DDZ23-7 Equivalent & Substitute Parts

Part Overview

The DDZ23-7 is an active Zener diode manufactured by Diodes Incorporated, rated at 23 V nominal with 500 mW power dissipation capability in a surface mount SOD-123 package. This component is designed for voltage regulation and protection applications requiring precise Zener voltage characteristics at ±3% tolerance. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1), making it suitable for standard industrial and commercial applications. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design optimization, or supply chain considerations.

Substiute Parts

DDZ23-7

Diodes IncorporatedIn Stock: 1819DDZ23-7 Datasheet

Current PartRFQ

NZH24C,115

Nexperia USA Inc.In Stock: 4044NZH24C,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DDZ23-7 are identified based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Zener voltage rating within the tolerance band of the original specification
• Power dissipation capacity equal to or greater than the original part
• Impedance characteristics compatible with circuit requirements
• Forward voltage characteristics matching the original specification
• Reverse leakage current performance acceptable for the application

Mechanical Compatibility Criteria:

• Surface mount package type (SOD-123 or compatible variant)
• Identical or functionally equivalent lead configuration
• Compliance with RoHS and environmental standards

Regulatory and Quality Criteria:

• Active product status
• ROHS3 compliance
• MSL rating of 1 or better

The substitute part NZH24C,115 operates at 24 V nominal Zener voltage, which represents a 1 V deviation from the DDZ23-7 specification. This substitution is valid only in applications where the circuit design permits operation at the higher voltage rating within the tolerance band of the substitute part.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (DDZ23-7): The DDZ23-7 is the specified component for applications requiring a 23 V Zener diode with the stated electrical characteristics. This part maintains active product status and full ROHS3 compliance. Selection of the primary part is appropriate when the 23 V nominal voltage is a critical design parameter and inventory availability permits.

Substitute Part (NZH24C,115): The NZH24C,115 from Nexperia USA Inc. is a functionally equivalent substitute where circuit design permits operation at 24 V nominal Zener voltage. This substitute carries AEC-Q100 automotive qualification, indicating enhanced reliability screening. The substitute exhibits superior reverse leakage current performance (40 nA versus 50 nA) and maintains identical power dissipation, impedance, and forward voltage characteristics. The substitute package variant (SOD-123F) is mechanically compatible with SOD-123 footprints. The operating temperature range of the substitute is limited to -55°C minimum, which excludes applications requiring operation below -55°C.

Selection of the substitute part is appropriate when the 1 V voltage difference is acceptable within circuit tolerance margins and when the narrower operating temperature range does not conflict with application requirements.

Frequently Asked Questions (FAQ)

Q: Can the NZH24C,115 be used as a direct replacement for the DDZ23-7?

A: The NZH24C,115 is mechanically compatible and electrically similar, but operates at 24 V nominal Zener voltage compared to 23 V for the DDZ23-7. Direct substitution is valid only in applications where the circuit design accommodates the 1 V voltage difference within the tolerance band of the substitute part. Circuit analysis is required to confirm compatibility.

Q: What is the difference between SOD-123 and SOD-123F packages?

A: Both packages are surface mount variants with compatible footprints. SOD-123F is a variant designation used by Nexperia. The mechanical and electrical interfaces are compatible for PCB assembly purposes.

Q: Does the NZH24C,115 have better performance than the DDZ23-7?

A: The NZH24C,115 exhibits lower reverse leakage current (40 nA versus 50 nA) and carries AEC-Q100 automotive qualification. Both parts share identical power dissipation, impedance, and forward voltage specifications. The substitute does not represent a performance upgrade but rather an alternative with different voltage rating and enhanced automotive qualification.

Q: What is the impact of the operating temperature range difference?

A: The DDZ23-7 operates from -65°C to 150°C, while the NZH24C,115 operates from -55°C to 150°C. Applications requiring operation below -55°C must use the DDZ23-7. Applications within the -55°C to 150°C range can use either part.

Q: Are both parts RoHS compliant?

A: Yes. Both the DDZ23-7 and NZH24C,115 are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity), making them suitable for standard industrial and commercial applications without additional handling restrictions.

Q: What does AEC-Q100 qualification mean for the NZH24C,115?

A: AEC-Q100 is an automotive industry qualification standard indicating the part has undergone enhanced reliability testing and screening. This qualification does not affect the electrical specifications but indicates suitability for automotive applications requiring higher reliability assurance.