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

onsemi KSA1013RTA

Name: KSA1013RTA
Brand: onsemi
SKU: KSA1013RTA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: KSA1013RTA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 Long Body, Formed Leads

Datasheet:: KSA1013RTA.pdf

Description:: TRANS PNP 160V 1A TO-92-3

Quantity:: RFQ Add To RFQ list

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Inventory:8,348

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Product details

Overview

KSA1013RTA from onsemi is a PNP epitaxial silicon transistor designed for high-voltage switching and linear amplification in vertical deflection and audio output stages of color TV systems. It features −160 V collector-emitter breakdown voltage (BV_CEO), −1 A continuous collector current (I_C), 900 mW power dissipation, and DC current gain (h_FE) ranging from 60 to 320 at −200 mA. Its TO-92 3 LF (Pb-free) package supports compact consumer electronics designs.

For engineers reviewing the KSA1013RTA datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, −160 V V_CEO rating, TO-92 lead-formed mechanical outline (8.0 × 4.9 mm), h_FE classification Y (100–200), and safe operating area compliance up to 1 A pulsed current.

Technical Context

This device operates as an emitter-common PNP bipolar junction transistor with fixed polarity and no integrated biasing or protection circuitry. Its design centers on high-voltage capability (−160 V V_CBO/V_CEO) and moderate-speed switching, evidenced by f_T = 15–50 MHz and C_ob ≤ 35 pF at −10 V V_CB.

Thermal performance is defined by R_JA = 139 °C/W on standard FR-4 PCB (76 × 114 mm), with 7.2 mW/°C derating above 25 °C ambient. Junction temperature is rated to 150 °C, and storage range spans −55 to +150 °C - confirming suitability for non-automotive industrial and consumer-grade thermal environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−160 V: Maximum allowable collector-emitter voltage before breakdown; enables use in high-voltage vertical deflection circuits.
I_C	−1 A: Continuous collector current rating; supports peak audio output drive without forced cooling.
P_D	900 mW: Power dissipation at 25 °C ambient; requires thermal derating above that temperature.
h_FE	100–200 (Y-class): Verified DC current gain range at −200 mA and −5 V V_CE; ensures predictable base drive sizing.
f_T	15–50 MHz: Current gain bandwidth product; confirms suitability for video-frequency switching but not RF applications.
C_ob	≤35 pF at −10 V: Output capacitance limiting high-frequency response; impacts switching speed in pulse applications.

Pinout & Package

Package: TO-92 3 LF (Pb-free), case outline 135AM, dimensions 8.0 × 4.9 mm, lead-formed. Standard through-hole mounting with 2.54 mm pin pitch.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current source terminal for PNP operation; connects to most positive rail in common-emitter configuration.
2	Collector	Current sink terminal; handles −1 A load current and −160 V reverse bias in vertical deflection flyback.
3	Base	Control input; requires −50 mA base drive for saturation at −500 mA collector current (V_CE(sat) ≤ −1.5 V).

Key Features

Feature	Design Value
High-voltage PNP structure	−160 V V_CEO enables direct replacement of legacy vertical deflection transistors without snubber redesign.
Y-class h_FE binning	Guaranteed 100–200 gain at −200 mA simplifies base resistor calculation and reduces production test variance.
TO-92 3 LF Pb-free package	RoHS-compliant lead-formed outline (135AM) ensures compatibility with existing wave-solder reflow profiles.
150 °C junction rating	Supports sustained operation in enclosed TV chassis with limited airflow and ambient up to 70 °C.

Applications

Color TV Vertical Deflection	Color TV Audio Output Stage
Use Scenario: Driving vertical scan coil with high-voltage flyback pulses in CRT-based television sets. IC Role / Device Role / Timing Role: High-voltage PNP switch handling repetitive −160 V transient spikes and 1 A peak current. Use Value: Eliminates need for external clamping diodes due to robust BV_CEO and SOA compliance up to 100 ms pulses.	Use Scenario: Amplifying line-level audio signals to drive speaker loads in analog TV audio subsystems. IC Role / Device Role / Timing Role: Linear Class-A/B output stage transistor delivering low-distortion audio with stable h_FE across temperature. Use Value: Y-class h_FE binning ensures consistent gain matching across stereo channels without manual trimming.
Monitor Vertical Deflection	Legacy Video Equipment Power Switching
Use Scenario: Replacing obsolete vertical output transistors in professional CRT monitors requiring long-term reliability. IC Role / Device Role / Timing Role: Primary switching element in flyback transformer primary drive circuit. Use Value: 139 °C/W R_JA allows operation on minimal copper area, reducing PCB cost in space-constrained monitor designs.	Use Scenario: Controlling relay coils or solenoid drivers in discontinued broadcast equipment service modules. IC Role / Device Role / Timing Role: General-purpose high-voltage PNP switch interfacing microcontroller GPIO to inductive loads. Use Value: −6 V V_EBO rating prevents base-emitter junction damage during inductive kickback events.

Color TV Vertical Deflection

Color TV Audio Output Stage

Use Scenario: Driving vertical scan coil with high-voltage flyback pulses in CRT-based television sets.

IC Role / Device Role / Timing Role: High-voltage PNP switch handling repetitive −160 V transient spikes and 1 A peak current.

Use Value: Eliminates need for external clamping diodes due to robust BV_CEO and SOA compliance up to 100 ms pulses.

Use Scenario: Amplifying line-level audio signals to drive speaker loads in analog TV audio subsystems.

