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onsemi MJB41C
- Part No.:
- MJB41C
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MJB41C.pdf
- Description:
- TRANS NPN 100V 6A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:7,195
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Product details
Overview
MJB41C 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 MJB41C datasheet, pinout, applications, or equivalent options, key selection criteria include its 1.92 °C/W junction-to-case thermal resistance, VCE(sat) ≤ 1.5 V at IC = 6.0 A / IB = 600 mA, hFE range of 15–75, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The MJB41C is a complementary NPN power transistor electrically identical to the legacy TIP41 series, designed for high-current switching and linear amplification with robust safe operating area (SOA) up to 100 V and 6 A under pulsed conditions. Its D2PAK package enables surface-mount assembly while delivering low thermal resistance to heatsink via the exposed collector tab.
It operates across −65 °C to +150 °C junction temperature range, supports unclamped inductive load energy of 62.5 mJ (IC = 2.5 A, L = 20 mH), and exhibits fT = 3.0 MHz for moderate-frequency switching applications such as PWM motor control and power supply regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 100 V - Maximum collector-emitter voltage before breakdown; defines maximum blocking capability in switch-mode operation. |
| IC (continuous) | 6.0 A - Continuous collector current rating; determines steady-state load-handling capacity without derating. |
| PD @ TC = 25 °C | 65 W - Maximum power dissipation at case temperature 25 °C; requires heatsinking for sustained operation. |
| VCE(sat) | ≤1.5 V @ IC/IB = 10 - Low saturation voltage minimizes conduction loss in switching applications. |
| hFE | 15–75 @ IC = 3.0 A - DC current gain range informs base drive design; lower end applies at full rated current. |
| RJC | 1.92 °C/W - Junction-to-case thermal resistance; critical for calculating heatsink requirements in high-power designs. |
| fT | 3.0 MHz - Current-gain bandwidth product; sets upper limit for small-signal amplification or switching frequency. |
Pinout & Package
Package: D2PAK (Case 418B−04), surface-mount plastic power package with exposed collector tab for thermal conduction and mechanical anchoring.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal; accepts base current to bias transistor into active or saturation region. |
| 2 | Collector | Main current-carrying terminal connected to heatsink via exposed metal tab; carries load current from supply. |
| 3 | Emiter | Current return path; common reference point for emitter-follower or grounded-emitter configurations. |
| 4 | Collector | Second collector connection-electrically tied to Pin 2; enhances current handling and thermal spreading. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics requiring PPAP compliance. |
| D2PAK surface-mount form factor | Enables automated PCB assembly while supporting high thermal performance via direct heatsink mounting. |
| Electrically identical to TIP41 series | Allows drop-in replacement in legacy designs without circuit or layout modification. |
| Pb-free packaging (G suffix) | Meets RoHS Directive 2011/65/EU; compatible with lead-free reflow soldering profiles up to 260 °C for 10 s. |
| Unclamped inductive switching capability | Withstands 62.5 mJ energy in inductive turn-off events, enabling robust operation in relay and solenoid drivers. |
Applications
| Industrial Motor Control | DC-DC Converter Output Stage |
|---|---|
|
Use Scenario: Driving brushed DC motors in factory automation systems with PWM frequencies up to 20 kHz. IC Role / Device Role / Timing Role: NPN power switch controlling motor current flow between supply rail and ground. Use Value: 65 W power rating and 1.92 °C/W RJC enable stable operation at 4–5 A continuous load with minimal heatsink volume. |
Use Scenario: High-current synchronous rectifier or pass transistor in 12 V to 5 V/3.3 V buck converters for embedded controllers. IC Role / Device Role / Timing Role: Linear regulator or switching element managing output current delivery and transient response. Use Value: VCE(sat) ≤ 1.5 V at 6 A reduces conduction loss below 9 W, improving efficiency over discrete MOSFET alternatives in cost-sensitive designs. |
| Automotive Relay Driver | High-Voltage Power Supply Protection |
|
Use Scenario: Solid-state replacement for electromechanical relays in vehicle lighting and HVAC control modules. IC Role / Device Role / Timing Role: High-side or low-side switch interfacing microcontroller GPIO to 24 V inductive loads. Use Value: AEC-Q101 qualification and 100 V VCEO ensure reliable operation under automotive load-dump transients (up to ±120 V). |
Use Scenario: Overcurrent crowbar or foldback limiter in programmable lab power supplies rated to 100 V output. IC Role / Device Role / Timing Role: Current-sensing and shunt switching element activated by protection comparator during fault conditions. Use Value: SOA curve supports 100 V × 2 A operation for ≥1 ms, enabling controlled shutdown without secondary breakdown. |
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 electrical specs but higher RJA (65 °C/W vs. 50 °C/W for MJB41C on FR-4). | Suitable where manual assembly or socketing is preferred; not suitable for high-density SMT layouts. | Select TIP41C only when board space permits through-hole mounting and thermal budget allows higher ambient rise. |
| MJ15003 | Higher voltage (200 V), higher current (20 A), larger TO-3 package; fT = 4 MHz; RJC = 0.8 °C/W. | Used in high-fidelity audio amplifiers and industrial inverters requiring >100 W dissipation. | Choose MJ15003 only when system demands exceed MJB41C's 100 V/6 A/65 W envelope; not a drop-in replacement. |
Compared with TIP41C, MJB41C offers superior thermal performance in SMT layouts and automotive qualification; compared with MJ15003, it provides lower-cost, smaller-footprint operation within its 100 V/6 A range without overengineering.
