My Inquiry
My Account
onsemi MPSW51ARLRAG
,TO-226_bentlead.jpg)
- Part No.:
- MPSW51ARLRAG
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Datasheet:
-
MPSW51ARLRAG.pdf
- Description:
- TRANS PNP 40V 1A TO92
- Quantity:
- Payment:
- Shipping:
Inventory:6,079
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPSW51ARLRAG 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 high-current linear switching and power amplification stages of industrial control and power supply circuits.
For engineers reviewing the MPSW51ARLRAG datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, TO-92 package thermal resistance (RJC = 50°C/W), hFE ≥ 60 at −100 mA, VCE(sat) ≤ −0.7 V at −1000 mA/−100 mA drive, and fT = 50 MHz bandwidth capability.
Technical Context
This device operates as a medium-power PNP BJT with fixed gain structure optimized for DC and low-frequency switching up to 50 MHz. Its safe operating area (SOA) is defined by thermal limits (TJ = −55°C to +150°C), second breakdown constraints, and current-limiting behavior under pulsed conditions (duty cycle ≤ 10%).
Electrical characteristics are specified at TA = 25°C and TC = 25°C, with derating applied above ambient or case temperature thresholds. The device exhibits typical Cobo = 30 pF at −10 VCB, supporting stable operation in low-noise amplifier and driver configurations where output capacitance impacts frequency response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −40 Vdc - Maximum collector-emitter voltage before breakdown; defines maximum supply rail compatibility in PNP switch designs. |
| IC | −1000 mAdc - Continuous collector current rating; supports load switching up to 1 A without forced cooling. |
| PD @ TC = 25°C | 2.5 W - Total device dissipation at case temperature; enables use with heatsink or PCB copper pour for thermal management. |
| hFE | ≥ 60 at IC = −100 mAdc - Minimum DC current gain ensures reliable base drive margin in saturated switch applications. |
| VCE(sat) | ≤ −0.7 Vdc at IC/IB = 10 - Low saturation voltage minimizes conduction loss and self-heating during on-state operation. |
| fT | 50 MHz - Current-gain–bandwidth product confirms suitability for audio-frequency amplification and fast-switching control loops. |
Pinout & Package
Package: TO-92 (TO-226), Case 29-10, Style 1 - 3-lead through-hole plastic package with bent leads, rated for 1 W at TA = 25°C and 2.5 W at TC = 25°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current sink terminal; connects to higher-potential rail in PNP common-emitter configurations. |
| 2 | Base | Control input; requires negative bias relative to emitter to turn on; drives switching via current injection. |
| 3 | Collector | Output terminal; connects to load and lower-potential node; carries full load current when saturated. |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free and RoHS compliant | Meets EU Directive 2011/65/EU; suitable for environmentally regulated industrial and consumer end equipment. |
| RJC = 50°C/W | Low junction-to-case thermal resistance enables efficient heat transfer to external heatsinks or copper planes. |
| VBRCBO = −50 V | High collector-base breakdown voltage allows robust operation in inductive load switching with flyback transients. |
| hFE ≥ 50 at −1000 mA | Guaranteed minimum gain at full rated current ensures predictable base drive requirements in high-load scenarios. |
Applications
| Industrial Power Supplies | DC Motor Control Drivers |
|---|---|
|
Use Scenario: Regulated 24 V DC output stage in open-frame industrial SMPS using discrete PNP pass element. IC Role / Device Role / Timing Role: High-current PNP switch regulating output voltage via base-controlled emitter-follower configuration. Use Value: Delivers 1 A continuous load current with < −0.7 V saturation drop, minimizing thermal stress and improving efficiency over alternatives with higher VCE(sat). |
Use Scenario: H-bridge low-side driver stage controlling bidirectional 12 V brushed DC motor in factory automation actuators. IC Role / Device Role / Timing Role: PNP current sink in complementary pair with NPN to enable full-bridge current reversal. Use Value: Supports 100% duty-cycle operation at 1 A with validated SOA up to 150°C junction temperature, ensuring reliability in thermally constrained enclosures. |
| LED Constant-Current Drivers | Relay and Solenoid Interface Circuits |
|
Use Scenario: Linear constant-current source for high-brightness LED arrays in signage and machine vision lighting. IC Role / Device Role / Timing Role: PNP pass transistor in adjustable current regulator loop with sense resistor feedback. Use Value: Maintains stable current regulation across −40°C to +85°C ambient due to low VBE(on) drift and tight hFE distribution. |
Use Scenario: Inductive load interface between microcontroller GPIO and 24 V relay coil in PLC I/O modules. IC Role / Device Role / Timing Role: PNP switch providing reverse-polarity protection and transient suppression via integrated clamp diode path. Use Value: Withstands −50 VCBO and −40 VCEO, enabling direct connection to 24 V systems without external flyback diodes in many implementations. |
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 |
|---|---|---|---|
| MPSW51RLRAG | Lower VCEO (−30 V) and VCBO (−40 V); same TO-92 package and pinout. | Suitable only for ≤24 V systems; not recommended for 36 V or higher bus applications. | Select MPSW51RLRAG only when system voltage headroom is limited and full −40 V rating is unnecessary. |
| BC558B | Lower IC (−100 mA), lower PD (0.5 W), and lower fT (150 kHz); TO-92 package. | Restricted to signal-level amplification or low-power switching; cannot replace MPSW51ARLRAG in 1 A load paths. | Use BC558B only for biasing, logic inversion, or sensor interface-not for power switching or motor drive. |
Compared with MPSW51RLRAG and BC558B, MPSW51ARLRAG provides uniquely balanced high-voltage, high-current, and high-bandwidth performance in a standard TO-92 footprint-making it the only option among the three capable of sustaining 1 A at −40 V with 50 MHz small-signal gain.
