ZMM5246B-7 Equivalent & Substitute Parts

Part Overview

The ZMM5246B-7 is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 16 V nominal Zener voltage with 500 mW maximum power dissipation. This component is designed for voltage regulation and protection applications in surface mount configurations using the Mini MELF package format.

The ZMM5246B-7 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and design continuity where this component was previously specified.

Substiute Parts

ZMM5246B-7

Vishay General Semiconductor - Diodes DivisionIn Stock: 1965ZMM5246B-7 Datasheet

Current PartRFQ

1N5246BUR-1/TR

Microchip TechnologyIn Stock: 8971N5246BUR-1/TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZMM5246B-7 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Voltage - Zener (Nom): 16 V
• Tolerance: ±5%
• Power - Max: 500 mW
• Impedance (Max): 17 Ohms
• Current - Reverse Leakage @ Vr: 100 nA @ 12 V
• Operating Temperature Range: -65°C to 175°C

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package / Case: DO-213AA

Compliance Parameters:

• RoHS Status: ROHS3 Compliant

The 1N5246BUR-1/TR manufactured by Microchip Technology meets all specified electrical and mechanical parameters, confirming its status as a parametric equivalent for the obsolete ZMM5246B-7.

Parameter Comparison

Engineering Selection Recommendations

The 1N5246BUR-1/TR is a direct parametric equivalent to the ZMM5246B-7 across all critical electrical and mechanical specifications. The substitute part is manufactured by Microchip Technology and maintains active product status, ensuring ongoing availability and supply chain continuity.

Both components are ROHS3 compliant and operate across the identical temperature range of -65°C to 175°C. The forward voltage characteristic of the 1N5246BUR-1/TR (1.1 V @ 200 mA) is lower than the ZMM5246B-7 (1.5 V @ 200 mA), which represents an improvement in forward conduction performance and does not introduce compatibility issues in standard voltage regulation and protection circuits.

The 1N5246BUR-1/TR is supplied in Tape & Reel packaging format, suitable for automated assembly operations. Current inventory availability is 795 pieces.

Frequently Asked Questions (FAQ)

Q: Can the 1N5246BUR-1/TR replace the ZMM5246B-7 in existing designs?

A: Yes. The 1N5246BUR-1/TR meets all specified electrical parameters (16 V nominal Zener voltage, 500 mW power rating, ±5% tolerance, 17 Ohms maximum impedance) and mechanical requirements (DO-213AA package, surface mount configuration). Both components operate across -65°C to 175°C and are ROHS3 compliant.

Q: What is the difference in forward voltage between these parts?

A: The ZMM5246B-7 specifies a maximum forward voltage of 1.5 V at 200 mA, while the 1N5246BUR-1/TR specifies 1.1 V at 200 mA. The lower forward voltage of the substitute part does not create compatibility issues and represents improved forward conduction characteristics.

Q: Are there packaging differences between these components?

A: Both components use the DO-213AA package for surface mount applications. The ZMM5246B-7 is supplied in Mini MELF format, while the 1N5246BUR-1/TR is supplied in Tape & Reel format. The physical package dimensions and land pattern remain identical, ensuring direct PCB compatibility.

Q: Why is the ZMM5246B-7 classified as obsolete?

A: The ZMM5246B-7 has reached end-of-life status with the manufacturer. The 1N5246BUR-1/TR maintains active product status, providing a supported alternative for new designs and ongoing production requirements.

Q: What compliance certifications apply to the substitute part?

A: The 1N5246BUR-1/TR is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.