Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi MPS6428RLRA

Name: MPS6428RLRA
Brand: onsemi
SKU: MPS6428RLRA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MPS6428RLRA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: MPS6428RLRA.pdf

Description:: TRANS NPN 50V 0.2A TO-92

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:80,000

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MPS6428RLRA from ON Semiconductor (formerly Motorola) is an NPN silicon small-signal transistor in TO-92 package, rated for V_CEO = 50 V, I_C = 200 mA, and P_D = 625 mW at T_A = 25°C. It delivers h_FE = 250–650 at I_C = 1–10 mA and f_T = 100–700 MHz, supporting general-purpose amplification and switching in low-power analog and digital circuits.

For engineers reviewing the MPS6428RLRA datasheet, pinout, applications, or equivalent options, key selection criteria include its TO-92 radial tape packaging (Style RLR), verified DC current gain across multiple bias points, saturation voltage under defined drive conditions, noise performance at 100 Hz/10 kHz, and thermal resistance (R_θJA = 200°C/W).

Technical Context

This NPN bipolar junction transistor operates in active, saturation, and cutoff regions with specified breakdown voltages (V_(BR)CEO = 50 V, V_(BR)CBO = 60 V) and leakage currents (I_CES ≤ 25 µA). Its small-signal parameters-including h_fe = 200–800, C_obo ≤ 3.0 pF, and C_ibo ≤ 8.0 pF-are characterized at I_C = 1.0 mA, V_CE = 5.0 V, and f = 1.0 kHz.

Noise performance is documented across three test configurations: NF ≤ 7.0 dB (R_S = 10 kΩ, BW = 1 Hz, f = 100 Hz), VT ≤ 18.1 nV (R_S = 50 kΩ, BW = 15.7 kHz, f = 10 Hz–10 kHz), and NF ≤ 3.5 dB (R_S = 500 Ω, BW = 1 Hz, f = 10 Hz). Junction temperature range spans –55°C to +150°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 Vdc - Maximum collector-emitter voltage before breakdown; defines safe operating voltage headroom in amplifier or switch stages.
I_C	200 mAdc - Continuous collector current rating; sets upper limit for load-driving capability in linear or saturated operation.
h_FE	250–650 - DC current gain at V_CE = 5 V and I_C = 1–10 mA; determines base drive requirements for predictable current amplification.
f_T	100–700 MHz - Transition frequency; indicates usable bandwidth for RF amplification or high-speed switching up to ~100 MHz.
R_θJA	200°C/W - Junction-to-ambient thermal resistance; used to calculate max power dissipation at elevated ambient temperatures.
V_CE(sat)	0.2–0.6 Vdc - Collector-emitter saturation voltage at I_C = 10–100 mA and corresponding I_B; impacts conduction loss in switching applications.
NF / VT	≤7.0 dB / ≤18.1 nV - Noise figure and total noise voltage under specified source impedances and bandwidths; critical for low-noise preamplifier design.

Pinout & Package

Package: TO-92 (Case 29–04, Style 1), plastic, through-hole, radial tape in fan fold box or reel (suffix RLR). Dimensions per JEDEC TO-226AA: 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	Current sink terminal; connected to ground or low-impedance node in common-emitter configuration.
2	Base	Control input; requires current-limited drive (typically via resistor) to bias transistor into active or saturation region.
3	Collector	Current source terminal; connects to load and supply rail; carries amplified output current in switching or amplification.

Key Features

Feature	Design Value
High DC current gain	h_FE ≥ 250 at I_C = 1 mA enables low-base-drive circuitry in battery-powered signal conditioning.
Low saturation voltage	V_CE(sat) ≤ 0.2 V at I_C = 10 mA reduces power loss and heat generation in digital logic interface or relay driver stages.
Wide transition frequency	f_T up to 700 MHz supports stable amplification in VHF receiver front-ends and oscillator designs.
Low noise performance	NF ≤ 3.5 dB with R_S = 500 Ω allows use in sensitive audio preamps and sensor signal chains without added noise degradation.
Robust thermal rating	T_J = –55°C to +150°C enables deployment in automotive under-hood and industrial control environments.

