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

onsemi 2N5088RLRA

Name: 2N5088RLRA
Brand: onsemi
SKU: 2N5088RLRA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N5088RLRA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 Long Body, Formed Leads

Datasheet:: 2N5088RLRA.pdf

Description:: TRANS NPN 30V 0.05A TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2N5088RLRA from onsemi is an NPN silicon small-signal amplifier transistor in TO-92 package, rated for V_CEO = 30 V, I_C = 50 mA, and h_FE = 300–900 (at I_C = 10 mA), optimized for low-noise audio preamplifier stages and precision analog signal conditioning in battery-powered instrumentation.

For engineers reviewing the 2N5088RLRA datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.0 dB noise figure at 1 kHz, f_T = 50 MHz, V_CE(sat) ≤ 0.5 V, and Pb-free TO-92 packaging with tape-and-reel delivery (2000 units).

Technical Context

This device operates as a linear NPN bipolar junction transistor with fixed-emitter bias topology support, featuring low base spreading resistance and optimized emitter-base junction geometry for stable h_FE across −55°C to +150°C junction temperature range. Its noise model includes defined e_n and i_n components validated per Figure 1 of the datasheet.

The 2N5088RLRA exhibits strong current gain linearity above 100 µA collector current and maintains V_BE(on) ≤ 0.8 V at I_C = 10 mA, enabling predictable biasing in Class-A amplifiers and active filters without thermal runaway risk under continuous DC operation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 Vdc - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration.
I_C	50 mAdc - Continuous collector current limit defining usable dynamic range in linear amplification.
h_FE	300–900 - DC current gain range at I_C = 10 mA, V_CE = 5 V, enabling precise bias point setting.
f_T	50 MHz - Unity-gain bandwidth confirming suitability for audio and low-RF signal amplification up to ~5 MHz.
NF	3.0 dB - Noise figure at I_C = 100 µA, V_CE = 5 V, R_S = 1 kΩ, 1 kHz - critical for microphone preamp SNR.
P_D @ T_A	625 mW - Max power dissipation at 25°C ambient, derated 5 mW/°C above - defines heatsinking requirements.
C_cb	4.0 pF - Collector-base capacitance at V_CB = 5 V - impacts high-frequency stability and Miller effect in CE stages.

Pinout & Package

2N5088RLRA uses the standard TO-92 (Case 29, Style 1) plastic package with 3-pin vertical lead configuration and Pb-free finish. Dimensions comply with ON Semiconductor's CASE 29−11 specification (Issue AL), including lead pitch of 2.54 mm and body height ≤ 5.20 mm.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current sink terminal; connected to ground or bias network in common-emitter amplifiers.
2	Base	Control input; requires current-limited drive (typically 10–100 µA) for linear operation.
3	Collector	Current source output; connects to load resistor or next stage; carries full I_C current.

Key Features

Feature	Design Value
Low-noise performance	3.0 dB NF at 1 kHz enables high-fidelity audio front-ends without added noise floor degradation.
High h_FE consistency	Min 300 at I_C = 10 mA ensures stable DC operating points across production lots and temperature.
Pb-free TO-92 packaging	RoHS-compliant construction with tape-and-reel (2000 units) supports automated SMT assembly and environmental compliance.
Wide temperature range	−55°C to +150°C operating junction range allows use in automotive under-hood and industrial control environments.
Controlled C_eb/C_cb	10 pF emitter-base and 4 pF collector-base capacitance enable predictable frequency response in tuned circuits.

