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

onsemi MPS6725RLRP

Name: MPS6725RLRP
Brand: onsemi
SKU: MPS6725RLRP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPS6725RLRP

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 Long Body, Formed Leads

Datasheet:: MPS6725RLRP.pdf

Description:: TRANS NPN DARL 50V 1A TO92

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Product details

Overview

MPS6725RLRP from onsemi is an NPN silicon Darlington transistor in TO-92 package, rated for 50 V_CEO, 1 A continuous collector current, and 1.0 W dissipation at T_A = 25°C. It delivers high DC current gain (h_FE = 4,000–40,000 at I_C = 1 A), low V_CE(sat) ≤ 1.5 V, and operates across −55°C to +150°C junction temperature - used in relay drivers, lamp dimmers, and low-frequency switching power stages.

For engineers reviewing the MPS6725RLRP datasheet, pinout, applications, or equivalent options, key selection criteria include its Darlington configuration for high-current gain, TO-92 mechanical compatibility, thermal derating behavior (8 mW/°C above 25°C), and safe operating area limits defined by second breakdown and thermal constraints.

Technical Context

The MPS6725RLRP implements a monolithic NPN Darlington pair with integrated base-emitter shunt resistor absent - requiring external base drive control. Its high h_FE enables microampere-level base current to switch 1 A loads, while V_BE(on) ≤ 2.0 V at I_C = 1 A confirms low-turn-on voltage demand. The device exhibits f_T = 100–1000 MHz, indicating usable small-signal amplification up to VHF range despite primary use in switching.

Thermal design relies on R_JA = 125°C/W (ambient) and R_JC = 50°C/W (case), with PD limited to 1.0 W at 25°C ambient and derated linearly at 8 mW/°C. Safe operating area (SOA) curves define maximum pulse current vs. voltage under 10% duty cycle, bounded by thermal limit, current limit, and second breakdown region.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum collector-emitter voltage before breakdown; defines upper rail limit in switching applications.
I_C (continuous)	1000 mA - Sustained load current capability; supports driving relays, solenoids, or LED arrays directly.
h_FE	4,000–40,000 - High DC current gain at I_C = 1 A, V_CE = 5 V; reduces required base drive current significantly.
V_CE(sat)	≤ 1.5 V - Low saturation voltage at I_C/I_B = 1000; minimizes conduction loss and heat generation in on-state.
R_JA	125 °C/W - Junction-to-ambient thermal resistance; determines temperature rise under natural convection cooling.
f_T	100–1000 MHz - Current-gain bandwidth product; indicates usable frequency range for small-signal amplification.
T_J range	−55°C to +150°C - Operating junction temperature span; supports industrial and automotive under-hood environments.

Pinout & Package

Package: TO-92 (Case 29-10, Style 1), through-hole, Pb-free, 2000 units per ammo box. Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector - confirmed per marking diagram and mechanical outline on page 3 of ON Semiconductor datasheet MPS6724/D Rev. 4.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current return path; connects to ground or low-side reference; must handle full load current.
2	Base	Control input; requires current-limited drive (typically via series resistor) to bias Darlington pair into saturation.
3	Collector	High-side output node; connects to load supply rail; carries full switched current with minimal V_CE(sat).

Key Features

Feature	Design Value
Darlington architecture	Monolithic NPN pair delivering >4 k h_FE at 1 A - enables direct microcontroller GPIO drive without external pre-driver.
Low V_CE(sat)	≤1.5 V at I_C = 1 A, I_B = 2 mA - reduces power loss to <1.5 W and eases thermal management in compact layouts.
Wide T_J range	−55°C to +150°C - supports operation in uncontrolled environments including motor control enclosures and outdoor lighting fixtures.
TO-92 mechanical standardization	Compatible with legacy PCB footprints and automated insertion equipment; straight or bent lead options available.
Pb-free compliance	RoHS-compliant construction (MPS6725RLRP suffix 'G' optional); meets global environmental manufacturing requirements.

