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onsemi KSA3010RTU
- Part No.:
- KSA3010RTU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-3P-3, SC-65-3
- Datasheet:
-
KSA3010RTU.pdf
- Description:
- TRANS PNP 120V 6A TO-3P
- Quantity:
- Payment:
- Shipping:
Inventory:9,611
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Product details
Overview
KSA3010RTU from Fairchild Semiconductor is a PNP epitaxial silicon power transistor designed for high-current audio power amplifier stages, featuring -120 V collector-emitter breakdown voltage (VCEO), -6 A DC collector current (IC), 60 W collector dissipation at TC = 25°C, and hFE range of 55–160 at VCE = -5 V and IC = -1 A.
For engineers reviewing the KSA3010RTU datasheet, pinout, applications, or equivalent options, this device serves as a complementary high-power PNP switch or linear amplifier in Class AB audio output stages, requiring precise thermal management and SOA-aware biasing.
Technical Context
The KSA3010RTU operates as a medium-frequency, high-current PNP bipolar junction transistor with fT = 30 MHz, enabling use in audio frequency amplification up to ~20 kHz with stable gain. Its wide Safe Operating Area (SOA) supports linear operation under high-voltage, high-current transients typical in push-pull output stages.
It exhibits VCE(sat) ≤ -2.5 V at IC = -5 A and IB = -0.5 A, and VBE(on) ≤ -1.5 V at IC = -5 A, indicating robust base drive requirements for full conduction. Cob = 180 pF at VCB = -10 V enables predictable high-frequency roll-off in amplifier feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -120 V - Supports rail voltages up to ±100 V in complementary audio amplifier designs |
| IC (DC) | -6 A - Enables ≥50 W continuous output into 8 Ω loads with proper heatsinking |
| PC @ TC=25°C | 60 W - Requires minimum thermal resistance RθJA < 2.08°C/W for safe ambient operation |
| hFE | 55–160 - Allows predictable DC bias design across production lots at IC = -1 A |
| fT | 30 MHz - Ensures adequate gain margin above 20 kHz for stable negative feedback implementation |
| Cob | 180 pF - Sets upper bandwidth limit in common-emitter configurations with known load impedance |
Pinout & Package
Package: TO-3P (isolated metal tab, 3-pin through-hole). Mounting requires electrically isolated heatsink interface and torque-controlled fastening per mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input | Receives negative base current to turn on PNP conduction; requires current-limiting resistor in series with driver |
| 2 (Collector) | High-side current sink | Connected to positive supply rail in common-emitter amplifier; carries full load current |
| 3 (Emitter) | Output reference node | Typically tied to load (e.g., speaker + terminal); voltage follows base minus VBE |
Key Features
| Feature | Design Value |
|---|---|
| Wide SOA | Supports simultaneous high VCE and high IC without secondary breakdown-critical for unclipped audio transients |
| Complementary pairing | Engineered as direct PNP counterpart to KSC4010 NPN-enables matched push-pull stage design |
| High fT | 30 MHz gain-bandwidth ensures phase stability in global feedback loops up to 100 kHz |
| Low VCE(sat) | ≤ -2.5 V at -5 A reduces conduction loss and thermal stress in Class AB output stage |
Applications
| Audio Power Amplifier | High-Voltage Linear Regulator |
|---|---|
Use Scenario: Final output stage in discrete Class AB stereo amplifier delivering 30–60 W per channel into 4–8 Ω loads. IC Role / Device Role / Timing Role: PNP output transistor in complementary pair with KSC4010, conducting during negative half-cycle of audio signal. Use Value: High IC (-6 A) and wide SOA enable clean clipping-free reproduction of dynamic bass transients. | Use Scenario: Pass element in high-current, high-dropout linear regulator for industrial control rails (±80 V). IC Role / Device Role / Timing Role: Series pass transistor regulating output by modulating base-emitter voltage under error amplifier control. Use Value: VCEO = -120 V allows >40 V dropout margin while maintaining safe junction temperature at 3 A load. |
| DC Motor Driver (H-Bridge) | Switched-Mode Power Supply (PNP Side) |
Use Scenario: High-side switch in 4-quadrant DC motor controller for robotics or CNC positioning systems. IC Role / Device Role / Timing Role: PNP high-side switch controlling current flow from positive bus to motor winding. Use Value: ICP = -12 A pulse rating supports short-duration stall currents without SOA violation. | Use Scenario: PNP auxiliary switch in resonant LLC or forward converter synchronous rectification circuits. IC Role / Device Role / Timing Role: Complementary switching element in gate-drive-isolated PNP/NPN totem-pole output stage. Use Value: fT = 30 MHz and low Cob allow reliable switching up to 500 kHz with minimal Miller-induced delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD44H11T4 | VCEO = -80 V, IC = -8 A, TO-220 package, lower voltage rating | Suitable only for ≤±60 V rail systems; lacks SOA robustness at high VCE | Select when cost-sensitive, lower-voltage designs prioritize footprint over SOA margin |
| BD711 | VCEO = -100 V, IC = -12 A, TO-126 package, higher current but lower voltage rating | Requires derating above 80 V; not recommended for ±100 V amplifier rails | Prefer for high-current, low-voltage industrial drivers where thermal mass is constrained |
Compared with MJD44H11T4 and BD711, the KSA3010RTU uniquely balances -120 V breakdown, -6 A DC current, and wide SOA in TO-3P-making it the only option among the three qualified for full-rail ±100 V audio output stages without voltage derating.
