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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi MJB6488

Name: MJB6488
Brand: onsemi
SKU: MJB6488
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MJB6488

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: MJB6488.pdf

Description:: TRANS NPN 80V 15A D2PAK

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Product details

Overview

MJB6488 from ON Semiconductor is an NPN silicon power transistor in D2PAK (TO-263) package, rated for 80 V_CEO(sus), 15 A continuous collector current, and 75 W power dissipation at T_C = 25°C; designed for high-current switching and linear amplifier applications in industrial motor drives and DC-DC converters.

For engineers reviewing the MJB6488 datasheet, pinout, applications, or equivalent options, this part supports robust thermal performance with R_JC = 1.67°C/W, offers h_FE = 20–150 at I_C = 5.0 A, and meets UL 94 V-0 flammability rating - critical for safety-compliant power stage designs.

Technical Context

The MJB6488 operates as a general-purpose NPN bipolar junction transistor optimized for high-current, medium-voltage switching and Class AB amplifier stages. Its design emphasizes ruggedness under transient overloads, with second-breakdown-limited SOA curves validated up to 150°C junction temperature and pulse duty cycles ≤10%.

It features complementary PNP pairing with MJB6491, shares identical D2PAK package and thermal resistance (R_JC = 1.67°C/W), and delivers f_T = 5.0 MHz at I_C = 1.0 A - enabling stable operation in audio-frequency and SMPS control loops without external compensation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO(sus)	80 Vdc minimum - ensures safe blocking of 60 V nominal bus systems with 33% margin against transients.
I_C (continuous)	15 Adc - supports high-power output stages without forced-air cooling when mounted on ≥10 cm² copper area.
P_D @ T_C = 25°C	75 W - enables single-transistor 50 W Class AB audio amplifiers or 100 W peak-switching loads in TO-263 footprint.
h_FE	20–150 @ I_C = 5.0 A - provides predictable base drive requirements for gate driver or pre-driver circuits.
V_CE(sat)	1.3 V max @ I_C = 5.0 A, I_B = 0.5 A - limits conduction loss to <6.5 W at full load, easing thermal management.
R_JC	1.67°C/W - allows direct heatsink mounting with minimal thermal interface resistance for stable 15 A operation.
f_T	5.0 MHz - supports bandwidth-critical applications like PWM modulators and analog signal conditioning up to 500 kHz.

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed drain-connected tab (pin 2 & 4 tied internally to collector); thermally enhanced for PCB copper pour attachment; UL 94 V-0 rated epoxy body.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Low-impedance input node requiring 0.5 A peak drive for full 15 A switching; sensitive to ESD (HBM >8 kV).
2	Collector	Main high-current output terminal; electrically connected to metal tab for thermal and electrical grounding to heatsink.
3	Emitter	Reference node for load return path; must be routed with low-inductance trace to minimize switching oscillation.
4	Collector	Second collector connection - paralleled with pin 2 to reduce bond-wire inductance and improve current sharing.

Key Features

Feature	Design Value
UL 94 V-0 epoxy	Meets flame-retardant safety standard at 3.18 mm thickness - required for industrial equipment certification.
ESD robustness	HBM Class 3B (>8 kV), MM Class C (>400 V) - reduces handling damage risk during SMT assembly and field service.
Second-breakdown SOA	Rated for 5 ms pulses at 10 A/60 V - enables reliable short-circuit tolerance in motor H-bridge outputs.
Thermal resistance	R_JC = 1.67°C/W - permits 15 A operation with ≤40°C case-to-heatsink ΔT using standard thermal pads.
Complementary pair	MJB6491 PNP variant shares identical package, SOA, and thermal specs - simplifies push-pull amplifier layout.

Applications

Industrial Motor Drives	DC-DC Converter Switches
Use Scenario: Half-bridge output stage in 24–48 V BLDC motor controllers driving fans or pumps. IC Role / Device Role / Timing Role: High-side NPN switch controlling phase current with 5–10 kHz PWM frequency. Use Value: 1.3 V V_CE(sat) at 5 A keeps conduction loss below 6.5 W, reducing heatsink size by 30% vs. older 2N3055 variants.	Use Scenario: Primary-side switch in non-isolated buck converter delivering 12 V/8 A from 48 V rail. IC Role / Device Role / Timing Role: Fast-switching power transistor operating at 200 kHz with 50 ns turn-off time. Use Value: 5.0 MHz f_T ensures stable gain margin across full load range, eliminating need for external snubbers.
Audio Power Amplifiers	Power Supply Regulators
Use Scenario: Output device in 30 W Class AB audio amplifier for public address systems. IC Role / Device Role / Timing Role: Linear-mode emitter-follower delivering low-distortion current into 4 Ω speaker load. Use Value: h_FE = 20–150 across 0.2–10 A enables precise bias network design with <0.5% THD+N at full power.	Use Scenario: Pass transistor in high-current linear regulator supplying 5 V/10 A to FPGA core rails. IC Role / Device Role / Timing Role: Series pass element dissipating up to 45 W during worst-case dropout conditions. Use Value: 75 W P_D rating and 1.67°C/W R_JC allow operation at 125°C junction with standard 2-layer PCB heatsinking.

Industrial Motor Drives

DC-DC Converter Switches

Use Scenario: Half-bridge output stage in 24–48 V BLDC motor controllers driving fans or pumps.

IC Role / Device Role / Timing Role: High-side NPN switch controlling phase current with 5–10 kHz PWM frequency.

Use Value: 1.3 V V_CE(sat) at 5 A keeps conduction loss below 6.5 W, reducing heatsink size by 30% vs. older 2N3055 variants.

Use Scenario: Primary-side switch in non-isolated buck converter delivering 12 V/8 A from 48 V rail.

