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

Nexperia USA Inc. BF822,215

Name: BF822,215
Brand: Nexperia USA Inc.
SKU: BF822,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BF822,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BF822,215.pdf

Description:: TRANS NPN 250V 0.05A TO-236AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BF822,215 from Nexperia is an NPN high-voltage transistor in SOT23 package, rated for 250 V V_CEO and 250 V V_CBO, with 50 mA I_C max and 60 MHz f_T, designed for high-voltage switching in telephony line interface circuits.

For engineers reviewing the BF822,215 datasheet, BF822,215 pinout, BF822,215 application, or BF822,215 equivalent, key selection criteria include high-voltage blocking capability, low leakage (10 nA ICBO at 200 V), DC current gain (h_FE ≥ 50 @ 25 mA), thermal resistance (500 K/W on FR4), and SOT23 footprint compatibility.

Technical Context

This discrete NPN bipolar junction transistor operates in linear or switching mode with open-base collector-emitter breakdown of 250 V and open-emitter collector-base breakdown of 250 V. Its 60 MHz transition frequency supports moderate-speed switching up to ~10–20 MHz practical edge rates.

Designed for stable high-voltage biasing, it delivers V_CE(sat) ≤ 600 mV at I_C = 30 mA / I_B = 5 mA and exhibits ultra-low ICBO (≤10 nA at 200 V, 25 °C), critical for leakage-sensitive HV hold-off stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	250 V - Enables direct interface with 200 V telecom line voltages without external clamping.
I_C max	50 mA - Supports low-power HV bias, ringing, or supervisory current paths in analog line cards.
h_FE	≥50 @ 25 mA - Ensures reliable base drive margin in emitter-follower or switch configurations.
f_T	60 MHz - Permits use in 1–5 MHz oscillator or pulse-shaping circuits with adequate gain margin.
R_th(j-a)	500 K/W - Requires minimal PCB copper area for thermal management in ambient ≤70 °C environments.
ICBO	≤10 nA @ 200 V - Minimizes standby leakage in HV off-state, preserving signal integrity in idle line conditions.

Pinout & Package

SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), rated for 250 mW total power dissipation at T_amb ≤ 25 °C on FR4 PCB.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Low-impedance control input; requires current-limited drive (I_BM ≤ 50 mA peak) for safe switching.
2	Emitter (E)	Reference node for V_BE bias; connected to ground or negative rail in common-emitter configurations.
3	Collector (C)	High-voltage output terminal; handles up to 250 V reverse-biased potential relative to emitter.

Key Features

Feature	Design Value
High-voltage blocking	250 V V_CEO/V_CBO enables direct integration into POTS line interface and ring generator circuits.
Low leakage performance	ICBO ≤ 10 nA at 200 V ensures minimal standby current in always-on telecom supervision functions.
Compact SMT footprint	SOT23 package allows dense placement in space-constrained line card modules and DSLAM subsystems.
Thermal robustness	150 °C max junction temperature and 500 K/W R_th(j-a) support operation in sealed or convection-limited enclosures.

Applications

Telecom Line Interface

Ringing Generator

Use Scenario: Isolating and conditioning analog signals on PSTN subscriber lines under -48 V DC and 90 V AC ringing conditions.

IC Role / Device Role / Timing Role: NPN high-voltage switch controlling current flow through line transformer primary during on-hook/off-hook transitions.

Use Value: 250 V rating eliminates need for series Zener clamping; low ICBO prevents false off-hook detection during standby.

Use Scenario: Generating 20 Hz/25 Hz AC ringing voltage superimposed on -48 V DC battery feed in central office line cards.

IC Role / Device Role / Timing Role: High-voltage switching element in push-pull or single-ended ringing amplifier stage.

Use Value: 60 MHz f_T and 50 mA I_C support clean 20–25 Hz square-wave generation with fast rise/fall times and minimal distortion.

Supervisory Circuitry

Off-Hook Detection

Use Scenario: Monitoring loop current to detect handset lift (off-hook) or fault conditions (short/open) on analog telephone lines.

IC Role / Device Role / Timing Role: Current-sensing transistor in constant-current source or shunt-regulated bias path.

