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onsemi MJD41CTF
- Part No.:
- MJD41CTF
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
MJD41CTF.pdf
- Description:
- TRANS NPN 100V 6A TO-252AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,580
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Product details
Overview
MJD41CTF from ON Semiconductor is an NPN epitaxial silicon power transistor in D-PAK surface-mount package, rated for 100 V VCEO, 6 A continuous collector current, and 20 W collector dissipation at TC = 25°C. It serves as a general-purpose amplifier and low-speed switching device in DC motor drives, relay drivers, and power supply output stages.
For engineers reviewing the MJD41CTF datasheet, pinout, applications, or equivalent options, key selection criteria include its 100 V breakdown rating, 6 A DC current capability, 1.5 V VCE(sat) at IC = 6 A / IB = 600 mA, junction temperature limit of 150°C, and compatibility with legacy TIP41C-based layouts requiring surface-mount upgrade.
Technical Context
The MJD41CTF operates as a single NPN bipolar junction transistor optimized for linear amplification and robust switching in medium-power applications. Its design emphasizes high VCEO (100 V) and VCBO (100 V), low saturation voltage (1.5 V), and stable hFE range (30–75 at IC = 0.3 A, 15–75 at IC = 3 A).
It features a thermally efficient D-PAK (TO-252) package with exposed drain pad for PCB heat sinking, supports pulse currents up to 10 A, and maintains safe operating area (SOA) compliance up to 100 V × 6 A under specified test conditions (PW ≤ 300 µs, duty cycle ≤ 2%).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 100 V - Maximum collector-emitter voltage before breakdown; enables use in 48 V and 72 V DC bus systems. |
| IC (DC) | 6 A - Continuous collector current rating; supports sustained load switching in industrial controls. |
| PC (TC=25°C) | 20 W - Collector power dissipation at case temperature 25°C; requires heatsinking above ~1.5 W ambient operation. |
| VCE(sat) | 1.5 V @ IC=6 A, IB=600 mA - Low saturation voltage reduces conduction loss and thermal stress in switching mode. |
| hFE | 30–75 @ VCE=4 V, IC=0.3 A - Sufficient DC gain for base-driven switching without excessive drive current. |
| fT | 3 MHz @ VCE=10 V, IC=500 mA - Suitable for low-frequency (<100 kHz) switching and audio-frequency amplification. |
| TJ | 150°C - Maximum junction temperature; defines thermal derating envelope and reliability boundary. |
Pinout & Package
Package: D-PAK (TO-252-3), surface-mount, with exposed drain pad thermally connected to collector terminal. Dimensions: 9.50 mm × 6.10 mm × 2.70 mm (L × W × H), lead pitch 2.30 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Tab/Exposed Pad) | Collector | Electrically and thermally connected to collector; must be soldered to large copper pour for thermal management. |
| 2 | Base | Current-controlled input node; requires ≥600 mA base drive for full saturation at 6 A collector current. |
| 3 | Emitter | Common emitter reference; connects to ground or low-side return path in switch configurations. |
Key Features
| Feature | Design Value |
|---|---|
| NPN Bipolar Construction | Enables simple current-source biasing and predictable hFE-based drive design in discrete amplifier/switch stages. |
| D-PAK Surface-Mount Package | Provides mechanical robustness and thermal performance comparable to through-hole TO-220, with automated assembly compatibility. |
| 100 V Breakdown Rating | Supports direct interface with unregulated 48 V, 60 V, and 72 V industrial DC rails without external clamping. |
| Low VCE(sat) | Minimizes power loss (≤9 W at 6 A) and simplifies thermal design in space-constrained power modules. |
| Electrically Similar to TIP41C | Enables drop-in replacement in legacy designs transitioning from through-hole to surface-mount assembly. |
Applications
| DC Motor Control | Relay Driver Circuit |
|---|---|
Use Scenario: Driving brushed DC motors in industrial actuators and HVAC dampers at 24–48 V supply. IC Role / Device Role / Timing Role: NPN power switch controlling motor current path via emitter-follower or common-emitter configuration. Use Value: 6 A DC rating handles stall currents; 100 V VCEO accommodates back-EMF spikes during commutation. | Use Scenario: Solid-state replacement for electromechanical relays in PLC output modules and building automation panels. IC Role / Device Role / Timing Role: High-current switch energizing 24 V or 48 V relay coils with fast turn-on/turn-off response. Use Value: 1.5 V VCE(sat) limits coil driver loss; SOA ensures reliability during inductive kickback events. |
| Linear Power Supply Regulator | LED Array Driver |
Use Scenario: Pass transistor in adjustable linear regulators delivering up to 5 A at ≤40 V output. IC Role / Device Role / Timing Role: Series pass element dissipating excess voltage between unregulated input and regulated output. Use Value: 20 W PC at TC=25°C allows stable operation with moderate heatsinking; hFE supports feedback-loop stability. | Use Scenario: Constant-current driver for high-brightness LED strings in signage and architectural lighting. IC Role / Device Role / Timing Role: Current-regulating switch in linear or PWM-modulated LED current sink topology. Use Value: 6 A rating supports multi-string parallel drive; low VCE(sat) improves efficiency and reduces thermal load on LED thermal pads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BUW13A | Higher VCEO (130 V), lower hFE (10–40), TO-126 package | Requires through-hole mounting; better suited for higher-voltage flyback snubbers | Select when >100 V breakdown is mandatory and surface-mount is not required. |
| ON Semiconductor MJD44H11TF | Same D-PAK package, higher IC (8 A), higher VCE(sat) (2.0 V), complementary PNP | Designed for push-pull output stages; not a direct functional substitute | Choose only for complementary pair design; not recommended as standalone MJD41CTF replacement. |
Compared with BUW13A and MJD44H11TF, the MJD41CTF offers optimal balance of surface-mount compatibility, 100 V rating, and 6 A capability for cost-sensitive industrial switching-neither alternative matches its exact combination of D-PAK footprint, saturation voltage, and gain profile.
