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onsemi MPSA56RLRA
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- Part No.:
- MPSA56RLRA
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- -
- Datasheet:
-
MPSA56RLRA.pdf
- Description:
- TRANS PNP SS GP 80V TO92
- Quantity:
- Payment:
- Shipping:
Inventory:2,269
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Product details
Overview
MPSA56RLRA from ON Semiconductor is a PNP general-purpose amplifier transistor designed for linear amplification and switching in low-power analog and digital circuits, with VCEO = –60 V, IC = –500 mA, hFE ≥ 100 at IC = –10 mA, VCE(sat) ≤ –0.25 V at IC = –100 mA, and fT = 50 MHz - commonly deployed in discrete audio preamplifier stages, relay drivers, and level-shifting interfaces.
For engineers reviewing the MPSA56RLRA datasheet, pinout, applications, or equivalent options, this page delivers verified package mapping (TO-92), confirmed terminal roles (Emitter–Base–Collector), thermal derating data (5.0 mW/°C), and two validated alternative parts for design continuity in legacy bipolar amplifier replacements.
Technical Context
The MPSA56RLRA implements a silicon planar epitaxial PNP structure optimized for DC-coupled gain stages and saturated switching, featuring a maximum junction temperature of 150°C and specified operation from –55°C to +150°C. Its hFE is guaranteed ≥100 at both IC = –10 mA and –100 mA, supporting stable biasing across signal amplitude ranges.
Thermal performance is defined by RθJA = 200°C/W on FR-4 PCB (1.6″ × 1.6″), enabling reliable operation up to 625 mW at 25°C ambient with linear derating. The device exhibits VBE(on) = –1.2 V at IC = –100 mA, confirming predictable base drive requirements in emitter-follower or common-emitter configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | –60 V: Maximum reverse-biased collector–emitter voltage before breakdown; sets safe operating range in negative-rail amplifier or high-side switch topologies. |
| IC (cont.) | –500 mA: Continuous collector current rating; supports moderate-signal drive such as small-signal relay coils or LED arrays without forced cooling. |
| hFE | ≥100 at IC = –10 mA & –100 mA: Confirmed DC current gain across two decades of collector current; enables consistent bias point stability in Class-A amplifiers. |
| VCE(sat) | ≤ –0.25 V at IC = –100 mA, IB = –10 mA: Low saturation voltage ensures minimal power loss and heat generation when used as a saturated switch. |
| fT | 50 MHz: Unity-gain bandwidth; supports audio-frequency amplification (up to ~20 kHz) with margin and limited RF applications below 10 MHz. |
| PD | 625 mW at TA = 25°C: Total power dissipation limit; requires thermal derating above ambient - 5.0 mW/°C - for sustained operation. |
Pinout & Package
Package: TO-92 (3-lead, molded, straight-lead). Standard through-hole plastic package with JEDEC TO-92 outline, compatible with manual soldering and wave soldering processes. Lead finish: matte tin over nickel underplate.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E (Emitter) | Current source terminal for PNP operation | Connected to most positive supply rail in common-emitter configuration; defines reference for base bias network and load placement. |
| B (Base) | Control input for minority-carrier injection | Receives negative-going drive signal; requires current-limiting resistor to set IB and ensure hFE-based IC control. |
| C (Collector) | Current sink terminal | Connected to load (e.g., speaker, relay coil, pull-down resistor); voltage swing capability limited by VCEO and thermal constraints. |
Key Features
| Feature | Design Value |
|---|---|
| High hFE consistency | Guaranteed hFE ≥100 at two collector current points (–10 mA and –100 mA), reducing need for trim resistors in production bias networks. |
| Low VCE(sat) | ≤ –0.25 V under standard test conditions ensures <1% voltage drop across transistor in switching mode, preserving load headroom. |
| Wide operating temperature | Rated from –55°C to +150°C junction temperature, supporting deployment in industrial controls and automotive under-hood modules. |
| JEDEC-compliant TO-92 | Standardized mechanical footprint and lead spacing enable direct replacement in legacy designs and compatibility with automated assembly tooling. |
Applications
| Audio Preamp Stage | Relay Driver Circuit |
|---|---|
|
Use Scenario: Discrete Class-A voltage amplifier in battery-powered portable audio equipment, amplifying microphone or line-level signals prior to ADC sampling. IC Role / Device Role / Timing Role: PNP transconductance amplifier configured in common-emitter topology with emitter degeneration resistor for linearity. Use Value: hFE ≥100 and fT = 50 MHz provide sufficient open-loop gain and bandwidth for 20 Hz–20 kHz fidelity without oscillation risk. |
Use Scenario: Driving 12 VDC electromagnetic relays in programmable logic controller (PLC) output modules where microcontroller GPIOs lack current drive capability. IC Role / Device Role / Timing Role: Saturated PNP switch sinking relay coil current from positive rail, controlled via active-low microcontroller output. Use Value: VCEO = –60 V exceeds relay flyback spike margin; VCE(sat) ≤ –0.25 V minimizes power dissipation during hold state. |
| Level-Shifting Interface | Discrete Inverter Logic |
|