Applications

Relay Driver Circuits	Lamp Dimming & Control
Use Scenario: Driving 12 V/24 V electromagnetic relays in PLC I/O modules and HVAC controllers. IC Role / Device Role / Timing Role: High-gain switch enabling TTL/CMOS logic-level signals to energize relay coils drawing up to 1 A. Use Value: Eliminates need for discrete pre-driver stage; simplifies BOM and layout while maintaining fast turn-on/turn-off response.	Use Scenario: Phase-angle or PWM-based dimming of incandescent and halogen lamps in residential and commercial lighting. IC Role / Device Role / Timing Role: Main switching element in TRIAC gate driver or low-side lamp current path. Use Value: High h_FE ensures stable conduction at low firing angles; low V_CE(sat) minimizes heat buildup during extended dimming cycles.
DC Motor Speed Control	Power Supply Sequencing
Use Scenario: Low-frequency PWM switching for brushed DC motors in appliances and industrial actuators (≤10 kHz). IC Role / Device Role / Timing Role: Low-side switch controlling motor current flow; handles stall currents up to 1 A continuously. Use Value: SOA-defined thermal and second-breakdown limits ensure reliability under motor startup surges and locked-rotor conditions.	Use Scenario: Enabling/disabling auxiliary rails (e.g., 5 V standby → 3.3 V main) in multi-rail embedded power systems. IC Role / Device Role / Timing Role: Controlled power switch inserted between regulator output and downstream circuitry. Use Value: Precise V_BE(on) ≤ 2.0 V allows clean enable threshold detection; TO-92 footprint fits tight space constraints near regulators.

Relay Driver Circuits

Lamp Dimming & Control

Use Scenario: Driving 12 V/24 V electromagnetic relays in PLC I/O modules and HVAC controllers.

IC Role / Device Role / Timing Role: High-gain switch enabling TTL/CMOS logic-level signals to energize relay coils drawing up to 1 A.

Use Value: Eliminates need for discrete pre-driver stage; simplifies BOM and layout while maintaining fast turn-on/turn-off response.

Use Scenario: Phase-angle or PWM-based dimming of incandescent and halogen lamps in residential and commercial lighting.

IC Role / Device Role / Timing Role: Main switching element in TRIAC gate driver or low-side lamp current path.

Use Value: High h_FE ensures stable conduction at low firing angles; low V_CE(sat) minimizes heat buildup during extended dimming cycles.

DC Motor Speed Control

Power Supply Sequencing

Use Scenario: Low-frequency PWM switching for brushed DC motors in appliances and industrial actuators (≤10 kHz).

IC Role / Device Role / Timing Role: Low-side switch controlling motor current flow; handles stall currents up to 1 A continuously.

Use Value: SOA-defined thermal and second-breakdown limits ensure reliability under motor startup surges and locked-rotor conditions.

Use Scenario: Enabling/disabling auxiliary rails (e.g., 5 V standby → 3.3 V main) in multi-rail embedded power systems.

IC Role / Device Role / Timing Role: Controlled power switch inserted between regulator output and downstream circuitry.

Use Value: Precise V_BE(on) ≤ 2.0 V allows clean enable threshold detection; TO-92 footprint fits tight space constraints near regulators.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPS6725RLRAG	Pb-free version of same die and package; identical electrical specs; marked with 'G' suffix and microdot.	No functional difference; selected when RoHS compliance is mandatory and no exemption applies.	Choose MPS6725RLRAG if full Pb-free certification documentation (e.g., IPC-1752) is required for final assembly.
ULN2003A	7-channel Darlington array in SO-16; 500 mA per channel; integrated base resistors and clamp diodes; logic-compatible inputs.	Used in multi-load digital interfacing (e.g., stepper drivers, LED matrices); not single-device drop-in replacement.	Select ULN2003A only when driving ≥2 independent loads with common logic interface and built-in protection.

