Equivalent & Substitute Parts for DTA125TKAT146

Part Overview

The DTA125TKAT146 from Rohm Semiconductor is a surface-mount Pre-Biased Bipolar Transistor (BJT), PNP type, with a maximum collector-emitter voltage of 50 V, collector current up to 100 mA, and SMT3 package. It is classified as "Not For New Designs," indicating that engineers must identify equivalent or substitute transistors to ensure long-term availability and support in new projects. Selecting alternative models is necessary when original parts are no longer recommended for new designs or have limited lifecycle support.

Substiute Parts

DTA125TKAT146

Rohm SemiconductorIn Stock: 3915DTA125TKAT146 Datasheet

Current PartRFQ

DDTA125TCA-7

Diodes IncorporatedIn Stock: 6857DDTA125TCA-7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is determined by alignment with these strictly defined parameters: PNP pre-biased transistor type, maximum collector-emitter voltage (50 V), maximum collector current (100 mA), base resistor value (200 kΩ), minimum DC current gain (100 @ 1mA, 5V), Vce saturation (300mV @ 50µA, 500µA), collector cutoff current (500nA), transition frequency (250 MHz), maximum power dissipation (200 mW), identical or compatible surface mount package type, and conformity with RoHS and REACH status. Only parts matching these essential electrical and mechanical criteria are included below.

Parameter Comparison

Engineering Selection Recommendations

The main part, DTA125TKAT146, is classified as "Not For New Designs." The listed substitute, DDTA125TCA-7, is active and holds RoHS3 and REACH compliance. Both parts share MSL 1 (Unlimited) and the same ECCN code. Selection is supported strictly on lifecycle status and compliance criteria that match engineering requirements for environmental and export regulations.

Frequently Asked Questions (FAQ)

Q1: What are the most critical parameters for selecting an equivalent PNP pre-biased BJT?
A1: The most critical parameters are transistor type, breakdown voltage, collector current, base resistor value, power dissipation, package compatibility, and compliance status.

Q2: How do I confirm package compatibility between DTA125TKAT146 and DDTA125TCA-7?
A2: DTA125TKAT146 is available in TO-236-3, SC-59, SOT-23-3 packages, and DDTA125TCA-7 is specified in SOT23-3, which aligns with the mechanical requirements.

Q3: Are there any compliance differences relevant to these parts?
A3: Both parts are ROHS3 Compliant, have MSL 1 (Unlimited), and are REACH Unaffected, ensuring equivalent compliance with regulatory standards.

Q4: Can the DDTA125TCA-7 be used as a drop-in replacement for DTA125TKAT146 in existing PCB layouts?
A4: Both share the SOT-23-3 package designation, which supports straightforward substitution from a mechanical footprint perspective.

Q5: Is there any lifecycle status concern when choosing between DTA125TKAT146 and DDTA125TCA-7?
A5: DTA125TKAT146 is Not For New Designs; DDTA125TCA-7 is Active, making the latter suitable for current and future design requirements based on the provided information.