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Product Detailed Parameters
- Description：TRANS 4NPN DARL 60V 1A 10SIP
- Series：-
- Mfr：Sanken Electric USA Inc.
- Package：Bulk
- Transistor Type：4 NPN Darlington (Quad)
- Current - Collector (Ic) (Max)：1A
- Voltage - Collector Emitter Breakdown (Max)：60V
- Vce Saturation (Max) @ Ib, Ic：1.5V @ 1mA, 500mA
- Current - Collector Cutoff (Max)：10µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：2000 @ 500mA, 4V
- Power - Max：4W
- Frequency - Transition：50MHz
- Operating Temperature：150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：10-SIP
- Supplier Device Package：10-SIP
- Grade：-
- Qualification：-
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Overview
The STA481A is an NPN Darlington transistor manufactured by Sanken Electric USA Inc. It features a built-in avalanche diode and is housed in a 10-pin STA package. The device supports a collector-emitter voltage (VCEO) of 60 V and a continuous collector current (IC) of 1 A. Key electrical characteristics include a DC current gain (hFE) ranging from 2000 to 10000 at IC=0.5A, and a saturation voltage (VCE(sat)) of 1.5 V maximum. Thermal performance includes a junction temperature range of -40°C to +150°C and a power dissipation of 2.5 W at Ta=25°C.
Feature Summary
- NPN Darlington configuration with integrated avalanche protection
- High current gain suitable for low drive current applications
- Robust thermal stability across wide operating temperature ranges
Applications
- General purpose switching circuits
- Driver stages for relays or motors
- Power regulation interfaces
Procurement Notes
Verify the component datasheet directly from Sanken Electric's official documentation to confirm current specifications. Check for any updates regarding lead times or availability through authorized distributors. Ensure that the procurement channel provides traceability for the specific manufacturing batch to maintain quality standards.
Selection Notes
Select this component for applications requiring high gain and moderate current handling within a compact 10-pin package. Consider the thermal derating curves when designing for ambient temperatures above 25°C. Verify that the input drive current meets the minimum requirements for the specified hFE range to ensure reliable saturation.
Part Context
This part belongs to Sanken's STA series of surface-mount transistors. The STA481A is specifically designed as an NPN Darlington pair. It is not recommended for new designs according to the provided documentation; engineers should evaluate alternative components for future projects while considering existing inventory constraints.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided source material.
