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onsemi MJB41CG
- Part No.:
- MJB41CG
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MJB41CG.pdf
- Description:
- TRANS NPN 100V 6A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:202
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Product details
Overview
MJB41CG from onsemi is an NPN silicon power transistor in D2PAK surface-mount package, rated for 100 VCEO, 6.0 A continuous collector current, and 65 W total power dissipation at TC = 25 °C. It serves as a medium-power switching or linear amplifier device in industrial motor drives, DC-DC converter output stages, and relay/valve driver circuits.
For engineers reviewing the MJB41CG datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal performance data, D2PAK mechanical interface details, and validated alternative parts for high-current bipolar switching designs requiring AEC-Q101-compliant options.
Technical Context
The MJB41CG operates as a standard NPN bipolar junction transistor with fixed gain structure (hFE = 30–75 at IC = 0.3 A), specified for linear and saturated switching modes. Its safe operating area (SOA) is defined up to 100 V and 6 A under single-pulse conditions, with secondary breakdown limits enforced at t ≤ 10 ms.
Thermal design relies on low RJC = 1.92 °C/W and RJA = 62.5 °C/W (FR-4 board, min pad), enabling 2.0 W dissipation at ambient temperature. The device supports unclamped inductive load energy of 62.5 mJ (IC = 2.5 A, L = 20 mH, VCC = 10 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 100 Vdc - Maximum collector-emitter voltage before breakdown under open-base condition; defines maximum supply rail compatibility. |
| IC (continuous) | 6.0 Adc - Continuous collector current rating at TC = 25 °C; determines steady-state load-handling capability. |
| PD @ TC = 25 °C | 65 W - Junction-to-case power limit; requires heatsink mounting for full-rated operation. |
| VCE(sat) | 1.5 Vdc @ IC = 6.0 A, IB = 600 mA - Saturation voltage defining conduction loss in switch-mode applications. |
| hFE | 30–75 - DC current gain range at IC = 0.3 A / 3.0 A; sets base drive requirements for saturation control. |
| fT | 3.0 MHz - Current-gain bandwidth product; indicates usable frequency limit for small-signal amplification. |
| RJC | 1.92 °C/W - Thermal resistance from junction to case; critical for heatsink sizing in high-power layouts. |
Pinout & Package
D2PAK (Case 418B-04) surface-mount plastic package with exposed drain tab (pin 2 and 4 tied internally to collector); lead-formed for automated assembly and Pb-free compatible (G suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal for forward-biased NPN operation; requires ≥600 mA base drive for full 6 A saturation. |
| 2 | Collector | Main high-current output terminal; electrically connected to exposed metal tab for thermal and electrical grounding. |
| 3 | Emitter | Current return path; referenced to ground or negative rail in common-emitter configurations. |
| 4 | Collector | Second collector connection tied internally to pin 2; improves current sharing and thermal spreading across PCB copper. |
Key Features
| Feature | Design Value |
|---|---|
| Electrically identical to TIP41 series | Enables drop-in replacement in legacy through-hole designs using adapter footprints or rework-compatible layouts. |
| AEC-Q101 qualified (NJV prefix variant) | Validated for automotive-grade reliability; MJB41CG shares process and test flow with NJVMJB41CT4G. |
| Unclamped inductive energy rating | 62.5 mJ at IC = 2.5 A - Supports snubberless relay/inductor switching without external clamping diodes. |
| Pb-free (G suffix) and RoHS compliant | Meets global environmental regulations; compatible with standard lead-free reflow profiles (peak 260 °C). |
| Low RJA on FR-4 (50 °C/W) | Enables 2.0 W ambient operation without heatsink when mounted per minimum recommended pad layout. |
Applications
| Industrial Motor Control | DC-DC Converter Output Stage |
|---|---|
Use Scenario: Driving 24–48 V brushed DC motors in PLC-controlled conveyor systems with PWM frequencies below 20 kHz. IC Role / Device Role / Timing Role: NPN power switch in common-emitter configuration, handling peak currents up to 6 A during stall conditions. Use Value: 1.5 VCE(sat) minimizes conduction loss at 6 A, reducing thermal stress and eliminating need for active cooling in enclosed enclosures. |
Use Scenario: High-current synchronous rectifier or freewheeling switch in 12 V input, 5 V/10 A isolated flyback converters. IC Role / Device Role / Timing Role: Bipolar output switch replacing MOSFETs where gate drive complexity must be minimized. Use Value: 3.0 MHz fT ensures stable switching response at 100 kHz PWM, while 100 V rating accommodates reflected voltage spikes. |
| Electromechanical Load Driver | Linear Regulator Pass Element |
Use Scenario: Controlling 120 VAC solenoids and pneumatic valves via opto-isolated Darlington drivers in factory automation panels. IC Role / Device Role / Timing Role: Final-stage NPN switch interfacing between logic-level driver ICs and inductive loads. Use Value: 62.5 mJ unclamped inductive energy rating allows direct connection to 20 mH coils without external TVS or clamp diodes. |
Use Scenario: Series pass transistor in adjustable 3 A linear regulators powering FPGA core supplies with tight ripple requirements. IC Role / Device Role / Timing Role: Voltage-controlled current source operating in active region with constant VBE bias. Use Value: hFE stability over −65 to +150 °C enables predictable current mirror behavior across industrial temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TIP41C | TO-220 through-hole package; identical VCEO, IC, PD, and hFE specs; no Pb-free marking by default. | Requires manual soldering or wave soldering; unsuitable for fully SMT production lines. | Select TIP41C only when retrofitting legacy boards or avoiding SMT reflow process qualification. |
| NJVMJB41CT4G | Same D2PAK package, Pb-free, AEC-Q101 qualified; differs only in tape-and-reel packaging (800/reel vs. MJB41CG's 50/rail) and NJV prefix traceability. | Designed for automotive production with PPAP documentation; identical electrical and thermal performance. | Choose NJVMJB41CT4G for new automotive designs requiring certified change control and lot traceability. |
Compared with TIP41C, MJB41CG offers surface-mount compatibility and Pb-free compliance without sacrificing electrical performance; versus NJVMJB41CT4G, it provides identical silicon and thermal behavior but targets industrial rather than automotive qualification workflows.
