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

onsemi MPSW55RLRAG

Name: MPSW55RLRAG
Brand: onsemi
SKU: MPSW55RLRAG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPSW55RLRAG

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: MPSW55RLRAG.pdf

Description:: TRANS PNP 60V 0.5A TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MPSW55RLRAG from onsemi is a PNP silicon small-signal transistor rated for −60 V_CEO, −500 mA continuous collector current, and 1.0 W total device dissipation at T_A = 25°C. It operates in amplifier and switching applications with h_FE ≥ 100 at −50 mA, V_CE(sat) ≤ −0.5 V at −250 mA/−10 mA drive, and f_T = 50 MHz - used in low-power audio preamplifiers and relay drivers.

For engineers reviewing the MPSW55RLRAG datasheet, pinout, applications, or equivalent options, key selection criteria include its TO-92 Pb-free package, guaranteed V_(BR)CEO = −60 V, thermal resistance R_JA = 125 °C/W, and verified DC current gain performance across −55°C to +150°C junction temperature range.

Technical Context

The MPSW55RLRAG is a discrete PNP bipolar junction transistor optimized for linear amplification and saturated switching in low-voltage, medium-current circuits. Its design supports stable h_FE over wide temperature ranges (−55°C to +150°C), low V_CE(sat) under high base drive, and predictable f_T behavior at 20 MHz test conditions.

It features a fixed emitter-base breakdown voltage of −4.0 V, collector cutoff current I_CES ≤ −0.5 μA at −40 V_CE, and output capacitance C_obo ≤ 15 pF - enabling reliable operation in Class-A amplifiers and digital logic interface stages where leakage and bandwidth are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−60 V - Maximum safe collector-emitter voltage before avalanche breakdown in open-base configuration
I_C (continuous)	−500 mA - Sustained collector current capability without thermal runaway at 25°C ambient
P_D @ T_A = 25°C	1.0 W - Power dissipation limit requiring heatsinking or derating above 25°C (8 mW/°C)
h_FE	≥100 - Minimum DC current gain at −50 mA collector current and −1.0 V_CE, ensuring robust base drive margin
f_T	50 MHz - Transition frequency confirming usable RF gain up to VHF band in common-emitter configuration
R_JA	125 °C/W - Thermal resistance defining junction-to-ambient temperature rise per watt dissipated in TO-92 package

Pinout & Package

Package: TO-92 (Case 29-10), Pb-free, straight-lead configuration, tape-and-reel packaging (2000 units/reel).

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current sink terminal; connected to most negative potential in PNP biasing networks
2	Base	Control electrode; requires negative bias relative to emitter to forward-bias base-emitter junction
3	Collector	Current source terminal; typically tied to supply rail in common-emitter amplifier or switch topologies

Key Features

Feature	Design Value
Pb-free TO-92 package	Complies with RoHS Directive 2011/65/EU; compatible with lead-free reflow soldering profiles
Guaranteed h_FE ≥ 100	Ensures consistent current amplification across production lots without binning or test screening
V_(BR)CEO = −60 V	Supports operation in 48 V industrial control rails and automotive 36 V nominal systems with safety margin
f_T = 50 MHz	Enables use in IF amplifiers, tone generators, and fast-switching PWM driver stages up to 10 MHz fundamental

Applications

Audio Preamp Stage	Relay Driver Circuit
Use Scenario: Low-noise voltage amplification of microphone or sensor signals in battery-powered portable devices. IC Role / Device Role / Timing Role: PNP small-signal amplifier operating in Class-A configuration with emitter degeneration. Use Value: Delivers >30 dB voltage gain at 1 kHz with <1% THD using single −9 V supply and minimal external components.	Use Scenario: Driving electromagnetic relays with coil currents up to 400 mA in PLC I/O modules. IC Role / Device Role / Timing Role: Saturated PNP switch controlling relay coil between V_CC and ground via base current limiting resistor. Use Value: Achieves <0.5 V saturation drop at 250 mA load, reducing power loss and enabling direct microcontroller GPIO interfacing.
LED Current Sink	Level-Shifting Interface
Use Scenario: Constant-current sinking for high-brightness indicator LEDs in automotive dashboards. IC Role / Device Role / Timing Role: Linear current regulator with emitter resistor feedback, biased by microcontroller DAC output. Use Value: Maintains ±3% LED current accuracy over −40°C to +85°C ambient with <10 mV/V line regulation.	Use Scenario: Bidirectional logic-level translation between 3.3 V MCU and 5 V peripheral bus. IC Role / Device Role / Timing Role: PNP-based active pull-up stage enabling open-drain signal inversion and voltage translation. Use Value: Supports 10 MHz data rates with <5 ns propagation delay and full rail-to-rail output swing.

Audio Preamp Stage

Relay Driver Circuit

Use Scenario: Low-noise voltage amplification of microphone or sensor signals in battery-powered portable devices.

IC Role / Device Role / Timing Role: PNP small-signal amplifier operating in Class-A configuration with emitter degeneration.

Use Value: Delivers >30 dB voltage gain at 1 kHz with <1% THD using single −9 V supply and minimal external components.

Use Scenario: Driving electromagnetic relays with coil currents up to 400 mA in PLC I/O modules.

IC Role / Device Role / Timing Role: Saturated PNP switch controlling relay coil between V_CC and ground via base current limiting resistor.

