ZMM5235B-13 Equivalent & Substitute Parts Reference

Part Overview

The ZMM5235B-13, manufactured by Vishay General Semiconductor - Diodes Division, is a Zener diode designed for surface mount applications. Key features include a nominal zener voltage of 6.8 V, 500 mW max power, ±5% tolerance, low reverse leakage, and DO-213AA (GL34) package. This part is classified as obsolete. To maintain circuit functionality and supply continuity, it is necessary to identify alternative models with matching or tighter electrical and mechanical parameters.

Key Parameters

Parameter	Value
Voltage - Zener (Nom) (Vz)	6.8 V
Tolerance	±5%
Power - Max	500 mW
Impedance (Max) (Zzt)	5 Ohms
Current - Reverse Leakage @ Vr	3 µA @ 5 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	DO-213AA (Glass)
Supplier Device Package	DO-213AA (GL34)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ZMM5235B-13 are determined based on matching electrical and mechanical parameters. Substitution logic is strictly based on:

Nominal zener voltage (Vz): 6.8 V
Tolerance: ±5% or better (including ±2%, ±1%)
Power handling: 500 mW max
Maximum zener impedance (Zzt): 5 Ohms
Reverse leakage current at specified voltage: 3 µA @ 5 V (substitutes: 2 µA @ 4 V)
Maximum forward voltage at specified test current: 1.5 V @ 200 mA (substitutes: 1.1 V @ 200 mA)
Operating temperature range: -65°C ~ 175°C
Surface mount, DO-213AA package
RoHS compliance

All stated substitute parts conform to these criteria.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Zener (Vz)	Tolerance	Power - Max	Impedance (Zzt)	Reverse Leakage	Forward Voltage (Vf)	Operating Temperature	Mounting Type	Package / Case	RoHS Status
ZMM5235B-13	Vishay	6.8 V	±5%	500 mW	5 Ohms	3 µA @ 5 V	1.5 V @ 200 mA	-65°C ~ 175°C	Surface Mount	DO-213AA (GL34)	ROHS3
JAN1N754AUR-1/TR	Microchip Technology	6.8 V	±5%	500 mW	5 Ohms	2 µA @ 4 V	1.1 V @ 200 mA	-65°C ~ 175°C	Surface Mount	DO-213AA	ROHS3
JAN1N754CUR-1/TR	Microchip Technology	6.8 V	±2%	500 mW	5 Ohms	2 µA @ 4 V	1.1 V @ 200 mA	-65°C ~ 175°C	Surface Mount	DO-213AA	ROHS3
JAN1N754DUR-1/TR	Microchip Technology	6.8 V	±1%	500 mW	5 Ohms	2 µA @ 4 V	1.1 V @ 200 mA	-65°C ~ 175°C	Surface Mount	DO-213AA	ROHS3
JANTX1N754DUR-1/TR	Microchip Technology	6.8 V	±1%	500 mW	5 Ohms	2 µA @ 4 V	1.1 V @ 200 mA	-65°C ~ 175°C	Surface Mount	DO-213AA	ROHS3
JANTXV1N754AUR-1/TR	Microchip Technology	6.8 V	±5%	500 mW	5 Ohms	2 µA @ 4 V	1.1 V @ 200 mA	-65°C ~ 175°C	Surface Mount	DO-213AA	ROHS3
JANTXV1N754CUR-1/TR	Microchip Technology	6.8 V	±2%	500 mW	5 Ohms	2 µA @ 4 V	1.1 V @ 200 mA	-65°C ~ 175°C	Surface Mount	DO-213AA	ROHS3
JANTXV1N754DUR-1/TR	Microchip Technology	6.8 V	±1%	500 mW	5 Ohms	2 µA @ 4 V	1.1 V @ 200 mA	-65°C ~ 175°C	Surface Mount	DO-213AA	ROHS3

Engineering Selection Recommendations

The original part number ZMM5235B-13 is obsolete. Substitute models JAN1N754AUR-1/TR, JAN1N754CUR-1/TR, JAN1N754DUR-1/TR, JANTX1N754DUR-1/TR, JANTXV1N754AUR-1/TR, JANTXV1N754CUR-1/TR, and JANTXV1N754DUR-1/TR from Microchip Technology are active and ROHS3 compliant. All substitutes have equivalent or better tolerances and are supplied in the same DO-213AA surface-mount package. Each alternative maintains compliance with relevant certifications.

Frequently Asked Questions (FAQ)

Q1: What parameters must match when selecting a Zener diode substitute in this category?
A1: Substitution requires matching nominal zener voltage, maximum power rating, tolerance (same or tighter), maximum impedance, reverse leakage current, forward voltage rating, operating temperature range, and package.

Q2: Are all substitute part numbers provided compatible in footprint and mounting?
A2: All listed substitutes use the DO-213AA surface-mount package, ensuring mechanical compatibility.

Q3: Does switching to a substitute affect compliance or environmental standards?
A3: All substitute parts are ROHS3 compliant.

Q4: How do tolerances of substitute parts compare to the original ZMM5235B-13?
A4: Substitute tolerances include ±5% (same as original), as well as tighter ±2% and ±1% options.

Q5: Can substitute Zener diodes be used in the same operating temperature range?
A5: All substitutes match the -65°C to +175°C operating temperature specification.

Q6: Are there any differences in electrical parameters impacting substitute suitability?
A6: All substitutes provide zener voltage, maximum power, impedance, and package matching the original; reverse leakage current for substitutes is specified at a different voltage (2 µA @ 4 V vs. 3 µA @ 5 V), and forward voltage is lower (1.1 V @ 200 mA vs. 1.5 V @ 200 mA). All differences remain within accepted ranges for direct substitution as per provided parameters.

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