Details

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Below is the parameter table for the 2SA1694 (PNP) and 2SC4467 (NPN) transistors, along with some basic instructions for their use.

Parameter Table

Parameter	2SA1694 (PNP)	2SC4467 (NPN)
Collector-Emitter Voltage (VCEO)	50 V	50 V
Emitter-Base Voltage (VEBO)	5 V	5 V
Collector Current (IC)	1 A	1 A
Power Dissipation (PT)	62.5 W	62.5 W
Base-Emitter Saturation Voltage (VBE(sat))	1.2 V (max)	1.2 V (max)
Collector-Emitter Saturation Voltage (VCE(sat))	0.3 V (max)	0.3 V (max)
Current Gain (hFE)	50 - 300	50 - 300
Transition Frequency (fT)	10 MHz	10 MHz
Storage Temperature Range (TSTG)	-55掳C to +150掳C	-55掳C to +150掳C
Operating Temperature Range (TA)	-55掳C to +150掳C	-55掳C to +150掳C

Instructions for Use

General Guidelines

1. Heat Dissipation: Both transistors can dissipate up to 62.5 W of power. Ensure proper heat sinking if operating near the maximum power dissipation to prevent thermal damage.
2. Voltage Ratings: Do not exceed the maximum collector-emitter voltage (V_CEO) or emitter-base voltage (V_EBO) ratings.
3. Current Ratings: The maximum collector current (I_C) should not be exceeded. Use appropriate current limiting resistors if necessary.
4. Temperature Range: Operate within the specified temperature range to ensure reliable performance and longevity.

Circuit Design

1. Biasing: Proper biasing is crucial for stable operation. Use a voltage divider network or other suitable method to set the base voltage.
2. Saturation: For switching applications, ensure that the transistor is driven into saturation to minimize V_CE(sat) and power loss.
3. Current Gain: Consider the wide range of h_FE when designing circuits. Use feedback or other techniques to stabilize gain if necessary.
4. Frequency Response: These transistors are suitable for low to medium frequency applications (up to 10 MHz). For higher frequencies, consider using faster transistors.

Handling

1. ESD Protection: Handle these transistors with care to avoid electrostatic discharge (ESD) damage. Use grounded wrist straps and anti-static mats.
2. Mounting: When mounting on a PCB, ensure that the leads are properly soldered and that the transistor is securely attached to any heat sinks if required.

By following these guidelines, you can effectively use the 2SA1694 and 2SC4467 transistors in your electronic designs.

(For reference only)