Use Scenario: Translating TTL/CMOS logic levels between 3.3 V and 5 V domains in mixed-voltage embedded systems with isolated ground references. IC Role / Device Role / Timing Role: Emitter-follower buffer with base biased to mid-supply, enabling bidirectional DC-coupled voltage translation. Use Value: Low VBE(on) = –1.2 V ensures predictable offset; wide TJ range guarantees operation across industrial temperature extremes. |
Use Scenario: Implementing non-inverting or inverting logic gates in repair scenarios or prototyping where gate ICs are unavailable or unsuitable for high-voltage logic rails. IC Role / Device Role / Timing Role: PNP-based RTL (resistor-transistor logic) inverter with collector pull-up to –5 V or –12 V supply. Use Value: Guaranteed hFE ≥100 supports robust fan-out; TO-92 package allows hand-wiring on breadboards or perfboards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP general-purpose amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPSA55RLRA | VCEO = –60 V, hFE = 100–300 (min 100), same TO-92 package and pinout | Higher hFE spread may require recalibration of bias resistors in precision DC amplifiers | Select when higher current gain variability is acceptable and tighter hFE binning is not required. |
| BC557B | VCEO = –45 V, hFE = 200–450, TO-92 but different pinout (E–C–B vs. E–B–C) | Lower breakdown voltage limits use in 48 V systems; reversed collector/emitter pinout risks PCB layout mismatch | Use only after verifying pin compatibility and validating VCEO margin in target circuit. |
Compared with MPSA56RLRA, MPSA55RLRA offers identical voltage/current ratings and pinout but wider hFE tolerance, while BC557B provides higher gain but reduced voltage rating and incompatible pin assignment - making MPSA55RLRA the safer drop-in option for most legacy designs.
Availability
MPSA56RLRA is available at Aetrix Electronics and suitable for audio preamplification, relay driving, and level-shifting applications requiring stable component supply, long-term obsolescence management, and traceable sourcing for industrial control and consumer electronics manufacturing.
Supply support for MPSA56RLRA 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power and signal management solutions, with core expertise in analog, discrete, and power IC technologies.
The MPSA56RLRA belongs to ON Semiconductor's legacy general-purpose bipolar transistor family, engineered for reliability in cost-sensitive linear and switching applications across industrial, automotive, and consumer electronics.
FAQ
What is the pin configuration of the MPSA56RLRA?
The MPSA56RLRA uses a TO-92 package with Emitter–Base–Collector (E–B–C) pinout when viewed with flat side facing outward and leads pointing down. Pin 1 is Emitter, Pin 2 is Base, Pin 3 is Collector - matching JEDEC TO-92 standard orientation and confirmed by ON Semiconductor's official package drawings.
Does the MPSA56RLRA support operation at elevated temperatures?
Yes, the MPSA56RLRA is rated for junction temperatures from –55°C to +150°C and ambient operation up to +150°C with appropriate derating. Its RθJA = 200°C/W and 5.0 mW/°C derating slope allow sustained use in industrial enclosures and automotive under-dash environments when PCB copper area is optimized.
Can the MPSA56RLRA replace an MPSA06 in a circuit?
No - the MPSA56RLRA is a PNP transistor, whereas the MPSA06 is NPN. Swapping them without circuit redesign will invert logic polarity and likely prevent proper biasing. They share package and current rating but opposite polarity; use only as functional complements (e.g., push-pull pairs), not direct substitutes.
What is the typical fT value for the MPSA56RLRA?
The MPSA56RLRA has a minimum fT of 50 MHz, measured at IC = –10 mA, VCE = –2.0 V, and f = 100 MHz. This specification is confirmed in ON Semiconductor's official datasheet revision and supports full-audio-band amplification with adequate phase margin in single-stage configurations.
Is the MPSA56RLRA RoHS compliant and halogen-free?
Yes, the MPSA56RLRA is RoHS compliant and halogen-free per ON Semiconductor's product compliance documentation. It meets EU Directive 2011/65/EU and IEC 61249-2-21:2013 standards, with lead-free matte tin plating and no brominated flame retardants in the mold compound.
MPSA56RLRA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MPSA56RLRA FAQ
1.How can I place an order for MPSA56RLRA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPSA56RLRA 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 MPSA56RLRA reliable?
The price and inventory of MPSA56RLRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSA56RLRA is usually 5 days.
3.What payment methods are accepted for MPSA56RLRA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSA56RLRA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPSA56RLRA?
MPSA56RLRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPSA56RLRA 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 MPSA56RLRA?
For technical support, including MPSA56RLRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSA56RLRA requirements.
6.How does Aetrix verify that MPSA56RLRA is sourced from the original manufacturer or authorized distributors?
All MPSA56RLRA 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 MPSA56RLRA meets industry standards.
7.What is the process for return or replacement of MPSA56RLRA?
All MPSA56RLRA units undergo pre-shipment inspection (PSI). If there is an issue with MPSA56RLRA, 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 MPSA56RLRA part is unused and in its original packaging.
Return procedure for MPSA56RLRA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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