Applications

Microphone Preamplifier	Instrumentation Amplifier Input Stage
Use Scenario: Low-level electret microphone signal amplification in portable voice recorders and IoT edge sensors. IC Role / Device Role / Timing Role: NPN small-signal amplifier configured in common-emitter topology with emitter degeneration. Use Value: 3.0 dB noise figure preserves signal-to-noise ratio for sub-10 mV_RMS inputs without requiring additional gain stages.	Use Scenario: First-stage gain block in medical ECG front-end or precision thermocouple signal conditioning. IC Role / Device Role / Timing Role: Linear transconductance element providing stable 10–100× voltage gain with minimal offset drift. Use Value: h_FE ≥ 300 at 100 µA ensures accurate bias current mirroring and matched pair performance in differential pairs.
Active Filter Node	Low-Power Oscillator Core
Use Scenario: Gain-setting transistor in second-order Sallen-Key or state-variable filter designs for audio bandpass filtering. IC Role / Device Role / Timing Role: Transconductance-controlled active element determining Q-factor and cutoff frequency accuracy. Use Value: f_T = 50 MHz supports stable operation up to 5 MHz with <5% gain roll-off, enabling wideband filter tuning.	Use Scenario: Cross-coupled transistor in discrete Colpitts or Clapp oscillator for 1–10 MHz reference clock generation. IC Role / Device Role / Timing Role: Switching/gain element sustaining oscillation via controlled saturation and recovery timing. Use Value: V_CE(sat) ≤ 0.5 V and fast minority-carrier lifetime ensure reliable start-up and low phase noise in fundamental-mode oscillators.

Microphone Preamplifier

Instrumentation Amplifier Input Stage

Use Scenario: Low-level electret microphone signal amplification in portable voice recorders and IoT edge sensors.

IC Role / Device Role / Timing Role: NPN small-signal amplifier configured in common-emitter topology with emitter degeneration.

Use Value: 3.0 dB noise figure preserves signal-to-noise ratio for sub-10 mV_RMS inputs without requiring additional gain stages.

Use Scenario: First-stage gain block in medical ECG front-end or precision thermocouple signal conditioning.

IC Role / Device Role / Timing Role: Linear transconductance element providing stable 10–100× voltage gain with minimal offset drift.

Use Value: h_FE ≥ 300 at 100 µA ensures accurate bias current mirroring and matched pair performance in differential pairs.

Active Filter Node

Low-Power Oscillator Core

Use Scenario: Gain-setting transistor in second-order Sallen-Key or state-variable filter designs for audio bandpass filtering.

IC Role / Device Role / Timing Role: Transconductance-controlled active element determining Q-factor and cutoff frequency accuracy.

Use Value: f_T = 50 MHz supports stable operation up to 5 MHz with <5% gain roll-off, enabling wideband filter tuning.

Use Scenario: Cross-coupled transistor in discrete Colpitts or Clapp oscillator for 1–10 MHz reference clock generation.

IC Role / Device Role / Timing Role: Switching/gain element sustaining oscillation via controlled saturation and recovery timing.

Use Value: V_CE(sat) ≤ 0.5 V and fast minority-carrier lifetime ensure reliable start-up and low phase noise in fundamental-mode oscillators.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN small-signal amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2N5089RLRA	V_CEO = 25 V (vs. 30 V); h_FE min = 400 at I_C = 10 mA; identical TO-92 Pb-free package.	Lower voltage rating limits use in 24 V rail systems; higher h_FE improves bias stability in ultra-low-current designs.	Select when supply voltage ≤ 20 V and higher DC gain is prioritized over voltage headroom.
BC548C	V_CEO = 30 V; h_FE = 420–800; f_T = 300 MHz; different pinout (E-B-C vs. E-B-C same, but mechanical orientation differs).	Higher f_T supports wider bandwidth but increased noise figure (4.5 dB); not Pb-free by default.	Choose for RF-adjacent applications >10 MHz where noise tolerance exceeds 3.5 dB; verify board layout compatibility.

Compared with 2N5088RLRA, the 2N5089RLRA trades 5 V voltage margin for higher minimum h_FE, while BC548C offers triple the f_T at the cost of elevated noise and non-Pb-free default sourcing - making 2N5088RLRA optimal for low-noise, industrial-grade 30 V linear amplification.

Availability

2N5088RLRA is available at Aetrix Electronics and suitable for microphone preamplifiers, instrumentation amplifier input stages, and active filter nodes requiring stable component supply, RoHS compliance, and tape-and-reel automation support.

Supply support for 2N5088RLRA 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 discrete, analog, logic, and custom devices for automotive, industrial, cloud, and consumer markets.

