PDTA124EQBZ Pre-Biased PNP Transistor Equivalent & Substitute Parts

Part Overview

The PDTA124EQBZ is a pre-biased PNP bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the 3-XDFN package with exposed pad. This component integrates internal base and emitter-base resistors (22 kOhms each) to simplify circuit design and reduce component count in switching and amplification applications.

The PDTA124EQBZ carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

PDTA124EQBZ

Nexperia USA Inc.In Stock: 5915PDTA124EQBZ Datasheet

Current PartRFQ

PDTA124EQB-QZ

Nexperia USA Inc.In Stock: 5780PDTA124EQB-QZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PDTA124EQBZ is determined by strict equivalence across the following critical parameters:

Electrical Characteristics:

• Transistor type classification (PNP - Pre-Biased)
• Maximum collector current (100 mA)
• Maximum collector-emitter breakdown voltage (50 V)
• Internal base resistor value (22 kOhms)
• Internal emitter-base resistor value (22 kOhms)
• DC current gain minimum specification (60 @ 5mA, 5V)
• Saturation voltage specification (100 mV @ 500µA, 10mA)
• Collector cutoff current (100 nA)
• Transition frequency (180 MHz)
• Maximum power dissipation (340 mW)

Mechanical & Environmental Characteristics:

• Package type (3-XDFN Exposed Pad)
• Mounting technology (Surface Mount, Wettable Flank)
• RoHS compliance status (ROHS3 Compliant)

Substitute parts must match all electrical parameters and package specifications to ensure functional and mechanical compatibility without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

The PDTA124EQB-QZ is the direct substitute for the obsolete PDTA124EQBZ. Both components share identical electrical specifications and package configurations, ensuring drop-in compatibility without circuit modification.

Key Selection Factors:

The PDTA124EQB-QZ offers additional advantages over the main part:

• Product Status: Active production status ensures long-term availability and supply chain continuity, eliminating obsolescence risk associated with the PDTA124EQBZ.

• Moisture Sensitivity: The substitute features MSL 1 (Unlimited) compared to MSL 3 (168 Hours) on the original part, providing improved handling flexibility and reduced risk of moisture-induced failures during storage and assembly.

• Automotive Qualification: The PDTA124EQB-QZ carries AEC-Q101 qualification and Automotive grade designation, enabling use in automotive applications where such certification is required. This qualification does not restrict use in non-automotive applications.

• Compliance: Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment.

For applications currently using PDTA124EQBZ, transition to PDTA124EQB-QZ requires no design changes, PCB layout modifications, or firmware updates. The substitute is electrically and mechanically equivalent.

Frequently Asked Questions (FAQ)

Q: Can PDTA124EQB-QZ be used as a direct replacement for PDTA124EQBZ without circuit redesign?

A: Yes. The PDTA124EQB-QZ is electrically and mechanically identical to the PDTA124EQBZ across all specified parameters. No circuit redesign, PCB layout changes, or component value adjustments are required. The substitute is a direct drop-in replacement.

Q: What is the significance of the different product status (Obsolete vs. Active)?

A: The PDTA124EQBZ is classified as Obsolete, indicating that Nexperia has discontinued production and will not guarantee future availability. The PDTA124EQB-QZ maintains Active status, confirming ongoing production and long-term supply availability. Transitioning to the active part eliminates supply chain risk.

Q: How do the moisture sensitivity levels differ, and does this affect circuit performance?

A: The PDTA124EQBZ carries MSL 3 (168 Hours), requiring storage in controlled humidity conditions and limiting shelf life after moisture exposure. The PDTA124EQB-QZ carries MSL 1 (Unlimited), eliminating moisture sensitivity constraints. This improves handling flexibility and reduces risk of moisture-induced failures. Both parts perform identically in circuit operation.

Q: What does AEC-Q101 qualification mean, and is it required for non-automotive applications?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. The PDTA124EQB-QZ carries this certification, enabling use in automotive applications where such qualification is mandated. For non-automotive applications, AEC-Q101 qualification is not required but does not restrict component use. The electrical and mechanical performance remains identical regardless of application type.

Q: Are there any differences in the 3-XDFN package between the two parts?

A: No. Both the PDTA124EQBZ and PDTA124EQB-QZ use the identical 3-XDFN Exposed Pad package with Wettable Flank surface mount technology. PCB footprints, solder pad dimensions, and assembly processes are identical. No PCB redesign is necessary.

Q: Can the PDTA124EQB-QZ be used in existing inventory systems that reference PDTA124EQBZ?

A: Yes. The PDTA124EQB-QZ is the manufacturer-recommended substitute for PDTA124EQBZ. Inventory management systems can be updated to recognize the substitute as a valid equivalent. Both parts share the same base product number (PDTA124) and are cross-referenced in Nexperia documentation.

Q: What is the difference between the part number suffixes "-QZ" and "EQB-QZ"?

A: The PDTA124EQBZ uses the suffix "EQB-Z" while the substitute uses "EQB-QZ". These suffixes denote packaging and qualification variations within the same base product family. The "-QZ" designation on the substitute indicates the automotive-qualified variant with improved MSL rating. Both are manufactured by Nexperia and share identical electrical specifications.