Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi MJD42CRL

Name: MJD42CRL
Brand: onsemi
SKU: MJD42CRL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MJD42CRL

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: MJD42CRL.pdf

Description:: TRANS PNP 100V 6A DPAK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,311

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MJD42CRL from onsemi is a PNP complementary power transistor in DPAK (Case 369C) surface-mount package, rated for 100 V_CEO, 6 A continuous collector current, and 20 W power dissipation at T_C = 25°C. It serves as a low-speed switching and linear amplifier device in automotive and industrial power stages, including relay drivers and voltage regulators.

For engineers reviewing the MJD42CRL datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, DPAK thermal performance (R_JC = 6.25°C/W), AEC-Q101 qualification, and confirmed V_CE(sat) ≤ 1.5 V at I_C = 6 A / I_B = 600 mA - critical for efficient power stage design.

Technical Context

The MJD42CRL operates as a silicon bipolar junction transistor with fixed PNP polarity, designed for operation in the active and saturation regions. Its DC current gain (h_FE) ranges from 15 to 75 at I_C = 3 A and V_CE = 4 V, and its f_T is 3 MHz under specified test conditions (I_C = 500 mA, V_CE = 10 V).

Thermal management relies on surface-mount pad conduction: R_JA = 71.4°C/W (minimum pad size), and R_JC = 6.25°C/W enables direct heatsinking via the collector tab (pins 2 and 4). Safe operating area (SOA) curves define pulse and DC limits up to 150°C junction temperature, with second breakdown constraints governing high-voltage, high-current transients.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 Vdc - maximum collector-emitter blocking voltage before breakdown in open-base configuration
I_C (continuous)	6 Adc - steady-state collector current limit at T_C = 25°C; derates linearly above 25°C
P_D (T_C)	20 W - total power dissipation capability when case temperature is maintained at 25°C
V_CE(sat)	≤1.5 Vdc at I_C = 6 A, I_B = 600 mA - defines conduction loss and heat generation in saturated switching
h_FE	15–75 - DC current gain range across 0.3–3 A collector current, enabling predictable base drive sizing
R_JC	6.25 °C/W - thermal resistance from junction to case, critical for heatsink interface design
AEC-Q101	Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD (HBM Class 3B)

Pinout & Package

DPAK-3 (Case 369C) surface-mount package with exposed collector tab (pins 2 and 4 electrically connected), 6.10 × 6.54 × 2.28 mm footprint, Pb-free (G suffix), UL 94 V-0 compliant epoxy.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal for forward-biased PNP operation; requires negative bias relative to emitter to turn on
2	Collector	Main high-current output terminal; electrically tied to pin 4 and thermal tab for heatsinking
3	Emitter	Common reference terminal; typically connected to higher potential in PNP switch configurations
4	Collector	Second collector connection point; shares same node as pin 2 and thermal pad for low-inductance, high-current routing

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine control modules and body electronics requiring PPAP compliance
DPAK thermal performance	R_JC = 6.25°C/W enables >15 W sustained power handling with minimal external heatsinking
Complementary pairing	Electrically matched with MJD41C (NPN) for push-pull amplifier and H-bridge driver designs
Pb-free & RoHS compliant	Meets global environmental regulations without compromising solderability or long-term reliability
UL 94 V-0 epoxy	Flame-retardant packaging suitable for safety-critical industrial and transportation equipment

Applications

Automotive Relay Drivers	DC Motor Speed Control
Use Scenario: Driving 12 V/24 V electromagnetic relays in vehicle body control units (BCUs) and lighting modules. IC Role / Device Role / Timing Role: PNP power switch controlling relay coil current; operates in saturation with <1.5 V drop at 6 A. Use Value: Enables robust coil energization with low conduction loss and AEC-Q101 reliability for 15+ year automotive service life.	Use Scenario: Low-frequency PWM-based speed regulation of brushed DC motors in HVAC actuators and seat adjusters. IC Role / Device Role / Timing Role: High-side PNP switch in single-ended topology; handles peak currents up to 10 A with safe SOA margins. Use Value: Delivers stable motor torque at 1–5 kHz PWM frequencies while maintaining thermal stability under load transients.
Linear Voltage Regulators	Industrial Power Supplies
Use Scenario: Pass transistor in adjustable 3-terminal linear regulators delivering up to 5 A output current. IC Role / Device Role / Timing Role: Series pass element operating in active region; dissipates excess voltage as heat with h_FE-based feedback control. Use Value: Supports wide input-output differentials (up to 100 V) while maintaining tight output regulation via precise base current control.	Use Scenario: Output stage in programmable bench power supplies and factory automation PSUs requiring ±100 V capability. IC Role / Device Role / Timing Role: Complementary PNP partner to MJD41C in dual-rail output amplifiers and tracking pre-regulators. Use Value: Ensures symmetrical sourcing/sinking performance and thermal tracking between NPN/PNP pairs in precision analog power systems.

Automotive Relay Drivers

DC Motor Speed Control

Use Scenario: Driving 12 V/24 V electromagnetic relays in vehicle body control units (BCUs) and lighting modules.

IC Role / Device Role / Timing Role: PNP power switch controlling relay coil current; operates in saturation with <1.5 V drop at 6 A.

Use Value: Enables robust coil energization with low conduction loss and AEC-Q101 reliability for 15+ year automotive service life.

Use Scenario: Low-frequency PWM-based speed regulation of brushed DC motors in HVAC actuators and seat adjusters.

