NZ9F24VT5G Equivalent & Substitute Parts

Part Overview

The NZ9F24VT5G is an active-status Zener diode manufactured by onsemi, rated for 24 V nominal Zener voltage with 250 mW maximum power dissipation. The device is packaged in SOD-923 surface mount configuration and complies with RoHS3 and REACH standards. This component is used in voltage regulation and protection circuits requiring stable reference voltages in the 24 V range. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility allow direct replacement in circuit applications.

Substiute Parts

NZ9F24VT5G

onsemiIn Stock: 122814NZ9F24VT5G Datasheet

Current PartRFQ

BZX585-B24,115

Nexperia USA Inc.In Stock: 3830BZX585-B24,115 Datasheet

SimilarRFQ

BZX585-C24,115

NXP SemiconductorsIn Stock: 252288BZX585-C24,115 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the NZ9F24VT5G are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Zener (Nom): 24 V (exact match required)
• Impedance (Max): 70 Ohms (exact match required)
• Operating Temperature Range: -65°C to 150°C (exact match required)
• Mounting Type: Surface Mount (required for PCB compatibility)
• RoHS3 Compliance: Required for regulatory alignment

Secondary Compatibility Factors:

• Power - Max: Substitute parts rated at 300 mW exceed the 250 mW requirement and are acceptable for applications where the original 250 mW rating is sufficient
• Tolerance: Substitute parts with ±2% tolerance provide tighter voltage regulation than the ±5% specification and are compatible
• Package / Case: SOD-523 packages are mechanically distinct from SOD-923; substitution requires PCB footprint verification

The identified substitute parts BZX585-B24,115 and BZX585-C24,115 meet all primary criteria and maintain electrical equivalence within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

NZ9F24VT5G (onsemi): Primary component selection for applications requiring SOD-923 package form factor. Active product status with full RoHS3 and REACH compliance. Suitable for standard 24 V regulation and protection circuits with 250 mW power budget.

BZX585-B24,115 (Nexperia): Qualified substitute for applications permitting SOD-523 package migration. Provides tighter ±2% tolerance specification and higher 300 mW power rating. Carries AEC-Q100 automotive qualification, suitable for automotive-grade applications. Active product status with full compliance certifications.

BZX585-C24,115 (NXP): Qualified substitute for applications permitting SOD-523 package migration. Maintains ±5% tolerance matching the primary part specification. Provides higher 300 mW power rating. Active product status with full compliance certifications. Bulk packaging available for high-volume procurement.

Selection between substitute parts depends on package compatibility with existing PCB designs and tolerance requirements for the target application. Both substitutes maintain electrical equivalence across all critical parameters.

Frequently Asked Questions (FAQ)

Q: Can BZX585-B24,115 or BZX585-C24,115 directly replace NZ9F24VT5G on existing PCBs?

A: Direct PCB replacement requires footprint compatibility verification. The NZ9F24VT5G uses SOD-923 package, while substitute parts use SOD-523 package. These packages have different land patterns and pin spacing. PCB layout modification is necessary for physical substitution.

Q: What is the significance of the ±2% tolerance on BZX585-B24,115 compared to ±5% on the primary part?

A: The ±2% tolerance specification on BZX585-B24,115 indicates tighter Zener voltage regulation around the 24 V nominal value. This provides improved voltage stability in regulation circuits. The ±5% tolerance on NZ9F24VT5G and BZX585-C24,115 allows wider voltage variation but remains acceptable for most standard applications.

Q: Are the 300 mW power ratings on substitute parts compatible with circuits designed for 250 mW?

A: Yes. The 300 mW rating on BZX585-B24,115 and BZX585-C24,115 represents maximum power dissipation capability. These parts operate within the 250 mW power budget of the original design. The higher rating provides additional thermal margin and does not affect circuit operation.

Q: What is the impact of different reverse leakage current specifications?

A: The substitute parts specify 50 nA @ 16.8 V compared to 100 nA @ 18.9 V on the primary part. Lower reverse leakage current indicates reduced off-state current flow, which improves circuit efficiency in low-power applications. Both specifications are acceptable for standard voltage regulation circuits.

Q: Does AEC-Q100 qualification on BZX585-B24,115 affect its use in non-automotive applications?

A: No. AEC-Q100 qualification indicates the part meets automotive reliability standards and is suitable for automotive environments. This qualification does not restrict use in non-automotive applications and provides additional quality assurance for any application requiring high reliability.

Q: Are all three parts RoHS3 and REACH compliant?

A: Yes. NZ9F24VT5G, BZX585-B24,115, and BZX585-C24,115 are all RoHS3 compliant and REACH unaffected. All parts meet current environmental and regulatory requirements for electronic component procurement.