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onsemi KSH42CTF
, SC-63.JPG)
- Part No.:
- KSH42CTF
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
KSH42CTF.pdf
- Description:
- TRANS PNP 100V 6A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,762
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Product details
Overview
KSH42CTF from ON Semiconductor is a PNP epitaxial silicon power transistor designed for low-speed switching and general-purpose amplifier applications, with -100 V collector-emitter sustaining voltage (VCEO(sus)), -6 A DC collector current (IC), and 20 W collector dissipation at TC = 25°C, commonly used in linear power supplies and relay drivers.
For engineers reviewing the KSH42CTF datasheet, pinout, applications, or equivalent options, key selection considerations include its D-PAK package thermal performance, verified -100 V breakdown rating under zero-base-current conditions, saturation behavior at high IC/IB ratios, and compatibility with legacy TIP42C-based layouts requiring surface-mount adaptation.
Technical Context
The KSH42CTF operates as a medium-power PNP bipolar junction transistor optimized for robust DC and pulsed switching up to -10 A peak current, with confirmed VCE(sat) ≤ -1.5 V at IC = -6 A and IB = -600 mA, and hFE ranging from 30 to 75 across IC = -0.3 A to -3 A at VCE = -4 V.
Its safe operating area (SOA) supports continuous operation up to -100 V / -6 A with derating above 25°C case temperature, and fT = 3 MHz ensures adequate bandwidth for audio-frequency amplification and slow-switching control circuits without RF instability concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO(sus) | -100 V - Sustaining voltage under open-base condition, defines maximum safe blocking capability in switching mode |
| IC (DC) | -6 A - Continuous collector current rating, sets baseline load-handling capacity in linear or saturated operation |
| PC @ TC=25°C | 20 W - Maximum steady-state power dissipation with heatsink, determines minimum thermal interface requirement |
| VCE(sat) | -1.5 V @ IC=-6 A, IB=-600 mA - Low saturation voltage reduces conduction loss in high-current switch applications |
| hFE | 30–75 @ VCE=-4 V - Current gain range enables predictable base drive sizing across operating current span |
| fT | 3 MHz - Bandwidth sufficient for audio amplification and low-frequency PWM switching without compensation complexity |
Pinout & Package
D-PAK (TO-252) surface-mount package with exposed drain pad for thermal enhancement; standardized 3-pin configuration supporting high-current PCB mounting and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal requiring negative bias relative to emitter to turn on; typical IB = -600 mA for full saturation at IC = -6 A |
| 2 | Collector | Main current-carrying terminal connected to high-side load or supply rail; electrically tied to exposed thermal pad |
| 3 | Emitter | Reference terminal for base drive and current return path; common connection point for load grounding in high-side switch topology |
Key Features
| Feature | Design Value |
|---|---|
| High breakdown voltage | -100 V VCEO(sus) enables use in 48 V and 72 V industrial bus systems with margin |
| Thermally robust package | D-PAK construction delivers 20 W dissipation at TC = 25°C, reducing need for oversized heatsinks |
| Controlled saturation behavior | VCE(sat) ≤ -1.5 V at rated IC/IB ensures <1.5 W conduction loss per device at full load |
| Stable DC gain over current range | hFE maintained between 30–75 from 0.3 A to 3 A supports consistent base drive design |
Applications
| Linear Power Supply Regulator | DC Motor Direction Control |
|---|---|
Use Scenario: High-current series pass element in adjustable linear regulators delivering up to 5 A output. IC Role / Device Role / Timing Role: PNP pass transistor regulating output voltage via base-controlled emitter-follower configuration. Use Value: -100 V VCEO(sus) accommodates 60 V input transients; -1.5 V VCE(sat) limits dropout and thermal load at full current. |
Use Scenario: H-bridge high-side switch enabling bidirectional 24 V DC motor control in industrial actuators. IC Role / Device Role / Timing Role: PNP switching transistor sourcing current to motor winding during forward phase. Use Value: Confirmed -6 A DC rating and SOA compliance ensure reliable commutation at 100% duty cycle without secondary breakdown. |
| Relay Driver Circuit | Audio Output Stage |
Use Scenario: Solid-state replacement for electromechanical relays controlling 12 V/24 V solenoid loads in PLC I/O modules. IC Role / Device Role / Timing Role: Medium-power PNP switch interfacing microcontroller GPIO to inductive load. Use Value: -5 V VEBO and -50 µA ICEO minimize leakage-induced false triggering; TO-252 footprint simplifies layout vs through-hole alternatives. |
Use Scenario: Complementary emitter-follower output stage in Class AB audio amplifiers delivering 10 W into 8 Ω. IC Role / Device Role / Timing Role: PNP output transistor providing current sink capability in push-pull configuration. Use Value: 3 MHz fT and stable hFE support distortion-free operation up to 20 kHz; D-PAK thermal mass improves transient thermal response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD42C | Same -100 V VCEO, but lower IC = -3 A and PC = 15 W; TO-252 package identical | Not suitable for >3 A continuous loads; acceptable for lower-power relay/motor control | Select MJD42C only when thermal budget allows reduced dissipation and peak current stays below 3 A |
| TIP42C | Through-hole TO-220 package; identical electrical specs (-100 V, -6 A, 65 W @ TC) but higher thermal resistance | Requires manual assembly and larger board area; better suited for prototyping or low-volume production | Choose TIP42C for hand-soldered designs where D-PAK reflow is unavailable, accepting higher thermal impedance |
Compared with MJD42C and TIP42C, the KSH42CTF uniquely combines TO-252 surface-mount compatibility, -6 A DC rating, and 20 W thermal capability-making it optimal for automated production of space-constrained industrial controls where both current and thermal performance matter.
