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

onsemi 2N5088

Name: 2N5088
Brand: onsemi
SKU: 2N5088
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N5088

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: 2N5088.pdf

Description:: TRANS NPN 30V 0.05A TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2N5088 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 P_D = 625 mW at T_A = 25°C, with h_FE ≥ 300 (I_C = 10 mA, V_CE = 5 V), f_T = 50 MHz, and low noise figure of 3.0 dB - used in high-gain audio preamplifier stages and RF front-end amplification.

For engineers reviewing the 2N5088 datasheet, pinout, applications, or equivalent options, key selection criteria include its guaranteed minimum h_FE, low-noise performance at 1 kHz, V_BE(on) ≤ 0.8 V, thermal resistance R_JA = 200 °C/W, and Pb-free TO-92 packaging compliance.

Technical Context

The 2N5088 operates as a linear NPN bipolar junction transistor optimized for low-noise, medium-frequency amplification. Its design supports DC-coupled gain stages with h_FE ranging 300–900 across I_C = 1–10 mA and maintains stable f_T = 50 MHz at I_C = 500 µA, V_CE = 5 V.

It features low C_cb = 4.0 pF and C_eb = 10 pF at specified bias conditions, enabling use in tuned RF amplifiers up to ~30 MHz. Junction temperature range spans −55°C to +150°C, with derating applied above 25°C ambient per 5.0 mW/°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - Maximum collector-emitter voltage before breakdown; sets upper rail limit for single-supply amplifier designs.
I_C	50 mA - Continuous collector current rating; defines maximum signal swing capability in Class-A stages.
h_FE (min)	300 @ I_C = 10 mA, V_CE = 5 V - Ensures predictable DC bias stability and gain consistency in discrete amplifier topologies.
f_T	50 MHz - Current-gain bandwidth product; supports small-signal amplification up to mid-VHF range with usable gain.
NF	3.0 dB @ I_C = 100 µA, R_S = 1 kΩ, f = 1 kHz - Quantifies inherent noise contribution; critical for microphone preamp and sensor interface circuits.
R_JA	200 °C/W - Thermal resistance junction-to-ambient; determines required PCB copper area or heatsinking for sustained operation.

Pinout & Package

Package: TO-92 (Case 29, Style 1), Pb-free, through-hole mounting. Standard lead configuration with Emitter (Pin 1), Base (Pin 2), Collector (Pin 3).

Pin/Terminal	Circuit Role	Design Meaning
1 - Emitter	Current output terminal	Reference node for bias network; connects to ground or emitter degeneration resistor in common-emitter configurations.
2 - Base	Control input terminal	Receives base drive current; requires impedance-matched source to minimize noise injection and ensure h_FE-dependent bias accuracy.
3 - Collector	Current input terminal	Connects to supply rail via load resistor or active load; carries amplified signal current to next stage or output coupling capacitor.

Key Features

Feature	Design Value
Low-noise amplification	NF = 3.0 dB at 1 kHz enables high-fidelity audio preamplification without requiring complex noise-canceling circuitry.
High DC current gain	h_FE ≥ 300 ensures stable bias point with minimal base current error in resistor-divider or emitter-follower configurations.
Medium-frequency response	f_T = 50 MHz supports broadband signal amplification in IF stages and low-power RF receiver front ends.
Pb-free TO-92 packaging	Complies with RoHS Directive 2011/65/EU; compatible with standard wave-solder and hand-solder reflow profiles.

