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onsemi KSC2223YMTF
- Part No.:
- KSC2223YMTF
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
KSC2223YMTF.pdf
- Description:
- TRANS NPN 20V 0.02A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:114,000
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Product details
Overview
KSC2223YMTF from ON Semiconductor (formerly Fairchild) is an NPN epitaxial silicon transistor optimized for high-frequency amplifier applications, with fT = 600 MHz (typ), Cob = 1 pF (typ), NF = 3 dB (typ) at 100 MHz, VCEO = 20 V, and IC = 20 mA - deployed in hybrid IC RF front-ends and VHF/UHF signal amplification stages.
For engineers reviewing the KSC2223YMTF datasheet, pinout, applications, or equivalent options, key selection criteria include its SOT-23 package footprint, hFE grade Y (90–180), low-noise RF performance, and suitability for compact broadband amplifiers requiring stable gain above 100 MHz.
Technical Context
This transistor employs epitaxial base construction to achieve high fT and low Cob, enabling operation in VHF and low-UHF bands. Its hFE classification Y specifies DC current gain between 90 and 180 at VCE = 6 V and IC = 1 mA, with VCE(sat) ≤ 0.3 V at IC = 10 mA / IB = 1 mA.
Noise figure is characterized at 3 dB (typ) under 100 MHz, 50 Ω source impedance, supporting low-noise preamplifier design. The device operates within a junction temperature range of –55°C to +150°C and exhibits Cc·rbb = 12 ps at 31.9 MHz, confirming tight high-speed switching capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20 V - maximum safe collector-emitter voltage before breakdown in common-emitter configuration |
| fT | 600 MHz (typ) - usable small-signal amplification bandwidth limit at IC = 1 mA |
| Cob | 1 pF (typ) at VCB = 6 V - low output capacitance enabling wideband matching and minimal Miller effect |
| NF | 3 dB (typ) at f = 100 MHz, RS = 50 Ω - low noise floor suitable for RF preamp stages |
| hFE (Y grade) | 90–180 - guaranteed DC current gain range supporting predictable bias stability in amplifier designs |
| VCE(sat) | ≤0.3 V at IC = 10 mA, IB = 1 mA - low saturation voltage enabling efficient Class-A/AB operation |
| PC | 150 mW - thermal power limit in SOT-23 package at TA = 25°C, derating linearly above 25°C |
Pinout & Package
Package: SOT-23 - surface-mount, 3-pin plastic package with 1.90 mm × 1.30 mm footprint, 0.95 mm height, and standard lead pitch of 0.95 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal for forward-biased junction; requires ~0.7 V VBE(on) to activate conduction |
| 2 | Emitter | Current sink terminal; connected to ground or low-impedance return path in common-emitter amplifiers |
| 3 | Collector | Output current source terminal; biased positively relative to emitter for active-region operation |
Key Features
| Feature | Design Value |
|---|---|
| High fT performance | 600 MHz typical gain-bandwidth product enables stable amplification up to VHF band (30–300 MHz) |
| Low output capacitance | 1 pF typical Cob minimizes frequency-dependent gain roll-off and improves impedance matching |
| Low-noise RF operation | 3 dB typical noise figure at 100 MHz supports sensitive receiver front-end and LNA applications |
| Compact SOT-23 footprint | 1.90 × 1.30 mm outline allows dense placement in hybrid ICs and space-constrained RF modules |
| Graded hFE binning | Y-grade (90–180) ensures consistent DC bias point across production lots for repeatable amplifier gain |
Applications
| FM Radio Front-End Amplifier | VHF Wireless Microphone Preamp |
|---|---|
Use Scenario: Amplifying weak 88–108 MHz FM broadcast signals prior to mixer stage in portable receivers. IC Role / Device Role / Timing Role: NPN RF amplifier operating in common-emitter configuration with fixed bias network. Use Value: 600 MHz fT and 3 dB NF ensure adequate gain margin and SNR preservation across full FM band. | Use Scenario: Boosting microphone-level audio-modulated RF carrier (174–216 MHz) before transmission. IC Role / Device Role / Timing Role: Low-noise voltage amplifier in transmitter's modulation chain with emitter degeneration. Use Value: 1 pF Cob and Y-grade hFE enable stable broadband gain without peaking or oscillation. |
| UHF Remote Control Receiver | Hybrid IC RF Filter Driver |
Use Scenario: First-stage amplification of 315/433 MHz ASK/OOK signals in garage door openers and key fobs. IC Role / Device Role / Timing Role: High-input-impedance common-base amplifier for improved isolation and bandwidth. Use Value: 20 V VCEO withstands transient spikes in unregulated battery-powered systems; 150 mW PC supports continuous receive duty cycle. | Use Scenario: Driving ceramic or SAW filters in miniature hybrid RF modules where board space is constrained. IC Role / Device Role / Timing Role: Impedance-matching buffer amplifier placed directly after filter output. Use Value: SOT-23 footprint aligns with filter pad layout; low Cob prevents filter detuning and passband distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN RF amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBT2222ALT1G | fT = 300 MHz (max), Cob = 8 pF - lower bandwidth and higher capacitance than KSC2223YMTF | Less suitable for >200 MHz amplification; better for general-purpose switching or low-VHF use | Select when cost sensitivity outweighs VHF/UHF performance needs and layout allows larger Cob tolerance |
| 2SC3356(TE85L,F) | fT = 7 GHz (min), Cob = 0.3 pF - significantly higher frequency capability and lower capacitance | Targeted for UHF/SHF LNA and oscillator circuits beyond KSC2223YMTF's 600 MHz ceiling | Choose for 433 MHz+ ISM band designs requiring extended gain flatness and ultra-low noise |
Compared with MMBT2222ALT1G and 2SC3356(TE85L,F), the KSC2223YMTF delivers optimal balance of VHF gain, noise, and size for cost-sensitive hybrid RF modules - neither over-specified nor bandwidth-limited for 100–300 MHz applications.
