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onsemi KSH3055TF
, SC-63.JPG)
- Part No.:
- KSH3055TF
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
KSH3055TF.pdf
- Description:
- TRANS NPN 60V 10A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:6,359
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Product details
Overview
KSH3055TF from ON Semiconductor is an NPN epitaxial silicon transistor designed for general-purpose amplification and low-speed switching applications, with VCEO = 60 V, IC = 10 A, PC = 20 W (TC = 25°C), and hFE ≥ 20 at IC = 4 A - commonly used in power supply control stages and motor drive interface circuits.
For engineers reviewing the KSH3055TF datasheet, pinout, applications, or equivalent options, key selection considerations include its D-PAK surface-mount package, DC current gain specified up to 10 A, collector-emitter sustaining voltage of 60 V, and saturation voltage performance under high-current switching conditions.
Technical Context
The KSH3055TF operates as a medium-power bipolar junction transistor with a single NPN structure optimized for linear amplification and robust switching in industrial control and power conversion circuits. Its fT = 2 MHz (min) supports stable gain at audio and low-frequency switching speeds, while VCE(sat) ≤ 1.1 V at IC = 4 A / IB = 0.4 A enables efficient conduction in saturated-mode operation.
Thermal design is enabled by its D-PAK package with case-to-ambient thermal resistance of ~71.4°C/W and maximum junction temperature of 150°C. The device features electrically similar characteristics to KSE3055T but with lead-formed D-PAK mounting geometry, supporting surface-mount assembly without through-hole rework.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - Maximum collector-emitter voltage before breakdown; sets upper limit for switch voltage swing in DC-DC or relay driver circuits. |
| IC | 10 A - Continuous collector current rating; defines usable load current range in power stage interfaces. |
| PC (TC=25°C) | 20 W - Maximum power dissipation at case temperature 25°C; requires heatsinking above ambient for sustained 10 A operation. |
| hFE (IC=4 A) | 20–100 - DC current gain range at mid-load; determines required base drive current for reliable saturation. |
| VCE(sat) (IC=4 A, IB=0.4 A) | ≤1.1 V - Low saturation voltage reduces conduction loss and self-heating during on-state operation. |
| fT | ≥2 MHz - Minimum current-gain bandwidth product; ensures adequate small-signal gain stability up to audio frequencies. |
Pinout & Package
D-PAK (TO-252) surface-mount package with exposed drain pad for thermal enhancement; standardized 3-pin configuration with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input terminal | Receives forward-biased base current to enable conduction between collector and emitter. |
| 2 (Collector) | High-side current path | Connected to positive supply or load return; carries full output current when saturated. |
| 3 (Emitter) | Reference/return node | Typically grounded or tied to common reference; forms current return path and defines emitter-follower bias point. |
Key Features
| Feature | Design Value |
|---|---|
| DC current gain specified to 10 A | Ensures predictable base drive requirements across full rated load range, simplifying gate/base driver sizing. |
| High fT bandwidth (≥2 MHz) | Supports stable amplification and fast turn-on/turn-off transitions in low-frequency switching applications. |
| D-PAK surface-mount package | Enables automated PCB assembly and improved thermal coupling to copper pour or heatsink pads. |
| Collector-emitter sustaining voltage (VCEO(sus)) = 60 V | Guarantees safe operation under transient overvoltage conditions in inductive load switching. |
Applications
| Industrial Power Supply Control | DC Motor Interface Stage |
|---|---|
|
Use Scenario: Regulating auxiliary rail voltage in 24 V industrial SMPS using discrete transistor-based linear pass or switching control. IC Role / Device Role / Timing Role: NPN switching transistor operating in saturation/cutoff mode to modulate current flow into error amplifier or optocoupler feedback path. Use Value: VCEO = 60 V and IC = 10 A allow direct integration into 48 V input-derived rails without external voltage clamping. |
Use Scenario: Driving small brushed DC motors (up to 50 W) in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: Low-speed switching element controlling motor direction and enable via H-bridge half-bridge configuration. Use Value: VCE(sat) ≤ 1.1 V at 4 A minimizes resistive heating during continuous PWM operation at 1–10 kHz. |
| AC/DC Adapter Feedback Circuit | Relay Driver Interface |
|
Use Scenario: Isolating and scaling primary-side feedback signals in offline flyback converters using optocoupler-coupled transistor stages. IC Role / Device Role / Timing Role: General-purpose amplifier buffering TL431 reference voltage before transmission across optocoupler LED. Use Value: hFE ≥ 20 at IC = 4 A ensures stable current transfer ratio (CTR) margin across temperature and aging. |
Use Scenario: Amplifying microcontroller GPIO outputs to energize 12–24 V electromagnetic relays in building automation panels. IC Role / Device Role / Timing Role: Single-stage current amplifier interfacing 3.3 V/5 V logic to coil loads requiring 20–100 mA drive. Use Value: VBE(on) = 1.8 V at IC = 4 A allows direct drive from standard CMOS outputs without level-shifting circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD3055T | Same VCEO = 60 V, IC = 10 A, but TO-252-3 (D-PAK) package with slightly higher VCE(sat) (1.2 V typ. at 4 A). | Identical mounting footprint; suitable for drop-in replacement where margin exists for 0.1 V higher saturation loss. | Select when sourcing flexibility is prioritized and thermal budget permits minor conduction loss increase. |
| KSE3055T | Electrically similar per datasheet, but supplied in I-PAK (TO-220AB) through-hole package with higher RθJA. | Requires PCB redesign for through-hole mounting; better suited for prototyping or legacy board reuse. | Choose for hand-soldered evaluation or when mechanical retention and manual heatsink attachment are preferred. |
Compared with MJD3055T and KSE3055T, the KSH3055TF offers identical electrical ratings in a surface-mount D-PAK variant optimized for automated production, while maintaining compatibility with Fairchild's legacy KSE3055T performance envelope - making it ideal for volume-manufactured industrial controls where layout density and assembly efficiency matter.
