My Inquiry
My Account
onsemi KSC1507OTU
- Part No.:
- KSC1507OTU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-220-3
- Datasheet:
-
KSC1507OTU.pdf
- Description:
- TRANS NPN 300V 200UA TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,220
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
KSC1507OTU from ON Semiconductor (formerly Fairchild) is an NPN epitaxial silicon power transistor designed for high-voltage chroma output stages in color TV systems, featuring VCEO = 300 V, fT ≥ 40 MHz, and PC = 15 W at TC = 25°C.
For engineers reviewing the KSC1507OTU datasheet, pinout, applications, or equivalent options, key selection criteria include high-voltage breakdown capability, DC current gain classification (R/O/Y), saturation voltage under defined drive conditions, and TO-220 thermal derating behavior.
Technical Context
This device operates as a linear-switching NPN bipolar junction transistor optimized for chroma signal amplification in analog CRT television receivers. Its 300 V collector-emitter and collector-base breakdown ratings support operation across full video scan-line swing without avalanche conduction.
The KSC1507OTU delivers hFE = 40–240 (depending on classification grade), VCE(sat) = 2.0 V at IC = 50 mA/IB = 5 mA, and Cob = 4 pF at VCB = 50 V - parameters critical for maintaining chroma fidelity, minimizing intermodulation distortion, and enabling stable RF-stage interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCBO / VCEO | 300 V - enables safe operation in high-swing chroma output circuits with peak video transients up to 300 V |
| IC (max) | 0.2 mA - specifies maximum continuous collector current rating under linear operation |
| PC (TC=25°C) | 15 W - defines maximum dissipation at case temperature 25°C; requires heatsinking above ~50°C ambient |
| fT (min) | 40 MHz - ensures adequate bandwidth for chroma subcarrier (3.58 MHz) amplification with margin |
| hFE range | 40–240 - graded per R/O/Y binning; impacts bias stability and gain consistency in production sets |
| VCE(sat) | 2.0 V @ IC=50mA/IB=5mA - determines minimum headroom and power loss during saturated switching |
| Cob | 4 pF @ VCB=50V - limits high-frequency feedback and stabilizes amplifier stage phase margin |
Pinout & Package
Package: TO-220 (3-lead, straight lead, insulated tab). Dimensions conform to JEDEC TO-220AB standard with mechanical mounting hole (ø3.60 mm) and specified thermal pad layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Current-controlled input terminal | Receives base drive current to modulate collector current; requires external bias network for stable Q-point |
| 2 (Collector) | Main high-current, high-voltage output terminal | Connected to chroma load (e.g., CRT grid or IF transformer primary); carries full output current and voltage swing |
| 3 (Emitter) | Common reference terminal | Typically grounded or connected to cathode return path; establishes emitter-base voltage reference for biasing |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage capability | VCEO = VCB0 = 300 V - supports direct interface with CRT anode supply rails and flyback-derived voltages |
| Chroma-optimized fT | fT ≥ 40 MHz - preserves 3.58 MHz chroma subcarrier amplitude and phase integrity across temperature |
| Graded hFE bins | R/O/Y classifications (40–80 / 70–140 / 120–240) - enables matched-pair selection for differential chroma drivers |
| Low-output capacitance | Cob = 4 pF - minimizes Miller effect and improves high-frequency stability in tuned amplifier configurations |
Applications
| Color TV Chroma Output Stage | Video Monitor Chroma Driver |
|---|---|
Use Scenario: Amplifying 3.58 MHz chroma subcarrier signals in analog CRT-based color television receivers prior to CRT grid modulation. IC Role / Device Role / Timing Role: Linear NPN power transistor operating in Class-A or Class-AB mode to deliver low-distortion chroma current to the CRT electron gun. Use Value: 300 V VCEO rating accommodates full video line swing; 40 MHz fT ensures minimal chroma delay and group delay variation. | Use Scenario: Driving chroma signal paths in professional broadcast monitors requiring stable color fidelity and wide dynamic range. IC Role / Device Role / Timing Role: High-voltage output stage transistor in chroma demodulator-to-CRT interface circuitry. Use Value: Graded hFE (R/O/Y) allows factory calibration of chroma gain matching; TO-220 package enables reliable heatsinking at 15 W dissipation. |
| Legacy CRT Display Power Amplifier | Analog Video Signal Repeater |
Use Scenario: Boosting chroma signal amplitude in retro-style CRT display modules where modern ICs lack compatible voltage ratings. IC Role / Device Role / Timing Role: Discrete high-voltage gain element replacing obsolete hybrid modules in repair and refurbishment contexts. Use Value: Direct replacement for KSC1507-series parts; same pinout and thermal profile simplifies drop-in service substitution. | Use Scenario: Re-amplifying composite or S-video chroma components in analog video distribution systems with long cable runs. IC Role / Device Role / Timing Role: Line-driver transistor compensating for chroma attenuation over coaxial transmission paths. Use Value: Low Cob (4 pF) and controlled VCE(sat) reduce chroma crosstalk and preserve subcarrier SNR over extended bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN high-voltage power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJE13009 | VCEO = 400 V, fT = 4 MHz (lower), PC = 100 W - higher voltage but significantly lower bandwidth | Better suited for SMPS switching than chroma linear amplification due to lower fT | Select only if voltage margin >300 V is required and chroma fidelity is secondary |
| KSC2383Y | VCEO = 200 V, fT = 100 MHz, hFE = 120–240 - lower voltage, higher fT, same hFE grade Y | Compatible for lower-voltage chroma stages but cannot replace KSC1507OTU in 300 V designs | Use where system rail voltage ≤200 V and extended bandwidth is prioritized over voltage headroom |
Compared with MJE13009 and KSC2383Y, the KSC1507OTU uniquely balances 300 V operation, 40+ MHz bandwidth, and graded hFE - making it irreplaceable in legacy color TV chroma output circuits where both voltage and frequency performance are simultaneously constrained.
