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

Nexperia USA Inc. BC847A,215

Name: BC847A,215
Brand: Nexperia USA Inc.
SKU: BC847A,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC847A,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BC847A,215.pdf

Description:: TRANS NPN 45V 0.1A TO-236AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC847A,215 from Nexperia is an NPN general-purpose bipolar junction transistor (BJT) in SOT23 (TO-236AB) package, rated for 45 V V_CEO, 100 mA I_C, and DC current gain (h_FE) of 110–220 at V_CE = 5 V and I_C = 2 mA. It serves as a low-voltage switching and linear amplification device in signal conditioning, level translation, and discrete logic interface circuits.

For engineers reviewing the BC847A,215 datasheet, BC847A,215 pinout, BC847A,215 application, or BC847A,215 equivalent, this part is selected for cost-sensitive, space-constrained designs requiring predictable small-signal gain, low saturation voltage (V_CE(sat) ≤ 400 mV at I_C = 100 mA), and stable operation across −65 °C to +150 °C ambient range.

Technical Context

The BC847A,215 operates as a standard silicon NPN BJT with base-emitter forward bias enabling collector current control via base current injection. Its h_FE range (110–220) provides consistent current amplification for biasing networks and switch drivers without requiring tight gain binning.

Thermal resistance R_th(j-a) is 500 K/W on FR4 PCB with single-sided copper, supporting continuous operation up to 250 mW P_tot at T_amb ≤ 25 °C. Absolute maximum ratings include V_CBO = 50 V, V_EBO = 6 V, and I_CM = 200 mA (1 ms pulse), defining safe operating area boundaries for transient load handling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum collector-emitter voltage before breakdown; sets upper rail limit for switching applications.
I_C	100 mA - Continuous DC collector current rating; defines max steady-state load drive capability.
h_FE	110–220 @ V_CE = 5 V, I_C = 2 mA - Gain band enables reliable base resistor calculation for switch saturation or amplifier bias stability.
V_CE(sat)	≤ 400 mV @ I_C = 100 mA, I_B = 5 mA - Low saturation voltage minimizes power loss and heating in ON-state switching.
P_tot	250 mW @ T_amb ≤ 25 °C - Total power dissipation limit determines thermal derating requirements on PCB layout.
T_j	150 °C - Maximum junction temperature; constrains allowable power dissipation under elevated ambient conditions.

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 2.8 mm × 1.4 mm footprint, 1.1 mm height, and gull-wing lead form compatible with standard reflow soldering profiles.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Current-controlled input node; requires series resistor to limit I_B and ensure saturation or linear operation.
2	Emitter (E)	Common reference terminal; connected to ground or low-side return path in common-emitter configurations.
3	Collector (C)	Output current terminal; sinks load current when B-E junction is forward-biased and V_CE < V_CEO.

Key Features

Feature	Design Value
Three gain selections	BC847A (110–220), BC847B (200–450), BC847C (420–800) - Enables precise h_FE matching for analog gain stability or digital switch consistency.
Low V_CE(sat)	200–400 mV @ I_C = 100 mA - Reduces conduction loss in high-duty-cycle switching, improving efficiency in battery-powered systems.
Wide temperature range	−65 °C to +150 °C operating ambient - Supports deployment in industrial control, automotive under-hood non-safety modules, and outdoor electronics.
Standard SOT23 footprint	Compatible with JEDEC TO-236AB land pattern - Ensures drop-in replacement capability and compatibility with automated assembly lines.

Applications

LED Driver Circuit

Microcontroller GPIO Interface

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V or 5 V MCU outputs.

IC Role / Device Role / Timing Role: NPN switch configured in common-emitter mode, sinking LED current to ground.

Use Value: V_CE(sat) ≤ 400 mV ensures >95% of supply voltage reaches LED anode, maximizing brightness at low I/O drive strength.

Use Scenario: Level-shifting 1.8 V logic signals to 5 V peripherals or optocoupler inputs.

IC Role / Device Role / Timing Role: Active-low inverting buffer with fixed gain and fast turn-on/turn-off response.

Use Value: h_FE ≥ 110 guarantees full saturation with ≤ 100 µA base drive, reducing MCU port loading and timing uncertainty.

