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onsemi MPSA05RLRA
- Part No.:
- MPSA05RLRA
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Datasheet:
-
MPSA05RLRA.pdf
- Description:
- TRANS NPN 60V 0.5A TO92
- Quantity:
- Payment:
- Shipping:
Inventory:4,823
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Product details
Overview
MPSA05RLRA from ON Semiconductor is an NPN general-purpose amplifier transistor designed for low-to-medium current linear amplification and switching in consumer, industrial, and automotive signal conditioning circuits; features VCEO = 60 V, IC = 500 mA, hFE ≥ 100 at IC = 10 mA, VCE(sat) ≤ 0.25 V at IC = 100 mA, and fT = 100 MHz - deployed in audio preamplifier stages and relay driver interfaces.
For engineers reviewing the MPSA05RLRA datasheet, pinout, applications, or equivalent options, this page delivers verified package mapping (TO-92), confirmed DC gain behavior across operating current, saturation voltage performance under load, thermal derating guidance, and validated alternative transistors for design continuity and sourcing flexibility.
Technical Context
This device operates as a discrete silicon NPN bipolar junction transistor with fixed emitter-base and collector-base junction structures optimized for stable DC current amplification and moderate-speed switching. Its hFE remains ≥100 from IC = 10 mA to 100 mA at VCE = 1.0 V, and VCE(sat) stays ≤0.25 V under forced β = 10 drive conditions.
The MPSA05RLRA supports operation across −55°C to +150°C junction temperature range, exhibits ICEO ≤ 0.1 μA at VCE = 60 V, and maintains fT = 100 MHz at IC = 10 mA / VCE = 2.0 V - confirming suitability for audio-frequency amplification and digital logic interfacing where bandwidth and gain consistency are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - maximum safe collector-emitter voltage before breakdown; enables use in 48 V rail interfaces and relay coil drivers. |
| IC (Continuous) | 500 mA - continuous collector current rating; supports medium-power switching loads such as solenoids and LED arrays. |
| hFE | ≥100 at IC = 10 mA - ensures reliable base drive margin for low-current amplification without excessive base current overhead. |
| VCE(sat) | ≤0.25 V at IC = 100 mA, IB = 10 mA - minimizes conduction loss and self-heating in saturated switch applications. |
| fT | 100 MHz - usable bandwidth up to audio and low-RF frequencies; sufficient for PWM signal buffering and tone generation. |
| RθJA | 200 °C/W - thermal resistance on standard FR-4 PCB; requires heatsinking only above ~300 mW dissipation in ambient >50°C. |
| PD | 625 mW at TA = 25°C - total power dissipation limit; derates linearly by 5.0 mW/°C above 25°C ambient. |
Pinout & Package
Supplied in TO-92 plastic package (3-lead, molded, straight lead), with standardized pinout: Emitter (pin 1), Base (pin 2), Collector (pin 3) - compatible with legacy through-hole PCB layouts and manual prototyping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Emitter) | Current sink terminal | Reference node for biasing; connects to ground or low-impedance return path in common-emitter configurations. |
| Pin 2 (Base) | Control input | Accepts current-limited drive to modulate collector current; requires series resistor to limit IB per hFE target. |
| Pin 3 (Collector) | Output current source | Delivers amplified current to load; ties to positive supply via pull-up or load in switching mode. |
Key Features
| Feature | Design Value |
|---|---|
| High DC current gain stability | hFE ≥ 100 maintained from 10 mA to 100 mA collector current - reduces base drive variability across operating range. |
| Low saturation voltage | VCE(sat) ≤ 0.25 V at IC/IB = 10 - improves efficiency and thermal margin in switching applications. |
| Wide operating temperature range | −55°C to +150°C junction rating - supports deployment in under-hood automotive and industrial control environments. |
| Robust breakdown margins | VCEO = 60 V and VCBO = 60 V - provides headroom against transient overvoltage in inductive load switching. |
| Standardized TO-92 footprint | Compatible with legacy socketing, wave soldering, and hand-soldering processes - simplifies manufacturing and repair. |
Applications
| Audio Preamp Stage | Relay Driver Interface |
|---|---|
Use Scenario: Amplifying weak line-level signals (e.g., from microphones or sensors) prior to ADC sampling or further processing. IC Role / Device Role / Timing Role: Discrete NPN amplifier in common-emitter configuration providing voltage gain and impedance transformation. Use Value: Stable hFE ≥ 100 and fT = 100 MHz ensure flat frequency response up to 20 kHz with minimal distortion in Class-A biasing. |
Use Scenario: Driving electromagnetic relays (e.g., 12 V, 100–500 mW coils) from microcontroller GPIO pins. IC Role / Device Role / Timing Role: Saturated switch controlling relay coil current with low VCE(sat) to minimize power loss. Use Value: VCE(sat) ≤ 0.25 V at IC = 100 mA limits heat generation and enables direct MCU drive with minimal base resistor sizing. |
| LED Array Switch | Level Translation Circuit |
Use Scenario: Switching multi-LED strings (e.g., status indicators or backlight segments) powered from 5–24 V rails. IC Role / Device Role / Timing Role: Medium-current NPN switch sinking LED current to ground in low-side configuration. Use Value: IC = 500 mA rating and 625 mW power dissipation support up to 200 mA per channel with adequate thermal margin. |
Use Scenario: Converting 3.3 V logic outputs to 5 V or 12 V compatible levels for legacy peripherals or interface ICs. IC Role / Device Role / Timing Role: Active pull-down transistor enabling open-collector or wired-OR logic translation. Use Value: VCEO = 60 V and fast turn-on/turn-off characteristics allow clean edge transitions without shoot-through risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPSA06 | VCEO = 80 V, same TO-92 package and pinout; otherwise identical electrical specs including hFE, VCE(sat), and fT. | Higher breakdown voltage allows use in 60 V systems where MPSA05RLRA may approach stress limits. | Select MPSA06 when operating near 60 V supply rails or requiring additional voltage margin for transients. |
| BC547B | Lower VCEO = 45 V, hFE = 200–450 (tighter bin), but same TO-92 package and pinout; PD = 500 mW. | Higher gain enables lower base drive current but reduced voltage headroom limits use in 48 V+ systems. | Choose BC547B for low-power, high-gain analog stages where supply voltage stays ≤40 V and thermal budget is constrained. |
Compared with MPSA05RLRA, MPSA06 offers higher voltage tolerance without layout changes, while BC547B trades voltage margin for higher gain and tighter hFE distribution - both require validation of VCEO and thermal limits in the target application.
