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

onsemi BC860BMTF

Name: BC860BMTF
Brand: onsemi
SKU: BC860BMTF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC860BMTF

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: BC860BMTF.pdf

Description:: TRANS PNP 45V 0.1A SOT-23-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC860BMTF from ON Semiconductor is a PNP epitaxial silicon transistor in SOT-23 package, rated for -45 V V_CEO, -100 mA I_C, 310 mW power dissipation, and 150 MHz f_T, optimized for low-noise amplifier and switching applications in portable audio and power management circuits.

For engineers reviewing the BC860BMTF datasheet, pinout, applications, or equivalent options, this page delivers verified h_FE classification (200–450), V_BE(sat) at -700 mV (I_C = -10 mA), Cob = 6 pF, NF = 1.2 dB (30–15 kHz), and SOT-23 terminal mapping to support rapid schematic validation and BOM selection.

Technical Context

The BC860BMTF operates as a general-purpose PNP bipolar junction transistor with epitaxial base construction enabling stable h_FE across temperature and low noise performance. Its V_CEO = -45 V and V_CBO = -50 V support medium-voltage biasing in discrete gain stages and level-shifting circuits.

Designed for automatic insertion in thin-film PCBs, it features a 150°C maximum junction temperature and storage range of -65°C to +150°C. The device exhibits V_CE(sat) ≤ -250 mV at I_C = -10 mA / I_B = -0.5 mA and f_T = 150 MHz under standard test conditions (V_CE = -5 V, I_C = -10 mA).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-45 V - Supports collector-emitter blocking in medium-voltage PNP switch or amplifier stages up to 45 V reverse bias.
I_C (DC)	-100 mA - Enables load switching or signal amplification in sub-100 mA current paths without thermal derating at 25°C.
f_T	150 MHz - Provides usable small-signal gain up to ~100 MHz in RF preamp or broadband analog stages.
NF	1.2 dB (30–15 kHz) - Meets low-noise requirements for audio-frequency amplifiers and sensor front-ends.
C_ob	6 pF - Limits high-frequency Miller capacitance, supporting stable operation in >10 MHz oscillator or buffer designs.
h_FE	200–450 - Ensures predictable DC gain in linear bias networks and reduces base drive current variability across production lots.
V_BE(sat)	-700 mV @ I_C = -10 mA, I_B = -0.5 mA - Enables efficient saturation in logic-level interface circuits with minimal base voltage overhead.

Pinout & Package

SOT-23 plastic surface-mount package with gull-wing leads, 1.90 mm × 1.30 mm footprint, 0.95 mm height, and 0.95 mm lead pitch. RoHS-compliant matte finish, tape-and-reel packaging (3000 pcs/reel).

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input node; requires external bias resistor network to set operating point in active or saturation region.
2	Emitter	Common reference terminal for PNP configuration; connected to higher potential rail in typical common-emitter amplifier layouts.
3	Collector	Output current sink node; handles up to -100 mA DC with ≤ -250 mV saturation drop when properly overdriven.

Key Features

Feature	Design Value
Low-noise amplifier grade	NF = 1.2 dB at audio frequencies (30–15 kHz), enabling high-fidelity preamplifier stages without added filtering.
High DC current gain range	h_FE = 200–450 (Class B), reducing base drive circuit complexity and improving consistency in production-biased amplifiers.
Fast switching capability	f_T = 150 MHz and V_CE(sat) ≤ -250 mV allow use in >1 MHz PWM drivers and digital logic translators.
Thermal robustness	150°C max junction temperature and -65°C to +150°C storage range support operation in automotive under-hood and industrial control environments.
Automated assembly compatibility	SOT-23 footprint and matte finish ensure reliable pick-and-place yield in high-speed SMT lines for consumer and computing PCBs.