IC Role / Device Role / Timing Role: Linear Class-A/B output stage transistor delivering low-distortion audio with stable h_FE across temperature.

Use Value: Y-class h_FE binning ensures consistent gain matching across stereo channels without manual trimming.

Monitor Vertical Deflection

Legacy Video Equipment Power Switching

Use Scenario: Replacing obsolete vertical output transistors in professional CRT monitors requiring long-term reliability.

IC Role / Device Role / Timing Role: Primary switching element in flyback transformer primary drive circuit.

Use Value: 139 °C/W R_JA allows operation on minimal copper area, reducing PCB cost in space-constrained monitor designs.

Use Scenario: Controlling relay coils or solenoid drivers in discontinued broadcast equipment service modules.

IC Role / Device Role / Timing Role: General-purpose high-voltage PNP switch interfacing microcontroller GPIO to inductive loads.

Use Value: −6 V V_EBO rating prevents base-emitter junction damage during inductive kickback events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-voltage switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
KSA1015YTA	Same TO-92 3 LF package; higher h_FE (160–320, Y-class); identical V_CEO, I_C, and P_D.	Preferred where higher gain reduces base drive requirements; may require minor bias adjustment.	Select KSA1015YTA when lower base current is critical and gain consistency at light loads matters.
MJD2955T4G	TO-220 package; higher I_C (−10 A), higher P_D (115 W); same −160 V V_CEO but larger footprint and thermal mass.	Used in high-power audio amplifiers or industrial controls where TO-92 thermal limits are exceeded.	Choose MJD2955T4G only when >900 mW dissipation or >1 A DC current is required - not a drop-in replacement.

Compared with KSA1013RTA, KSA1015YTA offers higher guaranteed h_FE in the same footprint and voltage/current ratings, while MJD2955T4G trades miniaturization for vastly higher power handling - making it suitable only when thermal or current demands exceed TO-92 limits.

Availability

KSA1013RTA is available at Aetrix Electronics and suitable for color TV vertical deflection, analog audio output stages, and legacy video equipment repair requiring stable component supply and long-lifecycle support.

Supply support for KSA1013RTA 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 supplier specializing in energy-efficient power, analog, sensor, and logic solutions for automotive, industrial, and consumer markets.

The KSA1013RTA belongs to onsemi's legacy discrete bipolar transistor family, engineered specifically for high-reliability analog video signal path and deflection circuitry in CRT-based display systems.

FAQ

What is the pin configuration of the KSA1013RTA?

The KSA1013RTA uses a TO-92 3 LF package with standardized pinout: Pin 1 = Emitter, Pin 2 = Collector, Pin 3 = Base. This matches case outline 135AM per onsemi's mechanical drawings, and is confirmed in the official datasheet's marking diagram and ordering information table.

Is the KSA1013RTA RoHS compliant?

Yes, the KSA1013RTA is Pb-free and RoHS compliant, as explicitly stated in the "ORDERING INFORMATION" section under KSA1013YTA (TO-92 3 LF, Pb-Free). The "LF" suffix denotes lead-free termination, and the package meets JEDEC J-STD-609 Category 1 requirements.

What does the 'Y' in KSA1013RTA indicate?

The 'Y' in KSA1013RTA refers to the h_FE gain classification bin, specifying a DC current gain range of 100–200 at −200 mA and −5 V V_CE. This binning is defined in the datasheet's "h_FE Classification" table and ensures predictable base drive requirements in production designs.

Can the KSA1013RTA replace the KSA1013YBU?

Yes, the KSA1013RTA and KSA1013YBU share identical electrical specifications and TO-92 3 package type, differing only in packaging format: RTA is tape-and-reel (2000 units), YBU is bulk (6000 units). Both are Pb-free and functionally interchangeable in circuit design.

What is the maximum safe operating collector current for the KSA1013RTA?

The KSA1013RTA is rated for −1 A continuous collector current (I_C) at T_A = 25 °C. At higher ambient temperatures, current must be reduced per the 7.2 mW/°C derating curve; for example, at 70 °C ambient, max I_C drops to approximately −0.65 A to maintain safe junction temperature.

KSA1013RTA Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 Long Body, Formed Leads

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 160 V

Vce Saturation (Max) @ Ib, Ic:: 1.5V @ 50mA, 500mA

Current - Collector Cutoff (Max):: 1µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 60 @ 200mA, 5V

Power - Max:: 900 mW

Frequency - Transition:: 50MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

KSA1013RTA FAQ

1.How can I place an order for KSA1013RTA through Aetrix?

Please submit a Request for Quotation (RFQ) for KSA1013RTA 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 KSA1013RTA reliable?

The price and inventory of KSA1013RTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSA1013RTA is usually 5 days.

3.What payment methods are accepted for KSA1013RTA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSA1013RTA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for KSA1013RTA?

KSA1013RTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your KSA1013RTA 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 KSA1013RTA?

For technical support, including KSA1013RTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSA1013RTA requirements.

6.How does Aetrix verify that KSA1013RTA is sourced from the original manufacturer or authorized distributors?

All KSA1013RTA 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 KSA1013RTA meets industry standards.

7.What is the process for return or replacement of KSA1013RTA?

All KSA1013RTA units undergo pre-shipment inspection (PSI). If there is an issue with KSA1013RTA, 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 KSA1013RTA part is unused and in its original packaging.

Return procedure for KSA1013RTA:

1.Submit a request within 90 days.

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

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