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

Nexperia USA Inc. BC847,215

Name: BC847,215
Brand: Nexperia USA Inc.
SKU: BC847,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC847,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BC847,215.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:6,231

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Product details

Overview

BC847,215 from Nexperia is a 45 V, 100 mA NPN general-purpose transistor in SOT23 (TO-236AB) package, designed for low-voltage switching and small-signal amplification with h_FE ranging 110–800, V_CEO = 45 V, and P_tot = 250 mW. It serves as a discrete active switch or amplifier stage in power management, signal conditioning, and interface circuits across consumer and industrial PCBs.

For engineers reviewing the BC847,215 datasheet, BC847,215 pinout, BC847,215 application, or BC847,215 equivalent, key selection criteria include DC current gain binning (A/B/C), saturation voltage at I_C = 100 mA, thermal resistance on FR4, and SOT23 footprint compatibility with automated assembly.

Technical Context

The BC847,215 operates as a silicon NPN bipolar junction transistor with base-controlled current amplification. Its structure supports linear amplification (V_CE ≥ 1 V) and saturated switching (V_CEsat ≤ 400 mV at I_C = 100 mA, I_B = 5 mA), with guaranteed h_FE min/max spread per grade (e.g., BC847B: 200–450).

It complies with IEC 60134 absolute maximum ratings: V_CBO = 50 V, V_EBO = 6 V, T_j = 150 °C, and is rated for continuous operation up to 100 mA DC collector current on standard FR4 PCB with single-sided copper.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in switching applications.
I_C	100 mA - Continuous DC collector current rating; sets max load drive capability in relay drivers or LED switches.
h_FE	110–800 - DC current gain range (BC847 variant); determines required base drive current for target collector load.
V_CEsat	200–400 mV @ I_C = 100 mA, I_B = 5 mA - Low saturation voltage minimizes power loss in ON-state switching.
P_tot	250 mW @ T_amb ≤ 25 °C - Total power dissipation limit on standard FR4 PCB; constrains thermal design margin.
R_th(j-a)	500 K/W - Junction-to-ambient thermal resistance; used to calculate temperature rise under given power dissipation.
f_T	100 MHz - Transition frequency at V_CE = 5 V, I_C = 10 mA; indicates usable bandwidth for small-signal amplification.

Pinout & Package

SOT23 (TO-236AB) surface-mount plastic package: 3-pin, 1.3 mm × 2.9 mm footprint, 0.95 mm height, tin-plated leads compatible with reflow and wave soldering per JEDEC J-STD-020/003.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Current-controlled input node; requires ~0.5–5 mA drive to saturate 100 mA collector load depending on h_FE bin.
2	Emitter (E)	Common reference terminal; connected to ground or low-side return path in common-emitter configurations.
3	Collector (C)	Output current sink node; interfaces with load (e.g., resistor, LED, relay coil) tied to positive supply rail.

Key Features

Feature	Design Value
Three h_FE bins (A/B/C)	Enables precise base drive sizing: BC847A (110–220), BC847B (200–450), BC847C (420–800) reduce overdesign risk.
SOT23 package	Standardized 3-pin SMD footprint ensures compatibility with high-volume pick-and-place equipment and IPC-7351 land patterns.
V_CEsat ≤ 400 mV	Minimizes conduction loss in low-voltage logic-level switching (e.g., 3.3 V or 5 V microcontroller outputs driving loads).
150 °C max junction temperature	Supports operation in industrial ambient environments (−65 °C to +150 °C storage), with derating above 25 °C ambient.
Low C_c (1.5 pF)	Reduces Miller effect in high-frequency amplifiers, enabling stable gain up to 100 MHz f_T at modest bias points.

Applications

LED Driver Circuit

Microcontroller GPIO Expander

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V or 5 V MCU I/O pins with current limiting.

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

Use Value: V_CEsat ≤ 400 mV ensures >95% of supply voltage reaches LED anode; h_FE ≥ 200 allows <50 µA base current for full saturation.

Use Scenario: Adding discrete output capability to MCUs with limited or no dedicated high-current GPIOs.

IC Role / Device Role / Timing Role: Level-shifting and current-boosting buffer between MCU output and external 12 V solenoid or relay coil.

Use Value: 45 V V_CEO safely isolates MCU from inductive kickback; 100 mA I_C rating supports typical 12 V/20–80 mA relays.

