ZXTD4591E6TC Equivalent & Substitute Parts

Part Overview

The ZXTD4591E6TC is a Bipolar (BJT) Transistor Array manufactured by Diodes Incorporated, featuring one NPN and one PNP transistor in a Surface Mount SOT-23-6 package. This device is rated for 60V collector-emitter breakdown voltage with 1A maximum collector current and 1.1W power dissipation. The part is currently classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity.

Substiute Parts

ZXTD4591E6TC

Diodes IncorporatedIn Stock: 908ZXTD4591E6TC Datasheet

Current PartRFQ

ZXTD4591E6TA

Diodes IncorporatedIn Stock: 23177ZXTD4591E6TA Datasheet

MFR RecommendedRFQ

PBSS4160DPN,115

Nexperia USA Inc.In Stock: 13275PBSS4160DPN,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZXTD4591E6TC is determined by the following critical parameters:

Primary Substitution Criteria:

• Transistor configuration: 1 NPN and 1 PNP array
• Voltage rating: 60V collector-emitter breakdown minimum
• Current capability: 1A or greater per transistor
• Power dissipation: 1.1W or greater
• Surface mount package compatibility
• Operating temperature range: -55°C to 150°C minimum

Substitute Classification:

Direct Equivalent (Packaging Variant): ZXTD4591E6TA maintains identical electrical specifications and base product number (ZXTD4591) with only packaging format differentiation (Tape & Reel versus cut tape). This part is Active status and provides direct functional replacement.

Functional Substitute (Performance Trade-offs): PBSS4160DPN,115 provides equivalent voltage rating (60V) and similar transistor array configuration (NPN/PNP). However, this part exhibits reduced maximum collector current (870mA NPN, 770mA PNP versus 1A), lower power dissipation (420mW versus 1.1W), and different package format (6-TSOP versus SOT-23-6). This substitute is suitable only for applications where the reduced current and power ratings are acceptable.

Parameter Comparison

Engineering Selection Recommendations

ZXTD4591E6TA Selection Criteria:

The ZXTD4591E6TA is the primary recommended substitute for the obsolete ZXTD4591E6TC. Both parts share identical electrical specifications, base product number, and operating parameters. The ZXTD4591E6TA is currently in Active product status with 23,100 units in stock, ensuring long-term availability. The only differentiation is packaging format (Tape & Reel versus cut tape), which does not affect electrical performance or PCB-level compatibility. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings. This substitute provides direct functional replacement without design modification.

PBSS4160DPN,115 Selection Criteria:

The PBSS4160DPN,115 serves as a functional substitute only for applications where reduced current and power ratings are acceptable. This part is manufactured by Nexperia USA Inc. and maintains Active product status with 13,191 units in stock. The 60V voltage rating matches the original specification. However, the maximum collector current is reduced to 870mA (NPN) and 770mA (PNP), and power dissipation is limited to 420mW compared to 1.1W. The package format differs (6-TSOP versus SOT-23-6), requiring PCB layout modification. The PBSS4160DPN,115 includes AEC-Q100 automotive qualification, which may be beneficial for automotive applications. This substitute is suitable only when circuit design accommodates the reduced electrical ratings and package footprint change.

Frequently Asked Questions (FAQ)

Q: Can ZXTD4591E6TA be used as a direct replacement for ZXTD4591E6TC?

A: Yes. The ZXTD4591E6TA provides direct functional replacement with identical electrical specifications, voltage rating, current capability, power dissipation, and operating temperature range. The parts differ only in packaging format (Tape & Reel versus cut tape), which does not affect circuit performance or PCB compatibility. No design modification is required.

Q: What are the limitations of using PBSS4160DPN,115 as a substitute?

A: The PBSS4160DPN,115 has reduced maximum collector current (870mA NPN, 770mA PNP versus 1A) and lower power dissipation (420mW versus 1.1W). Applications requiring the full 1A current or 1.1W power handling cannot use this substitute without circuit redesign. Additionally, the package format differs (6-TSOP versus SOT-23-6), requiring PCB layout modification and potential footprint changes.

Q: Are all substitute parts RoHS compliant?

A: Yes. Both ZXTD4591E6TA and PBSS4160DPN,115 are ROHS3 compliant, matching the compliance status of the original ZXTD4591E6TC.

Q: What is the operating temperature range difference between substitutes?

A: The ZXTD4591E6TA maintains the identical operating temperature range of -55°C to 150°C (TJ). The PBSS4160DPN,115 specifies only a maximum junction temperature of 150°C without a minimum temperature specification in the provided data, indicating potential limitation for low-temperature applications below -55°C.

Q: Does package format affect electrical performance?

A: No. Package format (SOT-23-6 versus 6-TSOP) does not affect electrical performance. However, package differences require PCB layout modification, including footprint changes, trace routing adjustments, and potential board space implications. The ZXTD4591E6TA maintains the original SOT-23-6 package, eliminating layout redesign requirements.

Q: Is the PBSS4160DPN,115 suitable for automotive applications?

A: The PBSS4160DPN,115 includes AEC-Q100 automotive qualification and automotive grade designation, making it suitable for automotive applications. However, the reduced current and power ratings must still be verified against specific circuit requirements.

Q: What inventory availability exists for substitute parts?

A: ZXTD4591E6TA has 23,100 units in stock. PBSS4160DPN,115 has 13,191 units in stock. Both parts maintain Active product status, ensuring continued availability and supply chain stability.