Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi 2N6517CTA

Name: 2N6517CTA
Brand: onsemi
SKU: 2N6517CTA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 2N6517CTA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2N6517CTA.pdf

Description:: TRANS NPN 400V 0.5A TO-92-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:6,305

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

2N6517CTA from onsemi is an NPN high-voltage bipolar junction transistor rated for 350 V_CEO, 500 mA continuous collector current, and 1.5 W total device dissipation at T_C = 25°C, designed for switching and linear amplification in high-voltage power supplies, CRT deflection circuits, and industrial relay drivers.

For engineers reviewing the 2N6517CTA datasheet, pinout, applications, or equivalent options, key selection criteria include its 350 V_CEO rating, f_T of 40–200 MHz, low V_CE(sat) (≤1.0 V at I_C = 50 mA), TO-92 package thermal resistance (R_JC = 83.3°C/W), and guaranteed h_FE ≥20 at I_C = 100 mA.

Technical Context

The 2N6517CTA operates as a general-purpose NPN BJT with fixed-base current control architecture, supporting both linear amplification and saturated switching modes. Its design emphasizes high breakdown voltage integrity under transient overvoltage conditions and stable DC current gain across −55°C to +150°C junction temperature range.

It features low leakage (I_CBO ≤50 nA at V_CB = 250 V), fast switching (t_on ≤200 ns, t_off ≤3.5 μs), and capacitance values optimized for high-frequency operation: C_cb ≤6.0 pF and C_eb ≤80 pF at specified bias conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	350 Vdc - supports operation in 280 VDC bus systems with 25% safety margin
I_C (continuous)	500 mAdc - enables driving loads up to ~175 mW at V_CE = 350 V in switching mode
P_D @ T_C = 25°C	1.5 W - allows direct heatsinking to PCB copper or small metal clips without forced air
h_FE	20–200 - ensures reliable base drive design across I_C = 1–100 mA with minimal base current overhead
f_T	40–200 MHz - supports RF amplifier stages up to ~30 MHz and fast-switching SMPS feedback paths
V_CE(sat)	0.30–1.0 V - reduces conduction loss in high-side switch configurations with I_C/I_B = 5–10
R_JC	83.3°C/W - enables thermal management via case-to-heatsink interface without thermal compound dependency

Pinout & Package

2N6517CTA uses the TO-92 (Case 29-11) plastic package with straight leads and Pb-free finish. Dimensions conform to ANSI Y14.5M-1982, with body height 4.45–5.20 mm, lead pitch 2.54 mm, and maximum outline width 4.32 mm.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Reference node for base-emitter bias; connects to ground or low-side return path in common-emitter configuration
2 (Base)	Control input	Receives current-limited drive signal; requires series resistor to limit I_B ≤250 mAdc per absolute max rating
3 (Collector)	High-voltage output terminal	Connects to load and high-side supply rail; withstands 350 V transient spikes during inductive turn-off

Key Features

Feature	Design Value
High V_CEO rating	350 V - eliminates need for external snubbers in flyback transformer primary switching
Low leakage current	I_CBO ≤50 nA at 250 V - maintains stability in high-impedance bias networks and precision timing circuits
Wide operating temperature	−55°C to +150°C - qualified for under-hood automotive auxiliary power modules and industrial motor controls
Fast switching speed	t_off ≤3.5 μs - enables PWM frequencies up to 100 kHz in discrete DC-DC converters
Pb-free TO-92 packaging	RoHS-compliant construction - meets IPC-J-STD-020 moisture sensitivity level 1 (MSL-1) for standard SMT reflow

Applications

High-Voltage Power Supply Switching	CRT Horizontal Deflection
Use Scenario: Discrete switching element in 150–300 VDC offline flyback converter primary side. IC Role / Device Role / Timing Role: NPN BJT acting as main power switch controlled by optocoupler-isolated PWM driver. Use Value: 350 V_CEO rating accommodates reflected voltage spikes up to 280 V without clamping diodes, reducing bill-of-materials count.	Use Scenario: Horizontal output transistor in analog television and monitor deflection yoke circuits. IC Role / Device Role / Timing Role: High-speed switching transistor delivering pulsed current to horizontal deflection coil at 15.734 kHz. Use Value: 200 MHz f_T and sub-microsecond t_off ensure minimal phase lag and sharp flyback edge, preserving image geometry and linearity.
Industrial Relay Driver	Capacitor Discharge Ignition (CDI)
Use Scenario: Solid-state replacement for electromechanical relays controlling 24–48 VAC/DC loads in PLC I/O modules. IC Role / Device Role / Timing Role: Saturated switch interfacing microcontroller GPIO to relay coil with galvanic isolation. Use Value: Low V_CE(sat) (0.35 V @ 20 mA) minimizes self-heating during continuous duty, extending lifetime beyond 100,000 cycles.	Use Scenario: Primary-side discharge switch in motorcycle and small-engine CDI systems. IC Role / Device Role / Timing Role: Fast-turn-on transistor releasing stored energy from 400 V capacitor into ignition coil primary winding. Use Value: 350 V_CEO and 500 mA I_C support full capacitor discharge at 300–400 V with <1 μs jitter, ensuring consistent spark timing.

High-Voltage Power Supply Switching

CRT Horizontal Deflection

Use Scenario: Discrete switching element in 150–300 VDC offline flyback converter primary side.

IC Role / Device Role / Timing Role: NPN BJT acting as main power switch controlled by optocoupler-isolated PWM driver.

Use Value: 350 V_CEO rating accommodates reflected voltage spikes up to 280 V without clamping diodes, reducing bill-of-materials count.

Use Scenario: Horizontal output transistor in analog television and monitor deflection yoke circuits.

