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onsemi MPSW51ARLRP
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- Part No.:
- MPSW51ARLRP
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Datasheet:
-
MPSW51ARLRP.pdf
- Description:
- TRANS PNP 40V 1A TO92
- Quantity:
- Payment:
- Shipping:
Inventory:5,871
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Product details
Overview
MPSW51ARLRP from onsemi is a PNP silicon bipolar junction transistor rated for −40 VCEO, −50 VCBO, −5.0 VEBO, −1000 mA continuous collector current, and 2.5 W total dissipation at TC = 25°C, used in medium-power linear and switching applications such as relay drivers and power supply control stages.
For engineers reviewing the MPSW51ARLRP datasheet, pinout, applications, or equivalent options, key selection criteria include verified VCE(sat) ≤ −0.7 V at IC/IB = 10, hFE ≥ 50 at IC = −1000 mA, fT ≥ 50 MHz, RJC = 50 °C/W, and TO-92 (Case 29-10) mechanical compatibility.
Technical Context
This device operates as a medium-power PNP BJT with fixed emitter-base and collector-base breakdown limits, designed for DC and low-frequency switching where thermal management via case conduction is critical. Its fT of 50 MHz supports audio-frequency amplification and fast-switching loads up to ~100 kHz.
The transistor exhibits VBE(on) ≤ −1.2 V at IC = −1000 mA and VCE = −1.0 V, with Cobo ≤ 30 pF at VCB = −10 V, enabling stable operation in feedback-controlled regulators and discrete driver stages without parasitic oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −40 Vdc - Maximum safe collector-emitter voltage before avalanche in open-base configuration. |
| IC (continuous) | −1000 mAdc - Sustained collector current capability with adequate heatsinking at TC = 25°C. |
| PD @ TC = 25°C | 2.5 W - Total power dissipation limit when case temperature is maintained at 25°C. |
| VCE(sat) | ≤ −0.7 Vdc at IC = −1000 mAdc, IB = −100 mAdc - Low saturation voltage enables efficient switching with <0.7 V dropout. |
| fT | ≥ 50 MHz at IC = −50 mAdc, VCE = −10 Vdc - Minimum transition frequency for small-signal amplification up to mid-audio range. |
| RJC | 50 °C/W - Thermal resistance from junction to case, defining minimum heatsink requirement for 2.5 W operation. |
Pinout & Package
Package: TO-92 (Case 29-10), 1 W rating, straight-lead variant per Style 2 pin assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal; requires −100 mA base drive to saturate at −1000 mA collector current. |
| 2 | Emitter | Current source terminal; connected to higher potential rail in PNP switching configurations. |
| 3 | Collector | Output terminal; sinks load current to ground or lower-potential node when active. |
Key Features
| Feature | Design Value |
|---|---|
| Pb-free and RoHS compliant | Meets EU Directive 2011/65/EU; compatible with lead-free reflow profiles up to 260°C peak. |
| High current gain at full load | hFE ≥ 50 at IC = −1000 mA ensures reliable saturation with modest base drive circuitry. |
| Low VCE(sat) | ≤ −0.7 V at rated IC/IB reduces conduction loss and self-heating in high-duty-cycle switching. |
| Thermally robust package | RJC = 50 °C/W enables direct mounting to metal chassis or small heatsinks for 2.5 W operation. |
| Wide operating temperature | Junction range −55°C to +150°C supports industrial and automotive under-hood environments. |
Applications
| DC Power Supply Regulation | Relay Driver Circuit |
|---|---|
|
Use Scenario: Discrete pass transistor in linear regulator stage delivering up to 1 A output current with adjustable output voltage. IC Role / Device Role / Timing Role: PNP series pass element controlling current flow between unregulated input and regulated output bus. Use Value: VCE(sat) ≤ −0.7 V minimizes dropout voltage and improves efficiency at full load; hFE ≥ 50 simplifies base bias network design. |
Use Scenario: Driving 12 V, 500 mA electromagnetic relay coil from microcontroller GPIO with level-shifting interface. IC Role / Device Role / Timing Role: High-current switch interfacing low-voltage logic to inductive load, providing galvanic isolation via optocoupler or direct drive. Use Value: −40 VCEO withstands relay coil flyback transients; RJC = 50 °C/W allows sustained 100% duty cycle without external heatsink. |
| LED Current Control | Audio Amplifier Stage |
|
Use Scenario: Constant-current sink for high-brightness LED strings in signage or automotive lighting systems. IC Role / Device Role / Timing Role: Linear current regulator using emitter-follower configuration with precision sense resistor feedback. Use Value: Stable hFE across IC = −10–1000 mA enables accurate current mirroring; −5.0 VEBO rating accommodates common-cathode LED topology. |
Use Scenario: Class-A preamplifier or driver stage in portable audio equipment requiring low-noise, medium-gain amplification. IC Role / Device Role / Timing Role: Small-signal PNP amplifier operating in active region with VCE ≈ −5 V and IC ≈ −50 mA. Use Value: fT ≥ 50 MHz ensures flat gain response through 20 kHz audio band; Cobo ≤ 30 pF prevents instability in capacitive-loaded feedback networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP high-current transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPSW51RLRPG | VCEO = −30 V (vs. −40 V); otherwise identical electrical specs and TO-92 packaging. | Not suitable for 36–40 V system rails or higher-energy flyback suppression. | Select MPSW51RLRPG only if system max VCE remains ≤ −30 V and cost sensitivity outweighs margin. |
| PN2907A | VCEO = −60 V, but IC = −600 mA (vs. −1000 mA); hFE min = 100 at IC = −150 mA only. | Lower current capability limits use in >600 mA loads; higher VCEO margin useful in 48 V systems. | Choose PN2907A when higher voltage headroom is required and load current stays below 600 mA. |
Compared with MPSW51ARLRP, MPSW51RLRPG offers identical thermal and gain performance but reduced voltage rating, while PN2907A trades current capacity for greater breakdown margin-neither is pin-compatible without layout review due to differing hFE vs. IC curves and saturation behavior.
