Part Details for START499D by STMicroelectronics
Results Overview of START499D by STMicroelectronics
- Distributor Offerings: (3 listings)
- Number of FFF Equivalents: (0 replacements)
- Tariff Estimator: (Not Available)
- Number of Functional Equivalents: (0 options)
- CAD Models: (Request Part)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
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START499D Information
START499D by STMicroelectronics is an RF Small Signal Bipolar Transistor.
RF Small Signal Bipolar Transistors are under the broader part category of Transistors.
A transistor is a small semiconductor device used to amplify, control, or create electrical signals. When selecting a transistor, factors such as voltage, current rating, gain, and power dissipation must be considered, with common types. Read more about Transistors on our Transistors part category page.
Price & Stock for START499D
| Part # | Distributor | Description | Stock | Price | Buy | |
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Bristol Electronics | Trans RF BJT NPN 4.5V 1A 1700mW 4-Pin(3+Tab) SOT-89 T/R | 2425 |
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RFQ | |
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Quest Components | RF SMALL SIGNAL BIPOLAR TRANSISTOR, 1A I(C), 1-ELEMENT, NPN | 1940 |
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$0.2000 / $1.0000 | Buy Now |
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Vyrian | RF Small Signal Bipolar Transistor, 1A I(C), 1-Element, NPN | 6098 |
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RFQ |
START499D Part Data Attributes
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START499D
STMicroelectronics
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Datasheet
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START499D
STMicroelectronics
RF Small Signal Bipolar Transistor, 1A I(C), 1-Element, NPN
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| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Package Description | Rohs Compliant, Plastic Package-3 | |
| Pin Count | 3 | |
| ECCN Code | EAR99 | |
| Collector Current-Max (IC) | 1 A | |
| Configuration | Single | |
| JESD-30 Code | R-PSSO-F3 | |
| JESD-609 Code | e3 | |
| Moisture Sensitivity Level | 1 | |
| Number of Elements | 1 | |
| Number of Terminals | 3 | |
| Operating Temperature-Max | 150 °C | |
| Package Body Material | Plastic/Epoxy | |
| Package Shape | Rectangular | |
| Package Style | Small Outline | |
| Peak Reflow Temperature (Cel) | 260 | |
| Polarity/Channel Type | Npn | |
| Power Dissipation-Max (Abs) | 1.7 W | |
| Qualification Status | Not Qualified | |
| Surface Mount | Yes | |
| Terminal Finish | Matte Tin | |
| Terminal Form | Flat | |
| Terminal Position | Single | |
| Time@Peak Reflow Temperature-Max (s) | 30 |
START499D Frequently Asked Questions (FAQ)
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STMicroelectronics provides a recommended PCB layout in the application note AN5323, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
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The input capacitor selection depends on the input voltage, current, and frequency. A general guideline is to choose a capacitor with a voltage rating at least 1.5 times the maximum input voltage, and a capacitance value between 1uF to 10uF. The datasheet provides more detailed guidance on capacitor selection.
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The START499D is rated for operation up to 125°C ambient temperature, but it's recommended to derate the device's power dissipation to ensure reliable operation. The datasheet provides a thermal derating curve to help designers determine the maximum power dissipation at different ambient temperatures.
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The START499D has a built-in OVP feature that can be enabled by connecting the OVP pin to a voltage divider network. The OVP threshold can be set by selecting the appropriate resistor values. The application note AN5323 provides a detailed example of OVP implementation.
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The output capacitor value and type depend on the output voltage, current, and ripple requirements. A general guideline is to use a low-ESR ceramic capacitor with a value between 10uF to 47uF. The datasheet provides more detailed guidance on output capacitor selection.