Availability
MJB41CG is available at Aetrix Electronics and suitable for industrial motor control, DC-DC converter output stages, and electromechanical load driver applications requiring stable component supply and long-term obsolescence management.
Supply support for MJB41CG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in power management, analog, sensor, and discrete devices for automotive, industrial, and cloud infrastructure markets.
The MJB41CG belongs to onsemi's complementary silicon power transistor family designed for robust, cost-effective switching and amplification in high-current industrial and automotive subsystems.
FAQ
What is the maximum junction temperature rating for the MJB41CG?
The MJB41CG has an operating junction temperature range of −65 °C to +150 °C, as specified in its Absolute Maximum Ratings table. This wide range supports deployment in harsh industrial environments, including motor control cabinets and outdoor power conversion units where ambient temperatures exceed 85 °C. The device's thermal resistance values (RJC = 1.92 °C/W, RJA = 62.5 °C/W) allow precise junction temperature calculation under real-world PCB and heatsink conditions.
Is the MJB41CG pin-compatible with the TIP41C transistor?
No, the MJB41CG is not pin-compatible with the TIP41C due to differing packages: MJB41CG uses D2PAK (4-pin surface-mount), while TIP41C uses TO-220 (3-pin through-hole). Although their electrical specifications match exactly, the physical interface, thermal path, and PCB footprint differ fundamentally. Engineers must redesign the layout to accommodate the D2PAK's dual-collector tab and surface-mount solder pads when migrating from TIP41C.
Does the MJB41CG require a heatsink for 6 A continuous operation?
Yes, the MJB41CG requires a heatsink for 6 A continuous operation because its 65 W power dissipation rating applies only at TC = 25 °C - meaning the case (not ambient) must be held at 25 °C. At 6 A and VCE(sat) = 1.5 V, conduction loss is 9 W; without forced cooling or a heatsink, junction temperature will exceed 150 °C even with moderate ambient conditions. A heatsink maintaining TC ≤ 65 °C is necessary for reliable 6 A DC use.
What does the "G" suffix in MJB41CG signify?
The "G" suffix in MJB41CG indicates a Pb-free (lead-free) package compliant with RoHS Directive 2011/65/EU. It confirms that the device uses tin-silver-copper (SAC) solder terminations and halogen-free molding compound. This designation also aligns with onsemi's internal Pb-free manufacturing standards and qualifies the part for lead-free reflow processes with peak temperatures up to 260 °C, as verified in the datasheet's maximum lead temperature specification.
Can the MJB41CG be used in avalanche mode for inductive load switching?
No, the MJB41CG is not rated or characterized for repetitive avalanche operation. While its unclamped inductive energy rating (62.5 mJ) validates single-pulse robustness under controlled test conditions (IC = 2.5 A, L = 20 mH), the datasheet does not specify avalanche voltage, energy derating curves, or repetitive SOA boundaries. For sustained inductive switching, external clamping (e.g., flyback diode or TVS) remains mandatory to prevent junction failure.
MJB41CG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Active
- 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):
- 700µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 15 @ 3A, 4V
- Power - Max:
- 2 W
- Frequency - Transition:
- 3MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
MJB41CG FAQ
1.How can I place an order for MJB41CG through Aetrix?
Please submit a Request for Quotation (RFQ) for MJB41CG 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 MJB41CG reliable?
The price and inventory of MJB41CG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJB41CG is usually 5 days.
3.What payment methods are accepted for MJB41CG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJB41CG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJB41CG?
MJB41CG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJB41CG 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 MJB41CG?
For technical support, including MJB41CG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJB41CG requirements.
6.How does Aetrix verify that MJB41CG is sourced from the original manufacturer or authorized distributors?
All MJB41CG 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 MJB41CG meets industry standards.
7.What is the process for return or replacement of MJB41CG?
All MJB41CG units undergo pre-shipment inspection (PSI). If there is an issue with MJB41CG, 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 MJB41CG part is unused and in its original packaging.
Return procedure for MJB41CG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MJB41CG Tags
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