Availability
MPSW51ARLRP is available at Aetrix Electronics and suitable for DC power supply regulation, relay driver circuits, and LED current control requiring stable component supply, consistent Pb-free compliance, and TO-92 mechanical interchangeability.
Supply support for MPSW51ARLRP 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 management, analog, sensing, and connectivity solutions for automotive, industrial, and consumer markets.
The MPSW51A family is part of onsemi's general-purpose bipolar transistor portfolio, engineered for medium-power linear and switching applications where reliability, thermal performance, and RoHS compliance are essential.
FAQ
What is the maximum continuous collector current rating for MPSW51ARLRP?
The MPSW51ARLRP is rated for −1000 mAdc continuous collector current when operated with case temperature maintained at 25°C. Derating is required above 25°C at 20 mW/°C, and actual usable current depends on PCB copper area, ambient temperature, and heatsinking. The device achieves this rating with RJC = 50 °C/W and PD = 2.5 W at TC = 25°C.
Is MPSW51ARLRP pin-compatible with MPSW51RLRPG?
Yes, MPSW51ARLRP and MPSW51RLRPG share identical TO-92 (Case 29-10) packaging and Style 2 pinout (Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector). However, they differ in VCEO (−40 V vs. −30 V) and VCBO (−50 V vs. −40 V), so substitution requires verification of voltage stress margins in the target circuit.
What is the typical DC current gain (hFE) of MPSW51ARLRP at full load?
At IC = −1000 mAdc, VCE = −1.0 Vdc, and TA = 25°C, the MPSW51ARLRP guarantees hFE ≥ 50. This value is confirmed in the "ON CHARACTERISTICS" table of the official datasheet and supports robust saturation with IB = −100 mAdc, making it suitable for high-current switching without excessive base drive overhead.
Does MPSW51ARLRP support lead-free soldering processes?
Yes, MPSW51ARLRP is Pb-free and RoHS compliant, qualified for standard lead-free reflow profiles with peak temperatures up to 260°C. The "G" suffix and microdot marking indicate conformance, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for surface-mount assembly without baking.
What is the thermal resistance from junction to case (RJC) for MPSW51ARLRP?
The MPSW51ARLRP has a specified RJC of 50 °C/W, measured under standard test conditions with the case mounted to a thermally controlled cold plate. This value enables accurate junction temperature estimation (TJ = TC + PD × RJC) and informs heatsink selection for continuous 2.5 W operation.
MPSW51ARLRP 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:
- PNP
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 700mV @ 100mA, 1A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 100mA, 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)
MPSW51ARLRP FAQ
1.How can I place an order for MPSW51ARLRP through Aetrix?
Please submit a Request for Quotation (RFQ) for MPSW51ARLRP 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 MPSW51ARLRP reliable?
The price and inventory of MPSW51ARLRP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSW51ARLRP is usually 5 days.
3.What payment methods are accepted for MPSW51ARLRP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSW51ARLRP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPSW51ARLRP?
MPSW51ARLRP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPSW51ARLRP 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 MPSW51ARLRP?
For technical support, including MPSW51ARLRP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSW51ARLRP requirements.
6.How does Aetrix verify that MPSW51ARLRP is sourced from the original manufacturer or authorized distributors?
All MPSW51ARLRP 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 MPSW51ARLRP meets industry standards.
7.What is the process for return or replacement of MPSW51ARLRP?
All MPSW51ARLRP units undergo pre-shipment inspection (PSI). If there is an issue with MPSW51ARLRP, 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 MPSW51ARLRP part is unused and in its original packaging.
Return procedure for MPSW51ARLRP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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