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Nexperia USA Inc. BF622,115
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- Part No.:
- BF622,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BF622,115.pdf
- Description:
- TRANS NPN 250V 0.05A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:3,157
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Product details
Overview
BF622 from Nexperia is an NPN high-voltage transistor in SOT89 (SC-62) surface-mount package, rated for 250 V VCEO, 50 mA IC, and DC current gain hFE ≥ 50 at 25 mA/20 V; designed for video output stages where high breakdown voltage and low leakage are critical.
For engineers reviewing the BF622 datasheet, BF622 pinout, BF622 application, or BF622 equivalent, this device serves as a discrete high-voltage switching element with verified thermal performance on FR4 PCBs, precise emitter-base and collector-base cutoff current specs, and defined power derating across mounting pad sizes.
Technical Context
The BF622 operates as a single NPN bipolar junction transistor optimized for high-voltage linear and switching applications up to 250 V collector-emitter. Its hFE ≥ 50 at 25 mA ensures stable current amplification in video driver circuits, while low ICBO (≤10 nA at 200 V, 25 °C) supports signal integrity under high-voltage bias.
Thermal design is constrained by Rth(j-a) = 250 K/W (standard footprint), 156 K/W (1 cm² collector pad), and 113 K/W (6 cm² pad), enabling predictable power dissipation up to 1.1 W with adequate copper area. Transient thermal impedance curves confirm pulse handling capability up to 100 mA peak collector current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 250 V - Maximum safe collector-emitter voltage with base open; enables use in CRT video output and HV analog signal stages. |
| IC | 50 mA - Continuous collector current rating; defines linear operating envelope for video driver biasing. |
| hFE | ≥50 at VCE = 20 V, IC = 25 mA - Ensures sufficient current gain for low-base-drive video amplifier designs. |
| VCE(sat) | ≤600 mV at IC = 30 mA, IB = 5 mA - Limits conduction loss and self-heating during saturated switching. |
| ICBO | ≤10 nA at VCB = 200 V, Tamb = 25 °C - Guarantees minimal leakage-induced drift in high-impedance video coupling nodes. |
| fT | 60 MHz - Transition frequency confirms usable bandwidth for composite video signal amplification (up to ~5 MHz fundamental). |
| Rth(j-sp) | 30 K/W - Junction-to-solder-point thermal resistance supports direct thermal path design to PCB copper for reliability. |
Pinout & Package
SOT89 (SC-62) plastic surface-mount package: 3-lead, 1.5 mm pitch, 4.5 mm × 2.5 mm × 1.5 mm body; collector tab forms exposed thermal pad on lead 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Reference node for bias network; connects to ground or cathode return path in video output stage. |
| 2 | Collector | Main high-voltage output terminal; electrically and thermally coupled to PCB copper via exposed pad. |
| 3 | Base | Current-controlled input; requires external resistor network to set operating point in linear video amplification. |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage capability | 250 V VCEO and VCBO enable direct interface with CRT anode supplies and legacy video line drivers. |
| Low leakage performance | ICBO ≤ 10 nA at 200 V ensures minimal dark-current error in high-gain video preamplifier feedback paths. |
| Controlled gain consistency | hFE ≥ 50 (min) at 25 mA supports predictable DC biasing without trimming resistors in production. |
| Thermally robust SMT package | SOT89 collector tab allows >1 W power dissipation with 6 cm² copper pad, reducing need for heatsinks in space-constrained video modules. |
Applications
| Video Output Stages | High-Voltage Signal Switching |
|---|---|
Use Scenario: Driving cathode-ray tube (CRT) video output lines requiring 150–250 V swing and low distortion. IC Role / Device Role / Timing Role: Linear NPN amplifier operating in Class-A or Class-AB mode to buffer and amplify composite video signals. Use Value: 250 V VCEO and ≤600 mV VCE(sat) ensure full-swing fidelity without clipping or thermal runaway. |
Use Scenario: Switching high-voltage bias rails in analog test equipment and programmable power supplies. IC Role / Device Role / Timing Role: Discrete high-side switch controlled by logic-level base drive to enable/disable HV outputs. Use Value: Low ICBO (<10 nA) prevents unintended conduction during off-state, preserving system isolation integrity. |
| Legacy Display Driver Circuits | Analog Signal Level Shifting |
Use Scenario: Replacing obsolete transistors in industrial monitor and medical imaging display subsystems. IC Role / Device Role / Timing Role: Drop-in replacement for BF620/BF622-class devices in fixed-gain video amplifiers with ±12 V to ±200 V rails. Use Value: Identical SOT89 footprint and pinout (E-C-B) allow board-level substitution without layout changes. |