Applications

Audio Preamp Stage	RF Signal Amplifier
Use Scenario: Low-level microphone or piezoelectric sensor signal amplification prior to ADC or tone control. IC Role / Device Role / Timing Role: Discrete NPN transconductance amplifier operating in common-emitter mode with emitter degeneration. Use Value: Delivers >40 dB voltage gain with <3 dB noise penalty at 1 kHz, avoiding op-amp input-stage limitations in ultra-low-power designs.	Use Scenario: Intermediate-frequency (IF) amplification in AM/FM radio receivers or wireless telemetry modules. IC Role / Device Role / Timing Role: Small-signal RF amplifier biased in Class-A for linearity, tuned with parallel LC networks. Use Value: Maintains 50 MHz f_T and low C_cb/C_eb to preserve Q-factor in 1–30 MHz bandpass filters without neutralization.
Instrumentation Front End	Discrete Logic Interface
Use Scenario: High-impedance sensor buffer in portable medical or environmental monitoring equipment. IC Role / Device Role / Timing Role: Emitter-follower configured for unity-gain buffering with low output impedance and wide bandwidth. Use Value: Provides Z_out < 50 Ω and bandwidth >10 MHz while drawing <1 mA quiescent current - extends battery life vs. rail-to-rail op-amps.	Use Scenario: Level-shifting and current boosting between microcontroller GPIO and higher-current loads (e.g., LEDs, relays). IC Role / Device Role / Timing Role: Switch-mode NPN driver with forced β = 10 to ensure saturation under varying V_CC and temperature. Use Value: V_CE(sat) ≤ 0.5 V at I_C/I_B = 10 guarantees efficient switching and minimal power loss in digital interface applications.

Audio Preamp Stage

RF Signal Amplifier

Use Scenario: Low-level microphone or piezoelectric sensor signal amplification prior to ADC or tone control.

IC Role / Device Role / Timing Role: Discrete NPN transconductance amplifier operating in common-emitter mode with emitter degeneration.

Use Value: Delivers >40 dB voltage gain with <3 dB noise penalty at 1 kHz, avoiding op-amp input-stage limitations in ultra-low-power designs.

Use Scenario: Intermediate-frequency (IF) amplification in AM/FM radio receivers or wireless telemetry modules.

IC Role / Device Role / Timing Role: Small-signal RF amplifier biased in Class-A for linearity, tuned with parallel LC networks.

Use Value: Maintains 50 MHz f_T and low C_cb/C_eb to preserve Q-factor in 1–30 MHz bandpass filters without neutralization.

Instrumentation Front End

Discrete Logic Interface

Use Scenario: High-impedance sensor buffer in portable medical or environmental monitoring equipment.

IC Role / Device Role / Timing Role: Emitter-follower configured for unity-gain buffering with low output impedance and wide bandwidth.

Use Value: Provides Z_out < 50 Ω and bandwidth >10 MHz while drawing <1 mA quiescent current - extends battery life vs. rail-to-rail op-amps.

Use Scenario: Level-shifting and current boosting between microcontroller GPIO and higher-current loads (e.g., LEDs, relays).

IC Role / Device Role / Timing Role: Switch-mode NPN driver with forced β = 10 to ensure saturation under varying V_CC and temperature.

Use Value: V_CE(sat) ≤ 0.5 V at I_C/I_B = 10 guarantees efficient switching and minimal power loss in digital interface applications.

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
2N5089	V_CEO = 25 V (vs. 30 V), h_FE min = 400 @ I_C = 1 mA, NF = 2.0 dB - slightly lower noise but reduced voltage headroom.	Preferred where supply rails ≤ 24 V and ultra-low-noise at microamp bias is prioritized over voltage margin.	Select 2N5089 only if V_CC ≤ 24 V and noise floor below 2.5 dB is required; otherwise 2N5088 offers broader dynamic range.
BC547B	h_FE = 200–450 (wider spread), V_CEO = 45 V, f_T = 300 MHz - higher voltage rating and bandwidth but no guaranteed NF spec.	Better suited for general-purpose switching or wideband amplification where noise is secondary to speed or voltage tolerance.	Choose BC547B when V_CEO > 30 V or f_T > 100 MHz is needed; avoid when low-noise audio performance must be assured.

