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

onsemi MJE700G

Name: MJE700G
Brand: onsemi
SKU: MJE700G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MJE700G

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-225AA, TO-126-3

Datasheet:: MJE700G.pdf

Description:: TRANS PNP DARL 60V 4A TO-126

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MJE700G from onsemi is a PNP silicon Darlington power transistor in TO-225 package, rated for 60 V_CEO, 4.0 A collector current, and 40 W power dissipation at T_C = 25°C, with typical DC current gain (h_FE) of 2000 at I_C = 2.0 A - designed for low-speed switching and linear amplifier applications in industrial power control circuits.

For engineers reviewing the MJE700G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical ratings, thermal behavior, package mapping, complementary device context, and real-world selection guidance for high-current, medium-voltage discrete power stages.

Technical Context

The MJE700G implements a monolithic PNP Darlington pair with built-in base-emitter resistors to suppress leakage multiplication, enabling stable high-gain operation without external bias stabilization. Its safe operating area (SOA) is thermally limited at low pulse widths and second-breakdown constrained at longer durations, with junction-to-case thermal resistance of 3.12°C/W.

It operates across –55°C to +150°C junction temperature range and supports DC and pulsed switching up to 4.0 A, with V_CE(sat) ≤ 3.0 V at I_C = 4.0 A / I_B = 40 mA and V_BE(on) ≤ 3.0 V under same conditions - optimized for robustness in non-high-frequency power control.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	60 Vdc - maximum collector-emitter voltage before breakdown under open-base condition; defines upper rail limit in PNP switch or amplifier stage.
I_C	4.0 Adc - continuous collector current rating; sets hard limit for sustained load drive capability in relay drivers or motor controls.
P_D @ T_C = 25°C	40 W - total power dissipation at case temperature 25°C; requires heatsinking for >10 W operation in real systems.
h_FE (typ)	2000 @ I_C = 2.0 A - high DC current gain reduces required base drive current, easing interface with microcontrollers or logic-level drivers.
R_JC	3.12 °C/W - junction-to-case thermal resistance; enables accurate junction temperature estimation when mounted on heatsink with known R_CA.
V_CE(sat)	≤3.0 V @ I_C/I_B = 250 - saturation voltage determines conduction loss and heat generation in switching applications.

Pinout & Package

Package: TO-225 (Case 77-09, Style 1), plastic through-hole package with metal tab connected to collector (pins 2 and 4). Mounting tab is electrically active and must be isolated unless used as heatsink return path.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Emitter	Main current exit terminal for PNP device; connects to load return or ground-side reference in high-side switch configuration.
Pins 2 & 4	Collector	Common collector terminals tied internally; tab-connected for thermal and electrical integration - requires insulation if mounted to grounded heatsink.
Pin 3	Base	Control input for Darlington pair; high input impedance due to internal resistor network reduces drive burden but limits switching speed.

Key Features

Feature	Design Value
Monolithic Darlington construction	Integrates driver and output transistors on single die with matched thermal tracking and guaranteed minimum h_FE of 100 at 4.0 A.
Built-in base-emitter resistors	Suppresses leakage-induced secondary breakdown and eliminates need for external base shunt resistors in standby state.
Pb-Free and RoHS-compliant packaging	TO-225 package marked with "G" suffix meets EU RoHS Directive 2011/65/EU and supports lead-free reflow and wave soldering processes.
Wide operating temperature range	–55°C to +150°C junction range enables deployment in industrial motor drives, automotive under-hood modules, and outdoor power equipment.

Applications

Industrial Relay Driver	DC Motor Speed Control
Use Scenario: Driving 24 VDC industrial relays with coil currents up to 3.5 A in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: High-gain PNP Darlington switch providing galvanically isolated load switching with minimal base drive current from 3.3 V or 5 V logic. Use Value: Enables direct microcontroller interfacing without level-shifting or additional driver stages, reducing BOM count and board space.	Use Scenario: Linear speed regulation of small brushed DC motors (e.g., 12–24 V, <50 W) in HVAC actuators and automated valves. IC Role / Device Role / Timing Role: Power pass element in emitter-follower configuration, dissipating variable power based on analog control voltage. Use Value: Delivers smooth, low-noise speed control without PWM-related EMI, leveraging high h_FE to minimize base drive losses.
High-Side Power Switch	Linear Audio Amplifier Stage
Use Scenario: Controlling +12 V or +24 V supply rails to subsystems (e.g., sensors, displays) in battery-powered test equipment. IC Role / Device Role / Timing Role: PNP high-side switch with integrated base resistor network ensuring reliable turn-off during sleep mode. Use Value: Prevents leakage-induced load activation during system standby, improving power budget accuracy and safety compliance.	Use Scenario: Output stage in Class-A or AB audio amplifiers delivering up to 5 W into 8 Ω loads for intercom and public address systems. IC Role / Device Role / Timing Role: Complementary PNP output transistor paired with NPN MJE800G in push-pull configuration. Use Value: Provides symmetrical current sourcing/sinking capability and low distortion due to matched SOA and thermal response with MJE800G.

Industrial Relay Driver

DC Motor Speed Control

Use Scenario: Driving 24 VDC industrial relays with coil currents up to 3.5 A in programmable logic controller (PLC) output modules.

IC Role / Device Role / Timing Role: High-gain PNP Darlington switch providing galvanically isolated load switching with minimal base drive current from 3.3 V or 5 V logic.

Use Value: Enables direct microcontroller interfacing without level-shifting or additional driver stages, reducing BOM count and board space.

Use Scenario: Linear speed regulation of small brushed DC motors (e.g., 12–24 V, <50 W) in HVAC actuators and automated valves.