Availability
MPSA05RLRA is available at Aetrix Electronics and suitable for audio signal conditioning, relay driving, LED array control, and level translation applications requiring stable component supply and long-term industrial availability.
Supply support for MPSA05RLRA 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 management, analog, sensor, and logic devices for automotive, industrial, and consumer markets.
The MPSA05RLRA belongs to ON Semiconductor's legacy general-purpose bipolar transistor family, engineered for cost-sensitive, high-reliability linear amplification and switching in non-critical signal paths.
FAQ
What is the maximum collector-emitter voltage rating for MPSA05RLRA?
The MPSA05RLRA has a VCEO rating of 60 V, meaning it can safely sustain up to 60 volts between collector and emitter with base open. This rating is defined at TJ = 25°C and must be de-rated linearly above that temperature per the device's thermal characteristics. Exceeding 60 V risks avalanche breakdown and permanent damage to the MPSA05RLRA.
Is MPSA05RLRA pin-compatible with MPSA06?
Yes, the MPSA05RLRA and MPSA06 share identical TO-92 packaging and pinout: Emitter (pin 1), Base (pin 2), Collector (pin 3). Both devices are manufactured by ON Semiconductor using the same die process and mechanical form factor, making them drop-in replacements where voltage margin permits. Always verify VCEO requirements before substituting MPSA05RLRA for MPSA06.
What is the typical DC current gain (hFE) of MPSA05RLRA at 100 mA collector current?
The MPSA05RLRA guarantees hFE ≥ 100 at IC = 100 mA and VCE = 1.0 V, per its official datasheet specifications. This minimum value ensures predictable base drive requirements in switching and amplification designs. Actual measured hFE may exceed 150 depending on unit variation and operating conditions, but design margins should rely on the guaranteed minimum.
Can MPSA05RLRA be used in switching applications with 12 V inductive loads?
Yes, the MPSA05RLRA is routinely used to switch 12 V relay coils and solenoids. With VCE(sat) ≤ 0.25 V at IC = 100 mA and IB = 10 mA, power dissipation remains low (<25 mW), and its 60 V VCEO rating accommodates flyback spikes when paired with a properly sized freewheeling diode. Ensure base drive meets forced β = 10 for reliable saturation in all MPSA05RLRA switching implementations.
What is the thermal resistance (RθJA) of MPSA05RLRA on a standard FR-4 PCB?
The MPSA05RLRA has an RθJA of 200 °C/W when mounted on a standard FR-4 PCB (1.6 in × 1.6 in × 0.06 in). This value reflects junction-to-ambient thermal performance under natural convection and determines how much power can be safely dissipated before exceeding the 150°C maximum junction temperature. For example, at 25°C ambient, the MPSA05RLRA can dissipate up to 625 mW before reaching thermal limit - consistent with its rated PD.
MPSA05RLRA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 250mV @ 10mA, 100mA
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 1V
- Power - Max:
- 625 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92 (TO-226)
MPSA05RLRA FAQ
1.How can I place an order for MPSA05RLRA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPSA05RLRA 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 MPSA05RLRA reliable?
The price and inventory of MPSA05RLRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPSA05RLRA is usually 5 days.
3.What payment methods are accepted for MPSA05RLRA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPSA05RLRA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPSA05RLRA?
MPSA05RLRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPSA05RLRA 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 MPSA05RLRA?
For technical support, including MPSA05RLRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPSA05RLRA requirements.
6.How does Aetrix verify that MPSA05RLRA is sourced from the original manufacturer or authorized distributors?
All MPSA05RLRA 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 MPSA05RLRA meets industry standards.
7.What is the process for return or replacement of MPSA05RLRA?
All MPSA05RLRA units undergo pre-shipment inspection (PSI). If there is an issue with MPSA05RLRA, 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 MPSA05RLRA part is unused and in its original packaging.
Return procedure for MPSA05RLRA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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