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

onsemi BC807-25LT1

Name: BC807-25LT1
Brand: onsemi
SKU: BC807-25LT1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC807-25LT1

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BC807-25LT1.pdf

Description:: TRANS PNP 45V 0.5A SOT23-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC807-25LT1 from onsemi is a PNP silicon general-purpose transistor in SOT-23 package, rated for −45 V V_CEO, −500 mA I_C, and DC current gain (h_FE) of 160–400 at I_C = −100 mA / V_CE = −1.0 V. It serves as a medium-current switch or linear amplifier in low-voltage bias networks, power management stages, and discrete logic interface circuits.

For engineers reviewing the BC807-25LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, guaranteed h_FE binning (25-series), SOT-23 thermal derating behavior, and compatibility with FR-5 PCB layouts requiring <300 mW dissipation at 25°C ambient.

Technical Context

The BC807-25LT1 operates as a bipolar junction transistor with fixed PNP polarity, relying on base-emitter forward bias to control collector-emitter conduction. Its h_FE range (160–400) is specified at I_C = −100 mA and V_CE = −1.0 V, and saturation is characterized at I_C = −500 mA / I_B = −50 mA with V_CE(sat) ≤ −0.7 V.

Thermal performance is defined for two board conditions: 225 mW PD on FR-5 (derate 1.8 mW/°C above 25°C) and 300 mW PD on alumina substrate (derate 2.4 mW/°C). Junction-to-ambient thermal resistance is 556°C/W (FR-5) or 417°C/W (alumina), confirming its suitability for surface-mount discrete switching where self-heating must remain within −55°C to +150°C T_J/T_stg limits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−45 V - Maximum allowable collector-emitter voltage before breakdown under open-base condition; defines safe operating voltage headroom in negative-rail switching.
I_C	−500 mA - Continuous collector current rating; sets upper limit for load-driving capability in DC-coupled switch or amplifier stages.
h_FE	160–400 - DC current gain bin for BC807-25 variant; ensures predictable base drive requirements across production lots at I_C = −100 mA.
V_CE(sat)	≤ −0.7 V @ I_C = −500 mA / I_B = −50 mA - Confirms low conduction loss in saturated switching applications, minimizing power dissipation during ON state.
R_JA (FR-5)	556°C/W - Junction-to-ambient thermal resistance on standard FR-5 board; used to calculate temperature rise (ΔT = P_D × R_JA) for thermal design margining.
f_T	100 MHz - Current-gain bandwidth product at I_C = −10 mA / V_CE = −5 V; indicates usable frequency range for small-signal amplification or RF switching up to ~10 MHz.

Pinout & Package

SOT-23 (Case 318, Style 6) surface-mount plastic package with gull-wing leads; 1.0 mm × 0.75 mm footprint, 0.95 mm height, and JEDEC-compliant soldering footprint.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal for forward-biasing the base-emitter junction; requires current-limited drive to achieve target h_FE-dependent collector current.
2	Emitter	Common reference terminal for PNP operation; connected to higher potential rail (e.g., V_CC or regulated supply) in typical switch configurations.
3	Collector	Output terminal sourcing current to load; reverse-polarity connection relative to NPN devices, enabling high-side switching or complementary pair use.

Key Features

Feature	Design Value
Pb-Free packaging option	Available as BC807-25LT1G; meets RoHS Directive 2011/65/EU without lead content in terminations or molding compound.
Guaranteed h_FE binning	160–400 range specifically for BC807-25 variant; eliminates gain uncertainty in feedback networks and current mirror designs.
Low V_CE(sat)	≤ −0.7 V at full-rated I_C; reduces conduction losses by >30% versus older PNP transistors like BC857, improving efficiency in battery-powered loads.
High V_CBO	−50 V collector-base breakdown rating; supports robust operation in inductive load switching with flyback voltage spikes up to −45 V.