Availability
KSA3010RTU is available at Aetrix Electronics and suitable for audio power amplifiers, high-voltage linear regulators, DC motor drivers, and switched-mode power supplies requiring stable component supply and long-term industrial availability.
Supply support for KSA3010RTU 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 components before its acquisition by ON Semiconductor in 2016.
The KSA3010RTU belongs to Fairchild's legacy audio and power transistor product line, engineered specifically for high-fidelity linear amplification and robust high-current switching in industrial and consumer audio systems.
FAQ
What is the maximum continuous collector current for KSA3010RTU?
The KSA3010RTU supports a maximum DC collector current (IC) of -6 A at TC = 25°C. This rating assumes proper heatsinking and derates linearly with increasing case temperature-down to zero at TC = 155°C per the power derating curve in the datasheet. Operation beyond -6 A DC requires pulsed conditions validated against the SOA graph.
Is KSA3010RTU pin-compatible with KSC4010?
No, the KSA3010RTU is not pin-compatible with KSC4010. While they are complementary PNP/NPN devices intended for matched push-pull stages, KSA3010RTU uses TO-3P packaging with Base–Collector–Emitter pinout (1–2–3), whereas KSC4010 uses TO-3P with Emitter–Collector–Base (1–2–3) pinout. Physical layout must account for reversed terminal assignments.
What is the safe operating area (SOA) limitation for KSA3010RTU at 100°C case temperature?
At TC = 100°C, the KSA3010RTU's SOA is reduced per the derating curve: maximum allowable IC drops to approximately -3.5 A at VCE = -80 V, and to -1.2 A at VCE = -120 V. These limits ensure junction temperature remains below 150°C during transient operation and must be verified using the SOA plot (Figure 5) in the KSA3010 Rev. C datasheet.
Does KSA3010RTU require a heatsink in all applications?
Yes, the KSA3010RTU requires a heatsink in all non-trivial applications. With RθJC = 2.0°C/W and PC = 60 W at TC = 25°C, even modest power dissipation (>5 W) exceeds safe junction temperature without thermal management. The TO-3P package's metal tab must be mounted to an isolated heatsink using thermally conductive insulator and appropriate mounting pressure.
What is the typical hFE value of KSA3010RTU at IC = -2 A?
The KSA3010RTU's hFE is specified as 55–160 at IC = -1 A and VCE = -5 V. At IC = -2 A, typical hFE falls within 70–130 based on Figure 2 (DC current gain vs. collector current), confirming usable current gain across the mid-range of its operating envelope-critical for stable Class AB quiescent current setting.
KSA3010RTU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-3P-3, SC-65-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 6 A
- Voltage - Collector Emitter Breakdown (Max):
- 120 V
- Vce Saturation (Max) @ Ib, Ic:
- 2.5V @ 500mA, 5A
- Current - Collector Cutoff (Max):
- 10µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 55 @ 1A, 5V
- Power - Max:
- 60 W
- Frequency - Transition:
- 30MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-3P
KSA3010RTU FAQ
1.How can I place an order for KSA3010RTU through Aetrix?
Please submit a Request for Quotation (RFQ) for KSA3010RTU 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 KSA3010RTU reliable?
The price and inventory of KSA3010RTU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSA3010RTU is usually 5 days.
3.What payment methods are accepted for KSA3010RTU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSA3010RTU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSA3010RTU?
KSA3010RTU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSA3010RTU 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 KSA3010RTU?
For technical support, including KSA3010RTU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSA3010RTU requirements.
6.How does Aetrix verify that KSA3010RTU is sourced from the original manufacturer or authorized distributors?
All KSA3010RTU 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 KSA3010RTU meets industry standards.
7.What is the process for return or replacement of KSA3010RTU?
All KSA3010RTU units undergo pre-shipment inspection (PSI). If there is an issue with KSA3010RTU, 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 KSA3010RTU part is unused and in its original packaging.
Return procedure for KSA3010RTU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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