2EZ30D5-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 2EZ30D5-TP is a 30 V, 2 W Zener diode manufactured by Micro Commercial Co, housed in a DO-41 axial through-hole package. This component is classified as Active and maintains full RoHS3 compliance with REACH Unaffected status. The device operates across a temperature range of -55°C to 150°C and is suitable for voltage regulation and protection applications requiring precise 30 V reference characteristics.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit operation within the electrical and mechanical tolerances of alternative manufacturers' offerings.

Substiute Parts

2EZ30D5-TP

Micro Commercial CoIn Stock: 49422EZ30D5-TP Datasheet

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1N4751A

Lumimax Optoelectronic TechnologyIn Stock: 42271N4751A Datasheet

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1N4751ATR

Fairchild SemiconductorIn Stock: 438871N4751ATR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2EZ30D5-TP is determined by the following critical parameters:

Mandatory Matching Criteria:

• Voltage - Zener (Nominal): 30 V
• Tolerance: ±5%
• Mounting Type: Through Hole
• Package / Case: DO-41 or DO-204AL (Axial)

Allowable Variation Parameters:

• Power - Maximum: Substitute parts may operate at reduced power ratings (1 W minimum acceptable for most applications)
• Impedance (Maximum): Substitute parts may exhibit higher impedance values (up to 40 Ohms)
• Current - Reverse Leakage @ Vr: Substitute parts may exhibit higher leakage currents
• Operating Temperature Range: Substitute parts may have extended or different temperature ranges

The substitute parts 1N4751A and 1N4751ATR meet the mandatory matching criteria while operating at 1 W maximum power. Both maintain the 30 V nominal Zener voltage, ±5% tolerance, and DO-41 through-hole package configuration. These parts are electrically compatible for applications where the 2 W power rating of the primary part is not fully utilized.

Parameter Comparison

Engineering Selection Recommendations

2EZ30D5-TP (Primary Selection): The 2EZ30D5-TP remains the primary choice for applications requiring the full 2 W power dissipation capability and the lower 20 Ohm maximum impedance specification. This part maintains ROHS3 compliance and is actively manufactured by Micro Commercial Co with substantial inventory availability (4857 Pcs).

1N4751A (Substitute - Lumimax Optoelectronic Technology): The 1N4751A is electrically compatible for applications where power dissipation does not exceed 1 W. This part is RoHS Compliant and maintains the 30 V nominal Zener voltage with ±5% tolerance. The extended operating temperature range (-65°C to 200°C) provides additional thermal margin in extreme environment applications. Inventory availability is 4125 Pcs.

1N4751ATR (Substitute - Fairchild Semiconductor): The 1N4751ATR is electrically compatible for applications where power dissipation does not exceed 1 W. This part is actively manufactured by Fairchild Semiconductor with the highest inventory availability (43805 Pcs) and offers the most reliable supply chain position. The extended operating temperature range (-65°C to 200°C) matches the 1N4751A specification.

All three parts share identical nominal Zener voltage (30 V), tolerance (±5%), and through-hole DO-41 package configuration. Selection between substitute parts should be based on supply availability, lead time requirements, and application power dissipation constraints.

Frequently Asked Questions (FAQ)

Q: Can the 1N4751A or 1N4751ATR be used as direct replacements for the 2EZ30D5-TP?

A: Both substitute parts are electrically compatible for applications where power dissipation remains below 1 W. The 30 V nominal Zener voltage, ±5% tolerance, and DO-41 through-hole package are identical across all three parts. If your circuit design operates the Zener diode at power levels exceeding 1 W, the 2EZ30D5-TP must be retained as the primary component.

Q: What is the significance of the impedance difference between the main part and substitutes?

A: The 2EZ30D5-TP specifies a maximum impedance of 20 Ohms, while both substitute parts specify 40 Ohms maximum. Higher impedance results in increased voltage variation across the Zener diode under changing load conditions. For applications requiring tight voltage regulation, the lower impedance of the 2EZ30D5-TP is preferred. For general voltage reference applications, the 40 Ohm impedance of the substitutes is acceptable.

Q: Why do the substitute parts show higher reverse leakage current?

A: The 1N4751A and 1N4751ATR exhibit reverse leakage currents of 5 µA at 22.8 V, compared to 500 nA at 22.5 V for the 2EZ30D5-TP. This difference reflects manufacturing process variations between manufacturers. For most applications, this leakage current difference is negligible. Applications requiring extremely low leakage current should retain the 2EZ30D5-TP.

Q: Are all three parts RoHS compliant?

A: The 2EZ30D5-TP is ROHS3 Compliant. The 1N4751A is RoHS Compliant. The 1N4751ATR RoHS status is not specified in the provided data. Verify RoHS compliance requirements with your procurement department before selecting the 1N4751ATR for applications requiring documented RoHS certification.

Q: What is the difference between the packaging formats listed?

A: The 2EZ30D5-TP is supplied in Cut Tape (CT) format. The 1N4751A is supplied in Tape & Box (TB) format. The 1N4751ATR is supplied in Bulk format. All three parts use the same DO-41 axial through-hole package for circuit board installation. Packaging format differences affect only the delivery and handling method, not the electrical or mechanical characteristics of the component.

Q: Can I use the substitute parts in high-temperature applications?

A: Both substitute parts operate across -65°C to 200°C, which exceeds the -55°C to 150°C range of the 2EZ30D5-TP. For applications requiring operation above 150°C, the 1N4751A or 1N4751ATR provide extended thermal capability. Verify that other circuit components also support the extended temperature range before selecting these substitutes for extreme temperature environments.