Use Scenario: Shifting signal reference levels between isolated analog domains in data acquisition front-ends. IC Role / Device Role / Timing Role: Emitter-follower configured transistor translating 0–5 V logic to 0–180 V analog ranges. Use Value: hFE ≥ 50 and fT = 60 MHz support accurate level translation up to 3 MHz without phase lag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN high-voltage transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BF623 | PNP complement; identical VCEO = 250 V, IC = 50 mA, but opposite polarity and inverted pinout (E-C-B → C-E-B). | Used in complementary push-pull video output stages; not interchangeable without circuit redesign. | Select only when PNP topology is required; verify base drive polarity and thermal layout compatibility. |
| BC817-40 | Lower VCEO = 45 V, higher hFE = 250–630, same SOT23 package - no thermal pad, lower power handling. | Suitable for low-voltage logic interfacing or general-purpose amplification, not HV video or bias switching. | Reject for >100 V applications; acceptable only if system voltage reduced and thermal constraints relaxed. |
Compared with BF622, BF623 provides matched high-voltage PNP behavior for symmetrical designs, while BC817-40 offers superior gain but fails at voltage and thermal requirements - making BF622 uniquely suited for legacy 200 V video signal paths.
Availability
BF622 is available at Aetrix Electronics and suitable for video output stages, high-voltage signal switching, and legacy display driver circuits requiring stable component supply and long-term obsolescence mitigation.
Supply support for BF622 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 essential semiconductors for automotive, industrial, mobile, and computing markets.
The BF622 belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for analog video, CRT driver, and HV switching applications where breakdown voltage, leakage control, and thermal stability are non-negotiable.
FAQ
Is BF622 automotive-qualified?
No. The BF622 is explicitly marked as non-automotive qualified per its 2024 revision history. It lacks AEC-Q101 qualification, temperature cycling validation beyond 150 °C junction, and automotive-grade screening. For automotive use, Nexperia recommends its -Q qualified alternatives such as the PBSS4041T.
What is the maximum allowable PCB copper area for BF622 to achieve 1.1 W power dissipation?
The 1.1 W total power dissipation rating applies only when mounted on an FR4 PCB with a 6 cm² copper pad dedicated to the collector tab (per Table 5 note [3]). Smaller pads reduce Ptot: 1 cm² yields 0.8 W; standard footprint yields 0.5 W. Thermal simulation using Rth(j-a) = 113 K/W is required for exact layout validation.
Can BF622 replace BF620 in existing designs?
Yes - BF622 and BF620 share identical SOT89 package, pinout (E-C-B), and key ratings (250 V VCEO, 50 mA IC). However, BF622 has tighter hFE min (50 vs. BF620's 40) and improved ICBO (10 nA vs. 20 nA), offering better gain consistency and leakage control without layout change.
Does BF622 support pulsed operation above 50 mA?
Yes. The peak collector current ICM is rated at 100 mA for single pulses ≤1 ms (Table 5). This enables short-duration flyback recovery or sync pulse injection in video timing circuits, provided average power remains within derated Ptot limits based on duty cycle and thermal mass.
BF622,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- 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:
- 1.1 W
- Frequency - Transition:
- 60MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BF622,115 FAQ
1.How can I place an order for BF622,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BF622,115 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 BF622,115 reliable?
The price and inventory of BF622,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BF622,115 is usually 5 days.
3.What payment methods are accepted for BF622,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BF622,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BF622,115?
BF622,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BF622,115 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 BF622,115?
For technical support, including BF622,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BF622,115 requirements.
6.How does Aetrix verify that BF622,115 is sourced from the original manufacturer or authorized distributors?
All BF622,115 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 BF622,115 meets industry standards.
7.What is the process for return or replacement of BF622,115?
All BF622,115 units undergo pre-shipment inspection (PSI). If there is an issue with BF622,115, 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 BF622,115 part is unused and in its original packaging.
Return procedure for BF622,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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