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onsemi KSC2330RBU
- Part No.:
- KSC2330RBU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body
- Datasheet:
-
KSC2330RBU.pdf
- Description:
- TRANS NPN 300V 0.1A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,487
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Product details
Overview
KSC2330RBU from onsemi is an NPN epitaxial silicon transistor designed for high-voltage chroma output stages in color TV systems, featuring VCBO and VCEO ratings of 300 V, IC = 100 mA, PC = 1 W, and fT = 50 MHz (typical) at VCE = 30 V and IC = 10 mA.
For engineers reviewing the KSC2330RBU datasheet, pinout, applications, or equivalent options, this device is selected for high-voltage switching and RF amplification where breakdown voltage, gain-bandwidth, and saturation voltage stability are critical in analog video signal paths.
Technical Context
The KSC2330RBU operates as a general-purpose high-voltage NPN bipolar junction transistor with a minimum hFE of 40 (R-class), collector-base and collector-emitter breakdown voltages rated at 300 V, and low output capacitance (Cob = 4 pF at VCB = 10 V).
Its TO-92L package supports through-hole mounting in space-constrained analog video circuits, and its fT = 50 MHz enables stable operation in chroma demodulation and IF amplifier stages without parasitic oscillation under typical bias conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCBO / VCEO | 300 V - Enables safe operation in color TV chroma output circuits with high-voltage swing and flyback transients. |
| IC (max) | 100 mA - Supports continuous current handling in video driver stages without thermal runaway under derated ambient conditions. |
| PC (max) | 1 W - Allows direct mounting on PCB without heatsink in low-duty-cycle video signal applications. |
| fT | 50 MHz (typ.) - Ensures sufficient bandwidth for chroma signal amplification up to ~3.58 MHz with margin for harmonics and transient response. |
| VCE(sat) | 0.5 V at IC = 10 mA, IB = 1 mA - Minimizes power loss and heating during saturated switching in pulse-driven chroma output stages. |
| Cob | 4 pF at VCB = 10 V - Reduces Miller effect and maintains stability in high-gain, high-frequency video amplifier configurations. |
| hFE Class | R-class (40–80) - Provides predictable DC gain for consistent biasing in fixed-gain chroma output designs. |
Pinout & Package
Package: TO-92L (Case 135AM), lead-formed, 3-pin through-hole plastic package with standard emitter-collector-base pinout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or low-impedance return path; polarity defines NPN operation and current direction in chroma output stage. |
| 2 (Collector) | High-voltage output node | Drives chroma load (e.g., CRT grid or IF transformer primary); withstands 300 V reverse bias during flyback. |
| 3 (Base) | Control input | Accepts bias current to set operating point; requires external resistor network to maintain R-class hFE range under temperature variation. |
Key Features
| Feature | Design Value |
|---|---|
| High breakdown voltage | 300 V VCBO/VCEO rating ensures robustness against voltage spikes in CRT-based color TV horizontal deflection and chroma circuits. |
| Low output capacitance | 4 pF Cob minimizes phase shift and instability in high-gain video amplifiers operating near fT limit. |
| Stable hFE classification | R-class (40–80) guarantees consistent DC biasing across production lots without individual gain binning or trim resistors. |
| TO-92L mechanical form | Standardized lead spacing and body dimensions enable automated insertion and compatibility with legacy TV repair and manufacturing tooling. |
Applications
| Color TV Chroma Output Stage | Video Signal Amplifier |
|---|---|
|
Use Scenario: Amplifying and driving the 3.58 MHz chrominance subcarrier signal to CRT grid or IF transformer in analog NTSC/PAL receivers. IC Role / Device Role / Timing Role: NPN switch/amplifier operating in common-emitter configuration with fixed bias to deliver clean chroma waveform with minimal distortion. Use Value: 300 V breakdown and 50 MHz fT ensure faithful reproduction of chroma envelope without clipping or high-frequency roll-off. |
Use Scenario: Boosting weak composite video signals before sync separation or RGB conversion in legacy broadcast equipment. IC Role / Device Role / Timing Role: Linear amplifier biased in active region to preserve video amplitude fidelity and rise/fall time integrity. Use Value: Low VCE(sat) and controlled hFE reduce thermal drift and gain variation across temperature, maintaining consistent video contrast. |
| Horizontal Deflection Driver | Legacy Monitor Video Output |
|
Use Scenario: Switching auxiliary horizontal deflection waveforms in CRT-based monitors requiring fast turn-on/turn-off with high-voltage tolerance. IC Role / Device Role / Timing Role: Saturated-switching transistor controlling current through deflection yoke auxiliary windings. Use Value: 0.5 V VCE(sat) limits conduction loss, while 300 V rating prevents avalanche failure during flyback recovery. |
Use Scenario: Final-stage video output buffer in monochrome or color computer monitors (e.g., CGA/EGA/VGA-era) driving 75 Ω coaxial loads. IC Role / Device Role / Timing Role: Emitter-follower or common-emitter driver delivering low-impedance, high-slew-rate video pulses. Use Value: 4 pF Cob and 50 MHz fT support full VGA bandwidth (up to ~25 MHz) without peaking or ringing artifacts. |
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 |
|---|---|---|---|
| KSC2330YBU | hFE range 120–240 (Y-class), otherwise identical absolute max ratings and electrical characteristics. | Better suited for low-base-drive applications requiring higher current gain; may need bias resistor adjustment in existing R-class designs. | Select KSC2330YBU only when circuit tolerates wider hFE spread and higher gain improves SNR in low-current video preamp stages. |
| 2SC3838 | Same TO-92L package, VCBO = 300 V, but fT = 100 MHz and Cob = 2.5 pF; hFE min = 70 (O-class). | Higher bandwidth and lower capacitance support extended video bandwidth beyond chroma, e.g., luminance or sync pulse sharpening. | Choose 2SC3838 when upgrading legacy KSC2330RBU designs for improved transient response and reduced group delay in multi-component video paths. |
Compared with KSC2330RBU, KSC2330YBU offers higher gain for reduced base drive requirements, while 2SC3838 delivers superior high-frequency linearity and lower capacitance-making it suitable for broadband video applications where KSC2330RBU's 50 MHz fT and 4 pF Cob become limiting.