Use Value: Achieves <0.5 V saturation drop at 250 mA load, reducing power loss and enabling direct microcontroller GPIO interfacing.

LED Current Sink

Level-Shifting Interface

Use Scenario: Constant-current sinking for high-brightness indicator LEDs in automotive dashboards.

IC Role / Device Role / Timing Role: Linear current regulator with emitter resistor feedback, biased by microcontroller DAC output.

Use Value: Maintains ±3% LED current accuracy over −40°C to +85°C ambient with <10 mV/V line regulation.

Use Scenario: Bidirectional logic-level translation between 3.3 V MCU and 5 V peripheral bus.

IC Role / Device Role / Timing Role: PNP-based active pull-up stage enabling open-drain signal inversion and voltage translation.

Use Value: Supports 10 MHz data rates with <5 ns propagation delay and full rail-to-rail output swing.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC557B	V_CEO = −45 V, h_FE = 200–450 (typ), R_JA = 200 °C/W, same TO-92 package	Lower voltage rating limits use in 48 V systems; higher h_FE reduces required base drive but increases sensitivity to temperature drift	Select when lower base current and tighter h_FE tolerance are prioritized over voltage headroom and thermal performance
MPSA92	V_CEO = −300 V, I_C = −500 mA, P_D = 625 mW, TO-92 package	Higher voltage rating enables HV analog switches and CRT deflection circuits; lower power rating restricts continuous duty cycle	Select when >100 V breakdown is mandatory and average power remains below 0.625 W

Compared with BC557B and MPSA92, the MPSW55RLRAG offers balanced trade-offs: sufficient −60 V rating for industrial 48 V rails, 1.0 W dissipation for sustained switching, and tightly specified h_FE min of 100 - making it optimal for cost-sensitive, thermally constrained amplifier and driver designs where reliability across temperature is critical.

Availability

MPSW55RLRAG is available at Aetrix Electronics and suitable for audio preamplifiers, relay driver circuits, and LED current sink applications requiring stable component supply, RoHS compliance, and TO-92 form factor compatibility.

Supply support for MPSW55RLRAG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MPSW55RLRAG belongs to onsemi's legacy small-signal transistor product line, designed specifically for general-purpose linear amplification and switching in cost-sensitive, space-constrained consumer and industrial electronics.

FAQ

What is the maximum junction temperature for the MPSW55RLRAG?

The MPSW55RLRAG has an operating junction temperature range of −55°C to +150°C, as specified in its Absolute Maximum Ratings table. This allows deployment in under-hood automotive environments and industrial enclosures without forced cooling, provided thermal design respects R_JA = 125 °C/W and derating curves for ambient temperatures above 25°C.

Is the MPSW55RLRAG pin-compatible with the MPSW56RLRPG?

No - while both share the TO-92 package and identical pinout (Emitter/Base/Collector on pins 1/2/3), the MPSW55RLRAG is rated for −60 V_CEO, whereas the MPSW56RLRPG is rated for −80 V_CEO. Substituting one for the other requires verification of voltage stress margins in the target circuit; they are not drop-in replacements despite mechanical compatibility.

Does the MPSW55RLRAG support lead-free soldering processes?

Yes - the MPSW55RLRAG is explicitly marked as Pb-free in its ordering information and conforms to JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for lead-free reflow. Its TO-92 package is qualified for peak reflow temperatures up to 260°C, matching standard Pb-free process profiles.

What is the typical base-emitter on voltage for the MPSW55RLRAG?

The MPSW55RLRAG exhibits a typical V_BE(on) of −1.2 V at I_C = −250 mA and V_CE = −5.0 V, per its Electrical Characteristics table. This value reflects forward-biased PNP junction behavior and must be accounted for when calculating base resistor values in switching applications to ensure adequate drive current.

Can the MPSW55RLRAG be used in RF amplifier stages?

Yes - with an f_T of 50 MHz and measured small-signal gain up to 20 MHz, the MPSW55RLRAG is suitable for VHF-band RF amplifiers such as IF stages in AM/FM receivers or local oscillator buffers. Performance depends on proper impedance matching, stable biasing, and layout minimizing parasitic capacitance at pins 1–3.

MPSW55RLRAG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

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

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

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 10mA, 250mA

Current - Collector Cutoff (Max):: 500nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 50 @ 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)

MPSW55RLRAG FAQ

1.How can I place an order for MPSW55RLRAG through Aetrix?

Please submit a Request for Quotation (RFQ) for MPSW55RLRAG 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 MPSW55RLRAG reliable?

The price and inventory of MPSW55RLRAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSW55RLRAG is usually 5 days.

3.What payment methods are accepted for MPSW55RLRAG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSW55RLRAG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPSW55RLRAG?

MPSW55RLRAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPSW55RLRAG 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 MPSW55RLRAG?

For technical support, including MPSW55RLRAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSW55RLRAG requirements.

6.How does Aetrix verify that MPSW55RLRAG is sourced from the original manufacturer or authorized distributors?

All MPSW55RLRAG 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 MPSW55RLRAG meets industry standards.

7.What is the process for return or replacement of MPSW55RLRAG?

All MPSW55RLRAG units undergo pre-shipment inspection (PSI). If there is an issue with MPSW55RLRAG, 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 MPSW55RLRAG part is unused and in its original packaging.

Return procedure for MPSW55RLRAG:

1.Submit a request within 90 days.

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

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