MMXZ5252B-TP Zener Diode 24V 200mW Equivalent & Substitute Parts

Part Overview

The MMXZ5252B-TP is a 24 V, 200 mW surface mount zener diode manufactured by Micro Commercial Co in SOD-323 packaging. This component is classified as Active and is in current production. The part is RoHS3 compliant and MSL Level 1, indicating unlimited moisture sensitivity tolerance. Equivalent and substitute parts are identified based on matching or exceeding the core electrical specifications: 24 V nominal zener voltage, 200 mW power dissipation, ±5% tolerance, and surface mount SOD-323 package compatibility. Alternative sources are necessary to address supply chain flexibility, inventory availability, and application-specific performance requirements.

Substiute Parts

MMXZ5252B-TP

Micro Commercial CoIn Stock: 3963MMXZ5252B-TP Datasheet

Current PartRFQ

MMSZ5252BS-7-F

Diodes IncorporatedIn Stock: 30696MMSZ5252BS-7-F Datasheet

UpgradeRFQ

BZX84J-B24,115

Nexperia USA Inc.In Stock: 263947BZX84J-B24,115 Datasheet

SimilarRFQ

DDZ9709S-7

Diodes IncorporatedIn Stock: 4472DDZ9709S-7 Datasheet

SimilarRFQ

MM3Z24VB

Fairchild SemiconductorIn Stock: 1234MM3Z24VB Datasheet

SimilarRFQ

MM3Z24VC

Fairchild SemiconductorIn Stock: 3412MM3Z24VC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MMXZ5252B-TP are grouped into two categories based on electrical and mechanical compatibility:

Direct Equivalents (Upgrade Category): Parts that match or exceed all primary electrical specifications while maintaining SOD-323 package compatibility. These parts satisfy the core substitution criteria: 24 V nominal zener voltage, 200 mW power rating, ±5% tolerance, surface mount configuration, and identical or superior operating temperature range.

Similar Alternatives (Extended Category): Parts that maintain the 24 V zener voltage and surface mount technology but differ in one or more secondary parameters such as power dissipation, tolerance, impedance, or package variant (SOD-323F). These parts are suitable for applications where the primary electrical function is preserved and the parameter differences do not conflict with circuit requirements.

Key Substitution Criteria:

• Zener voltage: 24 V nominal (fixed requirement)
• Power dissipation: 200 mW minimum
• Tolerance: ±5% or better
• Package: SOD-323 or SOD-323F (mechanically compatible)
• Mounting: Surface mount
• Compliance: RoHS3, MSL Level 1

Parameter Comparison

Engineering Selection Recommendations

MMSZ5252BS-7-F (Diodes Incorporated): This part is classified as a direct upgrade equivalent. It matches all primary electrical specifications of the MMXZ5252B-TP: 24 V zener voltage, 200 mW power dissipation, ±5% tolerance, and SOD-323 package. The operating temperature range extends to -65°C, providing superior low-temperature performance. Both parts are RoHS3 compliant and MSL Level 1. This substitute is suitable for direct replacement in applications requiring identical electrical performance and packaging.

BZX84J-B24,115 (Nexperia USA Inc.): This part offers enhanced power dissipation at 550 mW, exceeding the 200 mW specification of the main part. It maintains 24 V zener voltage and features improved tolerance at ±2%. The package variant is SOD-323F, which is mechanically compatible with SOD-323 footprints. This part carries AEC-Q101 automotive qualification and is suitable for applications requiring higher thermal headroom or automotive-grade reliability. RoHS3 compliance and MSL Level 1 are maintained.

DDZ9709S-7 (Diodes Incorporated): This part matches the core electrical specifications: 24 V zener voltage, 200 mW power dissipation, and ±5% tolerance. The SOD-323 package is identical to the main part. Operating temperature range extends to -65°C. This substitute is suitable for direct replacement where supply chain alternatives are required.

MM3Z24VB (Fairchild Semiconductor): This part maintains 24 V zener voltage and 200 mW power dissipation with improved tolerance at ±2%. The SOD-323F package variant is mechanically compatible. Operating temperature range extends to -65°C. Impedance is specified at 65 Ohms, which differs from the main part's 33 Ohms specification. This substitute is suitable for applications where tighter voltage tolerance is beneficial.

MM3Z24VC (Fairchild Semiconductor): This part matches the main part's 24 V zener voltage, 200 mW power dissipation, and ±5% tolerance. The SOD-323F package variant is mechanically compatible. Operating temperature range extends to -65°C. Impedance is specified at 65 Ohms. This substitute provides equivalent electrical performance with extended temperature range.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5252BS-7-F be used as a direct replacement for MMXZ5252B-TP?

A: Yes. Both parts share identical electrical specifications: 24 V nominal zener voltage, 200 mW power dissipation, ±5% tolerance, and SOD-323 package. The MMSZ5252BS-7-F extends the operating temperature range to -65°C, providing enhanced performance at lower temperatures. Both parts are RoHS3 compliant and MSL Level 1.

Q: What is the difference between SOD-323 and SOD-323F packages?

A: SOD-323 and SOD-323F are mechanically compatible surface mount packages with identical footprints and lead spacing. The SOD-323F variant features a flat-top package design. Parts specified in either package can be used interchangeably on the same PCB layout.

Q: Is BZX84J-B24,115 suitable for applications designed for the MMXZ5252B-TP?

A: BZX84J-B24,115 is suitable for applications where the higher power dissipation (550 mW versus 200 mW) does not create thermal or circuit design conflicts. The 24 V zener voltage is identical. The improved tolerance (±2% versus ±5%) provides tighter voltage regulation. The AEC-Q101 automotive qualification makes this part suitable for automotive and high-reliability applications.

Q: What is the significance of impedance differences among these parts?

A: Impedance (Zzt) affects the dynamic response of the zener diode under transient conditions. The main part specifies 33 Ohms maximum impedance. Substitute parts with higher impedance values (such as MM3Z24VB and MM3Z24VC at 65 Ohms) exhibit slower transient response. For applications requiring precise transient suppression, impedance specifications should be evaluated against circuit requirements.

Q: Are all substitute parts RoHS3 compliant?

A: MMSZ5252BS-7-F, BZX84J-B24,115, and DDZ9709S-7 are explicitly specified as RoHS3 compliant. MM3Z24VB and MM3Z24VC do not include RoHS status in the provided specifications. For applications requiring RoHS3 compliance certification, use MMSZ5252BS-7-F, BZX84J-B24,115, or DDZ9709S-7.

Q: What is MSL Level 1 and why is it important?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited moisture sensitivity tolerance. Components rated MSL 1 do not require special moisture control during storage, handling, or assembly. All listed parts are MSL Level 1, ensuring compatibility with standard manufacturing processes.

Q: Can I use MM3Z24VB or MM3Z24VC if my application requires ±5% tolerance?

A: MM3Z24VB is specified at ±2% tolerance, which is tighter than the ±5% requirement and is therefore acceptable. MM3Z24VC is specified at ±5% tolerance and directly matches the tolerance requirement. Both parts are suitable for applications requiring ±5% tolerance.

Q: What is the operating temperature advantage of substitute parts?

A: The main part MMXZ5252B-TP operates from -55°C to 150°C. All substitute parts extend the lower temperature limit to -65°C, providing 10°C additional margin at low temperatures. This extended range is beneficial for applications in cold environments or where thermal cycling stress is a concern.