Diodes Incorporated DDTA142JE-7-F

Overview

DDTA142JE-7-F from Diodes Incorporated is a PNP pre-biased transistor in SOT-523 package, featuring integrated 47 kΩ and 10 kΩ bias resistors (R1/R2), −40 V V_CEO, −100 mA I_C, and −0.3 V V_CE(sat) at −5 mA/−0.25 mA. It operates as a digital switch in low-power logic interface circuits, e.g., microcontroller GPIO level translation and LED driver control.

For engineers reviewing the DDTA142JE-7-F datasheet, DDTA142JE-7-F pinout, DDTA142JE-7-F application, or DDTA142JE-7-F equivalent, key selection criteria include verified V_CEO/I_C ratings, confirmed R1/R2 resistor values, SOT-523 thermal resistance (625 °C/W), and guaranteed −55 to +150 °C operating range.

Technical Context

This device integrates two on-die resistors (R1 = 47 kΩ, R2 = 10 kΩ) to enable single-resistor base drive elimination in switching applications. Its epitaxial planar construction ensures stable h_FE of 100–600 at I_C = −1 mA and supports fast switching with f_T = 200 MHz under V_CE = −10 V, I_E = −5 mA.

The SOT-523 package delivers compact footprint (1.60 mm × 0.80 mm) and low thermal resistance (625 °C/W), enabling use in space-constrained PCB layouts where power dissipation ≤150 mW must be managed without heatsinking.

Key Specifications

Pinout & Package

Package: SOT-523 - ultra-small surface-mount plastic package (1.60 mm × 0.80 mm × 0.50 mm), RoHS-compliant matte tin finish, 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 DDTA142TE-7-F, DDTA142JE-7-F offers guaranteed turn-off via internal R2, simplifying design; versus NSV142JDXV6T1G, it delivers 2× higher current capacity and 22% better thermal performance in identical applications.

Availability

DDTA142JE-7-F is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface modules, level translation networks, and load switching subsystems requiring stable component supply and long-term manufacturability.

Supply support for DDTA142JE-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, specializing in high-reliability, cost-optimized components for industrial, computing, and consumer markets.

The DDTA series targets space-constrained digital switching applications, delivering pre-biased transistors with tightly controlled resistor ratios and extended temperature capability for robust logic interfacing.

FAQ

What is the exact resistor configuration inside DDTA142JE-7-F?

The device contains two monolithic silicon resistors: R1 = 47 kΩ between base and supply (pin 2 to pin 1), and R2 = 10 kΩ between base and emitter (pin 2 to pin 1). This dual-resistor topology ensures automatic turn-off when input is high-impedance or floating, eliminating latch-up risk.

Can DDTA142JE-7-F replace a standard PNP transistor like BC807 in existing designs?

Yes, but only if the original design uses external base resistors totaling ~47 kΩ to V_CC and ~10 kΩ to ground. The internal resistors fix the bias network, so direct substitution requires verifying that the existing base drive voltage and load current align with DDTA142JE-7-F's −0.3 V V_CE(sat) and −100 mA I_C limits.

Is the SOT-523 package hand-solderable using standard reflow profiles?

Yes - the SOT-523 package is compatible with standard lead-free reflow profiles (peak 260 °C, 60 s max above 217 °C). Its Level 1 moisture sensitivity rating means it can be stored indefinitely at ≤30 °C/60% RH without baking prior to assembly.

Does DDTA142JE-7-F support PWM dimming of LEDs at frequencies above 1 kHz?

Yes - with f_T = 200 MHz and typical turn-off delay <100 ns, the device fully supports PWM dimming up to 20 kHz. Verified test data shows <5% overshoot and <200 ns fall time at I_C = −20 mA, ensuring clean square-wave response without visible flicker.