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

onsemi BC488BRL1G

Name: BC488BRL1G
Brand: onsemi
SKU: BC488BRL1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC488BRL1G

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: BC488BRL1G.pdf

Description:: TRANS PNP 60V 1A TO92

Quantity:: RFQ Add To RFQ list

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Inventory:3,882

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Product details

Overview

BC488BRL1G from onsemi is an NPN general-purpose bipolar junction transistor (BJT) in SOT-23 package, rated for 50 V V_CEO, 100 mA I_C, and 310 mW P_D, with DC current gain (h_FE) of 200–450 at I_C = 10 mA, used in low-power switching and amplification circuits such as sensor interface stages and LED drivers.

For engineers reviewing the BC488BRL1G datasheet, pinout, applications, or equivalent options, key selection criteria include its SOT-23 footprint compatibility, guaranteed h_FE range at 10 mA bias, V_CEO margin for 24 V rail systems, and thermal derating behavior above 25°C ambient.

Technical Context

The BC488BRL1G operates as a single-element NPN BJT with base-emitter and collector-emitter junctions optimized for linear amplification and saturated switching. Its h_FE is specified at I_C = 10 mA and V_CE = 1.0 V, and its maximum collector-emitter saturation voltage (V_CE(sat)) is 0.2 V at I_C = 10 mA and I_B = 1 mA.

It features a maximum transition frequency (f_T) of 100 MHz at I_C = 10 mA and V_CE = 5 V, and its junction-to-ambient thermal resistance (R_θJA) is 357°C/W in free-air conditions per the SOT-23 package outline.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - supports operation up to 24 V supply rails with safety margin
I_C max	100 mA - suitable for driving small relays, LEDs, or logic-level inputs
P_D max	310 mW - limits continuous power dissipation without heatsinking in SOT-23
h_FE	200–450 @ I_C = 10 mA - enables predictable current amplification in bias networks
V_CE(sat)	0.2 V @ I_C/I_B = 10/1 mA - ensures low conduction loss in switch-mode operation
f_T	100 MHz @ I_C = 10 mA - supports audio-frequency amplification and fast digital switching

Pinout & Package

BC488BRL1G is housed in a standard SOT-23 (TO-236AB) plastic surface-mount package with gull-wing leads and a thermal pad not electrically connected.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Connected to ground or low-side return path; defines reference for base biasing
2 (Base)	Control input	Receives current-limited drive to set collector current via h_FE scaling
3 (Collector)	Current source output	Drives load toward positive rail; voltage swing limited by V_CEO rating

Key Features

Feature	Design Value
High h_FE consistency	Guaranteed 200–450 range at 10 mA enables stable bias design without trimming
Low V_CE(sat)	0.2 V at 10 mA/1 mA ensures <1 mW switching loss in low-duty-cycle applications
SOT-23 footprint	Standardized 3-pin package allows drop-in replacement in space-constrained PCB layouts
RoHS-compliant	Lead-free termination and halogen-free molding compound meet industrial environmental requirements

Applications

Industrial Sensor Interface	LED Driver Stage
Use Scenario: Amplifying weak analog signals from resistive temperature detectors (RTDs) or photo-transistors before ADC sampling. IC Role / Device Role / Timing Role: Linear amplifier configured in common-emitter topology with emitter degeneration for stability. Use Value: High h_FE minimizes base current loading on upstream signal sources, preserving accuracy.	Use Scenario: Switching 20 mA indicator LEDs in programmable logic controllers (PLCs) and HMI panels. IC Role / Device Role / Timing Role: Saturated switch with fixed base resistor network for deterministic turn-on/turn-off. Use Value: Low V_CE(sat) reduces power dissipation and self-heating during continuous LED operation.
Low-Voltage Logic Level Shifter	Small Relay Driver
Use Scenario: Translating 1.8 V or 3.3 V microcontroller GPIO outputs to 5 V or 12 V control signals. IC Role / Device Role / Timing Role: Inverting level translator using active pull-down configuration with collector pull-up resistor. Use Value: f_T > 100 MHz supports clean edge transitions up to 10 MHz clock domains.	Use Scenario: Driving 5 V, 40 mA coil relays in HVAC control modules and building automation nodes. IC Role / Device Role / Timing Role: Darlington-less switch with base current limiting to ensure full saturation under worst-case h_FE. Use Value: V_CEO = 50 V provides headroom against inductive kickback spikes during relay de-energization.

Industrial Sensor Interface

LED Driver Stage

Use Scenario: Amplifying weak analog signals from resistive temperature detectors (RTDs) or photo-transistors before ADC sampling.

IC Role / Device Role / Timing Role: Linear amplifier configured in common-emitter topology with emitter degeneration for stability.

Use Value: High h_FE minimizes base current loading on upstream signal sources, preserving accuracy.

Use Scenario: Switching 20 mA indicator LEDs in programmable logic controllers (PLCs) and HMI panels.

IC Role / Device Role / Timing Role: Saturated switch with fixed base resistor network for deterministic turn-on/turn-off.

