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onsemi KSB1022TU
- Part No.:
- KSB1022TU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-220-3 Full Pack
- Datasheet:
-
KSB1022TU.pdf
- Description:
- TRANS PNP DARL 60V 7A TO-220F-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,322
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Product details
Overview
KSB1022TU from ON Semiconductor (formerly Fairchild) is a PNP silicon Darlington transistor designed for high-power switching applications, featuring -60 V VCEO, -7 A IC(DC), -1.3 V VCE(sat) at -7 A/-14 mA, 1000–15000 hFE, and TO-220F package with insulated tab for heatsink mounting in motor control and relay driver circuits.
For engineers reviewing the KSB1022TU datasheet, pinout, applications, or equivalent options, key selection criteria include verified DC current gain at high collector current, low saturation voltage under pulsed load conditions, thermal derating behavior at elevated case temperatures, and complementary pairing with KSD1417 in H-bridge or dual-switch topologies.
Technical Context
The KSB1022TU operates as a medium-power PNP Darlington pair with cascaded emitter-follower configuration, enabling high DC current gain while maintaining manageable base drive requirements. Its design supports linear and saturated switching modes, with safe operating area (SOA) defined up to 100 µs pulse width at -45 V VCC.
Thermal performance is governed by case-to-heatsink conduction via the insulated TO-220F tab; power dissipation drops linearly from 30 W at TC = 25°C to 0 W at TC = 150°C. The device exhibits tON = 0.8 µs, tSTG = 2 µs, and tF = 2.5 µs under specified test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -60 V - Maximum allowable collector-emitter voltage before breakdown in open-base condition |
| IC(DC) | -7 A - Continuous collector current rating defining steady-state power switch capability |
| VCE(sat) | -1.3 V (max) at -7 A/-14 mA - Low saturation voltage enables <1.5 W conduction loss at full rated current |
| hFE | 1000 (min) at -7 A - Ensures reliable turn-on with modest base drive in high-current switching |
| PC(TC=25°C) | 30 W - Maximum dissipation achievable with adequate heatsinking at 25°C case temperature |
| tF | 2.5 µs - Fall time limiting maximum practical switching frequency in hard-switched topologies |
Pinout & Package
Package: TO-220F - Full-molded plastic package with electrically insulated metal tab (0.5 mm creepage/clearance), enabling direct mounting to grounded heatsinks without isolation hardware.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input | Receives negative base current to initiate and sustain conduction; requires current-limiting resistor in series |
| 2 (Collector) | High-side current path | Connected to negative rail in high-side switch configurations; carries full load current |
| 3 (Emitter) | Output reference node | Typically tied to system ground or positive supply; serves as common return for load current |
Key Features
| Feature | Design Value |
|---|---|
| High DC current gain | hFE ≥ 1000 at -7 A ensures stable saturation with ≤14 mA base drive, reducing driver stage complexity |
| Low VCE(sat) | -1.3 V max at full rated current limits conduction losses to <9.1 W, easing thermal management |
| Insulated TO-220F package | Electrically isolated metal tab allows direct attachment to grounded heatsinks without mica washers or thermal pads |
| Complementary pairing | Explicitly designed as PNP counterpart to NPN KSD1417, enabling matched performance in push-pull and H-bridge circuits |
Applications
| Motor Control | Relay Driving |
|---|---|
Use Scenario: Controlling 24 V DC brushed motors in industrial actuators requiring bidirectional torque and stall current handling up to 6 A. IC Role / Device Role / Timing Role: High-side PNP Darlington switch providing low-loss current path during active conduction phase. Use Value: -1.3 V VCE(sat) minimizes heat generation during continuous duty, extending motor driver lifespan. | Use Scenario: Energizing 12 V/500 mA electromagnetic relays in PLC output modules with fast turn-off and minimal contact arcing. IC Role / Device Role / Timing Role: Saturated switch delivering precise timing-controlled coil current with tF = 2.5 µs ensuring clean de-energization. Use Value: Fast fall time prevents relay chatter and reduces contact wear during repeated cycling. |
| Power Supply Regulation | Industrial Lighting Control |
Use Scenario: Series pass element in linear adjustable regulators supplying up to 5 A at ≤40 V output with thermal foldback protection. IC Role / Device Role / Timing Role: Linear-mode PNP transistor regulating output voltage via base bias control loop. Use Value: SOA curve validated to 100 µs pulses supports transient overload handling without second breakdown. | Use Scenario: Dimmable ballast control for HID lamps in street lighting systems operating at 100–240 V AC input with DC bus switching. IC Role / Device Role / Timing Role: High-current switch interfacing microcontroller PWM signals to lamp driver stage. Use Value: Insulated TO-220F package simplifies EMI-filtered heatsink integration in compact outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP Darlington switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD122 | VCEO = -100 V, IC = -8 A, VCE(sat) = -1.5 V (max) at -8 A, TO-252 package | Higher voltage rating but surface-mount only; lacks insulated tab for direct heatsink mounting | Preferred when board space is constrained and higher breakdown margin is required, but thermal interface must be re-engineered |
| BDW53C | VCEO = -100 V, IC = -12 A, VCE(sat) = -2.0 V (max) at -12 A, TO-220 package (non-insulated) | Higher current rating but higher saturation voltage and non-insulated tab requiring isolation hardware | Selected when ultimate current capacity outweighs thermal efficiency and mechanical integration simplicity |
Compared with MJD122 and BDW53C, the KSB1022TU offers optimal balance of low VCE(sat), TO-220F insulation, and proven SOA for 24–48 V industrial switching-making it preferred where thermal reliability and mechanical integration ease are prioritized over raw voltage or current headroom.