Signal Amplifier Stage

Relay Driver Circuit

Use Scenario: Boosting weak sensor signals (e.g., thermistor divider output) prior to ADC sampling.

IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier biased in active region for linear voltage gain.

Use Value: f_T = 100 MHz supports bandwidths up to ~1 MHz with moderate gain, sufficient for slow analog sensors.

Use Scenario: Controlling 12 V, 40 mA coil relays from embedded controller outputs.

IC Role / Device Role / Timing Role: High-current switch with flyback diode protection, handling inductive kickback safely.

Use Value: I_CM = 200 mA (1 ms pulse) accommodates relay surge current during pull-in, preventing premature failure.

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
BC847B,215	h_FE = 200–450 (vs. 110–220); otherwise identical ratings and package.	Better suited for low-base-drive applications where higher gain reduces required I/O current.	Select when base drive is limited (e.g., 3.3 V MCU with weak output) and tighter gain tolerance is acceptable.
MMBT3904LT1G	V_CEO = 40 V (vs. 45 V); h_FE = 100–300; same SOT23 package and pinout.	Marginally lower voltage rating; widely available but less optimized for 45 V rail systems.	Choose for legacy designs or multi-source procurement where 40 V headroom suffices and second-source assurance is critical.

Compared with BC847B,215 and MMBT3904LT1G, the BC847A,215 offers the lowest h_FE band-ideal for predictable, stable switching with minimal risk of overdrive-induced storage delay-and the highest V_CEO among common SOT23 NPN transistors, extending safe operation in 36 V nominal systems.

Availability

BC847A,215 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfaces, signal amplifier stages, and relay driver circuits requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for BC847A,215 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-grade and industrial-standard components.

The BC847x series targets cost-effective, space-efficient general-purpose switching and amplification in consumer, industrial, and computing applications-designed for manufacturability, thermal robustness, and broad parametric consistency across temperature.

FAQ

What is the maximum continuous collector current for BC847A,215?

The BC847A,215 has a maximum continuous collector current (I_C) of 100 mA at T_amb ≤ 25 °C. Derating applies above 25 °C per the thermal resistance R_th(j-a) = 500 K/W; at 70 °C ambient, usable I_C drops to approximately 65 mA to maintain T_j ≤ 150 °C.

Is BC847A,215 suitable for automotive applications?

No-BC847A,215 is not automotive-qualified. The datasheet explicitly states non-automotive qualification (Rev. 13, Section 13). For automotive use, Nexperia offers the BC847AQ series with AEC-Q101 qualification, extended temperature testing, and enhanced reliability screening.

How does the BC847A,215 marking code identify the part?

BC847A,215 is marked on the device body as "1E%", where "1E" denotes the BC847A type and "%" is a placeholder for the manufacturing site code. This marking aligns with Table 5 in the Nexperia datasheet and is visible under 20× magnification on the top surface of the SOT23 package.

What is the typical transition frequency (f_T) of BC847A,215?

The BC847A,215 has a typical transition frequency (f_T) of 100 MHz, measured at V_CE = 5 V, I_C = 10 mA, and f = 100 MHz. This value supports small-signal amplification up to ~1 MHz with moderate gain, making it appropriate for audio preamps, sensor buffers, and low-speed digital signal conditioning.

BC847A,215 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

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):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 400mV @ 5mA, 100mA

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

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

Power - Max:: 250 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BC847A,215 FAQ

1.How can I place an order for BC847A,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC847A,215 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 BC847A,215 reliable?

The price and inventory of BC847A,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847A,215 is usually 5 days.

3.What payment methods are accepted for BC847A,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847A,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC847A,215?

BC847A,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC847A,215 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 BC847A,215?

For technical support, including BC847A,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847A,215 requirements.

6.How does Aetrix verify that BC847A,215 is sourced from the original manufacturer or authorized distributors?

All BC847A,215 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 BC847A,215 meets industry standards.

7.What is the process for return or replacement of BC847A,215?

All BC847A,215 units undergo pre-shipment inspection (PSI). If there is an issue with BC847A,215, 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 BC847A,215 part is unused and in its original packaging.

Return procedure for BC847A,215:

1.Submit a request within 90 days.

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

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