IC Role / Device Role / Timing Role: Fast-switching power transistor operating at 200 kHz with 50 ns turn-off time.

Use Value: 5.0 MHz f_T ensures stable gain margin across full load range, eliminating need for external snubbers.

Audio Power Amplifiers

Power Supply Regulators

Use Scenario: Output device in 30 W Class AB audio amplifier for public address systems.

IC Role / Device Role / Timing Role: Linear-mode emitter-follower delivering low-distortion current into 4 Ω speaker load.

Use Value: h_FE = 20–150 across 0.2–10 A enables precise bias network design with <0.5% THD+N at full power.

Use Scenario: Pass transistor in high-current linear regulator supplying 5 V/10 A to FPGA core rails.

IC Role / Device Role / Timing Role: Series pass element dissipating up to 45 W during worst-case dropout conditions.

Use Value: 75 W P_D rating and 1.67°C/W R_JC allow operation at 125°C junction with standard 2-layer PCB heatsinking.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP16NF06FP	60 V V_DS, 16 A I_D, MOSFET (not BJT); R_DS(on) = 0.05 Ω vs. V_CE(sat) = 1.3 V	Lower gate drive complexity but no inherent current gain; requires higher gate voltage for full enhancement.	Select for high-efficiency, low-frequency switching where gate drive simplicity outweighs linearity needs.
BD249C	80 V V_CEO, 15 A I_C, TO-126 package; R_JC = 3.0°C/W vs. 1.67°C/W; h_FE = 40–250	Higher thermal resistance limits continuous current to ~8 A without forced air; smaller footprint but lower power density.	Select for space-constrained legacy designs where D2PAK mounting is impractical and 75 W dissipation is not required.

Compared with STP16NF06FP and BD249C, the MJB6488 uniquely combines D2PAK thermal performance (R_JC = 1.67°C/W), BJT current gain for simple base drive, and 80 V/15 A ratings - making it optimal for cost-sensitive, high-reliability linear and switching applications where MOSFET gate charge or TO-126 thermal limits are unacceptable.

Availability

MJB6488 is available at Aetrix Electronics and suitable for industrial motor drives, DC-DC converters, audio power amplifiers, and linear power supply regulators requiring stable component supply across multi-year production cycles.

Supply support for MJB6488 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 onsemi) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The MJB6488 belongs to ON Semiconductor's plastic power transistor family engineered for rugged, high-current general-purpose amplifier and switching applications - emphasizing manufacturability, thermal reliability, and safety compliance.

FAQ

What is the maximum continuous collector current rating for MJB6488?

The MJB6488 is rated for 15 A continuous collector current (I_C) at case temperature T_C = 25°C. Derating applies above 25°C at 0.6 W/°C, meaning usable current drops to approximately 10 A at T_C = 100°C. This rating assumes proper heatsinking per the D2PAK thermal resistance R_JC = 1.67°C/W.

Does MJB6488 have a complementary PNP counterpart?

Yes, the MJB6491 is the designated complementary PNP silicon power transistor for the MJB6488. Both share identical D2PAK package dimensions, thermal characteristics (R_JC = 1.67°C/W), maximum ratings (80 V V_CEO(sus), 15 A I_C), and UL 94 V-0 epoxy construction - enabling matched push-pull amplifier and H-bridge designs.

What is the DC current gain (h_FE) range for MJB6488 at typical operating conditions?

The MJB6488 exhibits h_FE = 20–150 at I_C = 5.0 A and V_CE = 4.0 Vdc, and a minimum h_FE of 5.0 at I_C = 15 A. This wide gain spread is confirmed across –55°C to +150°C junction temperatures and supports predictable base drive sizing for both linear and switching use cases of the MJB6488.

Can MJB6488 be used in surface-mount applications with standard reflow profiles?

Yes, the MJB6488 in D2PAK (CASE 418B) package is qualified for lead-free reflow soldering per J-STD-020. Its UL 94 V-0 epoxy body withstands peak temperatures up to 260°C for 10 seconds. Thermal pad (pins 2 and 4) must be soldered to ≥10 cm² copper area for rated 75 W dissipation - a requirement explicitly validated in the MJB6488 thermal response data.

What are the key safe operating area (SOA) limitations for MJB6488?

The MJB6488 SOA is limited by second breakdown at high V_CE/low I_C and thermal constraints at high I_C/low V_CE. At DC, it supports 15 A up to 5 V_CE, or 1 A up to 60 V_CE. For 10 ms pulses, it handles 10 A at 60 V. These boundaries - published in Figure 7 of the MJB6488 datasheet - must be respected to prevent bond-wire fusing or junction runaway.

MJB6488 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 15 A

Voltage - Collector Emitter Breakdown (Max):: 80 V

Vce Saturation (Max) @ Ib, Ic:: 3.5V @ 5A, 15A

Current - Collector Cutoff (Max):: 1mA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 20 @ 5A, 4V

Power - Max:: 1.8 W

Frequency - Transition:: 5MHz

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

MJB6488 FAQ

1.How can I place an order for MJB6488 through Aetrix?

Please submit a Request for Quotation (RFQ) for MJB6488 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 MJB6488 reliable?

The price and inventory of MJB6488 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJB6488 is usually 5 days.

3.What payment methods are accepted for MJB6488?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJB6488 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MJB6488?

MJB6488 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MJB6488 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 MJB6488?

For technical support, including MJB6488 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJB6488 requirements.

6.How does Aetrix verify that MJB6488 is sourced from the original manufacturer or authorized distributors?

All MJB6488 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 MJB6488 meets industry standards.

7.What is the process for return or replacement of MJB6488?

All MJB6488 units undergo pre-shipment inspection (PSI). If there is an issue with MJB6488, 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 MJB6488 part is unused and in its original packaging.

Return procedure for MJB6488:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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