Availability
KSB1022TU is available at Aetrix Electronics and suitable for motor control, relay driving, and linear power regulation requiring stable component supply, long-lifecycle support, and traceable sourcing for industrial OEM programs.
Supply support for KSB1022TU 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 is a global semiconductor supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and IoT applications.
The KSB1022TU belongs to Fairchild's legacy high-power bipolar transistor family, engineered specifically for robust, thermally efficient switching in industrial control and power conversion systems where reliability under sustained load is critical.
FAQ
What is the maximum continuous collector current rating for the KSB1022TU?
The KSB1022TU has a maximum continuous collector current (IC) rating of -7 A at TA = 25°C. This rating assumes proper heatsinking and operation within the device's safe operating area. At higher ambient or case temperatures, current must be reduced per the published derating curve, with zero dissipation at TC = 150°C. The KSB1022TU maintains this rating under DC conditions when mounted on an adequately sized heatsink.
Does the KSB1022TU have an electrically insulated package?
Yes, the KSB1022TU uses the TO-220F package with an electrically insulated metal tab, allowing direct mounting to a grounded heatsink without additional isolation hardware. This insulation meets minimum creepage and clearance requirements per datasheet specification (0.5 mm). The KSB1022TU's insulated tab simplifies thermal design in high-density industrial power stages where grounding integrity is critical.
What is the typical DC current gain (hFE) of the KSB1022TU at full rated current?
The KSB1022TU guarantees a minimum hFE of 1000 at VCE = -3 V and IC = -7 A, with typical values reaching 15000 under the same conditions. This high gain enables reliable saturation using ≤14 mA of base current, reducing driver-stage component count and power consumption. The KSB1022TU's hFE remains stable across its operating range, supporting consistent switching performance in production environments.
How does the KSB1022TU compare to the KSD1417 transistor?
The KSB1022TU is explicitly designated as the PNP complement to the NPN KSD1417, sharing matching voltage ratings (-60 V), current capability (-7 A), and thermal characteristics. Both devices use TO-220F packaging and exhibit closely aligned saturation voltages and switching times. The KSB1022TU and KSD1417 are intended for paired use in symmetrical topologies such as H-bridges and push-pull amplifiers where matched gain and timing are essential.
What is the safe operating area (SOA) limitation for the KSB1022TU in pulse applications?
The KSB1022TU's SOA is defined for pulse widths from DC up to 100 µs at VCE = -45 V, with peak current decreasing as pulse duration increases. At 100 µs, the maximum allowable collector current is approximately -5 A. This SOA data is graphically documented in Figure 5 of the original Fairchild datasheet. Designers must ensure transient loads remain within this boundary to prevent second breakdown failure in the KSB1022TU.
KSB1022TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- PNP - Darlington
- Current - Collector (Ic) (Max):
- 7 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 2V @ 14mA, 7A
- Current - Collector Cutoff (Max):
- 100µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 2000 @ 3A, 3V
- Power - Max:
- 2 W
- Frequency - Transition:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220F-3
KSB1022TU FAQ
1.How can I place an order for KSB1022TU through Aetrix?
Please submit a Request for Quotation (RFQ) for KSB1022TU 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 KSB1022TU reliable?
The price and inventory of KSB1022TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSB1022TU is usually 5 days.
3.What payment methods are accepted for KSB1022TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSB1022TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSB1022TU?
KSB1022TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSB1022TU 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 KSB1022TU?
For technical support, including KSB1022TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSB1022TU requirements.
6.How does Aetrix verify that KSB1022TU is sourced from the original manufacturer or authorized distributors?
All KSB1022TU 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 KSB1022TU meets industry standards.
7.What is the process for return or replacement of KSB1022TU?
All KSB1022TU units undergo pre-shipment inspection (PSI). If there is an issue with KSB1022TU, 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 KSB1022TU part is unused and in its original packaging.
Return procedure for KSB1022TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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