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Product Detailed Parameters
- Description：TRANS NPN/PNP 25V 1A SOT-563
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Transistor Type：1 NPN, 1 PNP
- Current - Collector (Ic) (Max)：1A
- Voltage - Collector Emitter Breakdown (Max)：25V
- Vce Saturation (Max) @ Ib, Ic：450mV @ 100mA, 1A
- Current - Collector Cutoff (Max)：100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 500mA, 1V
- Power - Max：350mW
- Frequency - Transition：100MHz
- Operating Temperature：-65°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SOT-563, SOT-666
- Supplier Device Package：SOT-563
- Grade：-
- Qualification：-
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Overview
The CMLT3474 TR is a surface-mount silicon dual transistor from Central Semiconductor Corp, housed in an SOT-563 package. It integrates one NPN and one PNP low VCE(SAT) transistor within a single compact footprint. The device supports a continuous collector current of 1.0 A and a peak collector current of 1.5 A. Maximum ratings include a collector-base voltage of 40 V, a collector-emitter voltage of 25 V, and an emitter-base voltage of 6.0 V. Power dissipation is rated at 350 mW with a thermal resistance of 357 °C/W. The operating junction temperature range spans from -65 °C to +150 °C.
Feature Summary
- Dual configuration combining complementary NPN and PNP transistors for space-constrained designs
- Low collector-emitter saturation voltage optimized for efficient switching applications
- High current handling capability suitable for general-purpose amplifier and switching tasks
Applications
- Small signal general purpose amplifiers
- General purpose switching circuits
- Battery-powered devices requiring low saturation voltage
Procurement Notes
This component has been officially transitioned to End of Life status by the manufacturer. No direct replacement part numbers are currently listed in official documentation. Customers should submit technical inquiries through the manufacturer's support portal to identify potential alternate sources or verify availability of remaining stock before finalizing procurement plans.
Selection Notes
Select this component when a compact dual-transistor solution is required for low-voltage switching or amplification. Verify that the 25 V collector-emitter voltage rating meets circuit requirements. Ensure thermal management accommodates the 357 °C/W junction-to-ambient resistance. Confirm compatibility with the SOT-563 package outline during PCB layout.
Part Context
The CMLT3474 belongs to Central Semiconductor’s series of surface-mount dual transistors, which also includes the CMLT3410 (dual NPN) and CMLT7410 (dual PNP). These devices share the same SOT-563 mechanical outline and are designed for applications demanding low saturation voltages. The marking code for the CMLT3474 is designated as C37 on the package surface.
Replacement Considerations
No specific replacement part numbers are documented in the provided datasheet or End of Life notice. Users must consult the manufacturer directly via their online inquiry system to locate suitable alternatives.
