Diodes Incorporated DDTC114TKA-7-F

Overview

DDTC114TKA-7-F from Diodes Incorporated is an NPN pre-biased small-signal transistor with a single built-in 10 kΩ bias resistor (R1), housed in SC-59 surface-mount package, rated for 50 V V_CEO, 100 mA I_C, and 200 mW P_D; used for digital switching and level translation in portable power management circuits.

For engineers reviewing the DDTC114TKA-7-F datasheet, DDTC114TKA-7-F pinout, DDTC114TKA-7-F application, or DDTC114TKA-7-F equivalent, key selection criteria include verified R1 = 10 kΩ tolerance (±30%), h_FE = 100–600 at I_C = 1 mA, V_CE(sat) ≤ 0.3 V at I_C/I_B = 5 mA/0.5 mA, SC-59 mechanical dimensions, and RoHS-compliant matte tin plating.

Technical Context

This device integrates a monolithic NPN transistor with a precision laser-trimmed 10 kΩ base-emitter pull-up resistor (R1 only), eliminating external bias components in saturated-switch configurations. It operates as a digital switch with guaranteed turn-on at V_IN ≥ 0.7 V and full saturation below 0.3 V V_CE.

The SC-59 package supports high-density PCB layouts with JEDEC-standard thermal performance (R_θJA = 625 °C/W on FR4), and its "Green" molding compound meets UL 94V-0 flammability rating and J-STD-020C Level 1 moisture sensitivity.

Key Specifications

Pinout & Package

Package: SC-59 - 3-pin surface-mount plastic package (JEDEC TO-236AB), 2.7–3.0 mm length, 1.5–1.7 mm width, 0.35–0.50 mm thickness, UL 94V-0 rated, moisture sensitivity Level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN pre-biased transistor applications.

Compared with NSV114T1T5G and EMH11T2R, DDTC114TKA-7-F offers the highest guaranteed h_FE floor (100) and lowest thermal resistance (625 °C/W), making it optimal for thermally dense, low-noise digital switching where gain consistency and self-heating control are critical.

Availability

DDTC114TKA-7-F is available at Aetrix Electronics and suitable for smartphone power sequencing, USB-C port detection, and IoT sensor node wake-up requiring stable component supply and consistent parametric performance across production lots.

Supply support for DDTC114TKA-7-F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The DDTC R1-only series targets cost-sensitive, high-volume digital switching applications where integration of a single bias resistor reduces PCB area and assembly steps without compromising reliability or thermal performance.

FAQ

What is the exact value and tolerance of the internal bias resistor R1?

The internal R1 resistor is precisely trimmed to 10 kΩ with a tolerance of ±30%, as confirmed in the Electrical Characteristics table (DS30339 Rev. 6, Page 2). This value is fixed and not adjustable; no external resistor is required for standard digital switching use cases.

Can DDTC114TKA-7-F be used in linear amplifier configurations?

No - this device is optimized for saturated switching, not linear amplification. Its h_FE variation across I_C (Fig. 3) and lack of specified linearity parameters (e.g., distortion, output impedance) make it unsuitable for analog gain stages; use dedicated small-signal transistors like BC847 instead.

Is the SC-59 package compatible with standard SMT reflow profiles?

Yes - the SC-59 package is qualified for lead-free reflow per J-STD-020C Level 1, supporting peak temperatures up to 260°C. Its matte tin finish ensures reliable wetting, and the "Green" molding compound remains dimensionally stable through multiple thermal cycles.

Does DDTC114TKA-7-F support bidirectional signal routing?

No - it is a unidirectional NPN transistor with fixed emitter-base-collector polarity. The internal R1 connects only between base and emitter; reverse biasing (e.g., applying voltage to emitter while grounding collector) violates maximum ratings and risks permanent damage.