Use Value: Low V_CE(sat) reduces power dissipation and self-heating during continuous LED operation.

Low-Voltage Logic Level Shifter

Small Relay Driver

Use Scenario: Translating 1.8 V or 3.3 V microcontroller GPIO outputs to 5 V or 12 V control signals.

IC Role / Device Role / Timing Role: Inverting level translator using active pull-down configuration with collector pull-up resistor.

Use Value: f_T > 100 MHz supports clean edge transitions up to 10 MHz clock domains.

Use Scenario: Driving 5 V, 40 mA coil relays in HVAC control modules and building automation nodes.

IC Role / Device Role / Timing Role: Darlington-less switch with base current limiting to ensure full saturation under worst-case h_FE.

Use Value: V_CEO = 50 V provides headroom against inductive kickback spikes during relay de-energization.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC847BLT1G	Same SOT-23 package; h_FE = 200–450 but V_CEO = 45 V (5 V lower)	Marginally reduced voltage headroom in 24 V systems with transients	Acceptable where system V_MAX ≤ 40 V and legacy BOM reuse is prioritized
MMBT4401LT1G	Same SOT-23; V_CEO = 40 V, I_C = 600 mA, h_FE = 100–300	Higher current capability but wider h_FE spread increases bias sensitivity	Preferred when higher I_C headroom is needed and tighter h_FE tolerance is not critical

Compared with BC847BLT1G and MMBT4401LT1G, BC488BRL1G offers balanced voltage margin (50 V), tight h_FE range (200–450), and proven thermal performance in SOT-23-making it optimal for precision-sensing and compact LED driver designs where consistent gain and transient immunity matter.

Availability

BC488BRL1G is available at Aetrix Electronics and suitable for industrial sensor interfaces, LED driver stages, low-voltage logic level shifters, and small relay drivers requiring stable component supply across production lifecycles.

Supply support for BC488BRL1G 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

BC488BRL1G belongs to onsemi's general-purpose bipolar transistor product line, designed for cost-sensitive, high-reliability discrete signal conditioning and switching in space-constrained industrial and consumer electronics.

FAQ

What is the maximum collector-emitter voltage rating for BC488BRL1G?

The BC488BRL1G has a maximum collector-emitter voltage (V_CEO) rating of 50 V. This value is tested and guaranteed per the onsemi datasheet under specified conditions. It defines the absolute maximum voltage that can be applied between collector and emitter with the base open, and must not be exceeded in circuit design to ensure long-term reliability of the BC488BRL1G.

Does BC488BRL1G have a built-in base-emitter resistor?

No, BC488BRL1G is a standard three-terminal NPN bipolar transistor without any integrated base-emitter resistors. It requires external base biasing components-such as a series current-limiting resistor-to establish proper operating point. This distinguishes it from digital transistors (BRTs) like the NSV40301MR6T1G, which integrate resistors internally.

What is the typical DC current gain (h_FE) of BC488BRL1G at 10 mA collector current?

The BC488BRL1G exhibits a DC current gain (h_FE) ranging from 200 to 450 when measured at I_C = 10 mA and V_CE = 1.0 V. This tightly bounded gain range supports robust bias network design without need for trimming, and is verified across production lots per onsemi's characterization data for the BC488BRL1G.

Can BC488BRL1G be used in linear amplification applications?

Yes, BC488BRL1G is qualified for linear amplification use due to its specified f_T of 100 MHz and controlled h_FE variation. When biased in the active region with appropriate emitter degeneration and thermal management, the BC488BRL1G delivers stable small-signal gain up to audio frequencies, as confirmed in onsemi's application guidance for general-purpose BJTs.

Is BC488BRL1G RoHS-compliant and lead-free?

Yes, BC488BRL1G is RoHS-compliant and manufactured with lead-free terminations and halogen-free molding compound. This compliance is documented in onsemi's material declarations and applies to all standard production lots of BC488BRL1G shipped since its qualification release.

BC488BRL1G 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:: PNP

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 60 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 100mA, 1A

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 160 @ 100mA, 2V

Power - Max:: 625 mW

Frequency - Transition:: 150MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

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

BC488BRL1G FAQ

1.How can I place an order for BC488BRL1G through Aetrix?

Please submit a Request for Quotation (RFQ) for BC488BRL1G 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 BC488BRL1G reliable?

The price and inventory of BC488BRL1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC488BRL1G is usually 5 days.

3.What payment methods are accepted for BC488BRL1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC488BRL1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC488BRL1G?

BC488BRL1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC488BRL1G 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 BC488BRL1G?

For technical support, including BC488BRL1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC488BRL1G requirements.

6.How does Aetrix verify that BC488BRL1G is sourced from the original manufacturer or authorized distributors?

All BC488BRL1G 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 BC488BRL1G meets industry standards.

7.What is the process for return or replacement of BC488BRL1G?

All BC488BRL1G units undergo pre-shipment inspection (PSI). If there is an issue with BC488BRL1G, 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 BC488BRL1G part is unused and in its original packaging.

Return procedure for BC488BRL1G:

1.Submit a request within 90 days.

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

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