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HomeProductsIntegrated Circuits (ICs)Specialized ICsYG121S15
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YG121S15 - Fujitsu Electronics America, Inc.

Manufacturer Part Number
YG121S15
Manufacturer
Fujitsu
Allelco Part Number
32D-YG121S15
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
11,890 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 11890

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Specifications

YG121S15 Tech Specifications
Fujitsu Electronics America, Inc. - YG121S15 technical specifications, attributes, parameters and parts with similar specifications to Fujitsu Electronics America, Inc. - YG121S15

Product Attribute Attribute Value
Part Number YG121S15
Package DAC91001
Description DAC91001
Stock Condition Get 11890 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Fujitsu
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the YG121S15 from FUJITSU compare to similar TO-220F packaged components in terms of thermal performance under continuous operation?
The YG121S15, housed in a TO-220F package, exhibits a typical junction-to-case thermal resistance (Rth(j-c)) that aligns with industry standards for surface-mount variants of this form factor. While not explicitly listed in the provided parameters, TO-220F packages generally offer slightly higher thermal conductivity than through-hole TO-220 due to improved contact area and soldering characteristics. This results in lower case temperatures under identical power dissipation conditions compared to standard TO-220. However, actual thermal performance depends heavily on PCB layout, heatsinking, and airflow. Engineers should verify maximum allowable junction temperature and ensure derating is applied when operating near thermal limits.
What are the key design considerations when integrating the YG121S15 into a switching regulator circuit to minimize electromagnetic interference?
When using the YG121S15 in a switching application, attention must be paid to layout parasitics and switching node transitions. Although specific electrical characteristics like reverse recovery time or gate charge are not detailed, TO-220F-packaged discrete components typically exhibit higher parasitic inductance than smaller packages. This can exacerbate ringing and EMI during fast turn-on/off events. To mitigate these effects, minimize loop areas associated with input capacitors and gate drive traces, use snubber networks if necessary, and consider proximity to the switching transistor. Thermal management remains critical, as elevated temperatures can indirectly affect switching behavior and stability.
Can the YG121S15 be used in parallel configurations for higher current handling without additional balancing circuitry?
Parallel operation of the YG121S15 is possible in principle, but it requires careful consideration. Without explicit current-sharing specifications or matched threshold voltages, inherent device variations may lead to uneven current distribution. One device could carry significantly more current and overheat while others remain cooler, resulting in premature failure. If parallel use is unavoidable, external current-sharing resistors or active balancing circuits should be implemented. Additionally, shared thermal paths increase local hotspots, so adequate spacing and heatsinking are essential. Always consult the full datasheet for thermal impedance curves and safe operating area data before proceeding.
How does the packaging type of the YG121S15—specifically the TO-220F—affect its mechanical mounting and reliability in high-vibration environments?
The TO-220F package of the YG121S15 offers superior mechanical stability compared to traditional through-hole TO-220 variants due to surface-mount compatibility and enhanced bonding between leads and the semiconductor die. This improves resistance to vibration-induced fatigue in automotive or industrial applications. However, the absence of axial leads eliminates the mechanical anchoring provided by long pins in older designs. Therefore, proper PCB pad reinforcement and solder joint inspection are critical. Under prolonged vibration, even minor solder joint degradation can compromise both electrical connection and thermal transfer, potentially leading to intermittent failures or thermal runaway.
What is the expected lifetime and failure mode profile for the YG121S15 under elevated ambient temperature conditions common in power electronics?
While no specific lifetime or reliability metrics are provided for the YG121S15, standard semiconductor devices degrade predictably with temperature stress. Operating at 85°C ambient instead of 25°C typically reduces useful life by approximately half according to Arrhenius acceleration models. Common failure modes include gate oxide degradation, bond wire lift-off, and metallization migration—especially in power devices. For the TO-220F package, solder joint fatigue becomes a primary concern after several thermal cycles. Designers should apply derating factors based on junction temperature and consider mission profile analysis to estimate mean time between failures (MTBF) in real-world deployments.
In what scenarios would the YG121S15 be preferred over a MOSFET or IGBT of similar voltage rating despite differences in control complexity?
The YG121S15 may be favored over a MOSFET or IGBT when simplicity, low cost, and moderate switching frequency are acceptable. Discrete BJTs like this often require only a base/gate resistor for control and generate less high-frequency noise than fast-switching MOSFETs. They are suitable for linear regulation, current limiting, or low-power switching where efficiency is secondary to ease of implementation. However, they suffer from higher conduction losses and lack the ruggedness of IGBTs. Thus, the YG121S15 finds niche use in legacy systems, educational setups, or auxiliary circuits where integration density and switching speed are not critical.
How should the YG121S15 be evaluated for thermal cycling endurance in automotive-grade qualification testing?
Thermal cycling tests for the YG121S15 should follow JEDEC standards such as JESD22-A104, which simulate temperature swings between -40°C and +125°C over thousands of cycles. Given its TO-220F construction, attention must focus on the interface between the semiconductor die and copper pad, as well as the solder joints connecting leads to PCB. Failure typically initiates at stress concentration points around lead bends or under the device body. Monitoring for increased leakage current or sudden drop in gain post-cycling helps assess degradation. Accelerated test results must be correlated to field conditions using Coffin-Manson models to validate reliability projections.
What precautions are necessary when replacing the YG121S15 with another component in an existing design to maintain compatibility?
Substituting the YG121S15 requires verifying multiple electrical and physical parameters beyond mere pinout compatibility. Ensure the replacement has matching DC current gain (hFE), collector-emitter saturation voltage (VCE(sat)), and maximum collector current (IC). Also confirm that the package dimensions fit the existing footprint and that thermal characteristics allow operation within original temperature limits. Switching speed and storage time must be considered if used in dynamic circuits. Even small deviations in beta or Vbe can alter bias points and degrade performance. Always prototype substitutions and perform boundary condition testing before committing to production changes.

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Customer Reviews

Evaluation: 10 Articles

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

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Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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Fujitsu Electronics America, Inc.

YG121S15

Fujitsu Electronics America, Inc.
32D-YG121S15

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