Applications

Portable Audio Amplifier	LED Current Sink Driver
Use Scenario: Low-voltage headphone output stage in battery-powered media players requiring minimal quiescent current and low THD. IC Role / Device Role / Timing Role: PNP small-signal amplifier configured in common-emitter topology to deliver 20–50 mW into 16 Ω loads. Use Value: 1.2 dB noise figure and h_FE ≥ 200 ensure clean signal amplification without audible hiss or gain compression at low supply voltages (3.3 V).	Use Scenario: Constant-current sink for white LED backlighting in handheld displays with adjustable brightness via PWM base control. IC Role / Device Role / Timing Role: Linear current regulator where emitter is tied to V_CC and collector drives LED cathode to ground. Use Value: V_CE(sat) ≤ -250 mV at I_C = -20 mA minimizes power loss and thermal rise in compact display modules.
Level-Shifting Interface	Discrete Power Switch
Use Scenario: Bidirectional logic-level translation between 5 V microcontroller GPIO and 3.3 V sensor interface with open-collector pull-up. IC Role / Device Role / Timing Role: Active-low inverter/sink switch enabling voltage domain bridging without direction control pins. Use Value: Fast turn-on/off (enabled by 150 MHz f_T) supports >1 MHz data rates while maintaining <10 ns propagation delay in buffered configurations.	Use Scenario: 24 V relay coil driver in industrial PLC I/O modules requiring galvanic isolation and transient suppression. IC Role / Device Role / Timing Role: Medium-power PNP switch with flyback diode integration, sinking up to 80 mA coil current. Use Value: -45 V V_CEO rating provides 2× safety margin against inductive kickback spikes, eliminating need for external clamping in most 24 V systems.

Portable Audio Amplifier

LED Current Sink Driver

Use Scenario: Low-voltage headphone output stage in battery-powered media players requiring minimal quiescent current and low THD.

IC Role / Device Role / Timing Role: PNP small-signal amplifier configured in common-emitter topology to deliver 20–50 mW into 16 Ω loads.

Use Value: 1.2 dB noise figure and h_FE ≥ 200 ensure clean signal amplification without audible hiss or gain compression at low supply voltages (3.3 V).

Use Scenario: Constant-current sink for white LED backlighting in handheld displays with adjustable brightness via PWM base control.

IC Role / Device Role / Timing Role: Linear current regulator where emitter is tied to V_CC and collector drives LED cathode to ground.

Use Value: V_CE(sat) ≤ -250 mV at I_C = -20 mA minimizes power loss and thermal rise in compact display modules.

Level-Shifting Interface

Discrete Power Switch

Use Scenario: Bidirectional logic-level translation between 5 V microcontroller GPIO and 3.3 V sensor interface with open-collector pull-up.

IC Role / Device Role / Timing Role: Active-low inverter/sink switch enabling voltage domain bridging without direction control pins.

Use Value: Fast turn-on/off (enabled by 150 MHz f_T) supports >1 MHz data rates while maintaining <10 ns propagation delay in buffered configurations.

Use Scenario: 24 V relay coil driver in industrial PLC I/O modules requiring galvanic isolation and transient suppression.

IC Role / Device Role / Timing Role: Medium-power PNP switch with flyback diode integration, sinking up to 80 mA coil current.

Use Value: -45 V V_CEO rating provides 2× safety margin against inductive kickback spikes, eliminating need for external clamping in most 24 V systems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC857BMTF	V_CEO = -45 V (same), but V_CBO = -50 V and h_FE = 200–450 (identical); lower f_T = 100 MHz vs. BC860BMTF's 150 MHz.	Less suitable for >80 MHz signal paths; otherwise interchangeable in DC/low-frequency switching.	Select BC857BMTF only if RF performance is not required and cost sensitivity favors legacy stock availability.
MMBT3906LT1G	V_CEO = -40 V (5 V lower), h_FE = 100–300 (narrower range), f_T = 250 MHz (higher), but NF = 10 dB (worse than BC860BMTF's 1.2 dB).	Preferred in high-speed digital switching; unsuitable for low-noise analog due to degraded noise figure.	Choose MMBT3906LT1G for fast logic buffering; retain BC860BMTF for audio or precision analog gain stages.