Use Value: Stable h_FE ≥ 50 across temperature ensures consistent current regulation over -40 °C to +85 °C operating range.

Use Scenario: Detecting DC loop current change from ~0 mA (on-hook) to ~20–50 mA (off-hook) in analog line interface ICs.

IC Role / Device Role / Timing Role: Low-leakage NPN switch enabling precise current threshold sensing via emitter resistor voltage drop.

Use Value: ICBO ≤ 10 nA prevents false triggering due to leakage-induced voltage drift across sense resistor.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage NPN transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC846B,215	Lower V_CEO (65 V), higher h_FE (200–450), same SOT23 package	Not suitable for >100 V line applications; limited to low-voltage logic-level switching	Select only when system voltage remains below 50 V and high gain is prioritized over HV capability.
BF823,215	PNP complement; identical V_CEO/V_CBO (250 V), same I_C and f_T, mirrored pinout (1=C, 2=E, 3=B)	Used in complementary emitter-follower or level-shifting pairs where PNP sourcing is required	Choose for matched high-voltage complementary pair design; verify pinout reversal in layout.

Compared with BC846B,215 and BF823,215, BF822,215 uniquely balances 250 V blocking, low leakage, and SOT23 scalability-making it irreplaceable in telecom line-side HV switching where voltage rating is non-negotiable.

Availability

BF822,215 is available at Aetrix Electronics and suitable for telephony infrastructure, professional communication equipment, and analog line interface modules requiring stable component supply and long-term industrial availability.

Supply support for BF822,215 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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and automotive-grade quality.

BF822,215 belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for analog telephony, line interface units, and industrial HV signal conditioning where robustness and leakage control are critical.

FAQ

Is BF822,215 suitable for automotive applications?

No. BF822,215 is explicitly designated as non-automotive qualified per Nexperia's 2023 revision history. It lacks AEC-Q101 qualification, has no automotive-grade screening, and is not tested to automotive temperature or reliability standards. Use only in industrial, telecom, or commercial equipment.

What is the maximum continuous power dissipation for BF822,215 on FR4 PCB?

The maximum continuous power dissipation is 250 mW at T_amb ≤ 25 °C, based on thermal resistance R_th(j-a) = 500 K/W. Derating is required above 25 °C ambient-approximately 2.0 mW/°C reduction beyond that point per Nexperia's limiting values table.

Does BF822,215 have a specified ESD rating?

No ESD rating (e.g., HBM or CDM) is published in the official 2023 product data sheet. The device should be handled using standard static-sensitive component precautions, but no quantitative ESD immunity level is guaranteed or characterized by Nexperia for this part.

Can BF822,215 replace BF822 in legacy designs?

Yes-BF822,215 is the tape-and-reel packaged version of BF822 with identical electrical specifications, pinout, and thermal characteristics. The ",215" suffix denotes packaging format (7" reel, 3000 pcs), not a functional revision; all parametric data matches the base BF822 type number.

BF822,215 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):: 50 mA

Voltage - Collector Emitter Breakdown (Max):: 250 V

Vce Saturation (Max) @ Ib, Ic:: 600mV @ 5mA, 30mA

Current - Collector Cutoff (Max):: 10nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 50 @ 25mA, 20V

Power - Max:: 250 mW

Frequency - Transition:: 60MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BF822,215 FAQ

1.How can I place an order for BF822,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BF822,215 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 BF822,215 reliable?

The price and inventory of BF822,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BF822,215 is usually 5 days.

3.What payment methods are accepted for BF822,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BF822,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BF822,215?

BF822,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BF822,215 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 BF822,215?

For technical support, including BF822,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BF822,215 requirements.

6.How does Aetrix verify that BF822,215 is sourced from the original manufacturer or authorized distributors?

All BF822,215 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 BF822,215 meets industry standards.

7.What is the process for return or replacement of BF822,215?

All BF822,215 units undergo pre-shipment inspection (PSI). If there is an issue with BF822,215, 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 BF822,215 part is unused and in its original packaging.

Return procedure for BF822,215:

1.Submit a request within 90 days.

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

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