Availability
MJB41C is available at Aetrix Electronics and suitable for industrial motor control, automotive relay driving, and DC-DC converter output stages requiring stable component supply and long-term lifecycle support.
Supply support for MJB41C 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 energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The MJB41C belongs to onsemi's complementary silicon power transistor family, engineered for ruggedized switching and amplification in harsh environments where reliability, thermal performance, and AEC-Q101 compliance are essential.
FAQ
What is the maximum junction temperature rating for the MJB41C?
The MJB41C has an operating junction temperature range of −65 °C to +150 °C. This specification ensures reliable operation in demanding environments such as under-hood automotive applications and industrial enclosures with limited airflow. The +150 °C upper limit directly governs thermal design margins when calculating heatsink size and ambient derating curves for the MJB41C.
Is the MJB41C pin-compatible with the TIP41C?
No-the MJB41C uses a D2PAK (4-pin surface-mount) package with pins 1=Base, 2=Collector, 3=Emitter, 4=Collector, whereas the TIP41C uses a TO-220 (3-pin through-hole) package with different pinout and mechanical footprint. Although electrically identical, the MJB41C is not pin-compatible with the TIP41C due to differing package type and terminal configuration.
Does the MJB41C support unclamped inductive switching?
Yes-the MJB41C is characterized for unclamped inductive load energy of 62.5 mJ under specified test conditions (IC = 2.5 A, L = 20 mH, P.R.F. = 10 Hz, VCC = 10 V). This capability makes the MJB41C suitable for driving relays, solenoids, and small motors where flyback energy must be safely absorbed without external snubbers.
What does the "NJVMJB41CT4G" part number indicate for the MJB41C?
NJVMJB41CT4G is the orderable variant of the MJB41C: "NJV" denotes automotive-grade traceability and PPAP-capable manufacturing; "T4G" specifies Pb-free D2PAK packaging in tape-and-reel format (800 units per reel). All electrical and thermal specifications remain identical to the base MJB41C, with added process controls for automotive supply chain compliance.
Can the MJB41C be used in linear amplifier configurations?
Yes-the MJB41C supports linear operation with verified SOA curves up to 100 V and 2 A for pulse widths ≥1 ms, and its hFE stability across IC = 0.3–3.0 A enables predictable biasing in Class-A or Class-AB amplifier stages. However, linear use requires careful thermal management due to its 65 W PD limit at TC = 25 °C, and the MJB41C must be mounted to an adequately sized heatsink to avoid junction overheating.
MJB41C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- 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):
- 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
MJB41C FAQ
1.How can I place an order for MJB41C through Aetrix?
Please submit a Request for Quotation (RFQ) for MJB41C 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 MJB41C reliable?
The price and inventory of MJB41C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJB41C is usually 5 days.
3.What payment methods are accepted for MJB41C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJB41C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJB41C?
MJB41C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJB41C 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 MJB41C?
For technical support, including MJB41C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJB41C requirements.
6.How does Aetrix verify that MJB41C is sourced from the original manufacturer or authorized distributors?
All MJB41C 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 MJB41C meets industry standards.
7.What is the process for return or replacement of MJB41C?
All MJB41C units undergo pre-shipment inspection (PSI). If there is an issue with MJB41C, 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 MJB41C part is unused and in its original packaging.
Return procedure for MJB41C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MJB41C Tags
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MMBT3906-7-F
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