IC Role / Device Role / Timing Role: Power pass element in emitter-follower configuration, dissipating variable power based on analog control voltage.

Use Value: Delivers smooth, low-noise speed control without PWM-related EMI, leveraging high h_FE to minimize base drive losses.

High-Side Power Switch

Linear Audio Amplifier Stage

Use Scenario: Controlling +12 V or +24 V supply rails to subsystems (e.g., sensors, displays) in battery-powered test equipment.

IC Role / Device Role / Timing Role: PNP high-side switch with integrated base resistor network ensuring reliable turn-off during sleep mode.

Use Value: Prevents leakage-induced load activation during system standby, improving power budget accuracy and safety compliance.

Use Scenario: Output stage in Class-A or AB audio amplifiers delivering up to 5 W into 8 Ω loads for intercom and public address systems.

IC Role / Device Role / Timing Role: Complementary PNP output transistor paired with NPN MJE800G in push-pull configuration.

Use Value: Provides symmetrical current sourcing/sinking capability and low distortion due to matched SOA and thermal response with MJE800G.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TIP42CG	Same TO-225 package, 100 V_CEO, 6 A I_C, lower h_FE (min 15) - not Darlington; higher V_CE(sat) (~1.5 V).	Higher voltage margin but less gain; requires stronger base drive; unsuitable where low base current is critical.	Select TIP42CG only when higher V_CEO is mandatory and base drive capability exceeds 100 mA.
MJE702G	Same family, 80 V_CEO, identical package/pinout, same h_FE profile - differs only in breakdown voltage rating.	Direct drop-in replacement where 80 V rail tolerance is needed; no layout or drive changes required.	Choose MJE702G when system voltage transients exceed 60 V but thermal and gain requirements match MJE700G exactly.

Compared with TIP42CG, MJE700G delivers 20× higher DC gain and lower base drive burden at cost of 20 V lower breakdown; versus MJE702G, it trades 20 V headroom for tighter voltage margin in space-constrained 60 V systems.

Availability

MJE700G is available at Aetrix Electronics and suitable for industrial relay drivers, DC motor speed controllers, high-side power switches, and linear audio amplifier stages requiring stable component supply and long-lifecycle support.

Supply support for MJE700G 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, cloud, and consumer markets.

The MJE700G belongs to onsemi's legacy silicon power transistor product line, engineered for reliability in general-purpose amplifier and low-speed switching applications where high DC gain and thermal robustness are prioritized over RF performance.

FAQ

What is the maximum continuous collector current rating for MJE700G?

The MJE700G is rated for 4.0 Adc continuous collector current at case temperature T_C = 25°C. Derating is required above 25°C at 0.32 W/°C, and actual usable current depends on heatsinking and ambient conditions. At T_C = 100°C, maximum continuous I_C drops to approximately 16 W / (100 − 25) × 0.32 ≈ 1.6 A - always verify against SOA curves in Figure 5 of the official datasheet.

Is MJE700G pin-compatible with MJE800G?

No - MJE700G is a PNP Darlington transistor while MJE800G is its NPN complement; they share identical TO-225 package and pinout (Emitter/Base/Collector layout), but polarity reversal means they cannot substitute directly in circuit without redesigning biasing and signal paths. Their pin mapping is mirrored for complementary push-pull use, not interchangeability.

Does MJE700G require an external base resistor?

No - the MJE700G integrates monolithic base-emitter resistors to limit leakage multiplication and ensure stable turn-off behavior. External base resistors are unnecessary for basic switching; however, a series base resistor may still be used to fine-tune switching speed or limit peak base current during fast transitions.

What is the thermal resistance from junction to case for MJE700G?

The MJE700G has a maximum junction-to-case thermal resistance (R_JC) of 3.12°C/W, measured from die junction to the metal tab (collector). This value enables precise junction temperature calculation when combined with heatsink thermal resistance and ambient conditions - critical for reliability validation in continuous-power applications.

Can MJE700G be used in audio amplifier output stages?

Yes - the MJE700G is specified for linear amplifier applications and commonly deployed in Class-A or AB audio output stages up to ~5 W into 8 Ω, especially when paired with its NPN counterpart MJE800G. Its high h_FE and SOA stability support low-distortion operation, though thermal design must accommodate dissipation at quiescent bias points.

MJE700G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-225AA, TO-126-3

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: PNP - Darlington

Current - Collector (Ic) (Max):: 4 A

Voltage - Collector Emitter Breakdown (Max):: 60 V

Vce Saturation (Max) @ Ib, Ic:: 2.5V @ 30mA, 1.5A

Current - Collector Cutoff (Max):: 100µA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 750 @ 1.5A, 3V

Power - Max:: 40 W

Frequency - Transition:: -

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-126

MJE700G FAQ

1.How can I place an order for MJE700G through Aetrix?

Please submit a Request for Quotation (RFQ) for MJE700G 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 MJE700G reliable?

The price and inventory of MJE700G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJE700G is usually 5 days.

3.What payment methods are accepted for MJE700G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJE700G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MJE700G?

MJE700G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MJE700G 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 MJE700G?

For technical support, including MJE700G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJE700G requirements.

6.How does Aetrix verify that MJE700G is sourced from the original manufacturer or authorized distributors?

All MJE700G 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 MJE700G meets industry standards.

7.What is the process for return or replacement of MJE700G?

All MJE700G units undergo pre-shipment inspection (PSI). If there is an issue with MJE700G, 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 MJE700G part is unused and in its original packaging.

Return procedure for MJE700G:

1.Submit a request within 90 days.

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

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