MMFZ2V4T1G Zener Diode Equivalent & Substitute Parts

Part Overview

The MMFZ2V4T1G is a 2.4 V Zener diode rated at 500 mW in SOD-123 surface mount packaging, manufactured by onsemi. This component is classified as obsolete, indicating discontinuation from the manufacturer's active product line. Finding equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for applications utilizing this diode specification.

Substiute Parts

MMFZ2V4T1G

onsemiIn Stock: 1179MMFZ2V4T1G Datasheet

Current PartRFQ

MMSZ2V4T1G

onsemiIn Stock: 2450MMSZ2V4T1G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMFZ2V4T1G is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Zener voltage: 2.4 V nominal
• Power dissipation rating: 500 mW maximum
• Package type: SOD-123 surface mount
• Mounting configuration: Surface mount

Secondary Compatibility Factors:

• Moisture sensitivity level: 1 (Unlimited) or equivalent
• Regulatory compliance: REACH Unaffected status
• Supplier device package: SOD-123

The MMSZ2V4T1G qualifies as a direct substitute because it maintains identical electrical specifications (2.4 V Zener voltage, 500 mW power rating) and identical physical packaging (SOD-123 surface mount). The substitute part is manufactured by the same supplier (onsemi) and carries active product status, ensuring ongoing availability and supply chain support.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution Eligibility:

The MMSZ2V4T1G is a direct substitute for the MMFZ2V4T1G based on electrical and mechanical parameter equivalence. Both components share identical Zener voltage (2.4 V), power rating (500 mW), and SOD-123 surface mount packaging. The substitute part carries active product status from onsemi, ensuring current manufacturing support and supply availability.

Compliance and Certification Alignment:

Both the main part and substitute maintain REACH Unaffected status and EAR99 export classification. The MMSZ2V4T1G additionally carries ROHS3 compliance certification, meeting modern regulatory requirements. Moisture sensitivity level remains constant at MSL 1 (Unlimited), indicating no special handling requirements for either component.

Supply Chain Considerations:

The MMFZ2V4T1G is obsolete with limited inventory (1094 Pcs reported). The MMSZ2V4T1G is active with substantially higher inventory availability (2400 Pcs reported), providing superior supply chain continuity for new designs and ongoing production requirements.

Packaging and Handling:

The substitute part is available in Cut Tape (CT) and Digi-Reel® packaging formats, offering flexibility for both manual assembly and automated production environments. Physical footprint and PCB land pattern compatibility are maintained through identical SOD-123 package specification.

Frequently Asked Questions (FAQ)

Q: Can MMSZ2V4T1G be used as a direct replacement for MMFZ2V4T1G in existing designs?

A: Yes. Both components are 2.4 V, 500 mW Zener diodes in SOD-123 surface mount packaging manufactured by onsemi. Electrical specifications and physical dimensions are equivalent, permitting direct substitution without circuit redesign or PCB layout modification.

Q: What is the primary reason to switch from MMFZ2V4T1G to MMSZ2V4T1G?

A: The MMFZ2V4T1G is classified as obsolete, indicating manufacturer discontinuation. The MMSZ2V4T1G is an active product with ongoing manufacturing support and superior inventory availability, ensuring long-term supply chain reliability.

Q: Are there differences in electrical performance between these two parts?

A: Both parts maintain identical nominal Zener voltage (2.4 V) and power rating (500 mW). The MMSZ2V4T1G provides additional published specifications including ±5% tolerance, 100 Ohms maximum impedance, 50 µA reverse leakage current at 1 V, and 900 mV maximum forward voltage at 10 mA. These specifications define the substitute's performance envelope and do not indicate performance degradation relative to the main part.

Q: Do packaging and handling requirements differ between these components?

A: Both components carry identical Moisture Sensitivity Level 1 (Unlimited), requiring no special moisture control during storage or handling. The MMSZ2V4T1G is available in Cut Tape (CT) and Digi-Reel® formats, providing packaging flexibility for different assembly processes.

Q: Are there regulatory or compliance differences?

A: Both components maintain REACH Unaffected status and EAR99 export classification. The MMSZ2V4T1G additionally carries ROHS3 compliance certification, meeting current environmental and hazardous substance restrictions applicable to electronic components.

Q: What is the operating temperature range for these components?

A: The MMFZ2V4T1G does not specify an operating temperature range in available documentation. The MMSZ2V4T1G operates across -55°C to 150°C, covering standard industrial and commercial temperature ranges for surface mount Zener diodes.

Q: Can MMSZ2V4T1G be used in applications requiring the exact specifications of MMFZ2V4T1G?

A: Yes. The substitute part meets or exceeds all critical electrical parameters (Zener voltage, power rating) and physical requirements (SOD-123 package, surface mount configuration) of the main part. The additional published specifications of the substitute provide greater design certainty without introducing incompatibility.