IC Role / Device Role / Timing Role: High-side PNP switch in single-ended topology; handles peak currents up to 10 A with safe SOA margins.

Use Value: Delivers stable motor torque at 1–5 kHz PWM frequencies while maintaining thermal stability under load transients.

Linear Voltage Regulators

Industrial Power Supplies

Use Scenario: Pass transistor in adjustable 3-terminal linear regulators delivering up to 5 A output current.

IC Role / Device Role / Timing Role: Series pass element operating in active region; dissipates excess voltage as heat with h_FE-based feedback control.

Use Value: Supports wide input-output differentials (up to 100 V) while maintaining tight output regulation via precise base current control.

Use Scenario: Output stage in programmable bench power supplies and factory automation PSUs requiring ±100 V capability.

IC Role / Device Role / Timing Role: Complementary PNP partner to MJD41C in dual-rail output amplifiers and tracking pre-regulators.

Use Value: Ensures symmetrical sourcing/sinking performance and thermal tracking between NPN/PNP pairs in precision analog power systems.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP16PF12	120 V_CEO, 16 A I_C, TO-220 package, MOSFET (not BJT); gate-driven, no base current required	Higher voltage/current rating but requires gate driver IC and lacks inherent current gain; unsuitable for linear regulator pass use	Select only if switching efficiency >95% and gate drive infrastructure exists; not drop-in for MJD42CRL's BJT biasing or linear operation
BD241C	100 V_CEO, 6 A I_C, TO-220 package, non-AEC-Q101, R_JC = 3°C/W (better thermal, but larger footprint)	Same electrical specs but through-hole mounting; lacks automotive qualification and DPAK surface-mount compatibility	Choose for prototyping or legacy through-hole boards; avoid where AEC-Q101 or space-constrained SMT layout is mandatory

Compared with STP16PF12 and BD241C, the MJD42CRL uniquely combines AEC-Q101 qualification, DPAK surface-mount form factor, and BJT characteristics (current gain, linear region usability) - making it irreplaceable in automotive SMT power stages requiring analog control or cost-sensitive base-driven switching.

Availability

MJD42CRL is available at Aetrix Electronics and suitable for automotive relay drivers, industrial linear regulators, and DC motor control circuits requiring stable component supply, AEC-Q101 compliance, and DPAK thermal performance.

Supply support for MJD42CRL 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 is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The MJD42CRL belongs to onsemi's complementary power transistor family, engineered for rugged, high-reliability linear and switching applications in automotive and industrial environments where thermal robustness and qualification rigor are mandatory.

FAQ

What is the pin configuration of the MJD42CRL?

The MJD42CRL uses a DPAK-3 (Case 369C) package with four terminals: Pin 1 is Base, Pins 2 and 4 are electrically connected Collector terminals (including the exposed thermal tab), and Pin 3 is Emitter. This configuration supports high-current conduction and direct heatsinking via the collector tab, as confirmed in the onsemi datasheet mechanical drawings and marking diagrams.

Is the MJD42CRL suitable for automotive applications?

Yes, the MJD42CRL is AEC-Q101 qualified and PPAP capable, with NJV prefix variants (e.g., NJVMJD42CRLG*) explicitly designated for automotive use. It meets requirements for temperature cycling, high-temperature reverse bias, and human-body-model ESD (3B class), making MJD42CRL appropriate for under-hood and body-control module deployments.

What is the maximum continuous collector current for the MJD42CRL?

The MJD42CRL supports 6 A continuous collector current (I_C) at case temperature T_C = 25°C. Above 25°C, it derates at 0.16 W/°C for power dissipation, and the safe operating area (SOA) curve in the datasheet defines pulsed current limits - e.g., 10 A peak (I_CM) with duty cycle and pulse width constraints.

How does the MJD42CRL compare to the MJD41C?

The MJD42CRL is the PNP complement to the NPN MJD41C, sharing identical voltage ratings (100 V_CEO), current capability (6 A), package (DPAK), and thermal specs (R_JC = 6.25°C/W). They are electrically matched for push-pull, complementary symmetry, and H-bridge designs - a key feature highlighted in the onsemi datasheet's "Complementary Power Transistors" title and SOA plots.

Does the MJD42CRL require a heatsink in typical operation?

At full 6 A continuous current and 20 W dissipation, the MJD42CRL requires effective heatsinking due to its R_JC = 6.25°C/W and R_JA = 71.4°C/W (minimum pad). PCB copper area alone is insufficient; a heatsink attached to the exposed collector tab (pins 2/4) is necessary to maintain T_J ≤ 150°C - per the thermal derating curve and SOA limits in the official onsemi datasheet.

MJD42CRL 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:: -65°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

MJD42CRL FAQ

1.How can I place an order for MJD42CRL through Aetrix?

Please submit a Request for Quotation (RFQ) for MJD42CRL 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 MJD42CRL reliable?

The price and inventory of MJD42CRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJD42CRL is usually 5 days.

3.What payment methods are accepted for MJD42CRL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJD42CRL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MJD42CRL?

MJD42CRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MJD42CRL 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 MJD42CRL?

For technical support, including MJD42CRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJD42CRL requirements.

6.How does Aetrix verify that MJD42CRL is sourced from the original manufacturer or authorized distributors?

All MJD42CRL 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 MJD42CRL meets industry standards.

7.What is the process for return or replacement of MJD42CRL?

All MJD42CRL units undergo pre-shipment inspection (PSI). If there is an issue with MJD42CRL, 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 MJD42CRL part is unused and in its original packaging.

Return procedure for MJD42CRL:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…