2M6.8Z B0G Zener Diode Equivalent & Substitute Parts

Part Overview

The 2M6.8Z B0G is a 6.8 V, 2 W Zener diode manufactured by Taiwan Semiconductor Corporation, housed in a DO-204AC (DO-15) axial through-hole package. This component is classified as Active and maintains full RoHS3 compliance with REACH Unaffected status. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage applications in electronic circuits. Substitute parts are identified based on matching nominal Zener voltage, tolerance, package compatibility, and operating temperature range to ensure functional equivalence in circuit applications.

Substiute Parts

2M6.8Z B0G

Taiwan Semiconductor CorporationIn Stock: 9202M6.8Z B0G Datasheet

Current PartRFQ

1N5342B-TP

Micro Commercial CoIn Stock: 234681N5342B-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2M6.8Z B0G are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Nominal Zener voltage of 6.8 V
• Tolerance of ±5%
• Through-hole axial package configuration (DO-15 / DO-204AC)
• Operating temperature range compatibility
• RoHS3 compliance and REACH Unaffected status

Secondary Considerations:

• Power dissipation rating (equal or greater)
• Impedance characteristics
• Reverse leakage current specifications

The substitute part 1N5342B-TP meets all primary matching criteria. While it features a higher power rating (5 W versus 2 W) and lower impedance (1 Ohm versus 1.5 Ohms), these characteristics represent enhanced performance capabilities that do not compromise circuit compatibility. The substitute maintains identical nominal Zener voltage and tolerance specifications, ensuring voltage regulation performance equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the 2M6.8Z B0G and 1N5342B-TP are Active products with full RoHS3 compliance and REACH Unaffected status, ensuring regulatory compliance for current and future applications. The components share identical nominal Zener voltage (6.8 V) and tolerance specifications (±5%), making them functionally equivalent for voltage regulation and reference applications.

The 1N5342B-TP substitute offers enhanced performance characteristics through increased power dissipation capability (5 W versus 2 W) and improved impedance performance (1 Ohm versus 1.5 Ohms). These enhancements provide greater thermal margin and superior dynamic response without introducing compatibility issues. The substitute maintains through-hole axial package compatibility and operates within the required temperature range for most applications.

Selection between these components should be based on circuit power dissipation requirements and thermal design considerations. The 2M6.8Z B0G is suitable for applications with power dissipation up to 2 W, while the 1N5342B-TP accommodates applications requiring up to 5 W dissipation capacity.

Frequently Asked Questions (FAQ)

Q: Can the 1N5342B-TP directly replace the 2M6.8Z B0G in existing circuits?

A: Yes. Both components share identical nominal Zener voltage (6.8 V) and tolerance (±5%), identical through-hole axial package configuration (DO-15), and equivalent operating temperature ranges. The substitute's higher power rating and lower impedance represent performance enhancements that do not compromise circuit compatibility.

Q: What is the significance of the power rating difference between these components?

A: The 2M6.8Z B0G is rated for 2 W maximum power dissipation, while the 1N5342B-TP is rated for 5 W. This difference indicates thermal handling capacity. The substitute can dissipate greater power without exceeding junction temperature limits, providing additional thermal margin in applications approaching the original component's power limits.

Q: Are the package dimensions identical between these components?

A: Both components use the DO-204AC (DO-15) axial through-hole package configuration. This ensures mechanical and electrical compatibility in PCB layouts and circuit board designs without modification.

Q: Do both components meet current regulatory requirements?

A: Yes. Both the 2M6.8Z B0G and 1N5342B-TP are RoHS3 compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.

Q: What is the difference in reverse leakage current between these components?

A: The 2M6.8Z B0G specifies 1 mA reverse leakage at 5.5 V, while the 1N5342B-TP specifies 10 µA at 5.2 V. The substitute exhibits lower reverse leakage current, indicating superior reverse bias performance and reduced standby current in circuit applications.

Q: Are there any temperature range limitations when substituting the 1N5342B-TP?

A: The 1N5342B-TP operates from -55°C to 150°C, while the 2M6.8Z B0G operates to 175°C. For applications requiring operation above 150°C, the original component is required. For standard industrial and commercial temperature ranges, the substitute is fully compatible.