Signal Amplifier Stage

Power Supply Enable Switch

Use Scenario: Low-noise preamplification of sensor signals (e.g., thermistor, photodiode) before ADC input.

IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier biased at I_C = 1–10 mA for optimal f_T and NF trade-off.

Use Value: f_T = 100 MHz and NF = 2–10 dB at 1 kHz enable clean amplification of sub-100 kHz analog sensor outputs.

Use Scenario: Enabling/disabling auxiliary 3.3 V or 5 V rails in battery-powered devices using MCU control.

IC Role / Device Role / Timing Role: High-side or low-side pass element controlling PMOS/NMOS gate or LDO EN pin.

Use Value: 250 mW P_tot and 500 K/W R_th(j-a) allow reliable 100 mA switching without heatsinking on standard PCBs.

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
BC846,215	V_CEO = 65 V, h_FE = 110–800, same SOT23 package and pinout.	Higher breakdown enables use in 48 V systems or with larger inductive transients.	Select when higher collector-emitter voltage margin is required without changing layout.
MMBT3904LT1G	V_CEO = 40 V, h_FE = 100–300 (typical), slightly higher V_CEsat (300 mV @ 10 mA).	Narrower h_FE spread reduces base drive variability but limits high-gain precision designs.	Prefer where tighter h_FE tolerance simplifies bias network design in production.

Compared with BC847,215, BC846,215 offers higher voltage headroom while maintaining identical footprint and gain options; MMBT3904LT1G trades gain range for tighter consistency and broader global availability, making it suitable for cost-sensitive high-volume consumer designs.

Availability

BC847,215 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, signal amplifier stages, and power supply enable switches requiring stable component supply and SOT23-compatible manufacturing flow.

Supply support for BC847,215 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 roots in Philips Semiconductors and headquartered in Nijmegen, Netherlands.

The BC847x series belongs to Nexperia's general-purpose transistor product line, engineered for broad applicability in cost-sensitive, space-constrained consumer, industrial, and computing applications where proven reliability and standardized packaging are critical.

FAQ

What is the exact h_FE range for BC847,215?

BC847,215 corresponds to the standard BC847 variant (not A/B/C suffix), with h_FE specified from 110 to 800 at V_CE = 5 V and I_C = 2 mA. This wide range reflects production binning; actual units fall within this span and are not further sorted unless ordered as BC847A/B/C.

Can BC847,215 replace BC847B in a circuit designed for h_FE = 200–450?

Yes, but with design margin consideration: BC847,215's minimum h_FE is 110, so base drive must be sized for worst-case gain. Circuits relying on BC847B's guaranteed 200+ h_FE may underdrive the transistor if swapped without recalculating R_B, risking incomplete saturation at high I_C.

Is BC847,215 automotive-qualified?

No. Per Nexperia's revision history (Rev. 13, July 2022), the BC847x series is explicitly marked "non-automotive qualified" and lacks AEC-Q101 stress testing. For automotive use, Nexperia recommends its BC847-Q series variants, which undergo extended temperature cycling and humidity testing.

What is the maximum allowable PCB copper area for thermal performance?

The 250 mW power rating and 500 K/W R_th(j-a) assume mounting on FR4 with single-sided 1 oz copper, standard SOT23 footprint, and tin-plated lands. Increasing copper area (e.g., thermal pads connected to internal planes) can reduce R_th(j-a), but datasheet values are validated only for the defined baseline layout in Figure 15.

BC847,215 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

BC847,215 FAQ

1.How can I place an order for BC847,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC847,215 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 BC847,215 reliable?

The price and inventory of BC847,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847,215 is usually 5 days.

3.What payment methods are accepted for BC847,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC847,215?

BC847,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC847,215 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 BC847,215?

For technical support, including BC847,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847,215 requirements.

6.How does Aetrix verify that BC847,215 is sourced from the original manufacturer or authorized distributors?

All BC847,215 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 BC847,215 meets industry standards.

7.What is the process for return or replacement of BC847,215?

All BC847,215 units undergo pre-shipment inspection (PSI). If there is an issue with BC847,215, 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 BC847,215 part is unused and in its original packaging.

Return procedure for BC847,215:

1.Submit a request within 90 days.

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

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