Equivalent & Substitute Parts Reference: ZMM5244B-13

Part Overview

The Vishay General Semiconductor ZMM5244B-13 is a Zener Diode designed for voltage regulation, featuring a 14 V nominal Zener voltage, 500 mW power dissipation, and ±5% tolerance in a surface mount Mini MELF (DO-213AA) package. The part status is listed as obsolete, making it necessary to identify parametric equivalents to ensure continued support and design compatibility in applications where the exact specifications and form factor are required.

Key Parameters

Manufacturer Part Number	Manufacturer	Category	Voltage - Zener (Nom) (Vz)	Tolerance	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	Moisture Sensitivity Level (MSL)	ECCN	HTSUS
ZMM5244B-13	Vishay General Semiconductor - Diodes Division	Diodes, Zener	14 V	±5%	500 mW	15 Ohms	100 nA @ 10 V	1.5 V @ 200 mA	-65°C ~ 175°C (TJ)	Surface Mount	DO-213AA	Mini MELF	1 (Unlimited)	EAR99	8541.10.0050

Substitute Part Grouping Explanation

Substitution logic for Zener diodes in this product category is strictly based on matching the following key parameters: Zener voltage (Vz), tolerance, maximum power dissipation, maximum impedance (Zzt), reverse leakage current at rated voltage, maximum forward voltage at rated current, operating temperature range, mounting type, and package/case type. Only parts meeting all these criteria are considered parametric equivalents for substitution.

Parameter Comparison

Parameter	ZMM5244B-13	1N5244BUR-1/TR
Manufacturer	Vishay General Semiconductor - Diodes Division	Microchip Technology
Category	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	14 V	14 V
Tolerance	±5%	±5%
Power - Max	500 mW	500 mW
Impedance (Max) (Zzt)	15 Ohms	15 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 10 V	100 nA @ 10 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature	-65°C ~ 175°C (TJ)	-65°C ~ 175°C (TJ)
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-213AA	DO-213AA
Supplier Device Package	Mini MELF	DO-213AA
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050

Engineering Selection Recommendations

ZMM5244B-13 is listed as obsolete. The substitute part 1N5244BUR-1/TR is active and meets all regulatory compliance requirements including RoHS3 and ECCN: EAR99. Both parts share identical mounting types, package formats, and parametric ratings outlined above, supporting direct substitution where regulatory, form factor, and electrical performance considerations are required.

Frequently Asked Questions (FAQ)

Q1: What parameters are essential for substituting Zener diodes in this category?
A1: Substitution must be based on Zener voltage, tolerance, maximum power dissipation, impedance, reverse leakage current, forward voltage, operating temperature range, mounting type, and package/case type.

Q2: Is it necessary to match the package/case exactly when replacing ZMM5244B-13?
A2: Yes, matching the DO-213AA Mini MELF package ensures mechanical compatibility for surface mount designs.

Q3: Does the substitute part 1N5244BUR-1/TR have the same electrical performance?
A3: All key parameters except the maximum forward voltage at rated current are identical. Review application tolerance for variations in forward voltage.

Q4: Are there any compliance differences between ZMM5244B-13 and 1N5244BUR-1/TR?
A4: Both parts have an MSL rating of 1 (Unlimited) and ECCN: EAR99, supporting unrestricted supply and manufacturing compliance.

Q5: What is the impact of part status on component selection?
A5: ZMM5244B-13 is obsolete, necessitating the selection of active and available parametric equivalents for ongoing design and procurement.

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