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

Diodes Incorporated BC807-40-7

Name: BC807-40-7
Brand: Diodes Incorporated
SKU: BC807-40-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC807-40-7

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: BC807-40-7.pdf

Description:: TRANS PNP 45V 0.5A SOT-23-3

Quantity:: RFQ Add To RFQ list

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Inventory:6,145

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Product details

Overview

BC807-40-7 from Diodes Incorporated is a 45V PNP small-signal transistor in SOT23 package, optimized for switching and audio-frequency amplifier applications. It delivers h_FE = 250–600 at I_C = −100 mA, V_CE(sat) = −0.7 V at I_C = −500 mA/I_B = −50 mA, and f_T = 100 MHz, supporting robust low-voltage logic-level control in industrial sensor interfaces.

For engineers reviewing the BC807-40-7 datasheet, BC807-40-7 pinout, BC807-40-7 application, or BC807-40-7 equivalent, key selection criteria include DC current gain spread across collector current (60–600), thermal resistance (R_θJA = 403 °C/W on minimal FR4), ESD robustness (HBM 4 kV), and automotive-grade variant availability (BC807-40Q).

Technical Context

This PNP bipolar junction transistor uses epitaxial planar die construction to ensure stable gain and low saturation voltage under pulsed and continuous operation. Its complementary NPN counterpart is BC817-40, enabling matched pair design in push-pull amplifiers and H-bridge drivers.

The device operates across −55°C to +150°C with guaranteed breakdown ratings: V_CBO = −50 V, V_CEO = −45 V, and V_EBO = −5.0 V. Thermal derating begins at 25°C, with power dissipation dropping linearly to zero at 150°C per the published curve.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−45 V - Maximum safe collector-emitter voltage before avalanche conduction in common-emitter configuration
h_FE @ I_C = −100 mA	250–600 - Enables high-current switching with low base drive overhead in discrete logic buffers
V_CE(sat) @ I_C/I_B = −500/−50 mA	−0.7 V - Limits power loss to ≤350 mW in saturated switch mode at full rated current
f_T	100 MHz - Supports stable AF amplification up to 20 kHz with >5× bandwidth margin
R_θJA	403 °C/W - Requires ≥15 mm² copper pour for sustained 310 mW operation at ambient ≤70°C
ESD HBM	4,000 V - Allows direct handling in non-ESD-controlled assembly without gate protection circuitry

Pinout & Package

Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, 0.008 g mass, UL 94V-0 rating, and J-STD-020 Level 1 moisture sensitivity.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Connected to higher potential rail in high-side switch configurations; sets reference for base bias network
2 (Base)	Control input	Accepts TTL/CMOS-compatible negative-going logic signals; requires current-limiting resistor to prevent IBM exceedance
3 (Collector)	Output current path	Drives inductive loads (relays, LEDs) with flyback diode placement critical due to −45 V V_CEO limit

Key Features

Feature	Design Value
Epitaxial planar die construction	Ensures consistent h_FE distribution and low leakage (I_CES ≤ −5.0 µA at 150°C) across production lots
Complementary NPN pairing (BC817-40)	Enables symmetrical push-pull output stages without gain mismatch-induced crossover distortion
Lead-free & halogen-free "Green" compliance	Meets RoHS 3 (2015/863/EU) and automotive ELV Directive requirements without compromising solderability
Automotive-qualified variant (BC807-40Q)	Qualified to AEC-Q101 with extended temperature validation and enhanced traceability for safety-critical modules

Applications

Industrial Sensor Signal Conditioning

Low-Voltage LED Driver

Use Scenario: Amplifying millivolt-level outputs from RTDs and bridge sensors into 0–3.3 V ADC ranges.

IC Role / Device Role / Timing Role: PNP emitter-follower buffer providing high input impedance and rail-to-rail output swing.

Use Value: Delivers h_FE ≥ 250 at I_C = −100 mA to maintain signal integrity with <1% gain error over −40°C to +85°C.

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V microcontroller GPIO pins.

IC Role / Device Role / Timing Role: Low-saturation switch sinking current through cathode-connected LEDs.

Use Value: Achieves V_CE(sat) ≤ −0.7 V at I_C = −20 mA, limiting power loss to <14 mW per channel.

Relay Coil Driver

Level-Shifting Interface

Use Scenario: Controlling 12 V/40 mA relay coils in programmable logic controllers.