Availability
MPSW51ARLRAG is available at Aetrix Electronics and suitable for industrial power supplies, DC motor control drivers, and LED constant-current drivers requiring stable component supply and long-term manufacturing continuity.
Supply support for MPSW51ARLRAG 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 focused on energy-efficient electronics, delivering power management, analog, sensing, and connectivity solutions.
The MPSW51 series belongs to onsemi's general-purpose bipolar transistor product line, designed specifically for cost-sensitive, high-reliability industrial and automotive-qualified linear switching and amplification applications.
FAQ
What is the maximum continuous collector current rating for MPSW51ARLRAG?
The MPSW51ARLRAG is rated for −1000 mAdc continuous collector current at TC = 25°C. Derating applies above this temperature per the 20 mW/°C specification. This rating enables direct replacement of legacy PNP transistors in 1 A load switching applications without redesigning thermal layout, provided case temperature remains within specification.
Does MPSW51ARLRAG have Pb-free and RoHS-compliant packaging?
Yes, MPSW51ARLRAG uses a Pb-free TO-92 package and is fully RoHS compliant per EU Directive 2011/65/EU. The "G" suffix in the part number explicitly denotes the Pb-free construction, and the device meets onsemi's standardized soldering and mounting requirements for lead-free reflow and hand-soldering processes.
What is the guaranteed DC current gain (hFE) of MPSW51ARLRAG at high current?
MPSW51ARLRAG guarantees hFE ≥ 50 at IC = −1000 mAdc and VCE = −1.0 Vdc. This minimum gain at full rated current ensures predictable base drive design-requiring no more than −100 mA base current to sustain −1000 mA collector current in saturation, simplifying driver circuit sizing.
Can MPSW51ARLRAG be used in linear amplifier configurations?
Yes, MPSW51ARLRAG supports linear operation with fT = 50 MHz and typical Cobo = 30 pF, making it suitable for audio-frequency amplifiers and low-noise preamp stages. Its VCE(sat) and hFE stability across temperature ensure consistent gain and distortion performance in Class-A or AB topologies up to 20 kHz.
What is the thermal resistance from junction to case (RJC) for MPSW51ARLRAG?
The thermal resistance from junction to case (RJC) for MPSW51ARLRAG is 50°C/W. This value enables effective heat extraction when mounted to a heatsink or large copper area, allowing the device to dissipate its full 2.5 W rating at TC = 25°C-critical for maintaining reliability in enclosed industrial environments.
MPSW51ARLRAG 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):
- 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)
MPSW51ARLRAG FAQ
1.How can I place an order for MPSW51ARLRAG through Aetrix?
Please submit a Request for Quotation (RFQ) for MPSW51ARLRAG 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 MPSW51ARLRAG reliable?
The price and inventory of MPSW51ARLRAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSW51ARLRAG is usually 5 days.
3.What payment methods are accepted for MPSW51ARLRAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSW51ARLRAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPSW51ARLRAG?
MPSW51ARLRAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPSW51ARLRAG 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 MPSW51ARLRAG?
For technical support, including MPSW51ARLRAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSW51ARLRAG requirements.
6.How does Aetrix verify that MPSW51ARLRAG is sourced from the original manufacturer or authorized distributors?
All MPSW51ARLRAG 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 MPSW51ARLRAG meets industry standards.
7.What is the process for return or replacement of MPSW51ARLRAG?
All MPSW51ARLRAG units undergo pre-shipment inspection (PSI). If there is an issue with MPSW51ARLRAG, 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 MPSW51ARLRAG part is unused and in its original packaging.
Return procedure for MPSW51ARLRAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPSW51ARLRAG Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