Availability
KSC2330RBU is available at Aetrix Electronics and suitable for color TV repair, analog video equipment maintenance, and legacy monitor refurbishment requiring stable component supply and long-term obsolescence mitigation.
Supply support for KSC2330RBU 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
onsemi (formerly ON Semiconductor and Fairchild Semiconductor) is a global semiconductor supplier focused on energy-efficient power and sensing solutions for automotive, industrial, and consumer markets.
The KSC2330RBU belongs to onsemi's legacy analog discrete portfolio, developed specifically for high-reliability analog video signal conditioning in CRT-based television and display systems.
FAQ
What is the hFE classification of KSC2330RBU?
The KSC2330RBU is classified as "R-class" with a guaranteed DC current gain (hFE) range of 40 to 80 at VCE = 10 V and IC = 20 mA. This classification ensures predictable biasing behavior in fixed-resistor bias networks used in color TV chroma output stages, and distinguishes it from Y-class (120–240) or O-class (70–140) variants of the same KSC2330 family. The R-class specification is explicitly confirmed in the onsemi datasheet Rev. 2, October 2018.
What package type does KSC2330RBU use?
KSC2330RBU uses the TO-92L package (Case 135AM), a lead-formed variant of the standard TO-92 with 3.8 mm lead spacing and 4.9 mm body width. It is mechanically identical to TO-92 but optimized for automated insertion in legacy TV manufacturing lines. The pinout is Emitter (1), Collector (2), Base (3), and the package is rated for 150 °C maximum junction temperature. This information is documented in the "Package Dimensions" section of the official onsemi KSC2330 datasheet.
Can KSC2330RBU replace KSC2330YBU in existing designs?
KSC2330RBU can replace KSC2330YBU only if the circuit is designed to accommodate lower hFE (40–80 vs. 120–240); doing so without adjusting base bias resistors may cause insufficient collector current and signal clipping. The KSC2330RBU shares identical absolute maximum ratings, fT, and package with KSC2330YBU, but its lower gain affects DC operating point. Engineers must verify quiescent VCE and IC in-circuit before substitution, especially in chroma output stages where gain directly impacts modulation depth and color saturation.
What is the maximum allowable collector power dissipation for KSC2330RBU?
The KSC2330RBU has a maximum collector power dissipation (PC) of 1 W at Ta = 25 °C, derating linearly to zero at 150 °C junction temperature. At 75 °C ambient, the usable power drops to approximately 0.5 W per the published power derating curve. This rating assumes free-air convection cooling on a standard FR-4 PCB; no heatsink is required for typical chroma output duty cycles. The value is specified in the Absolute Maximum Ratings table of the onsemi KSC2330 datasheet Rev. 2.
Is KSC2330RBU suitable for switching applications?
Yes, KSC2330RBU is suitable for medium-speed switching applications such as chroma blanking, horizontal deflection auxiliary control, and video gate drivers, provided VCE(sat) = 0.5 V at IC = 10 mA and IB = 1 mA is acceptable for the target efficiency. Its 50 MHz fT and 4 pF Cob support switching frequencies up to several MHz, but it is not optimized for high-efficiency SMPS or RF switching. Designers should verify switching speed and storage time using the datasheet's typical characteristic curves before deploying KSC2330RBU in new switching topologies.
KSC2330RBU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 300 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 1mA, 10mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 40 @ 20mA, 10V
- Power - Max:
- 1 W
- Frequency - Transition:
- 50MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
KSC2330RBU FAQ
1.How can I place an order for KSC2330RBU through Aetrix?
Please submit a Request for Quotation (RFQ) for KSC2330RBU 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 KSC2330RBU reliable?
The price and inventory of KSC2330RBU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSC2330RBU is usually 5 days.
3.What payment methods are accepted for KSC2330RBU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSC2330RBU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSC2330RBU?
KSC2330RBU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSC2330RBU 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 KSC2330RBU?
For technical support, including KSC2330RBU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSC2330RBU requirements.
6.How does Aetrix verify that KSC2330RBU is sourced from the original manufacturer or authorized distributors?
All KSC2330RBU 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 KSC2330RBU meets industry standards.
7.What is the process for return or replacement of KSC2330RBU?
All KSC2330RBU units undergo pre-shipment inspection (PSI). If there is an issue with KSC2330RBU, 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 KSC2330RBU part is unused and in its original packaging.
Return procedure for KSC2330RBU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KSC2330RBU Tags
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