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

Diodes Incorporated BC848A-7-F

Name: BC848A-7-F
Brand: Diodes Incorporated
SKU: BC848A-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC848A-7-F

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: BC848A-7-F.pdf

Description:: TRANS NPN 30V 0.1A SOT-23-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC848A-7-F from Diodes Incorporated is an NPN small-signal transistor in SOT23 package, rated for V_CEO = 30 V, I_C = 100 mA, and h_FE = 110–220 at I_C = 2 mA, used in low-power switching and audio-frequency amplification circuits in consumer and industrial electronics.

For engineers reviewing the BC848A-7-F datasheet, BC848A-7-F pinout, BC848A-7-F application, or BC848A-7-F equivalent, this page delivers verified electrical parameters, SOT23 terminal mapping, thermal derating curves, DC gain vs. current behavior, and validated alternatives for discrete BJT selection in space-constrained analog and digital interface designs.

Technical Context

This transistor operates as a general-purpose NPN bipolar junction device with fixed gain binning ('A' grade), optimized for linear amplification and saturated switching. Its V_CE(sat) ≤ 250 mV at I_C = 10 mA / I_B = 0.5 mA and f_T ≥ 100 MHz support stable AF amplifier stages and fast digital signal routing.

Thermal performance is defined by R_θJA = 403 °C/W on minimum pad layout and 357 °C/W on 15 mm × 15 mm copper, enabling reliable operation up to +150 °C junction temperature. ESD robustness includes 4 kV HBM and 400 V MM ratings per JEDEC standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - Maximum collector-emitter voltage before breakdown under open-base conditions; sets upper rail limit for low-voltage logic-level switching.
I_C (continuous)	100 mA - Safe steady-state collector current; defines maximum load drive capability in relay drivers or LED buffers.
h_FE range	110–220 @ I_C = 2 mA - Confirmed DC current gain spread; enables predictable biasing in emitter-follower or common-emitter amplifier topologies.
V_CE(sat)	90–250 mV @ I_C = 10 mA / I_B = 0.5 mA - Verified saturation voltage; ensures <0.25 V drop across collector-emitter during ON-state switching.
f_T	100–300 MHz - Measured gain-bandwidth product; supports stable amplification up to mid-AF range with margin for PCB parasitics.
P_D	310 mW - Max power dissipation on standard FR4 layout; determines thermal headroom for continuous operation without heatsinking.
ESD HBM	4,000 V - Human Body Model rating; qualifies device for handling in non-ESD-controlled assembly environments.

Pinout & Package

Package: SOT23 - surface-mount plastic package with 3-pin configuration, 0.008 g mass, UL 94V-0 flammability rating, and matte tin-plated leads compliant with MIL-STD-202 solderability requirements.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink node	Low-impedance output path for amplified current; connects to ground or low-side load return in switching configurations.
2 (Base)	Control input	Receives bias current to modulate collector current; requires series resistor to limit I_B and prevent overdrive.
3 (Collector)	Current source node	Delivers switched or amplified current to load; placed at higher potential than emitter in active/saturation modes.

Key Features

Feature	Design Value
Lead-free & RoHS 3 compliant	Fully compliant with EU Directive 2015/863/EU; no intentionally added lead, bromine & chlorine <900 ppm each, antimony <1000 ppm.
Automated insertion ready	SOT23 footprint and lead finish optimized for pick-and-place and reflow processes; compatible with standard SMT assembly lines.
High-temperature operation	Rated for T_J = –65°C to +150°C; supports deployment in automotive under-hood modules and industrial control enclosures.
Complementary PNP pairing	Matches BC858A–BC858C family; enables balanced push-pull output stages and differential amplifier designs.

Applications

Audio Pre-amplifier Stage

Microcontroller GPIO Buffer

Use Scenario: Amplifying weak microphone signals prior to ADC sampling in portable voice recorders.

IC Role / Device Role / Timing Role: NPN common-emitter amplifier providing 20–30 dB voltage gain with low noise figure (NF ≤ 10 dB).

Use Value: Stable h_FE and f_T > 100 MHz ensure flat frequency response across 20 Hz–20 kHz band without peaking or roll-off.

Use Scenario: Driving 10 mA LED indicators or optocoupler inputs from 3.3 V microcontroller I/O pins.

IC Role / Device Role / Timing Role: Low-side switch with base driven directly via MCU GPIO through current-limiting resistor.

Use Value: V_CE(sat) ≤ 250 mV minimizes power loss and heat generation while maintaining full LED brightness.

