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Nexperia USA Inc. BF623,115
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- Part No.:
- BF623,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BF623,115.pdf
- Description:
- TRANS PNP 250V 0.05A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:2,037
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Product details
Overview
BF623 from Nexperia is a PNP high-voltage bipolar junction transistor in SOT89 (SC-62) package, rated for -250 V VCEO, -50 mA IC, and 50 minimum hFE at -25 mA. It operates as a high-voltage switching or amplification device in video output stages, where robust collector-emitter blocking and low saturation voltage (-800 mV at -30 mA/-5 mA) are critical.
For engineers reviewing the BF623 datasheet, BF623 pinout, BF623 application, or BF623 equivalent, this page delivers verified electrical parameters, thermal derating behavior on FR4 PCBs, real-world power dissipation limits (up to 1.1 W with 6 cm² collector pad), and validated alternatives for high-voltage PNP replacement in legacy analog video systems.
Technical Context
The BF623 is a silicon PNP BJT optimized for high-voltage linear and switching operation in analog video signal paths. Its -250 V VCEO and -250 V VCBO support operation across wide supply rails, while its fT of 60 MHz enables stable gain at video frequencies.
Thermal performance is defined by three mounting configurations: Rth(j-a) = 250 K/W (standard footprint), 156 K/W (1 cm² collector pad), and 113 K/W (6 cm² pad). Transient thermal impedance curves confirm suitability for pulsed video load conditions up to 1 ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -250 V - Maximum safe collector-emitter voltage with base open; enables use in >200 V video sweep or deflection circuits. |
| IC | -50 mA - Continuous DC collector current rating; supports medium-power video driver stage loads. |
| hFE | 50 min @ -25 mA, -20 V - Sufficient DC gain for simple current-source biasing without complex feedback networks. |
| VCE(sat) | -800 mV max @ -30 mA / -5 mA - Low saturation voltage minimizes power loss and heating in switching applications. |
| Ptot | 1.1 W @ Tamb ≤ 25 °C with 6 cm² copper pad - Enables higher power handling than standard SOT89 parts when board layout supports thermal relief. |
| fT | 60 MHz - Supports bandwidth-critical video amplification up to ~10 MHz fundamental with margin. |
| Cre | 1.6 pF - Low feedback capacitance reduces risk of oscillation in high-gain video amplifier configurations. |
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, with exposed collector tab for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current sink terminal; connected to most negative rail or ground reference in PNP configuration. |
| 2 | Collector | Main power-handling terminal; electrically and thermally tied to exposed metal tab for PCB heat sinking. |
| 3 | Base | Control input; requires negative bias relative to emitter to turn on; low drive current (-5 mA typical for full saturation). |
Key Features
| Feature | Design Value |
|---|---|
| High breakdown voltage | -250 V VCEO allows direct interface with CRT anode supplies or high-voltage video line drivers without external clamping. |
| Low saturation voltage | -800 mV ensures <150 mW conduction loss at -30 mA, reducing thermal stress in continuous video output operation. |
| Thermally enhanced SOT89 | Exposed collector tab enables 1.1 W total dissipation with 6 cm² copper area-3× higher than standard SOT89 thermal limits. |
| Stable high-frequency gain | 60 MHz fT and 1.6 pF Cre support stable broadband video amplification without peaking or instability. |
Applications
| Video Output Stages | Deflection Circuit Drivers |
|---|---|
Use Scenario: Final amplification stage driving cathode-ray tube (CRT) video signals with peak-to-peak swing exceeding 150 V. IC Role / Device Role / Timing Role: PNP switching amplifier delivering synchronized video pulses with fast turn-off and minimal overshoot. Use Value: -250 V VCEO withstands flyback-induced transients; -800 mV VCE(sat) maintains linearity across full video amplitude range. |
Use Scenario: Horizontal deflection yoke driver requiring high-voltage pulse switching at 15.734 kHz in analog TV receivers. IC Role / Device Role / Timing Role: High-voltage PNP switch controlling current direction through deflection coil during retrace intervals. Use Value: -250 V VCBO blocks reverse flyback spikes; 60 MHz fT ensures clean edge fidelity on 1 µs rise/fall transitions. |
| Legacy Monitor Power Supplies | Analog Signal Level Shifters |
Use Scenario: Regulated auxiliary supply section in CRT monitor SMPS, generating isolated -12 V or -24 V rails. IC Role / Device Role / Timing Role: High-voltage PNP pass transistor in linear post-regulator stage following main flyback output. Use Value: 50 hFE enables simple resistor-biased regulation; 1.1 W Ptot supports 100–150 mA load capability with adequate heatsinking. |
