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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 200MW SOT23-3
- Series：*
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：-
- Transistor Type：-
- Current - Collector (Ic) (Max)：-
- Voltage - Collector Emitter Breakdown (Max)：-
- Resistor - Base (R1)：-
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- Frequency - Transition：-
- Power - Max：-
- Grade：-
- Qualification：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
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Overview
The DDTC124GCA-7 is an NPN pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features epitaxial planar die construction and integrates a single built-in biasing resistor (R2) with a nominal value of 22 kOhms. The device operates within a collector-emitter voltage range of 50 V and supports a continuous collector current of 100 mA, dissipating up to 200 mW of power. Packaged in a compact SOT-23 case, it provides a minimum DC current gain (hFE) of 56 at 5 mA and 5 V. The component is RoHS compliant, lead-free, and halogen-free, suitable for automated assembly processes.
Feature Summary
- Integrates a single internal emitter-to-base bleeder resistor (R2) to simplify circuit design
- Utilizes epitaxial planar die construction for reliable performance
- Manufactured using lead-free plating with matte tin finish over alloy 42 leadframe
- Compliant with RoHS standards and free from intentionally added antimony
Applications
- General-purpose switching applications requiring simplified base drive circuits
- Driver circuits for low-power loads where a single pull-down resistor is sufficient
- Logic interface circuits utilizing standard TTL or CMOS logic levels
Procurement Notes
Verify the specific ordering suffix against official documentation, as variations exist between tape-and-reel formats. Confirm that the required marking code matches the intended production date code requirements. Ensure compliance with environmental directives such as RoHS and REACH if applicable to the target market. Check for any specific manufacturing date code constraints related to molding compound composition.
Selection Notes
Select this component when only a single biasing resistor is required for the application. Compare the 22 kOhm R2 value against other series members like DDTC114GCA (10 kOhm) or DDTC144GCA (47 kOhm) to match specific input impedance needs. Consider the complementary PNP type (DDTA124GCA) if a push-pull configuration is necessary. Verify that the SOT-23 package dimensions fit the available PCB space.
Part Context
This part belongs to the DDTC(R2-only) CA series, which distinguishes itself by including only one internal resistor connected between the emitter and base. Unlike dual-resistor configurations, this design simplifies the external component count while providing basic bias stability. The 'CA' designation indicates the specific pinout and electrical characteristics defined in datasheet DS30332.
Replacement Considerations
Direct substitutes include other Diodes Incorporated parts from the same series, such as DDTC114GCA-7-F or DDTC144GCA-7-F, provided the different nominal resistor values are acceptable. Cross-manufacturer equivalents should be verified for identical pinouts, voltage ratings, and thermal resistance.