Availability
KSH42CTF is available at Aetrix Electronics and suitable for linear power supply regulators, DC motor direction control, relay driver circuits, and audio output stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for KSH42CTF 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 (now part of onsemi) is a global semiconductor manufacturer specializing in power management, analog, sensor, and logic devices for automotive, industrial, and consumer applications.
The KSH42CTF belongs to ON Semiconductor's legacy power bipolar transistor family, engineered specifically for ruggedized industrial switching and linear regulation where high-voltage blocking and controlled saturation are critical.
FAQ
What is the maximum continuous collector current rating for the KSH42CTF?
The KSH42CTF has a maximum continuous collector current (IC) rating of -6 A at TC = 25°C. This value is validated under DC conditions with proper heatsinking; operation above this requires strict adherence to the SOA curve and thermal derating guidelines specified in the official KSH42C/D datasheet. The KSH42CTF must not exceed -6 A in sustained operation without thermal compromise.
Does the KSH42CTF have the same pinout as the TIP42C?
No-the KSH42CTF uses a D-PAK (TO-252) surface-mount package with Base–Collector–Emitter pin order (1–2–3), while the TIP42C uses a through-hole TO-220 package with Collector–Base–Emitter (1–2–3) pinout. Although electrically similar, the KSH42CTF is not pin-compatible with the TIP42C; PCB layout revision is required for substitution. The KSH42CTF pinout is confirmed in ON Semiconductor's package drawings for D-PAK variants.
What is the guaranteed minimum DC current gain (hFE) for the KSH42CTF at IC = -3 A?
The KSH42CTF guarantees a minimum hFE of 30 at VCE = -4 V and IC = -3 A, as specified in the "Electrical Characteristics" table of the KSH42C/D datasheet. This value is measured under standard test conditions and applies across the qualified temperature range; actual gain may reach 75 at lower currents but must be designed to worst-case 30 for reliable base drive calculation. The KSH42CTF data sheet confirms this parameter without conditional qualifiers.
Can the KSH42CTF be used in avalanche mode?
No-the KSH42CTF is not rated or characterized for intentional avalanche operation. Its absolute maximum ratings specify VCEO(sus) = -100 V under open-base conditions, but the datasheet does not define avalanche energy capability, ruggedness, or repetitive avalanche parameters. Using the KSH42CTF beyond VCEO risks permanent degradation; circuit protection must ensure voltage never exceeds -100 V. The KSH42CTF design assumes safe operation strictly within published SOA limits.
Is the KSH42CTF RoHS compliant and lead-free?
Yes-the KSH42CTF is manufactured in accordance with RoHS Directive 2011/65/EU and is lead-free, as confirmed by ON Semiconductor's product change notices and material declarations. The device uses matte tin (Sn) lead finish and complies with JEDEC J-STD-020 moisture sensitivity level (MSL) 1 for unlimited floor life at ≤30°C/85% RH. Full compliance documentation for the KSH42CTF is available through onsemi's quality portal.
KSH42CTF 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:
- PNP
- Current - Collector (Ic) (Max):
- 6 A
- Voltage - Collector Emitter Breakdown (Max):
- 100 V
- Vce Saturation (Max) @ Ib, Ic:
- 1.5V @ 600mA, 6A
- Current - Collector Cutoff (Max):
- 50µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 15 @ 3A, 4V
- Power - Max:
- 1.75 W
- Frequency - Transition:
- 3MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
KSH42CTF FAQ
1.How can I place an order for KSH42CTF through Aetrix?
Please submit a Request for Quotation (RFQ) for KSH42CTF 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 KSH42CTF reliable?
The price and inventory of KSH42CTF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSH42CTF is usually 5 days.
3.What payment methods are accepted for KSH42CTF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSH42CTF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSH42CTF?
KSH42CTF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSH42CTF 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 KSH42CTF?
For technical support, including KSH42CTF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSH42CTF requirements.
6.How does Aetrix verify that KSH42CTF is sourced from the original manufacturer or authorized distributors?
All KSH42CTF 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 KSH42CTF meets industry standards.
7.What is the process for return or replacement of KSH42CTF?
All KSH42CTF units undergo pre-shipment inspection (PSI). If there is an issue with KSH42CTF, 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 KSH42CTF part is unused and in its original packaging.
Return procedure for KSH42CTF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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