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FAQ NO : 1007210 Issue Date : Feb.01.09 Functions : Discretes - General Please explain the package markings. The package marking generally includes the part name, the rank (when the part has some kinds of ranks), and the lot number. Note, however, that due to space limitations, some of the above might be abbreviated or indicated as symbols. The marking metho... Relevant Products Thyristors and Triacs Transistor Diode
FAQ NO : 1007176 Issue Date : Jul.01.08 Functions : Discretes - General What is the junction-case thermal resistance of the SC-59 (minimold) and SC-62 (power minimold) packages? The junction-case thermal resistance of neither package is specified (there is no specification for the total dissipation at Tc = 25°C). Please use the following "Total Power Dissipation vs. Ambient Temperature" characteristics graph, which is include... Relevant Products Thyristors and Triacs Transistor Diode
FAQ NO : 1007173 Issue Date : Jul.01.08 Functions : Discretes - General The data sheet does not include a description of the thermal resistance. How can I calculate it? The thermal resistance can be calculated based on the total dissipation (PT) described in the data sheet. Junction-to-ambient Rth (j-a) = (Tj-Ta)/PT Junction-to-case Rth (j-c) = (Tj-Tc)/PT Taking the 2SD1588 as an example, the thermal resistance is ... Relevant Products Thyristors and Triacs Transistor Diode
FAQ NO : 1007209 Issue Date : Feb.01.08 Functions : Discretes - General What do the symbols of the absolute maximum ratings of transistors and FETs represent? The symbols mean the following. In V(1)(2)(3), the symbols stand for the following: (1) Pin to be measured (2) Reference pin (3) Status of connection between the reference pin of (2) and a pin other than the pin of (1) or (2) S: Short O: Open X: Appli... Relevant Products Thyristors and Triacs Transistor Diode
FAQ NO : 1007183 Issue Date : Feb.01.08 Functions : Discretes - General The FAQ has the following about the operating temperature range: "Use with derating so that the junction temperature does not exceed 150°C." What exactly should be done for this derating? When a case temperature is 100°C in the example shown in the figure, in order to operate in the safe operating range, the power consumption must be limited to less than 40% of that at 25°C. Derating refers to lowering the usage conditions, taking into... Relevant Products Thyristors and Triacs Transistor Diode
FAQ NO : 1007159 Issue Date : Feb.01.08 Functions : Discretes - General How is the specification for automotive electronics in discrete products different from one for general-purpose? The automotive specification product has higher quality and reliability than the general-purpose product because the reliability standards for automotive products, in addition to those for general-purpose products, are specifically defined so that the... Relevant Products Thyristors and Triacs Transistor Diode
FAQ NO : 1008065 Issue Date : Nov.01.07 Functions : Discretes - General I have heard that hFE degradation occurs during extended use. What causes hFE degradation, and are there any countermeasures? hFE degradation may occur due to prolonged use of circuits in which a voltage near or exceeding the reverse bias breakdown voltage (emitter-base voltage VEBO) is repeatedly applied, even momentarily, between the emitter and base of the transistor. The... Relevant Products Transistor
FAQ NO : 1008082 Issue Date : Nov.01.07 Functions : Discretes - General When using a transistor for amplification, about how long are the turn-on and turn-off times? An amplification transistor is not used for switching, so these times are not prescribed. If you need switching characteristics, please use a switching transistor. Relevant Products Transistor
FAQ NO : 1007167 Issue Date : Apr.01.07 Functions : Discretes - General What items do I need to confirm when selecting a transistor or MOS FET? You should confirm at least the following items. Rating of VCEO and VDSS → Power supply voltage + margin Rating of IC and ID → Load current + margin Package → Size and mounting method Rating of PT → Maximum ambient temperature during use hFE and gate ... Relevant Products Thyristors and Triacs Transistor Diode
FAQ NO : 1007137 Issue Date : Apr.01.07 Functions : Discretes - General Please tell me how to find the pin 1 position in a 4-pin or 6-pin package. When placing the package in a direction that you can read the marking, Pin 1 is the pin in the bottom left corner. In the RF & microwave products, the Pin 1 position varies from one product to another. Refer to the data sheet of each product. ... Relevant Products Thyristors and Triacs Transistor Diode

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