Diodes Incorporated DDTB114GC-7-F

Overview

DDTB114GC-7-F from Diodes Incorporated is a PNP pre-biased transistor in SOT23 package, featuring R1 = 0 Ω (shorted) and R2 = 10 kΩ bias network. It delivers V_CEO = −40 V, I_C = −500 mA max, V_CE(sat) = −0.3 V at I_C = −50 mA / I_B = −2.5 mA, and h_FE = 56–600. It serves as an integrated switch in low-voltage logic-level interface circuits for automotive body control modules.

For engineers reviewing the DDTB114GC-7-F datasheet, DDTB114GC-7-F pinout, DDTB114GC-7-F application, or DDTB114GC-7-F equivalent, key selection criteria include emitter-base breakdown voltage (V_EBO = −5 V), input current tolerance (I_L = −0.88 mA at V_I = −5 V), saturation performance under load, and AEC-Q101 readiness for automotive use cases.

Technical Context

This device integrates a PNP bipolar junction transistor with a single external base bias resistor (R2 = 10 kΩ) and shorted R1 (0 Ω), enabling direct logic-level drive without discrete base resistors. Its V_EBO rating of −5 V and I_EBO ≤ −0.5 μA support robust turn-off in noisy automotive environments.

The transistor operates with guaranteed h_FE ≥ 56 at I_C = −5 mA / V_CE = −5 V and f_T = 200 MHz, confirming suitability for medium-speed switching (≤1 MHz) in power management and signal routing applications where gain stability and thermal resistance (R_θJA = 625 °C/W) are critical.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic package (2.9 mm × 1.3 mm × 0.9 mm), lead-free, halogen-free, RoHS 3 compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDTB114GC-7-F, DDTB114EC-7-F shifts activation polarity and increases input threshold, while NSV114GUT1G trades V_EBO margin and gain for lower unit cost - making DDTB114GC-7-F optimal for noise-prone, logic-low-driven automotive switches requiring guaranteed saturation.

Availability

DDTB114GC-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, and USB-C power management requiring stable component supply and long-term lifecycle continuity.

Supply support for DDTB114GC-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, manufacturing, and sales operations across Asia, Europe, and North America.

This part belongs to Diodes' DDTB series of pre-biased transistors, engineered specifically for space-constrained, high-reliability switching in automotive and industrial control systems where simplified BOM and AEC-Q101 readiness are essential.

FAQ

Is DDTB114GC-7-F qualified to AEC-Q101?

No, DDTB114GC-7-F is marked "Obsolete" in Diodes' ordering table and is not AEC-Q101 qualified. However, it is manufactured in IATF 16949 certified facilities, and Diodes offers AEC-Q101 variants (e.g., DDTB114GC-7-F with AEC suffix) upon special request with PPAP documentation support.

What is the function of the shorted R1 (0 Ω) in this device?

The shorted R1 connects the emitter directly to the base internally, forming a diode-connected configuration that enhances turn-off speed and reduces storage time. This structure improves switching consistency in logic-driven applications where fast release from saturation is required.

Can DDTB114GC-7-F replace a standard PNP BJT like MMBT3906?

Yes, but only when the circuit uses logic-low activation and can accommodate the fixed 10 kΩ base pull-up. Unlike MMBT3906, DDTB114GC-7-F eliminates external biasing components and provides guaranteed h_FE and V_CE(sat) - however, its V_EBO = −5 V is lower than MMBT3906's −6 V, requiring verification in high-noise environments.

What is the maximum operating frequency for switching applications?

While f_T = 200 MHz indicates high-frequency capability, the device is optimized for DC–1 MHz switching due to thermal limits (P_D = 200 mW) and SOT23 package constraints. For >500 kHz operation, derate I_C to ≤ −100 mA and ensure PCB copper area meets Diodes' recommended pad layout for thermal relief.