Applications

LED Driver Circuit	Level-Shifting Interface
Use Scenario: Driving common-anode RGB LED arrays from 3.3 V or 5 V microcontroller GPIOs with active-low enable. IC Role / Device Role / Timing Role: PNP switch controlling current path from supply rail to LED cathodes; provides inversion and current gain for weak MCU outputs. Use Value: Enables direct GPIO control without external level translators; V_CE(sat) ≤ −0.7 V ensures minimal voltage drop across transistor, preserving LED forward voltage margin.	Use Scenario: Translating 1.8 V logic signals to 5 V domains in mixed-supply systems (e.g., sensor interface to legacy controller). IC Role / Device Role / Timing Role: Discrete level shifter using emitter-follower or common-emitter configuration to invert and shift voltage thresholds. Use Value: Leverages guaranteed h_FE ≥160 to maintain clean transitions at 1–10 MHz data rates; SOT-23 footprint allows dense placement near signal sources.
Load Switch (High-Side)	Current Mirror Reference
Use Scenario: Enabling/disabling 12 V solenoid or relay coils via microcontroller output with galvanic isolation via optocoupler or direct drive. IC Role / Device Role / Timing Role: High-side PNP switch sourcing current to inductive load; base driven through current-limiting resistor from MCU. Use Value: −45 V V_CEO accommodates back-EMF clamping diode drop plus supply; thermal derating data supports continuous 300 mA operation on standard FR-5 boards.	Use Scenario: Building matched current sources in analog front-ends, such as biasing op-amp input stages or setting DAC reference currents. IC Role / Device Role / Timing Role: One leg of a discrete PNP current mirror; paired with identical BC807-25LT1 or same-bin device for ratio accuracy. Use Value: Tight h_FE bin (160–400) and consistent V_BE(on) ≤ −1.2 V ensure <5% current mismatch at matched temperatures, critical for precision analog functions.

LED Driver Circuit

Level-Shifting Interface

Use Scenario: Driving common-anode RGB LED arrays from 3.3 V or 5 V microcontroller GPIOs with active-low enable.

IC Role / Device Role / Timing Role: PNP switch controlling current path from supply rail to LED cathodes; provides inversion and current gain for weak MCU outputs.

Use Value: Enables direct GPIO control without external level translators; V_CE(sat) ≤ −0.7 V ensures minimal voltage drop across transistor, preserving LED forward voltage margin.

Use Scenario: Translating 1.8 V logic signals to 5 V domains in mixed-supply systems (e.g., sensor interface to legacy controller).

IC Role / Device Role / Timing Role: Discrete level shifter using emitter-follower or common-emitter configuration to invert and shift voltage thresholds.

Use Value: Leverages guaranteed h_FE ≥160 to maintain clean transitions at 1–10 MHz data rates; SOT-23 footprint allows dense placement near signal sources.

Load Switch (High-Side)

Current Mirror Reference

Use Scenario: Enabling/disabling 12 V solenoid or relay coils via microcontroller output with galvanic isolation via optocoupler or direct drive.

IC Role / Device Role / Timing Role: High-side PNP switch sourcing current to inductive load; base driven through current-limiting resistor from MCU.

Use Value: −45 V V_CEO accommodates back-EMF clamping diode drop plus supply; thermal derating data supports continuous 300 mA operation on standard FR-5 boards.

Use Scenario: Building matched current sources in analog front-ends, such as biasing op-amp input stages or setting DAC reference currents.

IC Role / Device Role / Timing Role: One leg of a discrete PNP current mirror; paired with identical BC807-25LT1 or same-bin device for ratio accuracy.

Use Value: Tight h_FE bin (160–400) and consistent V_BE(on) ≤ −1.2 V ensure <5% current mismatch at matched temperatures, critical for precision analog functions.

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
BC807-25-7-F (Diodes Inc.)	Identical h_FE bin (160–400), same SOT-23 package, but V_CEO = −45 V and V_CBO = −50 V match BC807-25LT1 exactly; V_CE(sat) tested at same I_C/I_B conditions.	No functional difference in switching or amplification roles; validated for same FR-5 thermal profiles and reflow profiles per J-STD-020.	Select when dual-sourcing is required; pinout and marking (5B1 vs. B25) differ but board layout remains unchanged.
MMBT3906LT1G (onsemi)	Lower h_FE (100–300), same −40 V V_CEO, −500 mA I_C, but V_CE(sat) = −0.4 V @ I_C = −10 mA only - not rated at −500 mA; f_T = 250 MHz.	Better for low-current, high-speed switching (<10 mA loads); unsuitable for sustained −500 mA operation due to missing high-current V_CE(sat) spec.	Choose only for signal-level inversion or low-power logic; avoid in power-switching roles where BC807-25LT1's −500 mA rating and proven saturation behavior are essential.