Availability
KSH3055TF is available at Aetrix Electronics and suitable for industrial power supply control, DC motor interface stages, AC/DC adapter feedback circuits, and relay driver interfaces requiring stable component supply and long-term manufacturability.
Supply support for KSH3055TF 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 manufacturer specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The KSH3055TF belongs to ON Semiconductor's legacy Fairchild power bipolar transistor family, engineered for cost-effective, thermally robust amplification and switching in industrial control and power conversion systems.
FAQ
What is the package type of the KSH3055TF?
The KSH3055TF uses a D-PAK (TO-252-3) surface-mount package with gull-wing leads and an exposed thermal pad. This package supports automated placement and provides superior thermal performance compared to through-hole alternatives like I-PAK, enabling efficient heat transfer to PCB copper areas in high-current applications involving the KSH3055TF.
Does the KSH3055TF have a specified fT value?
Yes, the KSH3055TF has a minimum current-gain bandwidth product (fT) of 2 MHz, measured at VCE = 10 V and IC = 500 mA. This specification confirms the KSH3055TF's suitability for audio-frequency amplification and low-speed switching applications where signal integrity up to several megahertz must be maintained.
What is the maximum collector current rating for the KSH3055TF?
The KSH3055TF is rated for a continuous collector current (IC) of 10 A at TC = 25°C. Derating is required above this case temperature, and actual usable current depends on PCB thermal design and heatsinking. This rating makes the KSH3055TF appropriate for medium-power switching tasks such as motor drivers and power supply regulation where the KSH3055TF handles peak load currents reliably.
How does the KSH3055TF compare to the KSE3055T?
The KSH3055TF is electrically similar to the KSE3055T but packaged in D-PAK instead of I-PAK. Both share identical VCEO, IC, and hFE specifications, but the KSH3055TF supports surface-mount assembly while the KSE3055T requires through-hole mounting. Designers selecting the KSH3055TF gain manufacturing efficiency without sacrificing electrical performance.
What is the VCE(sat) of the KSH3055TF under typical operating conditions?
The KSH3055TF exhibits VCE(sat) ≤ 1.1 V at IC = 4 A and IB = 0.4 A, and ≤ 8 V at IC = 10 A and IB = 3.3 A. These values reflect the KSH3055TF's ability to minimize conduction losses in saturated switching applications, directly impacting thermal management and system efficiency when the KSH3055TF is used in power control stages.
KSH3055TF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 10 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 8V @ 3.3A, 10A
- Current - Collector Cutoff (Max):
- 50µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 20 @ 4A, 4V
- Power - Max:
- 1.75 W
- Frequency - Transition:
- 2MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
KSH3055TF FAQ
1.How can I place an order for KSH3055TF through Aetrix?
Please submit a Request for Quotation (RFQ) for KSH3055TF 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 KSH3055TF reliable?
The price and inventory of KSH3055TF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSH3055TF is usually 5 days.
3.What payment methods are accepted for KSH3055TF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSH3055TF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSH3055TF?
KSH3055TF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSH3055TF 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 KSH3055TF?
For technical support, including KSH3055TF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSH3055TF requirements.
6.How does Aetrix verify that KSH3055TF is sourced from the original manufacturer or authorized distributors?
All KSH3055TF 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 KSH3055TF meets industry standards.
7.What is the process for return or replacement of KSH3055TF?
All KSH3055TF units undergo pre-shipment inspection (PSI). If there is an issue with KSH3055TF, 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 KSH3055TF part is unused and in its original packaging.
Return procedure for KSH3055TF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KSH3055TF Tags
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