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onsemi MPS6725
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- Part No.:
- MPS6725
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body
- Datasheet:
-
MPS6725.pdf
- Description:
- TRANS NPN DARL 50V 1A TO92
- Quantity:
- Payment:
- Shipping:
Inventory:8,182
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Product details
Overview
MPS6725 from onsemi is an NPN silicon Darlington transistor in TO-92 package, rated for 50 VCEO, 1 A continuous collector current, and 1.0 W dissipation at TA = 25°C. It delivers high DC current gain (hFE = 4,000–40,000 at IC = 1 A), low VCE(sat) ≤ 1.5 V, and operates across −55°C to +150°C - used in relay drivers, lamp dimmers, and low-frequency switching power stages.
For engineers reviewing the MPS6725 datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (SOA) limits, thermal resistance (RJA = 125°C/W), VBE(on) ≤ 2.0 V, fT up to 1000 MHz, and Pb-free TO-92 packaging compliance.
Technical Context
The MPS6725 is a monolithic NPN Darlington pair with integrated base-emitter resistor network absent - requiring external base drive control. Its high hFE enables direct microcontroller GPIO interfacing without additional amplification, while its SOA curve defines thermal and second-breakdown boundaries under pulsed loads.
Designed for linear and switching operation below 100 MHz, it exhibits Ccb ≤ 10 pF at 10 V and maintains stable gain across −55°C to +125°C junction temperature. V(BR)CBO = 60 V and V(BR)EBO = 12 V support robust off-state blocking in inductive load circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 Vdc - maximum collector-emitter voltage before breakdown; sets upper limit for supply rail compatibility in relay or solenoid drivers. |
| IC (continuous) | 1000 mAdc - continuous collector current rating; supports 1 A load switching without forced cooling in ambient ≤ 25°C. |
| PD @ TA = 25°C | 1.0 W - total device dissipation at room ambient; derates 8 mW/°C above 25°C, defining usable power envelope on PCB. |
| hFE | 4,000–40,000 - DC current gain at IC = 1 A, VCE = 5 V; enables ~250 µA base drive for full 1 A output, reducing MCU I/O loading. |
| VCE(sat) | ≤ 1.5 Vdc at IC = 1000 mAdc, IB = 2.0 mAdc - saturation voltage determines conduction loss and heat generation in switch-mode use. |
| fT | 100–1000 MHz - current-gain bandwidth product at IC = 200 mA; confirms suitability for audio-frequency amplification and fast-switching applications. |
| RJA | 125 °C/W - junction-to-ambient thermal resistance; defines temperature rise per watt dissipated without heatsinking. |
Pinout & Package
Package: TO-92 (Case 29-10, Style 1), Pb-free, through-hole mounting. Dimensions conform to ON Semiconductor standard outline 98AON52857E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current return path; connected to ground or low-side reference; must handle full load current and provide low-impedance return. |
| 2 | Base | Control input; requires current-limited drive (e.g., series resistor) to set IB ≈ IC/hFE; sensitive to ESD and overvoltage. |
| 3 | Collector | High-side output node; connects to load and supply rail; carries full switched current and must be routed with adequate copper area. |
Key Features
| Feature | Design Value |
|---|---|
| High DC current gain | hFE ≥ 4,000 at IC = 1 A - reduces required base drive current, enabling direct interface with 3.3 V/5 V logic outputs. |
| Low saturation voltage | VCE(sat) ≤ 1.5 V - minimizes conduction loss and self-heating during on-state operation in power switching. |
| Wide operating temperature | −55°C to +150°C junction range - supports deployment in automotive engine compartments and industrial control enclosures. |
| TO-92 Pb-free package | RoHS-compliant marking "G" and microdot - meets global environmental regulations without lead-based solder compatibility compromises. |
| Controlled SOA | Defined thermal and second-breakdown limits per Figure 1 - enables reliable pulse-width modulated (PWM) load control up to 100 s duration. |
Applications
| Relay Driver Circuits | Lamp Dimming Modules |
|---|---|
|
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 NPN Darlington switch providing galvanic isolation between low-power controller and inductive relay coil. Use Value: Enables <1 mA base drive to switch >500 mA relay coils, reducing MCU GPIO stress and eliminating need for auxiliary driver ICs. |
Use Scenario: Phase-angle dimming of incandescent and halogen lamps in residential lighting controls. IC Role / Device Role / Timing Role: Main switching element in TRIAC gate driver stage, handling zero-crossing-triggered current pulses. Use Value: With VCEO = 50 V and SOA-rated pulsed operation, supports 230 V AC line-derived gate drive waveforms without snubber complexity. |
| DC Motor Speed Control | Industrial Solenoid Actuation |
|
Use Scenario: PWM-based speed regulation of small brushed DC motors in factory automation conveyors and valve actuators. IC Role / Device Role / Timing Role: Low-frequency power switch in half-bridge or single-ended topology, operating below 20 kHz. Use Value: Delivers 1 A continuous current with <1.5 V drop, limiting power loss to <1.5 W at full load - compatible with passive heatsinking. |