Compared with BC807-25LT1, BC807-25-7-F offers identical electrical and thermal specs with seamless second-source compatibility, while MMBT3906LT1G trades high-current capability for higher f_T and lower V_CE(sat) at microampere currents - making it a functional alternative only in low-power signal paths.

Availability

BC807-25LT1 is available at Aetrix Electronics and suitable for LED driver circuits, high-side load switches, level-shifting interfaces, and current mirror references requiring stable component supply and consistent h_FE binning across production batches.

Supply support for BC807-25LT1 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 specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.

The BC807 series belongs to onsemi's general-purpose bipolar transistor product line, designed for cost-sensitive, high-reliability discrete switching and amplification in consumer, industrial, and computing equipment where predictable gain, low saturation voltage, and Pb-free compliance are mandatory.

FAQ

What is the maximum continuous collector current rating for BC807-25LT1?

The BC807-25LT1 has a maximum continuous collector current (I_C) rating of −500 mA at T_A = 25°C. This rating assumes proper PCB thermal management-specifically, a FR-5 board with 225 mW total device dissipation and 1.8 mW/°C derating above 25°C. Exceeding this current without adequate heat sinking risks thermal runaway or permanent degradation of the BC807-25LT1.

How does the h_FE of BC807-25LT1 differ from BC807-16LT1 and BC807-40LT1?

The BC807-25LT1 is binned for h_FE = 160–400 at I_C = −100 mA and V_CE = −1.0 V, distinguishing it from BC807-16LT1 (h_FE = 100–250) and BC807-40LT1 (h_FE = 250–600). This mid-range gain bin balances drive sensitivity and stability-making the BC807-25LT1 ideal for applications needing reliable turn-on without excessive base current or gain-induced oscillation risk.

Is BC807-25LT1 suitable for high-frequency signal amplification?

The BC807-25LT1 has an f_T of 100 MHz at I_C = −10 mA, indicating usable small-signal gain up to approximately 10 MHz in common-emitter configurations. However, it is not optimized for RF; its Cob = 10 pF and limited high-current f_T performance mean the BC807-25LT1 is best applied in audio-frequency switching, DC-coupled amplifiers, or digital logic interfaces-not RF front-ends or GHz-range circuits.

What is the pin configuration of BC807-25LT1 in the SOT-23 package?

The BC807-25LT1 uses standard SOT-23 pinout: Pin 1 is Base, Pin 2 is Emitter, and Pin 3 is Collector. This matches JEDEC TO-236 outline and is confirmed in the official onsemi datasheet (BC807−16LT1/D, Rev. 6, page 1). Correct orientation is critical-reversing emitter and collector will prevent conduction, and misidentifying base can cause unintended latch-up or damage in driven circuits using BC807-25LT1.

Does BC807-25LT1 have Pb-free variants, and how are they marked?

Yes, the Pb-free version is designated BC807-25LT1G and carries the same electrical and thermal specifications as BC807-25LT1. It is marked with "5B1" on the top surface, identical to the standard part; the 'G' suffix denotes Green (Pb-free) compliance per J-STD-609. Both variants share the same SOT-23 package dimensions and soldering profile, ensuring drop-in replacement capability in RoHS-compliant manufacturing flows using BC807-25LT1G.

BC807-25LT1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 700mV @ 50mA, 500mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 160 @ 100mA, 1V

Power - Max:: 300 mW

Frequency - Transition:: 100MHz

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3 (TO-236)

BC807-25LT1 FAQ

1.How can I place an order for BC807-25LT1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC807-25LT1 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 BC807-25LT1 reliable?

The price and inventory of BC807-25LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC807-25LT1 is usually 5 days.

3.What payment methods are accepted for BC807-25LT1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC807-25LT1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC807-25LT1?

BC807-25LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC807-25LT1 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 BC807-25LT1?

For technical support, including BC807-25LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC807-25LT1 requirements.

6.How does Aetrix verify that BC807-25LT1 is sourced from the original manufacturer or authorized distributors?

All BC807-25LT1 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 BC807-25LT1 meets industry standards.

7.What is the process for return or replacement of BC807-25LT1?

All BC807-25LT1 units undergo pre-shipment inspection (PSI). If there is an issue with BC807-25LT1, 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 BC807-25LT1 part is unused and in its original packaging.

Return procedure for BC807-25LT1:

1.Submit a request within 90 days.

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

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