MMFZ47T3G Equivalent & Substitute Parts

Part Overview

The MMFZ47T3G is a Zener diode rated at 47 V nominal voltage with 500 mW maximum power dissipation in a surface mount SOD-123 package, manufactured by onsemi. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity. The MMFZ47T3G serves applications requiring voltage regulation and transient protection in 47 V circuits with moderate power requirements.

Substiute Parts

MMFZ47T3G

onsemiIn Stock: 921MMFZ47T3G Datasheet

Current PartRFQ

MMSZ47T3G

onsemiIn Stock: 915MMSZ47T3G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMFZ47T3G is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage rating: 47 V nominal
• Maximum power dissipation: 500 mW
• Package type: SOD-123 surface mount
• Mounting configuration: Surface mount

The MMSZ47T3G qualifies as a direct substitute based on matching all primary electrical and mechanical parameters. Both devices maintain identical zener voltage (47 V), power rating (500 mW), and package configuration (SOD-123 surface mount). The MMSZ47T3G is an active product with enhanced specifications including defined tolerance (±5%), operating temperature range (-55°C to 150°C), and RoHS3 compliance, providing superior availability and regulatory alignment compared to the obsolete MMFZ47T3G.

Parameter Comparison

Engineering Selection Recommendations

The MMSZ47T3G is the primary substitute for the obsolete MMFZ47T3G. Both components share identical electrical specifications (47 V zener voltage, 500 mW power rating) and mechanical configuration (SOD-123 surface mount package). The MMSZ47T3G offers the advantage of active product status, ensuring continued availability and manufacturing support. Both parts maintain equivalent regulatory compliance with REACH Unaffected status and EAR99 export classification. The MMSZ47T3G includes defined tolerance (±5%) and operating temperature range (-55°C to 150°C), providing enhanced specification clarity. RoHS3 compliance of the MMSZ47T3G aligns with current environmental standards. Direct pin-for-pin and footprint compatibility is confirmed through identical SOD-123 packaging.

Frequently Asked Questions (FAQ)

Q: Can the MMSZ47T3G directly replace the MMFZ47T3G in existing designs?

A: Yes. The MMSZ47T3G provides direct substitution with identical zener voltage (47 V), power rating (500 mW), and SOD-123 surface mount package. Pin-for-pin and footprint compatibility is confirmed.

Q: What is the primary reason for substituting the MMFZ47T3G?

A: The MMFZ47T3G is classified as obsolete. The MMSZ47T3G is an active product from the same manufacturer, ensuring continued availability and manufacturing support.

Q: Are there electrical performance differences between the MMFZ47T3G and MMSZ47T3G?

A: Both devices maintain identical nominal zener voltage (47 V) and maximum power dissipation (500 mW). The MMSZ47T3G specifies additional parameters including ±5% tolerance, 170 Ohms maximum impedance, 50 nA reverse leakage current at 32.9 V, and 900 mV maximum forward voltage at 10 mA, providing enhanced specification definition.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the MMFZ47T3G and MMSZ47T3G maintain REACH Unaffected status and EAR99 export classification. The MMSZ47T3G additionally provides RoHS3 compliance.

Q: What is the operating temperature range for the MMSZ47T3G?

A: The MMSZ47T3G operates across -55°C to 150°C. The MMFZ47T3G does not specify an operating temperature range in the provided data.

Q: Are packaging and moisture sensitivity equivalent?

A: Yes. Both devices use SOD-123 surface mount packaging with Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions.