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

onsemi MPS8599RLRA

Name: MPS8599RLRA
Brand: onsemi
SKU: MPS8599RLRA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPS8599RLRA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: -

Datasheet:: MPS8599RLRA.pdf

Description:: TRANS PNP SS GP 80V TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MPS8599RLRA from onsemi is a PNP bipolar junction transistor (BJT) designed for general-purpose amplification and switching in low-to-medium power circuits, with V_CEO = −80 V, I_C = −500 mA, and f_T = 150 MHz at I_C = 10 mA - used in audio preamplifiers, relay drivers, and discrete logic-level translators.

For engineers reviewing the MPS8599RLRA datasheet, pinout, applications, or equivalent options, this device is evaluated for linear gain stability across −55°C to +150°C, saturation voltage performance under I_C/I_B = 10, and safe operating area compliance in TO-92-packaged discrete designs.

Technical Context

This PNP transistor operates with negative-polarity voltage and current ratings: V_CEO = −80 V, V_CB0 = −80 V, and V_EB0 = −4.0 V. Its DC current gain (h_FE) ranges from 75 to 300 depending on collector current (1–100 mA), and it delivers f_T = 150 MHz at I_C = 10 mA, V_CE = −5.0 V.

Thermal resistance is R_JA = 200°C/W (PCB-mounted) and R_JC = 83.3°C/W. Switching times include t_r ≤ 30 ns, t_f ≤ 200 ns (V_CC = −40 V, I_C/I_B = 10), supporting medium-speed digital and analog signal control.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−80 V - Maximum reverse-biased collector-emitter voltage before breakdown; defines high-side switch headroom in negative-rail systems.
I_C (continuous)	−500 mA - Continuous collector current rating; supports load switching up to ~400 mA with derating above 25°C ambient.
h_FE @ I_C = 10 mA	100–300 - DC current gain range at mid-current; enables stable bias design for Class-A amplifiers and saturated switches.
f_T	150 MHz - Unity-gain frequency at I_C = 10 mA; suitable for RF predriver stages and broadband analog signal paths up to ~50 MHz.
V_CE(sat) @ I_C = 100 mA	≤ 0.3 V - Low saturation voltage at high drive; minimizes conduction loss in power-switching applications like LED or relay control.
P_D @ T_A = 25°C	625 mW - Total dissipation limit on PCB; requires thermal layout consideration for >200 mW continuous operation.
C_obo	≤ 8.0 pF - Output capacitance at V_CB = −5 V; contributes to bandwidth limitation and Miller effect in high-frequency amplifiers.

Pinout & Package

Package: TO-92 (Case 29-11), straight or bent lead, epoxy-molded plastic housing with 3-terminal through-hole mounting. Dimensions comply with JEDEC TO-226 standard (A = 4.45–5.20 mm, B = 4.32–5.33 mm, C = 3.18–4.19 mm).

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Emitter terminal (PNP)	Reference node for base-emitter junction; connected to most positive rail in PNP common-emitter configurations.
2 (Base)	Control input	Current-controlled gate; requires ~5–10 mA drive for full saturation at I_C = 100 mA (I_C/I_B = 10).
3 (Collector)	Output current sink	Carries load current toward negative supply; placed at circuit ground or negative rail in typical PNP switch topologies.

Key Features

Feature	Design Value
High V_CEO rating	−80 V enables use in industrial 24/48 VDC control systems without additional voltage clamping.
Low V_CE(sat)	≤ 0.3 V at I_C = 100 mA reduces power loss and self-heating in relay and solenoid driver stages.
Wide temperature range	−55°C to +150°C junction operation supports automotive under-hood and industrial motor-control environments.
150 MHz f_T	Supports stable small-signal amplification up to VHF band; usable in IF amplifier and oscillator buffer roles.
Pb-free packaging option	RLRAG variant available; MPS8599RLRA itself is standard Pb-bearing TO-92, compatible with legacy reflow profiles.

Applications

Audio Preamp Stage	Relay Driver Circuit
Use Scenario: Discrete two-stage PNP-NPN complementary preamplifier in battery-powered portable audio equipment. IC Role / Device Role / Timing Role: PNP small-signal amplifier providing inverted gain with low noise and matched h_FE tracking. Use Value: Delivers 30 dB voltage gain with <1% THD at 1 kHz using V_CE = −5 V bias, leveraging h_FE ≥ 100 stability across production lots.	Use Scenario: Driving 12 VDC, 80 mA coil relays from microcontroller GPIO pins with open-collector interface. IC Role / Device Role / Timing Role: Saturated PNP switch sinking relay coil current to ground when base is pulled low. Use Value: Achieves <0.3 V drop at full load, limiting relay power dissipation to <24 mW and enabling direct MCU-level control without level-shifting.
Logic Level Translator	Current Mirror Reference
Use Scenario: Bidirectional 3.3 V ↔ 5 V logic translation in mixed-voltage embedded systems with pull-up resistors. IC Role / Device Role / Timing Role: PNP emitter-follower configured as active-low level shifter with fast turn-off via base resistor network. Use Value: Supports >1 MHz edge rates with t_f ≤ 200 ns, maintaining signal integrity while isolating voltage domains.	Use Scenario: Precision current mirror leg in analog sensor signal conditioning circuits requiring matched h_FE and thermal tracking. IC Role / Device Role / Timing Role: Reference transistor in Wilson or Widlar mirror topology, biased at I_C = 1 mA for low drift. Use Value: h_FE variation <±5% across −40°C to +85°C ensures <0.5% mirror ratio error in temperature-stable instrumentation front-ends.

Audio Preamp Stage

Relay Driver Circuit

Use Scenario: Discrete two-stage PNP-NPN complementary preamplifier in battery-powered portable audio equipment.

IC Role / Device Role / Timing Role: PNP small-signal amplifier providing inverted gain with low noise and matched h_FE tracking.

Use Value: Delivers 30 dB voltage gain with <1% THD at 1 kHz using V_CE = −5 V bias, leveraging h_FE ≥ 100 stability across production lots.

Use Scenario: Driving 12 VDC, 80 mA coil relays from microcontroller GPIO pins with open-collector interface.

IC Role / Device Role / Timing Role: Saturated PNP switch sinking relay coil current to ground when base is pulled low.

Use Value: Achieves <0.3 V drop at full load, limiting relay power dissipation to <24 mW and enabling direct MCU-level control without level-shifting.

Logic Level Translator

Current Mirror Reference

Use Scenario: Bidirectional 3.3 V ↔ 5 V logic translation in mixed-voltage embedded systems with pull-up resistors.

IC Role / Device Role / Timing Role: PNP emitter-follower configured as active-low level shifter with fast turn-off via base resistor network.

Use Value: Supports >1 MHz edge rates with t_f ≤ 200 ns, maintaining signal integrity while isolating voltage domains.

Use Scenario: Precision current mirror leg in analog sensor signal conditioning circuits requiring matched h_FE and thermal tracking.

IC Role / Device Role / Timing Role: Reference transistor in Wilson or Widlar mirror topology, biased at I_C = 1 mA for low drift.

Use Value: h_FE variation <±5% across −40°C to +85°C ensures <0.5% mirror ratio error in temperature-stable instrumentation front-ends.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC857B,115 (Nexperia)	SMD SOT-23 package; h_FE = 200–450 @ I_C = 10 mA; V_CEO = −45 V; f_T = 100 MHz.	Limited to ≤45 V systems; unsuitable for 48 V industrial rails but ideal for space-constrained PCBs.	Select when board area is critical and voltage requirements are ≤45 V; requires re-layout due to SMT footprint.
2N3906 (ON Semiconductor)	Same TO-92 package; V_CEO = −40 V; I_C = −200 mA; h_FE = 100–300; f_T ≈ 250 MHz.	Lower voltage/current rating; higher f_T but reduced SOA - not interchangeable in 80 V or 500 mA designs.	Use only in low-power, ≤40 V circuits where gain-bandwidth priority outweighs voltage headroom needs.

Compared with BC857B,115 and 2N3906, MPS8599RLRA offers superior voltage margin (−80 V) and current capacity (−500 mA) in through-hole form, making it uniquely suited for ruggedized 24/48 VDC industrial switching where thermal robustness and legacy compatibility are required.

Availability

MPS8599RLRA is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and legacy replacement programs requiring stable component supply and long-term TO-92 availability.

Supply support for MPS8599RLRA 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 innovation for automotive, industrial, cloud, medical, and IoT applications.

MPS8599RLRA belongs to onsemi's legacy discrete transistor portfolio, engineered for reliability in cost-sensitive, high-volume linear and switching applications where proven TO-92 performance and wide SOA are essential.

FAQ

What is the maximum collector-emitter voltage rating for MPS8599RLRA?

The MPS8599RLRA has a maximum collector-emitter voltage rating of −80 V (V_CEO). This rating applies under DC conditions with base open, and defines the upper limit for reverse-biased operation in PNP configurations. Exceeding this voltage risks avalanche breakdown and permanent device damage, especially at elevated temperatures.

Does MPS8599RLRA support operation at high ambient temperatures?

Yes, MPS8599RLRA is rated for junction temperatures from −55°C to +150°C. Its thermal resistance R_JA = 200°C/W (on standard PCB) allows operation up to +85°C ambient at ≤300 mW dissipation. For sustained 500 mA loads, heatsinking or forced-air cooling is recommended to maintain TJ < 125°C per SOA curves.

Is MPS8599RLRA pin-compatible with other TO-92 PNP transistors like 2N3906?

No, MPS8599RLRA is not pin-compatible with 2N3906 despite sharing the TO-92 package. The pinout is identical (Emitter-Base-Collector, Pin 1–2–3), but electrical specifications differ significantly: MPS8599RLRA supports −80 V V_CEO and −500 mA I_C, whereas 2N3906 is limited to −40 V and −200 mA. Direct substitution may cause overvoltage or overcurrent failure.

What is the typical DC current gain (h_FE) of MPS8599RLRA at 10 mA collector current?

The typical DC current gain (h_FE) of MPS8599RLRA at I_C = 10 mA and V_CE = −5.0 V is 100–300. This range reflects production lot variation and ensures predictable biasing in amplifier and switch designs. Designers should verify minimum h_FE = 100 for worst-case saturation analysis.

Can MPS8599RLRA be used in RF amplifier stages?

Yes, MPS8599RLRA can be used in low-power RF amplifier stages up to ~50 MHz. Its f_T = 150 MHz at I_C = 10 mA and C_obo ≤ 8.0 pF support stable small-signal gain in VHF front-ends, though it is not optimized for narrowband matching or ultra-low noise. For >100 MHz applications, dedicated RF transistors are preferred.

MPS8599RLRA 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:: -

MPS8599RLRA FAQ

1.How can I place an order for MPS8599RLRA through Aetrix?

Please submit a Request for Quotation (RFQ) for MPS8599RLRA 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 MPS8599RLRA reliable?

The price and inventory of MPS8599RLRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPS8599RLRA is usually 5 days.

3.What payment methods are accepted for MPS8599RLRA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPS8599RLRA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPS8599RLRA?

MPS8599RLRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPS8599RLRA 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 MPS8599RLRA?

For technical support, including MPS8599RLRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPS8599RLRA requirements.

6.How does Aetrix verify that MPS8599RLRA is sourced from the original manufacturer or authorized distributors?

All MPS8599RLRA 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 MPS8599RLRA meets industry standards.

7.What is the process for return or replacement of MPS8599RLRA?

All MPS8599RLRA units undergo pre-shipment inspection (PSI). If there is an issue with MPS8599RLRA, 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 MPS8599RLRA part is unused and in its original packaging.

Return procedure for MPS8599RLRA:

1.Submit a request within 90 days.

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

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