Compared with MPS6725RLRP, MPS6725RLRAG offers identical performance with certified Pb-free materials, while ULN2003A trades single-device simplicity for multi-channel integration and internal protection - making it suitable for digital-output expansion but not for high-current single-load switching where board space and cost per channel matter.

Availability

MPS6725RLRP is available at Aetrix Electronics and suitable for relay driver circuits, lamp dimming systems, and DC motor speed control applications requiring stable component supply, long-term manufacturability, and consistent TO-92 mechanical fit.

Supply support for MPS6725RLRP 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 MPS6724/MPS6725 family was designed as general-purpose, high-gain Darlington transistors for cost-sensitive, medium-power linear and switching applications - emphasizing robustness, wide temperature operation, and TO-92 compatibility.

FAQ

What is the maximum continuous collector current rating for MPS6725RLRP?

The MPS6725RLRP is rated for 1000 mA (1 A) continuous collector current at T_A = 25°C. Derating applies above 25°C at 8 mW/°C for total device dissipation. Pulse current capability exceeds 1 A depending on duty cycle and thermal management - consult Figure 1 (Safe Operating Area) in the datasheet for time-voltage-current limits.

Does MPS6725RLRP have an integrated base-emitter resistor?

No, the MPS6725RLRP does not include an integrated base-emitter shunt resistor. It is a bare Darlington transistor requiring external base current limiting - typically via a series resistor driven by a microcontroller GPIO or logic buffer. This differs from "digital transistor" variants like the NSV11203MR6T1G.

What is the collector-emitter saturation voltage (V_CE(sat)) specification for MPS6725RLRP?

The MPS6725RLRP has a maximum V_CE(sat) of 1.5 V when operated at I_C = 1000 mA and I_B = 2.0 mA. This value is measured under DC conditions at T_A = 25°C and reflects the on-state conduction loss critical for thermal design in switching applications.

Is MPS6725RLRP pin-compatible with MPS6724RLRA?

Yes, MPS6725RLRP and MPS6724RLRA share identical TO-92 (Style 1) pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. However, they differ electrically - MPS6725RLRP has higher V_CEO (50 V vs. 40 V) and V_CBO (60 V vs. 50 V), making it suitable for higher-voltage rails where MPS6724RLRA would be at risk of breakdown.

What packaging format does MPS6725RLRP ship in?

MPS6725RLRP ships in ammo box packaging: 2000 units per box. This format supports manual and semi-automated placement in low-to-medium volume production. Tape-and-reel (MPS6725RLRP's sibling MPS6724RLRA uses tape-and-reel) is not used for this variant - confirmed in the Ordering Information table on page 4 of the MPS6724/D datasheet.

MPS6725RLRP Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 Long Body, Formed Leads

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Transistor Type:: NPN - Darlington

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 1.5V @ 2mA, 1A

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 4000 @ 1A, 5V

Power - Max:: 1 W

Frequency - Transition:: 1GHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92 (TO-226)

MPS6725RLRP FAQ

1.How can I place an order for MPS6725RLRP through Aetrix?

Please submit a Request for Quotation (RFQ) for MPS6725RLRP 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 MPS6725RLRP reliable?

The price and inventory of MPS6725RLRP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPS6725RLRP is usually 5 days.

3.What payment methods are accepted for MPS6725RLRP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPS6725RLRP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPS6725RLRP?

MPS6725RLRP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPS6725RLRP 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 MPS6725RLRP?

For technical support, including MPS6725RLRP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPS6725RLRP requirements.

6.How does Aetrix verify that MPS6725RLRP is sourced from the original manufacturer or authorized distributors?

All MPS6725RLRP 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 MPS6725RLRP meets industry standards.

7.What is the process for return or replacement of MPS6725RLRP?

All MPS6725RLRP units undergo pre-shipment inspection (PSI). If there is an issue with MPS6725RLRP, 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 MPS6725RLRP part is unused and in its original packaging.

Return procedure for MPS6725RLRP:

1.Submit a request within 90 days.

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

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