My Inquiry
My Account
onsemi KSC2330ABU
- Part No.:
- KSC2330ABU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body
- Datasheet:
-
KSC2330ABU.pdf
- Description:
- TRANS NPN 400V 0.1A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,067
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
KSC2330ABU from Fairchild Semiconductor is an NPN epitaxial silicon transistor designed for high-voltage chroma output stages in color TV systems, featuring VCBO = 400 V, VCEO = 400 V, IC = 100 mA, PC = 1 W, and fT = 50 MHz (typ.).
For engineers reviewing the KSC2330ABU datasheet, pinout, applications, or equivalent options, key selection criteria include high-voltage breakdown capability, DC current gain classification (R/O), saturation voltage under defined drive conditions, and TO-92L package thermal performance in linear video amplifier roles.
Technical Context
This device operates as a linear NPN switching/amplifier transistor with symmetrical 400 V collector-base and collector-emitter breakdown ratings, enabling use in high-voltage horizontal deflection and chroma driver circuits where stable gain and low saturation voltage are critical.
Its hFE classification (R: 40–65; O: 55–80) supports binning for consistent gain matching in production TV sets, while fT = 50 MHz ensures adequate bandwidth for chroma signal amplification without phase distortion at baseband frequencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCBO | 400 V - Withstands 400 V reverse bias between collector and base, suitable for flyback transformer primary-side switching in CRT deflection circuits. |
| VCEO | 400 V - Sustains 400 V between collector and emitter at zero base current, enabling direct replacement in high-voltage chroma output stages. |
| hFE (O-class) | 55–80 - Guaranteed DC current gain range at VCE = 10 V, IC = 20 mA, ensuring predictable biasing in linear video amplifier designs. |
| VCE(sat) | 0.5 V max at IC = 10 mA, IB = 1 mA - Low saturation voltage minimizes power loss and thermal stress during active conduction in pulse-driven chroma outputs. |
| fT | 50 MHz typ. at VCE = 30 V, IC = 10 mA - Supports faithful amplification of chroma subcarrier (3.58 MHz) with margin for harmonics and transient response. |
| Cob | 4 pF at VCB = 10 V, f = 1 MHz - Low output capacitance reduces high-frequency loading and improves stability in tuned RF/video amplifier configurations. |
Pinout & Package
Package: TO-92L (lead spacing 2.54 mm, body height ≤1.00 mm, lead diameter 0.45±0.10 mm), optimized for through-hole mounting and thermal dissipation in compact TV chassis layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Reference terminal for current sink operation; connected to ground or low-impedance return path in common-emitter chroma amplifier topology. |
| 2 | Collector | High-voltage output node; interfaces directly with chroma output transformer primary or load resistor in TV chroma circuitry. |
| 3 | Base | Current-controlled input; driven by preceding stage (e.g., chroma demodulator IC) to regulate collector current with minimal drive power. |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage rating | 400 V VCBO/VCEO enables safe operation in CRT TV horizontal deflection and chroma output circuits with peak supply transients. |
| Gain-binned hFE | O-class (55–80) and R-class (40–65) options allow production matching for consistent chroma signal amplitude across units. |
| Low VCE(sat) | ≤0.5 V at IC = 10 mA/IB = 1 mA reduces conduction loss and self-heating in continuously biased chroma driver stages. |
| TO-92L footprint | Standardized 3-pin through-hole package with 2.54 mm lead pitch ensures compatibility with legacy TV assembly lines and repair workflows. |
Applications
| Color TV Chroma Output Stage | Video Signal Amplifier |
|---|---|
Use Scenario: Final-stage amplification of 3.58 MHz chroma signal before modulation onto RF carrier in analog NTSC/PAL television receivers. IC Role / Device Role / Timing Role: Linear NPN transistor operating in Class-A or Class-AB mode to deliver low-distortion chroma current to output transformer. Use Value: 400 V breakdown rating withstands CRT flyback-induced voltage spikes; 50 MHz fT preserves chroma subcarrier fidelity. | Use Scenario: Baseband video amplification in composite video distribution circuits requiring DC-coupled gain and low noise. IC Role / Device Role / Timing Role: Single-ended emitter-follower or common-emitter amplifier for impedance buffering and level shifting of analog video signals. Use Value: 0.5 V VCE(sat) minimizes voltage headroom loss; hFE binning ensures repeatable gain calibration across production batches. |
| Horizontal Deflection Driver | High-Voltage Switching Node |
Use Scenario: Pre-driver for horizontal output transistor (HOT) in CRT TV sweep circuits, handling retrace pulses and damping waveforms. IC Role / Device Role / Timing Role: Fast-switching NPN transistor controlling base current of main HOT, synchronized to line frequency (15.734 kHz NTSC). Use Value: 400 V rating accommodates inductive kickback from deflection yoke; 4 pF Cob limits Miller effect during rapid turn-off. | Use Scenario: High-voltage switching node in auxiliary power supplies or EHT regulation circuits within CRT-based display systems. IC Role / Device Role / Timing Role: Voltage-controlled switch managing energy transfer in resonant or quasi-resonant converter topologies. Use Value: 1 W power dissipation and 150 °C junction rating support intermittent high-voltage duty cycles without thermal runaway. |
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 | Same die, hFE O-class (55–80), identical absolute maximum ratings and electrical characteristics; differs only in tape-and-reel packaging and date code format. | No functional difference; used interchangeably in same TV chroma output PCB designs. | Select KSC2330YBU for automated SMT-compatible reel delivery; KSC2330ABU remains optimal for manual through-hole assembly or repair. |
| 2SC3838 | VCBO = 300 V, VCEO = 300 V, fT = 60 MHz, TO-92L package, hFE = 60–120 - lower voltage rating but higher gain and bandwidth. | Suitable for lower-voltage video amplifiers or non-CRT applications; not recommended for 400 V chroma output due to insufficient breakdown margin. | Choose 2SC3838 only when system supply rails remain ≤250 V and higher fT is prioritized over voltage safety margin. |
Compared with KSC2330ABU, KSC2330YBU offers identical electrical behavior with packaging variation for automation, while 2SC3838 trades 100 V lower breakdown for higher gain and bandwidth-making it viable only in derated, non-CRT video circuits.