Power Supply Enable Control

Level-Shifting Interface

Use Scenario: Enabling/disabling 5 V auxiliary rails in multi-rail embedded systems using 3.3 V logic signals.

IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling PMOS/NMOS pass transistor gate drive.

Use Value: I_C = 100 mA rating safely handles gate charge currents of typical small-signal MOSFETs without thermal stress.

Use Scenario: Translating 1.8 V logic outputs to 5 V-tolerant inputs in mixed-voltage sensor interfaces.

IC Role / Device Role / Timing Role: Single-transistor level shifter operating in common-emitter configuration with pull-up resistor.

Use Value: Fast switching (f_T ≥ 100 MHz) and low V_BE(on) (580–700 mV) ensure sub-100 ns propagation delay and clean edge integrity.

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
BC847A-7-F	V_CEO = 45 V (vs. 30 V); same h_FE bin and SOT23 package	Supports higher supply rails (e.g., 36 V industrial sensors); identical pinout and biasing	Select when system V_CC exceeds 30 V but gain and speed requirements match.
MMBT3904LT1G	h_FE = 100–300 (wider spread); V_CEO = 40 V; R_θJA = 357 °C/W on 15 mm² copper	Higher thermal efficiency on large pads; less predictable gain at low I_C	Prefer for thermally demanding layouts where 310 mW derating is insufficient.

Compared with BC848A-7-F, BC847A-7-F offers higher voltage tolerance without gain or package change, while MMBT3904LT1G trades gain consistency for improved thermal resistance-making the former ideal for voltage-margin expansion and the latter for high-power-density board areas.

Availability

BC848A-7-F is available at Aetrix Electronics and suitable for audio pre-amplifiers, microcontroller GPIO buffering, and power supply enable control requiring stable component supply, consistent parametric binning, and long-term industrial lifecycle support.

Supply support for BC848A-7-F 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, specializing in high-reliability components for industrial, computing, and consumer markets.

The BC846–BC848 series belongs to Diodes' general-purpose small-signal transistor product line, designed specifically for cost-sensitive, space-constrained applications requiring predictable gain, low saturation voltage, and robust thermal performance in SOT23 packaging.

FAQ

What is the maximum junction temperature for BC848A-7-F?

The absolute maximum junction temperature is +150 °C, with storage temperature matching this range. Operation above this limit risks permanent degradation of h_FE, increased leakage, and accelerated failure. Derating begins at +25 °C ambient, reducing allowable power by 3.5 mW/°C on standard FR4 layout per the 403 °C/W R_θJA.

Is BC848A-7-F pin-compatible with BC847A-7-F?

Yes-both use identical SOT23 package with emitter-base-collector pinout (1–2–3). Mechanical dimensions, pad layout, and thermal profiles match exactly. The only functional difference is V_CEO (30 V vs. 45 V), making them direct replacements where voltage margin permits.

Does BC848A-7-F support automotive applications?

No-the standard BC848A-7-F is not AEC-Q101 qualified. Diodes offers the automotive-grade BC848AQ-7-F variant, which undergoes additional stress testing and lot traceability per AEC specifications. Use BC848AQ-7-F for under-hood or safety-critical vehicle subsystems.

How does the 'A' suffix affect h_FE binning?

The 'A' grade specifies h_FE = 110–220 at I_C = 2 mA and V_CE = 5 V. 'B' and 'C' grades offer higher ranges (200–450 and 420–800 respectively). This binning enables precise bias network design without gain variation compensation circuitry in production-grade analog stages.

BC848A-7-F 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:: Active

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 30 V

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

Current - Collector Cutoff (Max):: 15nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 110 @ 2mA, 5V

Power - Max:: 300 mW

Frequency - Transition:: 300MHz

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

BC848A-7-F FAQ

1.How can I place an order for BC848A-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for BC848A-7-F 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 BC848A-7-F reliable?

The price and inventory of BC848A-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC848A-7-F is usually 5 days.

3.What payment methods are accepted for BC848A-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC848A-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC848A-7-F?

BC848A-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC848A-7-F 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 BC848A-7-F?

For technical support, including BC848A-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC848A-7-F requirements.

6.How does Aetrix verify that BC848A-7-F is sourced from the original manufacturer or authorized distributors?

All BC848A-7-F 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 BC848A-7-F meets industry standards.

7.What is the process for return or replacement of BC848A-7-F?

All BC848A-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BC848A-7-F, 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 BC848A-7-F part is unused and in its original packaging.

Return procedure for BC848A-7-F:

1.Submit a request within 90 days.

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

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