Compared with 2N5089 and BC547B, the 2N5088 uniquely balances guaranteed high h_FE, low-noise operation at 1 kHz, and 30 V voltage rating - making it optimal for precision analog front ends where both gain stability and noise performance are simultaneously constrained.

Availability

2N5088 is available at Aetrix Electronics and suitable for audio preamplifier stages, RF intermediate-frequency amplifiers, and instrumentation front-end circuits requiring stable component supply, consistent h_FE binning, and RoHS-compliant through-hole packaging.

Supply support for 2N5088 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 manufacturer specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The 2N5088 belongs to onsemi's legacy discrete bipolar transistor family designed specifically for high-reliability, low-noise analog signal conditioning in cost-sensitive consumer and industrial electronics.

FAQ

What is the maximum collector-emitter voltage rating for the 2N5088?

The 2N5088 has a guaranteed minimum V_CEO rating of 30 Vdc at I_C = 1.0 mA and T_A = 25°C. This rating defines the absolute maximum voltage that can be applied between collector and emitter with base open before avalanche breakdown occurs. Exceeding this value risks permanent device degradation. The 2N5088 must not be used in circuits where transient or steady-state V_CE exceeds 30 V without additional clamping or derating.

Does the 2N5088 have a specified noise figure, and under what conditions?

Yes, the 2N5088 has a specified noise figure of 3.0 dB, measured at I_C = 100 µA, V_CE = 5.0 Vdc, R_S = 1.0 kΩ, and f = 1.0 kHz. This value reflects the transistor's intrinsic noise contribution relative to thermal noise of the source resistance. It is validated per the onsemi 2N5088/D datasheet Rev. 3 and applies directly to the 2N5088 - not extrapolated from the 2N5089 variant.

What is the pin configuration of the 2N5088 in its TO-92 package?

The 2N5088 uses standard TO-92 (Case 29, Style 1) pinout: Pin 1 is Emitter, Pin 2 is Base, and Pin 3 is Collector - viewed from the flat side with leads pointing downward and left-to-right numbering. This configuration is confirmed in the official onsemi marking diagram and package dimensions document for 2N5088RLRAG. No alternate pinouts exist for this part number.

Is the 2N5088 available in Pb-free packaging, and how is it marked?

Yes, the 2N5088RLRAG variant is explicitly designated as Pb-free per onsemi documentation. It carries the "G" suffix and is marked "2N5088" on the package body. The "RLRAG" ordering code indicates tape-and-reel packaging (2000 units), Pb-free finish, and assembly location/year/week traceability - all verified in the official ON Semiconductor ordering information table.

How does the 2N5088's f_T specification impact its usable frequency range?

The 2N5088 has a minimum f_T of 50 MHz at I_C = 500 µA, V_CE = 5.0 Vdc, and f = 20 MHz. This means usable small-signal voltage gain begins to roll off significantly above ~5–10 MHz in practical common-emitter configurations. For stable amplification with ≥10 dB gain, design should target frequencies ≤ 5 MHz; for broadband RF applications up to 30 MHz, careful impedance matching and neutralization may be required. The 2N5088 is not intended for UHF or microwave use.

2N5088 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 Long Body

Packaging:: Bulk

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)

2N5088 FAQ

1.How can I place an order for 2N5088 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N5088 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 2N5088 reliable?

The price and inventory of 2N5088 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N5088 is usually 5 days.

3.What payment methods are accepted for 2N5088?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N5088 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N5088?

2N5088 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N5088 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 2N5088?

For technical support, including 2N5088 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N5088 requirements.

6.How does Aetrix verify that 2N5088 is sourced from the original manufacturer or authorized distributors?

All 2N5088 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 2N5088 meets industry standards.

7.What is the process for return or replacement of 2N5088?

All 2N5088 units undergo pre-shipment inspection (PSI). If there is an issue with 2N5088, 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 2N5088 part is unused and in its original packaging.

Return procedure for 2N5088:

1.Submit a request within 90 days.

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

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