Availability
MJD41CTF is available at Aetrix Electronics and suitable for DC motor control, relay driving, and linear power supply regulation requiring stable component supply and long-term industrial availability.
Supply support for MJD41CTF 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, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The MJD41CTF belongs to ON Semiconductor's legacy power bipolar transistor product line, designed specifically for cost-effective, surface-mount replacement of through-hole devices like TIP41C in industrial control and power conversion.
FAQ
What is the maximum continuous collector current rating for the MJD41CTF?
The MJD41CTF has a maximum continuous collector current (IC) rating of 6 A at TC = 25°C. This rating assumes proper PCB thermal management via the exposed collector pad. At elevated case temperatures, current must be derated per the power derating curve in the datasheet-e.g., ~4.5 A at TC = 75°C. The MJD41CTF also supports 10 A pulsed collector current under strict conditions (PW ≤ 300 µs, duty cycle ≤ 2%).
Is the MJD41CTF pin-compatible with the TIP41C?
No, the MJD41CTF is not pin-compatible with the TIP41C due to differing packages: TIP41C uses TO-220 (through-hole), while MJD41CTF uses D-PAK (surface-mount). However, the MJD41CTF is electrically similar-same pinout order (1=Base, 2=Collector, 3=Emitter) and nearly identical electrical specs-making it a functional layout upgrade when redesigning for SMT assembly. The MJD41CTF requires PCB footprint revision but no circuit revalidation.
What is the typical VCE(sat) of the MJD41CTF under full-load conditions?
The typical VCE(sat) of the MJD41CTF is 1.5 V when IC = 6 A and IB = 600 mA at TC = 25°C. This value is guaranteed maximum in the datasheet. At lower currents (e.g., IC = 3 A), VCE(sat) drops to ~1.2 V. Designers should verify actual saturation voltage under their specific thermal and drive conditions, as VCE(sat) increases with junction temperature and decreases with higher base overdrive. The MJD41CTF's low saturation voltage directly reduces conduction losses in the MJD41CTF-based switch.
Does the MJD41CTF require a heatsink in standard operation?
Yes-the MJD41CTF requires thermal management even at moderate power levels. With a maximum PC of 20 W at TC = 25°C and a junction-to-case thermal resistance (RθJC) of ~1.25°C/W, dissipating just 5 W raises the junction temperature by ~6.25°C above case temperature. For reliable long-term operation, the MJD41CTF must be mounted on a PCB with ≥2 in² of 2-oz copper connected to the exposed collector pad. Forced air or external heatsinks are recommended above ~3 W continuous dissipation.
Can the MJD41CTF be used in linear amplifier applications?
Yes-the MJD41CTF is explicitly characterized for general-purpose amplification in its datasheet. Its hFE of 30–75 (at VCE = 4 V, IC = 0.3 A) and fT of 3 MHz support audio-frequency and low-speed signal amplification. However, it is not optimized for high-fidelity or RF use. In linear mode, strict attention to SOA limits and thermal design is essential-operation must stay within the DC Safe Operating Area curve to avoid second breakdown. The MJD41CTF performs best in Class AB or Class B output stages where quiescent current is carefully controlled.
MJD41CTF 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):
- 6 A
- Voltage - Collector Emitter Breakdown (Max):
- 100 V
- Vce Saturation (Max) @ Ib, Ic:
- 1.5V @ 600mA, 6A
- Current - Collector Cutoff (Max):
- 10µA
- 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:
- TO-252AA
MJD41CTF FAQ
1.How can I place an order for MJD41CTF through Aetrix?
Please submit a Request for Quotation (RFQ) for MJD41CTF 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 MJD41CTF reliable?
The price and inventory of MJD41CTF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJD41CTF is usually 5 days.
3.What payment methods are accepted for MJD41CTF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJD41CTF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJD41CTF?
MJD41CTF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJD41CTF 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 MJD41CTF?
For technical support, including MJD41CTF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJD41CTF requirements.
6.How does Aetrix verify that MJD41CTF is sourced from the original manufacturer or authorized distributors?
All MJD41CTF 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 MJD41CTF meets industry standards.
7.What is the process for return or replacement of MJD41CTF?
All MJD41CTF units undergo pre-shipment inspection (PSI). If there is an issue with MJD41CTF, 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 MJD41CTF part is unused and in its original packaging.
Return procedure for MJD41CTF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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