Availability
KSC2223YMTF is available at Aetrix Electronics and suitable for FM radio receivers, wireless microphones, UHF remote controls, and hybrid IC RF filter drivers requiring stable component supply with traceable lot history and full RoHS compliance.
Supply support for KSC2223YMTF 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The KSC2223YMTF belongs to Fairchild's legacy RF transistor product line, designed specifically for compact, high-frequency analog amplification in hybrid and surface-mount RF subsystems.
FAQ
What is the hFE range for KSC2223YMTF?
The KSC2223YMTF is binned to the Y-grade hFE classification, guaranteeing a DC current gain of 90 to 180 when measured at VCE = 6 V and IC = 1 mA. This range ensures predictable biasing in RF amplifier designs and is laser-marked on the SOT-23 package as "Y". The KSC2223YMTF's hFE remains stable across its specified operating temperature range.
Is KSC2223YMTF suitable for low-noise amplifier (LNA) applications?
Yes, the KSC2223YMTF is explicitly characterized for low-noise operation, with a typical noise figure of 3 dB at 100 MHz and RS = 50 Ω. Its low Cob (1 pF) and high fT (600 MHz) support stable LNA designs in VHF bands. The KSC2223YMTF is commonly used in FM radio and wireless microphone front-ends where SNR preservation is critical.
What is the maximum collector current rating for KSC2223YMTF?
The absolute maximum collector current for KSC2223YMTF is 20 mA, as specified in the Absolute Maximum Ratings table. Continuous operation above this value risks thermal runaway or junction degradation. For reliable 10–15 mA amplifier biasing, the KSC2223YMTF maintains VCE(sat) ≤ 0.3 V and hFE within its Y-grade window.
Does KSC2223YMTF have a documented SOT-23 pinout configuration?
Yes - the KSC2223YMTF uses standard SOT-23 pinout: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector. This configuration is confirmed in the official Fairchild datasheet Rev. A3 (September 2002), including mechanical drawings and marking diagram. The KSC2223YMTF's pinout is identical to industry-standard NPN SOT-23 transistors such as MMBT2222A.
What is the junction temperature limit for KSC2223YMTF?
The KSC2223YMTF has a maximum junction temperature (TJ) rating of +150°C and a storage temperature range of –55°C to +150°C. Derating begins at 25°C ambient, with linear reduction of PC (150 mW) by 1.2 mW/°C above that point. Proper PCB copper pour and thermal relief design are recommended to maintain KSC2223YMTF junction temperature within limits during sustained RF operation.
KSC2223YMTF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 20 mA
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 1mA, 10mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 90 @ 1mA, 6V
- Power - Max:
- 150 mW
- Frequency - Transition:
- 600MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
KSC2223YMTF FAQ
1.How can I place an order for KSC2223YMTF through Aetrix?
Please submit a Request for Quotation (RFQ) for KSC2223YMTF 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 KSC2223YMTF reliable?
The price and inventory of KSC2223YMTF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSC2223YMTF is usually 5 days.
3.What payment methods are accepted for KSC2223YMTF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSC2223YMTF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSC2223YMTF?
KSC2223YMTF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSC2223YMTF 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 KSC2223YMTF?
For technical support, including KSC2223YMTF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSC2223YMTF requirements.
6.How does Aetrix verify that KSC2223YMTF is sourced from the original manufacturer or authorized distributors?
All KSC2223YMTF 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 KSC2223YMTF meets industry standards.
7.What is the process for return or replacement of KSC2223YMTF?
All KSC2223YMTF units undergo pre-shipment inspection (PSI). If there is an issue with KSC2223YMTF, 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 KSC2223YMTF part is unused and in its original packaging.
Return procedure for KSC2223YMTF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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