Applications

Audio Pre-amplification	General-Purpose Switching
Use Scenario: Low-level microphone or piezoelectric sensor signal amplification prior to ADC sampling. IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with emitter degeneration for linearity. Use Value: h_FE ≥ 250 ensures sufficient gain with minimal base current; NF ≤ 3.5 dB preserves signal integrity in sub-10 mV input stages.	Use Scenario: Driving LEDs, relays, or MOSFET gates from microcontroller GPIO pins. IC Role / Device Role / Timing Role: Saturated switch controlling load current with TTL/CMOS-compatible base drive. Use Value: V_CE(sat) ≤ 0.2 V at I_C = 10 mA minimizes conduction loss; I_C = 200 mA supports >10 mA LED strings or 5 V relay coils.
RF Signal Amplification	Linear Voltage Regulation
Use Scenario: Intermediate-frequency (IF) stage in AM/FM radio receivers operating at 455 kHz or 10.7 MHz. IC Role / Device Role / Timing Role: Tuned common-emitter amplifier with LC collector load and emitter bypass capacitor. Use Value: f_T ≥ 100 MHz ensures adequate gain-margin at IF frequencies; C_obo ≤ 3.0 pF limits Miller effect in tuned circuits.	Use Scenario: Pass transistor in discrete linear regulator supplying 3.3 V or 5 V to analog subsystems. IC Role / Device Role / Timing Role: Series pass element controlled by error amplifier feedback loop. Use Value: P_D = 625 mW at T_A = 25°C supports ~150 mA load at 3 V dropout; R_θJA = 200°C/W enables thermal design with minimal heatsinking.

Audio Pre-amplification

General-Purpose Switching

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

IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with emitter degeneration for linearity.

Use Value: h_FE ≥ 250 ensures sufficient gain with minimal base current; NF ≤ 3.5 dB preserves signal integrity in sub-10 mV input stages.

Use Scenario: Driving LEDs, relays, or MOSFET gates from microcontroller GPIO pins.

IC Role / Device Role / Timing Role: Saturated switch controlling load current with TTL/CMOS-compatible base drive.

Use Value: V_CE(sat) ≤ 0.2 V at I_C = 10 mA minimizes conduction loss; I_C = 200 mA supports >10 mA LED strings or 5 V relay coils.

RF Signal Amplification

Linear Voltage Regulation

Use Scenario: Intermediate-frequency (IF) stage in AM/FM radio receivers operating at 455 kHz or 10.7 MHz.

IC Role / Device Role / Timing Role: Tuned common-emitter amplifier with LC collector load and emitter bypass capacitor.

Use Value: f_T ≥ 100 MHz ensures adequate gain-margin at IF frequencies; C_obo ≤ 3.0 pF limits Miller effect in tuned circuits.

Use Scenario: Pass transistor in discrete linear regulator supplying 3.3 V or 5 V to analog subsystems.

IC Role / Device Role / Timing Role: Series pass element controlled by error amplifier feedback loop.

Use Value: P_D = 625 mW at T_A = 25°C supports ~150 mA load at 3 V dropout; R_θJA = 200°C/W enables thermal design with minimal heatsinking.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2N3904RLRA	V_CEO = 40 V (vs. 50 V); h_FE min = 100 (vs. 250); f_T = 300 MHz typical (vs. 100–700 MHz)	Lower voltage headroom and gain reduce suitability for higher-voltage amplifiers or low-drive switching.	Select when cost sensitivity outweighs need for higher V_CEO or guaranteed minimum h_FE.
BC547B	TO-92 but different pinout (E-B-C vs. E-B-C on MPS6428RLRA); h_FE = 200–450; V_CEO = 45 V	Same mechanical fit but requires PCB layout verification due to identical pin assignment-no functional incompatibility.	Choose for European supply chain alignment; verify h_FE binning meets circuit gain margin requirements.