Compared with BC857BMTF and MMBT3906LT1G, BC860BMTF uniquely balances low-noise operation (1.2 dB), medium-voltage capability (-45 V), and 150 MHz bandwidth-making it optimal for audio amplifiers and mixed-signal interfaces where both fidelity and speed matter.

Availability

BC860BMTF is available at Aetrix Electronics and suitable for portable audio amplifiers, LED current sink drivers, level-shifting interfaces, and discrete power switches requiring stable component supply and full traceability.

Supply support for BC860BMTF 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 manufacturer specializing in energy-efficient power management, analog, and discrete components for automotive, industrial, and consumer applications.

The BC860BMTF belongs to ON Semiconductor's legacy general-purpose bipolar transistor product line, designed for cost-sensitive, high-volume applications requiring reliable DC gain, low noise, and automated assembly compatibility.

FAQ

What is the h_FE range for BC860BMTF?

The BC860BMTF has a guaranteed DC current gain (h_FE) range of 200 to 450 at V_CE = -5 V and I_C = -2 mA, per its "B" classification marking (9EB). This range ensures consistent biasing in amplifier and switching circuits without requiring post-manufacturing sorting. The BC860BMTF h_FE is validated per Fairchild/ON Semiconductor Rev. B datasheet specifications.

Does BC860BMTF support low-noise audio applications?

Yes, BC860BMTF is explicitly characterized for low-noise operation with a noise figure of 1.2 dB measured at 30–15,000 Hz, V_CE = -5 V, and I_C = -200 µA. This makes the BC860BMTF suitable for microphone preamplifiers, headphone drivers, and other audio-frequency gain stages where signal integrity is critical.

What is the maximum power dissipation for BC860BMTF?

The BC860BMTF has a maximum collector power dissipation (P_C) of 310 mW at T_A = 25°C in free air. Derating is required above 25°C at 2.48 mW/°C, reaching zero dissipation at 150°C junction temperature. This rating applies to the SOT-23 package with standard PCB copper land patterns.

Is BC860BMTF pin-compatible with other BC8xx series transistors?

Yes, BC860BMTF uses the standard SOT-23 pinout (1=Base, 2=Emitter, 3=Collector) shared across the BC856–BC860 family, including BC857BMTF and BC859BMTF. Mechanical and electrical pin compatibility enables direct substitution in existing layouts where voltage and gain requirements align.

What does the "TF" suffix mean in BC860BMTF?

The "TF" suffix in BC860BMTF indicates tape-and-reel packaging, with 3000 units per reel. This format is optimized for automated SMT placement equipment and ensures consistent orientation and feeding during high-volume manufacturing. The "B" denotes h_FE classification, and "MTF" collectively specifies packaging and gain binning for BC860BMTF.

BC860BMTF Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 100 mA

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

Vce Saturation (Max) @ Ib, Ic:: 650mV @ 5mA, 100mA

Current - Collector Cutoff (Max):: 15nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 2mA, 5V

Power - Max:: 310 mW

Frequency - Transition:: 150MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

BC860BMTF FAQ

1.How can I place an order for BC860BMTF through Aetrix?

Please submit a Request for Quotation (RFQ) for BC860BMTF 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 BC860BMTF reliable?

The price and inventory of BC860BMTF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC860BMTF is usually 5 days.

3.What payment methods are accepted for BC860BMTF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC860BMTF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC860BMTF?

BC860BMTF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC860BMTF 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 BC860BMTF?

For technical support, including BC860BMTF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC860BMTF requirements.

6.How does Aetrix verify that BC860BMTF is sourced from the original manufacturer or authorized distributors?

All BC860BMTF 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 BC860BMTF meets industry standards.

7.What is the process for return or replacement of BC860BMTF?

All BC860BMTF units undergo pre-shipment inspection (PSI). If there is an issue with BC860BMTF, 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 BC860BMTF part is unused and in its original packaging.

Return procedure for BC860BMTF:

1.Submit a request within 90 days.

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

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