PDTA123JQBZ Equivalent & Substitute Parts

Part Overview

The PDTA123JQBZ is a pre-biased PNP bipolar junction transistor (BJT) manufactured by Nexperia USA Inc. in a 3-XDFN surface mount package with wettable flank. This component is designed for applications requiring integrated base bias resistors, eliminating the need for external biasing networks. The device operates at 50 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and transition frequency of 180 MHz.

The PDTA123JQBZ carries an obsolete product status. Locating equivalent or substitute components is necessary to support ongoing production requirements, field repairs, and design continuity. The substitute part PDTA123JQB-QZ provides functional equivalence while maintaining active product status and enhanced reliability qualifications.

Substiute Parts

PDTA123JQBZ

Nexperia USA Inc.In Stock: 5819PDTA123JQBZ Datasheet

Current PartRFQ

PDTA123JQB-QZ

Nexperia USA Inc.In Stock: 26112PDTA123JQB-QZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PDTA123JQBZ with the PDTA123JQB-QZ is based on electrical and mechanical parameter equivalence. Both components share identical specifications across all critical performance parameters:

Electrical Equivalence Parameters:

• Transistor type: PNP - Pre-Biased
• Maximum collector current: 100 mA
• Collector-emitter breakdown voltage: 50 V
• Base resistor (R1): 2.2 kOhms
• Emitter-base resistor (R2): 47 kOhms
• DC current gain (hFE): 100 @ 10mA, 5V
• Saturation voltage: 100 mV @ 250µA, 5mA
• Collector cutoff current: 100 nA
• Transition frequency: 180 MHz
• Maximum power dissipation: 340 mW

Mechanical Equivalence Parameters:

• Package type: 3-XDFN Exposed Pad
• Mounting technology: Surface Mount, Wettable Flank
• Supplier device package: DFN1110D-3

Both parts are RoHS3 compliant and REACH unaffected. The substitute part maintains full functional and physical compatibility with the original component.

Parameter Comparison

Engineering Selection Recommendations

The PDTA123JQB-QZ is the direct substitute for the obsolete PDTA123JQBZ. Selection of the substitute part is based on the following engineering criteria:

Product Status: The PDTA123JQBZ is classified as obsolete, making continued sourcing from original inventory unsustainable. The PDTA123JQB-QZ maintains active product status with Nexperia USA Inc., ensuring long-term availability and supply chain continuity.

Electrical Compatibility: All electrical parameters are identical between the original and substitute parts. The components are pin-for-pin compatible with no circuit modifications required.

Mechanical Compatibility: Both parts utilize the identical 3-XDFN Exposed Pad package with wettable flank surface mount technology. PCB layouts and assembly processes require no changes.

Compliance and Certifications: Both parts meet RoHS3 compliance requirements. The substitute part carries AEC-Q101 automotive qualification and improved moisture sensitivity level (MSL 1 versus MSL 3), providing enhanced reliability characteristics suitable for demanding applications.

Regulatory Alignment: Both components are REACH unaffected and carry identical ECCN (EAR99) and HTSUS (8541.21.0075) classifications.

Frequently Asked Questions (FAQ)

Q: Can PDTA123JQB-QZ be used as a direct replacement for PDTA123JQBZ in existing designs?

A: Yes. The PDTA123JQB-QZ is electrically and mechanically identical to the PDTA123JQBZ. All electrical parameters, including collector current, breakdown voltage, gain, saturation characteristics, and frequency response, are equivalent. The package type and mounting technology are identical. No circuit modifications or PCB layout changes are required.

Q: What is the difference between the two part numbers?

A: The primary differences are product status and qualification level. The PDTA123JQBZ is obsolete, while PDTA123JQB-QZ is active. The substitute part carries AEC-Q101 automotive qualification and improved moisture sensitivity level (MSL 1 versus MSL 3), indicating enhanced reliability and storage stability.

Q: Are there any package or pinout differences?

A: No. Both components use the 3-XDFN Exposed Pad package (DFN1110D-3) with wettable flank surface mount technology. Pinout, pad layout, and mechanical dimensions are identical.

Q: What does the pre-biased designation mean?

A: Pre-biased indicates that the transistor includes integrated base bias resistors (R1 = 2.2 kOhms, R2 = 47 kOhms) within the package. This eliminates the need for external biasing resistors in the circuit, simplifying design and reducing component count.

Q: Is the substitute part suitable for automotive applications?

A: Yes. The PDTA123JQB-QZ carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. The original PDTA123JQBZ does not carry this qualification.

Q: What is the significance of the moisture sensitivity level (MSL) difference?

A: The PDTA123JQBZ has MSL 3 (168 hours), requiring controlled storage and handling conditions. The PDTA123JQB-QZ has MSL 1 (unlimited), indicating superior moisture resistance and more flexible storage requirements. This provides operational advantages in manufacturing and field deployment scenarios.

Q: Are both parts RoHS compliant?

A: Yes. Both the PDTA123JQBZ and PDTA123JQB-QZ are RoHS3 compliant and REACH unaffected.

Q: What is the maximum collector current rating?

A: Both parts have a maximum collector current (Ic) of 100 mA at the specified operating conditions.

Q: What is the transition frequency specification?

A: Both parts have a transition frequency (fT) of 180 MHz, indicating the frequency at which current gain drops to unity.