Compared with 2N3904RLRA and BC547B, MPS6428RLRA offers superior voltage rating and guaranteed minimum DC gain, making it preferable for designs requiring robustness at 50 V operation or predictable low-current amplification without gain binning.

Availability

MPS6428RLRA is available at Aetrix Electronics and suitable for audio pre-amplification, general-purpose switching, RF signal amplification, and linear voltage regulation requiring stable component supply and long-term manufacturability.

Supply support for MPS6428RLRA 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, communications, and computing markets.

MPS6428RLRA belongs to Motorola's legacy small-signal transistor family designed for general-purpose linear amplification and switching in cost-sensitive, high-reliability consumer and industrial electronics.

FAQ

What is the maximum collector-emitter voltage rating for MPS6428RLRA?

The MPS6428RLRA has a maximum collector-emitter voltage rating (V_(BR)CEO) of 50 Vdc at I_C = 1.0 mAdc and I_B = 0. This rating defines the absolute upper limit for voltage applied between collector and emitter while maintaining device integrity in active or cutoff regions. Exceeding this value risks avalanche breakdown and permanent damage.

Does MPS6428RLRA support high-frequency amplification?

Yes, MPS6428RLRA supports high-frequency amplification with a current-gain–bandwidth product (f_T) ranging from 100 MHz to 700 MHz, measured at I_C = 1.0 mAdc, V_CE = 5.0 V, and f = 100 MHz. This makes it suitable for VHF amplifier stages, oscillator circuits, and broadband signal conditioning where gain-bandwidth trade-offs must be managed.

What is the pin configuration of MPS6428RLRA in TO-92 package?

MPS6428RLRA uses TO-92 Case 29–04 Style 1 pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. This matches standard E-B-C orientation for compatibility with existing layouts using similar NPN transistors like 2N3904. The device marking side faces outward when mounted with flat side toward viewer and leads downward.

How does the noise performance of MPS6428RLRA compare to other small-signal transistors?

MPS6428RLRA delivers low-noise operation with NF ≤ 3.5 dB (R_S = 500 Ω, BW = 1 Hz, f = 10 Hz) and VT ≤ 18.1 nV (R_S = 50 kΩ, BW = 15.7 kHz, f = 10 Hz–10 kHz). These values are competitive with industry-standard low-noise transistors and enable use in microphone preamps and sensor interfaces where signal-to-noise ratio is critical.

Is MPS6428RLRA available in tape-and-reel format?

Yes, MPS6428RLRA is supplied in radial tape format per EIA-468, packaged in fan fold boxes or on 365 mm reels with suffix "RLRA". This packaging supports automated insertion equipment and complies with TO-92 radial tape specifications including lead pitch (2.4–2.8 mm), feedhole dimensions, and adhesion pull-test requirements (≥500 g body pull force).

MPS6428RLRA Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 200 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 600mV @ 5mA, 100mA

Current - Collector Cutoff (Max):: 25nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 250 @ 10mA, 5V

Power - Max:: 625 mW

Frequency - Transition:: 700MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92

MPS6428RLRA FAQ

1.How can I place an order for MPS6428RLRA through Aetrix?

Please submit a Request for Quotation (RFQ) for MPS6428RLRA 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 MPS6428RLRA reliable?

The price and inventory of MPS6428RLRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPS6428RLRA is usually 5 days.

3.What payment methods are accepted for MPS6428RLRA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPS6428RLRA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPS6428RLRA?

MPS6428RLRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPS6428RLRA 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 MPS6428RLRA?

For technical support, including MPS6428RLRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPS6428RLRA requirements.

6.How does Aetrix verify that MPS6428RLRA is sourced from the original manufacturer or authorized distributors?

All MPS6428RLRA 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 MPS6428RLRA meets industry standards.

7.What is the process for return or replacement of MPS6428RLRA?

All MPS6428RLRA units undergo pre-shipment inspection (PSI). If there is an issue with MPS6428RLRA, 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 MPS6428RLRA part is unused and in its original packaging.

Return procedure for MPS6428RLRA:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…