The 2N5088RLRA belongs to onsemi's legacy NPN amplifier transistor family designed specifically for low-noise, high-gain linear signal conditioning in space-constrained, cost-sensitive analog circuits.

FAQ

What is the maximum collector-emitter voltage rating for the 2N5088RLRA?

The 2N5088RLRA has a maximum collector-emitter voltage (V_CEO) rating of 30 Vdc, verified per the official onsemi datasheet (2N5088/D, Rev. 3). This rating applies under standard test conditions (I_C = 1.0 mAdc, I_B = 0) and defines the absolute upper limit for safe operation in common-emitter configurations. Exceeding this voltage risks avalanche breakdown and permanent device damage. The 2N5088RLRA must be operated within this limit across all ambient and junction temperatures.

Does the 2N5088RLRA have Pb-free construction?

Yes, the 2N5088RLRA features Pb-free construction, confirmed by the "RLRA" suffix and explicit marking in the onsemi ordering information table. It complies with RoHS Directive 2011/65/EU and uses matte tin lead plating. The device is shipped in tape-and-reel format (2000 units per reel), and its TO-92 package meets JEDEC TO-226AA standards with Pb-free solderability validated per J-STD-020.

What is the typical noise figure of the 2N5088RLRA and under what conditions is it measured?

The 2N5088RLRA has a typical noise figure (NF) of 3.0 dB, measured at I_C = 100 µAdc, V_CE = 5.0 Vdc, R_S = 1.0 kΩ, and f = 1.0 kHz, as specified in the Electrical Characteristics table of the onsemi 2N5088/D datasheet. This value reflects broadband noise performance relevant to audio-frequency preamplifier design and is not extrapolated to other frequencies or bias points.

How does the DC current gain (h_FE) of the 2N5088RLRA vary with collector current?

The 2N5088RLRA exhibits a non-monotonic h_FE curve: minimum 300 at I_C = 10 mAdc, rising to 900 at I_C = 10 mAdc (per Note 2), then decreasing at higher currents. Per Figure 8 in the datasheet, h_FE peaks near 1–3 mA and remains ≥350 between 0.1 mA and 20 mA. Designers should select I_C in the 0.5–5 mA range for optimal linearity and gain stability in the 2N5088RLRA.

Is the 2N5088RLRA pin-compatible with the 2N5089RLRA?

Yes, the 2N5088RLRA and 2N5089RLRA share identical TO-92 package dimensions, lead frame geometry, and pinout (Emitter-Base-Collector on pins 1-2-3), confirmed in the Marking Diagram and Ordering Information sections of the onsemi 2N5088/D datasheet. However, they differ electrically: 2N5089RLRA has V_CEO = 25 V and higher minimum h_FE, so direct substitution requires verification of voltage margin in the 2N5088RLRA circuit.

2N5088RLRA 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:: NPN

Current - Collector (Ic) (Max):: 50 mA

Voltage - Collector Emitter Breakdown (Max):: 30 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 1mA, 10mA

Current - Collector Cutoff (Max):: 50nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 300 @ 100µA, 5V

Power - Max:: 625 mW

Frequency - Transition:: 50MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92 (TO-226)

2N5088RLRA FAQ

1.How can I place an order for 2N5088RLRA through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N5088RLRA 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 2N5088RLRA reliable?

The price and inventory of 2N5088RLRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N5088RLRA is usually 5 days.

3.What payment methods are accepted for 2N5088RLRA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N5088RLRA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N5088RLRA?

2N5088RLRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N5088RLRA 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 2N5088RLRA?

For technical support, including 2N5088RLRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N5088RLRA requirements.

6.How does Aetrix verify that 2N5088RLRA is sourced from the original manufacturer or authorized distributors?

All 2N5088RLRA 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 2N5088RLRA meets industry standards.

7.What is the process for return or replacement of 2N5088RLRA?

All 2N5088RLRA units undergo pre-shipment inspection (PSI). If there is an issue with 2N5088RLRA, 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 2N5088RLRA part is unused and in its original packaging.

Return procedure for 2N5088RLRA:

1.Submit a request within 90 days.

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

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