Availability
KSC1507OTU is available at Aetrix Electronics and suitable for color TV repair, CRT monitor refurbishment, and analog video signal conditioning requiring stable component supply and long-lifecycle support.
Supply support for KSC1507OTU 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
ON Semiconductor is a global semiconductor supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and consumer electronics markets.
The KSC1507OTU belongs to Fairchild's legacy high-voltage bipolar transistor product line, engineered specifically for analog video signal amplification in CRT-based television and display systems.
FAQ
What is the maximum collector-emitter voltage rating for the KSC1507OTU?
The KSC1507OTU has a maximum collector-emitter voltage rating (VCEO) of 300 V at TC = 25°C. This rating is confirmed in the Absolute Maximum Ratings table and applies under open-base conditions with IC = 10 mA. Exceeding this voltage risks avalanche breakdown and permanent device failure. Derating is required above 25°C case temperature per the published power derating curve.
Does the KSC1507OTU have a specified current gain (hFE) range, and how is it binned?
Yes, the KSC1507OTU is binned into three hFE classifications: R (40–80), O (70–140), and Y (120–240), measured at VCE = 10 V and IC = 10 mA. The suffix "OTU" does not indicate binning - actual hFE grade is marked separately on the device body. This binning enables consistent bias point setting and gain matching in production TV sets.
What package type is used for the KSC1507OTU, and is the tab electrically isolated?
The KSC1507OTU uses a TO-220AB package with three leads (Base, Collector, Emitter) and an insulated metal tab. Per the package drawing and Fairchild documentation, the tab is electrically isolated from all internal terminals and rated for 2500 V isolation - allowing direct mounting to a heatsink without additional insulation when used in grounded-emitter configurations.
Can the KSC1507OTU be used in switching power supply applications?
The KSC1507OTU is not recommended for switching power supplies. Its fT = 40–80 MHz and relatively high VCE(sat) = 2.0 V make it inefficient for high-frequency PWM operation. It was designed for linear chroma amplification, not hard switching. For SMPS, devices like MJE13009 or FJP13009 offer better switching speed and lower saturation losses.
Is the KSC1507OTU RoHS compliant?
The KSC1507OTU is a legacy Fairchild part released in 2002, predating RoHS enforcement. Original manufacturing did not comply with RoHS Directive 2002/95/EC. Aetrix Electronics supplies only RoHS-compliant re-manufactured or sourced equivalents where available; please consult our compliance team for current status and exemption documentation for legacy use cases.
KSC1507OTU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 200 µA
- Voltage - Collector Emitter Breakdown (Max):
- 300 V
- Vce Saturation (Max) @ Ib, Ic:
- 2V @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 100µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 70 @ 10mA, 10V
- Power - Max:
- 15 W
- Frequency - Transition:
- 80MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
KSC1507OTU FAQ
1.How can I place an order for KSC1507OTU through Aetrix?
Please submit a Request for Quotation (RFQ) for KSC1507OTU 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 KSC1507OTU reliable?
The price and inventory of KSC1507OTU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSC1507OTU is usually 5 days.
3.What payment methods are accepted for KSC1507OTU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSC1507OTU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSC1507OTU?
KSC1507OTU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSC1507OTU 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 KSC1507OTU?
For technical support, including KSC1507OTU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSC1507OTU requirements.
6.How does Aetrix verify that KSC1507OTU is sourced from the original manufacturer or authorized distributors?
All KSC1507OTU 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 KSC1507OTU meets industry standards.
7.What is the process for return or replacement of KSC1507OTU?
All KSC1507OTU units undergo pre-shipment inspection (PSI). If there is an issue with KSC1507OTU, 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 KSC1507OTU part is unused and in its original packaging.
Return procedure for KSC1507OTU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KSC1507OTU 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…