Use Scenario: On/off control of 24 V DC industrial solenoids in pneumatic cylinder valves and safety interlocks. IC Role / Device Role / Timing Role: Final-stage power switch interfacing with optocoupled logic-level signals in safety-critical control panels. Use Value: Robust V(BR)CBO = 60 V withstands inductive kickback up to 60 V, reducing clamp diode dependency in compact designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN Darlington transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBT6427 | Lower VCEO = 40 V, hFE = 2,000–20,000, same TO-92 package. | Not suitable for 48 V systems or higher-voltage inductive loads where MPS6725's 50 V rating provides margin. | Select MMBT6427 only when supply rails remain ≤ 36 V and thermal budget allows lower gain. |
| PN2222A | Single NPN (not Darlington), VCEO = 40 V, hFE = 100–300, higher VCE(sat) ≈ 0.6–1.0 V at 500 mA. | Requires ~5× more base current than MPS6725; unsuitable for direct MCU GPIO drive at 1 A loads. | Choose PN2222A only for low-current (<200 mA), high-speed (<100 ns) switching where Darlington delay is unacceptable. |
Compared with MMBT6427 and PN2222A, the MPS6725 offers superior voltage margin, 10–40× higher current gain, and proven SOA for sustained 1 A conduction - making it optimal for cost-sensitive, thermally constrained relay and solenoid interfaces where minimal external components are critical.
Availability
MPS6725 is available at Aetrix Electronics and suitable for relay driver circuits, lamp dimming modules, DC motor speed control, and industrial solenoid actuation requiring stable component supply and long-term manufacturing continuity.
Supply support for MPS6725 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 MPS6725 belongs to onsemi's legacy discrete power transistor family, engineered for high-reliability, low-cost switching in industrial control, appliance, and building automation systems.
FAQ
What is the maximum continuous collector current rating for the MPS6725?
The MPS6725 is rated for 1000 mAdc continuous collector current at TA = 25°C. Derating applies above 25°C at 8 mW/°C. At elevated ambient temperatures or with limited PCB copper area, actual usable current drops - e.g., at 70°C ambient, max continuous IC falls to approximately 550 mA based on RJA = 125°C/W and PD limit.
Does the MPS6725 have an integrated base-emitter resistor?
No, the MPS6725 does not include internal base-emitter resistors. It is a bare Darlington pair requiring external base current limiting - typically via a series resistor sized to deliver ~2 mA base drive for 1 A collector current, assuming hFE ≥ 4,000. This differs from digital transistors (e.g., NSM1012MR) which integrate biasing networks.
What is the safe operating area (SOA) limitation for pulsed operation of the MPS6725?
The MPS6725 SOA is defined in Figure 1 of its datasheet: at 10 ms pulse width and 10% duty cycle, it supports up to ~700 mA at 30 V; at 100 s, limit drops to ~20 mA at 30 V. Thermal and second-breakdown boundaries constrain simultaneous voltage/current - exceeding SOA risks permanent parametric shift or bond-wire failure.
Is the MPS6725RLRPG variant RoHS-compliant and Pb-free?
Yes, the MPS6725RLRPG uses a Pb-free TO-92 package, confirmed by the "G" suffix and microdot marking per ON Semiconductor's Pb-Free Packaging Standard. It complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609 Category 1a moisture sensitivity level (MSL).
How does the MPS6725 compare to the MPS6724 in terms of voltage ratings?
The MPS6725 has higher voltage ratings than the MPS6724: VCEO = 50 V vs. 40 V, and VCBO = 60 V vs. 50 V. Both share identical package, gain, saturation voltage, and thermal specs. Use MPS6725 where 48 V nominal systems or transient overvoltages require extra margin beyond 40 V.
MPS6725 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body
- Packaging:
- Bulk
- 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)
MPS6725 FAQ
1.How can I place an order for MPS6725 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPS6725 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 MPS6725 reliable?
The price and inventory of MPS6725 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPS6725 is usually 5 days.
3.What payment methods are accepted for MPS6725?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPS6725 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPS6725?
MPS6725 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPS6725 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 MPS6725?
For technical support, including MPS6725 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPS6725 requirements.
6.How does Aetrix verify that MPS6725 is sourced from the original manufacturer or authorized distributors?
All MPS6725 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 MPS6725 meets industry standards.
7.What is the process for return or replacement of MPS6725?
All MPS6725 units undergo pre-shipment inspection (PSI). If there is an issue with MPS6725, 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 MPS6725 part is unused and in its original packaging.
Return procedure for MPS6725:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPS6725 Tags
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