IC Role / Device Role / Timing Role: High-speed switching transistor delivering pulsed current to horizontal deflection coil at 15.734 kHz.

Use Value: 200 MHz f_T and sub-microsecond t_off ensure minimal phase lag and sharp flyback edge, preserving image geometry and linearity.

Industrial Relay Driver

Capacitor Discharge Ignition (CDI)

Use Scenario: Solid-state replacement for electromechanical relays controlling 24–48 VAC/DC loads in PLC I/O modules.

IC Role / Device Role / Timing Role: Saturated switch interfacing microcontroller GPIO to relay coil with galvanic isolation.

Use Value: Low V_CE(sat) (0.35 V @ 20 mA) minimizes self-heating during continuous duty, extending lifetime beyond 100,000 cycles.

Use Scenario: Primary-side discharge switch in motorcycle and small-engine CDI systems.

IC Role / Device Role / Timing Role: Fast-turn-on transistor releasing stored energy from 400 V capacitor into ignition coil primary winding.

Use Value: 350 V_CEO and 500 mA I_C support full capacitor discharge at 300–400 V with <1 μs jitter, ensuring consistent spark timing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN high-voltage transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD127G	TO-220 package, 100 V_CEO, 2 A I_C, higher power dissipation (1.5 W @ T_C)	Lower voltage rating limits use to ≤80 VDC systems; better suited for high-current, low-voltage motor drivers	Select when board space allows TO-220 and system voltage is ≤100 V; avoid for >200 V applications
2N5551	TO-92 package, 160 V_CEO, 600 mA I_C, f_T = 100 MHz, lower V_CE(sat) (0.2 V @ 10 mA)	Insufficient V_CEO margin for 280+ V systems; preferred for low-voltage RF preamps and signal switching	Choose only if system peak voltage remains below 140 V; not suitable as drop-in replacement in 350 V designs

Compared with MJD127G and 2N5551, the 2N6517CTA uniquely balances 350 V standoff, TO-92 form factor, and 200 MHz f_T, making it irreplaceable in compact high-voltage switching where both voltage headroom and frequency response are critical.

Availability

2N6517CTA is available at Aetrix Electronics and suitable for high-voltage power supply switching, CRT deflection circuits, industrial relay drivers, and capacitor discharge ignition systems requiring stable component supply across extended production lifecycles.

Supply support for 2N6517CTA 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

onsemi (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The 2N6517CTA belongs to onsemi's legacy high-voltage BJT product line, engineered specifically for reliability-critical linear and switching applications in analog power electronics where ruggedness and parameter consistency outweigh digital integration needs.

FAQ

What is the maximum collector-emitter voltage rating for the 2N6517CTA?

The 2N6517CTA has a guaranteed minimum V_CEO rating of 350 Vdc under test condition I_C = 1.0 mAdc and I_B = 0. This rating applies across the full operating temperature range and defines the absolute maximum voltage the device can block in common-emitter configuration before breakdown. Exceeding this value risks irreversible avalanche failure.

Does the 2N6517CTA have a Pb-free package?

Yes, the 2N6517CTA is manufactured in a Pb-free TO-92 package compliant with RoHS Directive 2011/65/EU. The marking "CTA" suffix denotes Pb-free construction, and the device meets J-STD-020 MSL-1 requirements for moisture sensitivity, enabling standard reflow soldering without baking preconditioning.

What is the DC current gain (h_FE) range for the 2N6517CTA at 100 mA collector current?

At I_C = 100 mAdc and V_CE = 10 Vdc, the 2N6517CTA exhibits h_FE between 15 and 25 (minimum 15, typical 20). This gain is measured at T_A = 25°C and reflects the device's ability to amplify base current into collector current under saturated switching conditions.

Can the 2N6517CTA be used in linear amplifier applications?

Yes, the 2N6517CTA supports linear operation with guaranteed h_FE stability from −55°C to +150°C and low distortion characteristics. Its f_T of 40–200 MHz and low C_cb (≤6.0 pF) enable audio and RF preamplifier designs up to ~30 MHz, provided thermal design maintains T_J within rated limits.

What is the thermal resistance from junction to case (R_JC) for the 2N6517CTA?

The 2N6517CTA has a maximum R_JC of 83.3°C/W, measured under steady-state conditions at T_C = 25°C. This value enables accurate junction temperature estimation when the case is mounted to a heatsink or thermally conductive PCB layer, supporting thermal design for continuous 1.5 W power dissipation.

2N6517CTA Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Cut Tape (CT)

Product Status:: Obsolete

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 400 V

Vce Saturation (Max) @ Ib, Ic:: 1V @ 5mA, 50mA

Current - Collector Cutoff (Max):: 50nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 20 @ 50mA, 10V

Power - Max:: 625 mW

Frequency - Transition:: 200MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

2N6517CTA FAQ

1.How can I place an order for 2N6517CTA through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N6517CTA 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 2N6517CTA reliable?

The price and inventory of 2N6517CTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N6517CTA is usually 5 days.

3.What payment methods are accepted for 2N6517CTA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N6517CTA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N6517CTA?

2N6517CTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N6517CTA 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 2N6517CTA?

For technical support, including 2N6517CTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N6517CTA requirements.

6.How does Aetrix verify that 2N6517CTA is sourced from the original manufacturer or authorized distributors?

All 2N6517CTA 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 2N6517CTA meets industry standards.

7.What is the process for return or replacement of 2N6517CTA?

All 2N6517CTA units undergo pre-shipment inspection (PSI). If there is an issue with 2N6517CTA, 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 2N6517CTA part is unused and in its original packaging.

Return procedure for 2N6517CTA:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…