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

onsemi MPSW05G

Name: MPSW05G
Brand: onsemi
SKU: MPSW05G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPSW05G

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: MPSW05G.pdf

Description:: TRANS NPN 60V 0.5A TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MPSW05G from onsemi is an NPN silicon small-signal transistor designed for general-purpose amplification and switching in low-power analog and digital circuits. It delivers 500 mA continuous collector current, 60 V collector-emitter breakdown voltage, and 1.0 W total device dissipation at TA = 25°C, with a DC current gain (hFE) of 80 at IC = 50 mA and VCE = 1.0 V. It is commonly used in audio preamplifier stages and discrete logic interface drivers.

For engineers reviewing the MPSW05G datasheet, pinout, applications, or equivalent options, key selection criteria include its TO-92 Pb-free package, thermal resistance (RJA = 125°C/W), fT = 50 MHz bandwidth, VCE(sat) ≤ 0.4 V at IC/IB = 25, and safe operating area defined up to 500 mA and 60 V.

Technical Context

The MPSW05G operates as a single NPN bipolar junction transistor optimized for linear amplification and saturated switching. Its design supports stable DC biasing with hFE ranging from 60–100 across temperature (−55°C to +150°C), and it maintains reliable cutoff behavior with ICBO ≤ 0.1 A at VCB = 40 V.

Thermal performance is defined by two dissipation ratings: 1.0 W at ambient (TA = 25°C) with 8.0 mW/°C derating, and 2.5 W at case (TC = 25°C) with 20 mW/°C derating-enabling use in compact PCB layouts where heatsinking is limited but case-to-heatsink conduction is feasible.

Key Specifications

Parameter	Value and Actual Design Meaning
VCEO	60 Vdc - Maximum allowable collector-emitter voltage before breakdown under open-base conditions.
IC (continuous)	500 mAdc - Sustained collector current capability without thermal runaway at TA = 25°C.
PD @ TA	1.0 W - Power dissipation limit with natural convection cooling; requires thermal derating above 25°C.
hFE	80 min @ IC = 50 mA, VCE = 1.0 V - Ensures predictable current amplification in Class-A amplifier biasing.
fT	50 MHz - Enables stable small-signal amplification up to mid-VHF frequencies in tuned circuits.
RJA	125 °C/W - Defines worst-case junction-to-ambient thermal path; informs minimum copper area needed for thermal relief.
VCE(sat)	≤ 0.4 V @ IC = 250 mA, IB = 10 mA - Low saturation voltage reduces power loss in switching applications.

Pinout & Package

Package: TO-92 (Case 29-10), Pb-free, bulk packaging (5000 units). Standard through-hole mounting with 0.1" lead pitch and bent-lead configuration.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Reference terminal for base-emitter junction; connects to circuit ground or low-impedance return path in common-emitter configurations.
2	Base	Control input for minority-carrier injection; requires current-limited drive (e.g., via 1–10 kΩ resistor) to avoid overdrive.
3	Collector	Output terminal carrying amplified load current; connects to supply rail or pull-up resistor in switching topologies.

Key Features

Feature	Design Value
Pb-free TO-92 package	Complies with RoHS Directive 2011/65/EU; eliminates lead contamination risk during soldering and end-of-life recycling.
1.0 W power rating at ambient	Supports higher gain or drive capability than standard 350 mW transistors (e.g., 2N3904), reducing need for paralleling devices.
50 MHz fT	Enables use in RF predriver stages up to ~20 MHz fundamental frequency with adequate gain margin.
V(BR)CEO = 60 V	Provides headroom for 24 V or 48 V industrial control rails with safety margin against transients.
Low VCE(sat) ≤ 0.4 V	Reduces conduction loss in high-duty-cycle switching (e.g., LED driver PWM), improving efficiency and thermal margin.

Applications

Audio Preamp Stage	Logic Level Shifter
Use Scenario: Amplifying weak microphone or sensor signals in battery-powered portable audio equipment. IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with fixed-bias or emitter-degenerated topology. Use Value: Delivers >30 dB voltage gain at 1 kHz with THD < 1% at 100 mV input, leveraging hFE ≥ 80 and fT = 50 MHz.	Use Scenario: Translating 3.3 V microcontroller GPIO outputs to 5 V or 12 V loads in industrial I/O modules. IC Role / Device Role / Timing Role: Discrete NPN switch driving relays, optocouplers, or MOSFET gates with fast turn-on/turn-off. Use Value: Achieves < 100 ns propagation delay and < 200 ns fall time due to low Cobo (12 pF) and high fT (50 MHz).
DC Motor Driver (Small)	LED Current Regulator
Use Scenario: Controlling brushed DC motors in robotics or consumer appliances with PWM duty cycles up to 95%. IC Role / Device Role / Timing Role: Low-side switch in saturated mode, handling peak currents up to 500 mA with minimal VCE drop. Use Value: Maintains VCE(sat) ≤ 0.4 V at 250 mA, limiting power loss to < 100 mW and enabling operation without heatsink.	Use Scenario: Constant-current driving of indicator LEDs or display segments in automotive dashboards or medical panels. IC Role / Device Role / Timing Role: Emitter-follower configured current source with precision resistor feedback. Use Value: Provides ±5% current stability over −40°C to +85°C using hFE's predictable temperature coefficient and low VBE(sat) variation.

Audio Preamp Stage

Logic Level Shifter

Use Scenario: Amplifying weak microphone or sensor signals in battery-powered portable audio equipment.

IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with fixed-bias or emitter-degenerated topology.

Use Value: Delivers >30 dB voltage gain at 1 kHz with THD < 1% at 100 mV input, leveraging hFE ≥ 80 and fT = 50 MHz.