Availability
KSC2330ABU is available at Aetrix Electronics and suitable for color TV repair, analog video equipment refurbishment, and legacy CRT display manufacturing requiring stable component supply and long-term BOM continuity.
Supply support for KSC2330ABU 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
Fairchild Semiconductor was a U.S.-based semiconductor manufacturer specializing in discrete power devices, analog ICs, and interface solutions before its acquisition by ON Semiconductor in 2016.
The KSC2330ABU belongs to Fairchild's legacy high-voltage bipolar transistor family, engineered specifically for reliability and gain consistency in analog video signal paths of consumer CRT televisions.
FAQ
What is the pin configuration of the KSC2330ABU?
The KSC2330ABU uses a TO-92L package with pin 1 as Emitter, pin 2 as Collector, and pin 3 as Base. This configuration is standardized across Fairchild's KSC2330 series and verified in the September 2002 Rev. A2 datasheet. The KSC2330ABU must be mounted with correct pin orientation to avoid reverse-bias damage in chroma output circuits.
Is the KSC2330ABU suitable for modern LCD or OLED display designs?
The KSC2330ABU is not intended for modern flat-panel displays, as its design targets CRT-specific requirements including 400 V breakdown and chroma subcarrier amplification. Modern LCD/OLED timing controllers and power management ICs operate at lower voltages and integrate digital interfaces. The KSC2330ABU remains relevant only for CRT repair, legacy test equipment, or analog video signal conditioning where its specific gain and voltage specs are required.
What does the 'ABU' suffix indicate in KSC2330ABU?
The 'ABU' suffix denotes Fairchild's standard ordering code for the KSC2330A transistor in bulk TO-92L packaging with hFE classified as R-grade (40–65). It distinguishes this variant from YBU (O-grade, 55–80) and other tape-and-reel or automotive-grade versions. The KSC2330ABU datasheet confirms this classification under the "hFE Classification" table on page 1.
Can the KSC2330ABU replace the KSC2330YBU in a circuit?
Yes, the KSC2330ABU can replace the KSC2330YBU in most circuits because both share identical die characteristics, absolute maximum ratings, and electrical parameters-the only differences are hFE binning (R vs. O) and packaging format. If the original design specifies O-grade gain, substituting KSC2330ABU (R-grade) may require bias adjustment. The KSC2330ABU remains electrically compatible in all other respects.
What is the maximum power dissipation of the KSC2330ABU at 70°C ambient?
The KSC2330ABU has a rated collector power dissipation of 1 W at Ta = 25°C, with linear derating above 25°C at 8 mW/°C as shown in Figure 5 ("Power Derating") of the datasheet. At 70°C ambient, maximum allowable PC = 1 W − (70−25) × 0.008 W = 0.64 W. Exceeding this limit risks junction temperature exceeding 150°C, potentially degrading the KSC2330ABU's long-term reliability in chroma output applications.
KSC2330ABU 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):
- 400 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
KSC2330ABU FAQ
1.How can I place an order for KSC2330ABU through Aetrix?
Please submit a Request for Quotation (RFQ) for KSC2330ABU 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 KSC2330ABU reliable?
The price and inventory of KSC2330ABU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSC2330ABU is usually 5 days.
3.What payment methods are accepted for KSC2330ABU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSC2330ABU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSC2330ABU?
KSC2330ABU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSC2330ABU 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 KSC2330ABU?
For technical support, including KSC2330ABU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSC2330ABU requirements.
6.How does Aetrix verify that KSC2330ABU is sourced from the original manufacturer or authorized distributors?
All KSC2330ABU 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 KSC2330ABU meets industry standards.
7.What is the process for return or replacement of KSC2330ABU?
All KSC2330ABU units undergo pre-shipment inspection (PSI). If there is an issue with KSC2330ABU, 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 KSC2330ABU part is unused and in its original packaging.
Return procedure for KSC2330ABU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KSC2330ABU Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