IC Role / Device Role / Timing Role: High-gain saturated switch interfacing 3.3 V logic to 12 V load rails.

Use Value: Sustains I_C = −40 mA with h_FE ≥ 170, requiring only 235 µA base current-within GPIO sourcing limits.

Use Scenario: Translating 5 V UART TX signals down to 3.3 V logic levels for MCU inputs.

IC Role / Device Role / Timing Role: Inverting level shifter using open-collector configuration with pull-up to 3.3 V.

Use Value: Maintains 100 MHz f_T margin for clean 115.2 kbps signal edges without slew-induced jitter.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC807-40-7-F (Diodes)	Same die, identical SOT23 marking K5C, RoHS 3 compliant	No functional difference; differs only in tape/reel packaging (3k vs 10k)	Select based on volume procurement needs and line-side reel size constraints
MMBT4403 (ON Semiconductor)	V_CEO = −40 V, h_FE = 100–300 @ −150 mA, R_θJA = 450 °C/W	Lower breakdown and gain margin; less suitable for 45 V bus monitoring or high-temp industrial use	Use where cost sensitivity outweighs 5 V V_CEO headroom and thermal performance requirements

Compared with BC807-40-7, BC807-40-7-F offers identical electrical behavior but optimized for high-volume SMT lines via 10,000-unit reels, while MMBT4403 trades 5 V breakdown margin and 200-point h_FE ceiling for broader distributor availability at lower unit cost.

Availability

BC807-40-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, relay drivers, LED indicators, and level-shifting circuits requiring stable component supply and long-term obsolescence management.

Supply support for BC807-40-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The BC807 series belongs to Diodes' general-purpose bipolar transistor product line, engineered for reliability in cost-sensitive industrial and consumer applications where consistent gain, low saturation, and environmental compliance are mandatory.

FAQ

What is the maximum continuous collector current for BC807-40-7?

The absolute maximum continuous collector current (I_C) is −0.5 A at T_A = +25°C. Derating applies above 25°C per the published curve: power dissipation drops linearly to zero at 150°C. At 85°C ambient, usable I_C is limited to approximately −350 mA to stay within the 310 mW P_D limit on minimal PCB copper.

Is BC807-40-7 suitable for automotive applications?

The standard BC807-40-7 is not AEC-Q101 qualified. However, Diodes offers the pin- and electrically identical BC807-40Q variant, which undergoes full automotive qualification including temperature cycling, HTOL, and ESD testing per AEC-Q101 Rev D. Use BC807-40Q for infotainment, body control, or ADAS subsystems.

How does the BC807-40-7 compare to BC807-25-7 in practical design?

BC807-40-7 provides higher h_FE (250–600 vs. 160–400 at I_C = −100 mA), enabling lower base drive current in high-gain amplifier stages. However, its tighter gain distribution increases sensitivity to thermal drift-designs requiring stable bias over wide temperature ranges may prefer BC807-25-7's broader but more predictable h_FE band.

Can BC807-40-7 be used in linear amplifier configurations?

Yes-it is specified for AF amplifier applications with f_T = 100 MHz and typical h_FE stability up to 20 kHz. For Class-A operation, limit I_C to ≤100 mA and V_CE to ≤10 V to keep power dissipation below 310 mW on standard FR4. Avoid sustained operation above 70°C ambient without thermal relief.

BC807-40-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 250 @ 100mA, 1V

Power - Max:: 310 mW

Frequency - Transition:: 100MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

BC807-40-7 FAQ

1.How can I place an order for BC807-40-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC807-40-7 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 BC807-40-7 reliable?

The price and inventory of BC807-40-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC807-40-7 is usually 5 days.

3.What payment methods are accepted for BC807-40-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC807-40-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC807-40-7?

BC807-40-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC807-40-7 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 BC807-40-7?

For technical support, including BC807-40-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC807-40-7 requirements.

6.How does Aetrix verify that BC807-40-7 is sourced from the original manufacturer or authorized distributors?

All BC807-40-7 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 BC807-40-7 meets industry standards.

7.What is the process for return or replacement of BC807-40-7?

All BC807-40-7 units undergo pre-shipment inspection (PSI). If there is an issue with BC807-40-7, 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 BC807-40-7 part is unused and in its original packaging.

Return procedure for BC807-40-7:

1.Submit a request within 90 days.

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

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