Use Scenario: Translating 3.3 V microcontroller GPIO outputs to 5 V or 12 V loads in industrial I/O modules.

IC Role / Device Role / Timing Role: Discrete NPN switch driving relays, optocouplers, or MOSFET gates with fast turn-on/turn-off.

Use Value: Achieves < 100 ns propagation delay and < 200 ns fall time due to low Cobo (12 pF) and high fT (50 MHz).

DC Motor Driver (Small)

LED Current Regulator

Use Scenario: Controlling brushed DC motors in robotics or consumer appliances with PWM duty cycles up to 95%.

IC Role / Device Role / Timing Role: Low-side switch in saturated mode, handling peak currents up to 500 mA with minimal VCE drop.

Use Value: Maintains VCE(sat) ≤ 0.4 V at 250 mA, limiting power loss to < 100 mW and enabling operation without heatsink.

Use Scenario: Constant-current driving of indicator LEDs or display segments in automotive dashboards or medical panels.

IC Role / Device Role / Timing Role: Emitter-follower configured current source with precision resistor feedback.

Use Value: Provides ±5% current stability over −40°C to +85°C using hFE's predictable temperature coefficient and low VBE(sat) variation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN small-signal transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2N4401	VCEO = 40 V, IC = 600 mA, fT = 250 MHz, TO-92 package	Higher speed but lower voltage rating; unsuitable for 48 V systems	Select when bandwidth > 100 MHz required and supply voltage ≤ 30 V.
BC547B	VCEO = 45 V, IC = 100 mA, hFE = 200–450, TO-92 package	Higher gain but lower current/power capability; not rated for 500 mA loads	Prefer for low-noise preamp stages where signal level is sub-mV and load current < 50 mA.

Compared with 2N4401 and BC547B, the MPSW05G offers superior voltage headroom (60 V) and power handling (1.0 W) while maintaining adequate fT (50 MHz) for general-purpose switching and amplification-making it optimal for industrial control interfaces where reliability under transient overvoltage is critical.

Availability

MPSW05G is available at Aetrix Electronics and suitable for audio preamplifiers, logic-level translators, and low-power motor drivers requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.

Supply support for MPSW05G 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 manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The MPSW05G belongs to onsemi's legacy NPN small-signal transistor product line, engineered for cost-sensitive, high-reliability discrete amplification and switching in space-constrained through-hole designs.

FAQ

What is the maximum collector-emitter voltage rating for the MPSW05G?

The MPSW05G has a guaranteed minimum collector-emitter breakdown voltage (V(BR)CEO) of 60 Vdc at IC = 1.0 mA and IB = 0. This rating defines the absolute upper limit for DC or peak repetitive voltage applied between collector and emitter with the base open. Exceeding this value risks avalanche-induced permanent damage. The MPSW05G must not be used in circuits where transient spikes or steady-state voltages exceed 60 V without external clamping.

Does the MPSW05G support surface-mount assembly?

No, the MPSW05G is exclusively offered in the through-hole TO-92 (Case 29-10) package with bent leads. It is not available in SOT-23, SOT-223, or any surface-mount variant. For SMT-compatible alternatives with similar electrical specs, consider the MMBT4401 (SOT-23) or PZT4401 (SOT-223), though their voltage and power ratings differ and require layout validation.

What is the typical DC current gain (hFE) of the MPSW05G at 250 mA collector current?

The MPSW05G datasheet specifies hFE ≥ 60 at IC = 250 mA and VCE = 1.0 V, measured at TA = 25°C. At lower currents (e.g., IC = 50 mA), hFE rises to ≥ 80. Gain decreases with increasing temperature and collector current-designers should consult Figure 1 in the official MPSW05/D datasheet to select appropriate bias resistors for target operating points across the full −55°C to +150°C junction range.

Can the MPSW05G be used in linear regulator pass transistor applications?

The MPSW05G is not recommended as a pass transistor in linear regulators due to its limited Safe Operating Area (SOA) at high VCE and moderate IC combinations. Figure 7 shows second-breakdown limits constrain operation above ~10 V and 100 mA simultaneously. For linear regulation, purpose-built pass transistors (e.g., D44H11) or integrated LDOs provide better thermal stability and SOA margin.

Is the MPSW05G pinout compatible with the MPSW06G?

Yes, the MPSW05G and MPSW06G share identical TO-92 package dimensions and pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. However, they differ electrically-MPSW06G has VCEO = 80 V and VCBO = 80 V versus 60 V for MPSW05G-so direct substitution is only valid if the higher voltage rating is unnecessary and thermal design accommodates identical power dissipation limits.

MPSW05G 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

Current - Collector (Ic) (Max):: 500 mA

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

Vce Saturation (Max) @ Ib, Ic:: 400mV @ 10mA, 250mA

Current - Collector Cutoff (Max):: 500nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 60 @ 250mA, 1V

Power - Max:: 1 W

Frequency - Transition:: 50MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

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

MPSW05G FAQ

1.How can I place an order for MPSW05G through Aetrix?

Please submit a Request for Quotation (RFQ) for MPSW05G 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 MPSW05G reliable?

The price and inventory of MPSW05G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSW05G is usually 5 days.

3.What payment methods are accepted for MPSW05G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSW05G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPSW05G?

MPSW05G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPSW05G 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 MPSW05G?

For technical support, including MPSW05G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSW05G requirements.

6.How does Aetrix verify that MPSW05G is sourced from the original manufacturer or authorized distributors?

All MPSW05G 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 MPSW05G meets industry standards.

7.What is the process for return or replacement of MPSW05G?

All MPSW05G units undergo pre-shipment inspection (PSI). If there is an issue with MPSW05G, 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 MPSW05G part is unused and in its original packaging.

Return procedure for MPSW05G:

1.Submit a request within 90 days.

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

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