuation; f_T > 300 MHz preserves audio bandwidth beyond 20 kHz.	Use Scenario: Constant-current LED driver for 12 V, 1 A white LED strings in signage or lighting modules. IC Role / Device Role / Timing Role: Current-regulating series pass element with feedback resistor network. Use Value: Precise I_C control enabled by stable h_FE; low V_CE(sat) maximizes forward voltage headroom for LED string length.

DC Power Supply Regulation

DC Motor Control

Use Scenario: Linear voltage regulator output stage delivering 12 V / 1 A to analog sensor subsystems.

IC Role / Device Role / Timing Role: NPN pass transistor controlling output voltage via base bias feedback loop.

Use Value: Low V_CE(sat) reduces dropout voltage and thermal load; h_FE stability ensures consistent regulation across input ripple and load transients.

Use Scenario: H-bridge half-bridge driver for 24 V brushed DC motors in industrial actuators.

IC Role / Device Role / Timing Role: High-side or low-side switching element controlled by PWM signal.

Use Value: 1.5 A continuous rating supports 30 W mechanical output; SOA validation allows brief stall-current tolerance up to 10 A.

Audio Pre-amplifier Stage

LED Driver for High-Brightness Arrays

Use Scenario: Class-A small-signal amplifier boosting microphone-level signals before ADC sampling.

IC Role / Device Role / Timing Role: Voltage amplifier with emitter-follower configuration for low-output-impedance buffering.

Use Value: h_FE ≥ 55 at 10 mA ensures high input impedance and minimal signal attenuation; f_T > 300 MHz preserves audio bandwidth beyond 20 kHz.

Use Scenario: Constant-current LED driver for 12 V, 1 A white LED strings in signage or lighting modules.

IC Role / Device Role / Timing Role: Current-regulating series pass element with feedback resistor network.

Use Value: Precise I_C control enabled by stable h_FE; low V_CE(sat) maximizes forward voltage headroom for LED string length.

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
MJD127G	V_CEO = 80 V, I_C = 2.0 A, h_FE = 30–120 - higher voltage rating but lower gain consistency at low I_C.	Preferred in 48 V systems or where higher breakdown margin is needed; less suitable for precision low-current amplification.	Select MJD127G when V_CEO > 40 V is mandatory; verify h_FE spread at target I_C for bias stability.
ZTX653	V_CEO = 60 V, I_C = 1.5 A, h_FE = 100–300 - tighter h_FE distribution and higher f_T (~500 MHz), but higher V_CE(sat) (0.7 V).	Better for RF driver or wideband amplification; less efficient in high-duty-cycle switching due to higher saturation loss.	Choose ZTX653 for bandwidth-critical or high-gain-stability needs; accept 0.2 V higher conduction loss.

Compared with TN6715A, MJD127G offers higher voltage safety margin but reduced low-current gain predictability, while ZTX653 delivers superior frequency response and h_FE uniformity at the cost of increased conduction loss - making TN6715A the optimal balance of gain, saturation voltage, and thermal robustness for general-purpose 40 V / 1.5 A applications.

Availability

TN6715A is available at Aetrix Electronics and suitable for DC motor control, linear power regulation, audio pre-amplification, and high-brightness LED driving requiring stable component supply across industrial and embedded production cycles.

Supply support for TN6715A 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

ON Semiconductor (formerly Fairchild Semiconductor) is a global leader in energy-efficient semiconductor solutions, specializing in power management, analog, and discrete devices for automotive, industrial, and consumer markets.

The TN6715A belongs to ON Semiconductor's legacy general-purpose bipolar transistor family, engineered for cost-effective, thermally robust amplification and switching in medium-power applications where reliability and parameter consistency are essential.

FAQ

What is the maximum continuous collector current rating for the TN6715A?

The TN6715A has a maximum continuous collector current (I_C) rating of 1.5 A at T_A = 25 °C. This rating assumes proper PCB thermal management - specifically, a minimum 6 cm² copper pour connected to the collector lead for TO-226 or the thermal pad for SOT-223. Derating applies above 25 °C ambient, with full derating to zero at +150 °C junction temperature.

Does the TN6715A support surface-mount assembly, and which package variant should I select for automated production?

Yes, the TN6715A is available in SOT-223 package (FS PKG Code 47), fully compatible with standard reflow soldering processes. For automated production, choose the SOT-223 variant supplied on 13" reels (2,500 units/reel, D84Z option) - it features precise tape-and-reel dimensions per EIA-481, antistatic embossed carrier tape, and verified orientation for pick-and-place accuracy.

What is the typical DC current gain (h_FE) of the TN6715A at 1.0 A collector current?

The TN6715A exhibits a minimum h_FE of 50 at I_C = 1.0 A, V_CE = 1.0 V, and T_A = 25 °C, with typical values reaching 60–80. This gain remains stable across temperature: typical h_FE is ~55 at -40 °C and ~65 at +125 °C under the same test conditions, as confirmed by the "Typical Pulsed Current Gain vs Collector Current" curve in the official datasheet.

Can the TN6715A be used in switching applications with 100 µs pulse widths?

Yes, the TN6715A's Safe Operating Area (SOA) graph explicitly validates pulsed operation up to 100 µs at V_CE = 40 V and I_C = 10 A. This makes it suitable for short-duration surge handling in motor-start circuits or transient protection clamping, provided duty cycle remains ≤1% and average power stays within the 1.0 W continuous dissipation limit.

Is the TN6715A RoHS-compliant and halogen-free?

Yes, the TN6715A meets RoHS Directive 2011/65/EU and is halogen-free per JESD209-4. ON Semiconductor's official product change notice (PCN) for Fairchild-integrated parts confirms compliance for all TN6715A manufacturing lots post-2017, with material declarations available through ON Semiconductor's website using the part number TN6715A.

TN6715A Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1.5 A

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

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 100mA, 1A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 50 @ 1A, 1V

Power - Max:: 1 W

Frequency - Transition:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-226-3

TN6715A FAQ

1.How can I place an order for TN6715A through Aetrix?

Please submit a Request for Quotation (RFQ) for TN6715A 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 TN6715A reliable?

The price and inventory of TN6715A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TN6715A is usually 5 days.

3.What payment methods are accepted for TN6715A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TN6715A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TN6715A?

TN6715A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TN6715A 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 TN6715A?

For technical support, including TN6715A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TN6715A requirements.

6.How does Aetrix verify that TN6715A is sourced from the original manufacturer or authorized distributors?

All TN6715A 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 TN6715A meets industry standards.

7.What is the process for return or replacement of TN6715A?

All TN6715A units undergo pre-shipment inspection (PSI). If there is an issue with TN6715A, 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 TN6715A part is unused and in its original packaging.

Return procedure for TN6715A:

1.Submit a request within 90 days.

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

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