Use Scenario: Level-shifting circuit converting TTL/CMOS logic signals to -5 V to -12 V ranges for legacy analog subsystem interfaces. IC Role / Device Role / Timing Role: Inverting level translator using emitter-follower or common-emitter topology with fixed bias. Use Value: -5 V VEBO rating safely accommodates negative input swings; low Cre prevents signal coupling distortion at 1–10 MHz data rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP high-voltage transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BF622 | NPN complement; +250 V VCEO, +50 mA IC, same SOT89 package and thermal specs. | Requires inverted biasing and signal polarity; not drop-in for PNP-based designs without circuit redesign. | Select only when NPN topology is acceptable and board layout allows emitter-grounded configuration. |
| MJD2955 | TO-220 package; -60 V VCEO, -10 A IC, higher power but lower voltage rating. | Designed for high-current, low-voltage power switching-not suitable for >100 V video or deflection applications. | Use only if system voltage is ≤60 V and thermal mass permits TO-220 mounting; not a functional substitute for BF623's high-voltage role. |
Compared with BF622 and MJD2955, the BF623 uniquely balances high-voltage blocking (-250 V), medium current capability (-50 mA), and SOT89 thermal scalability-making it irreplaceable in space-constrained, high-voltage analog video circuits where neither NPN polarity nor low-voltage power transistors meet design requirements.
Availability
BF623 is available at Aetrix Electronics and suitable for video output stages, CRT deflection drivers, legacy monitor power supplies, and analog level-shifting circuits requiring stable component supply with long-lifecycle support.
Supply support for BF623 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, industrial, and computing applications.
The BF623 belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for analog video, CRT, and legacy display systems demanding robust voltage tolerance and predictable thermal behavior in compact SMD packages.
FAQ
Is BF623 automotive-qualified?
No. Per Nexperia's revision history, BF623 v.4 (2024) explicitly states "non-automotive qualification." It lacks AEC-Q101 testing and is intended for industrial, consumer, and legacy display applications only. Automotive-grade alternatives require explicit -Q suffix parts from Nexperia's qualified portfolio.
What is the maximum allowable PCB temperature rise for reliable BF623 operation?
With a 6 cm² collector pad, BF623 achieves Rth(j-a) = 113 K/W. At 25 °C ambient and 1.1 W dissipation, junction temperature reaches 150 °C-the absolute maximum. To maintain 20 °C safety margin, limit power to ≤0.9 W or ambient to ≤15 °C under full load.
Can BF623 replace BC557 in a circuit?
No. BC557 is a general-purpose PNP with -45 V VCEO and -100 mA IC. BF623 offers triple the voltage rating but half the current capacity. Substitution would risk catastrophic failure in BC557's original low-voltage roles, and BF623's higher VBE and lower hFE may disrupt biasing in existing designs.
Does BF623 support wave soldering?
Yes. Nexperia provides dedicated wave soldering footprint (Fig. 7) with 0.7 mm solder lands and 5.3 mm × 6.6 mm occupied area. Recommended transport direction aligns with pin 1–3 orientation. Preheat and dwell time must comply with JEDEC J-STD-020 for plastic SMD packages.
BF623,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 50 mA
- Voltage - Collector Emitter Breakdown (Max):
- 250 V
- Vce Saturation (Max) @ Ib, Ic:
- 800mV @ 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
BF623,115 FAQ
1.How can I place an order for BF623,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BF623,115 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 BF623,115 reliable?
The price and inventory of BF623,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BF623,115 is usually 5 days.
3.What payment methods are accepted for BF623,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BF623,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BF623,115?
BF623,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BF623,115 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 BF623,115?
For technical support, including BF623,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BF623,115 requirements.
6.How does Aetrix verify that BF623,115 is sourced from the original manufacturer or authorized distributors?
All BF623,115 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 BF623,115 meets industry standards.
7.What is the process for return or replacement of BF623,115?
All BF623,115 units undergo pre-shipment inspection (PSI). If there is an issue with BF623,115, 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 BF623,115 part is unused and in its original packaging.
Return procedure for BF623,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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