1N4733A_S00Z Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4733A_S00Z is a 5.1 V, 1 W Zener diode manufactured by onsemi in a through-hole DO-41 package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The part maintains full electrical and mechanical compatibility with active alternatives that share identical nominal specifications.

Substiute Parts

1N4733A_S00Z

onsemiIn Stock: 9001N4733A_S00Z Datasheet

Current PartRFQ

1N4733A

Lumimax Optoelectronic TechnologyIn Stock: 202551N4733A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N4733A_S00Z is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Zener voltage (nominal): 5.1 V
• Voltage tolerance: ±5%
• Maximum power dissipation: 1 W
• Maximum impedance: 7 Ohms
• Reverse leakage current: 10 µA @ 1 V
• Operating temperature range: -65°C to 200°C

Mechanical Equivalence Criteria:

• Mounting type: Through Hole
• Package designation: DO-41 (DO-204AL, Axial)

Substitute parts must satisfy all electrical parameters within the specified tolerances and maintain identical through-hole axial package configuration to ensure direct board-level compatibility without circuit redesign or PCB modification.

Parameter Comparison

Engineering Selection Recommendations

1N4733A (Lumimax Optoelectronic Technology)

This substitute part is the direct equivalent to the obsolete 1N4733A_S00Z. Selection criteria are based on the following factors:

Product Status: The Lumimax 1N4733A is classified as Active, ensuring continued availability and supply chain stability compared to the obsolete onsemi part.

Electrical Compatibility: All critical electrical parameters match exactly: 5.1 V nominal zener voltage, ±5% tolerance, 1 W maximum power, 7 Ohms maximum impedance, and 10 µA reverse leakage current. Operating temperature range is identical at -65°C to 200°C.

Mechanical Compatibility: Both parts utilize identical through-hole DO-41 axial package configuration, enabling direct board-level substitution without PCB layout modification.

Compliance Status: The Lumimax part carries RoHS Compliant certification and REACH Unaffected status, matching the regulatory profile of the original part. Both parts are classified under ECCN EAR99 and HTSUS 8541.10.0050.

Inventory Availability: The Lumimax 1N4733A maintains substantial stock levels (20,200 pcs), providing procurement reliability for production and replacement applications.

Frequently Asked Questions (FAQ)

Q: Can the 1N4733A from Lumimax directly replace the obsolete 1N4733A_S00Z from onsemi?

A: Yes. Both parts share identical electrical specifications (5.1 V, 1 W, ±5% tolerance, 7 Ohms impedance, 10 µA reverse leakage) and are packaged in the same through-hole DO-41 axial configuration. Direct substitution is possible without circuit modification or PCB redesign.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: nominal zener voltage (5.1 V), voltage tolerance (±5%), maximum power dissipation (1 W), maximum impedance (7 Ohms), reverse leakage current (10 µA @ 1 V), operating temperature range (-65°C to 200°C), and package type (through-hole DO-41 axial). All parameters must match exactly.

Q: Does the Lumimax 1N4733A have any advantages over the onsemi part?

A: The Lumimax 1N4733A is classified as Active, ensuring ongoing availability and supply continuity. It carries RoHS Compliant certification and provides additional forward voltage specification (1.2 V @ 200 mA). Inventory levels are significantly higher (20,200 pcs vs. 819 pcs).

Q: Are there any package differences between the two parts?

A: No. Both parts use identical through-hole DO-41 axial packaging (DO-204AL designation). Physical dimensions and pin configuration are equivalent, allowing direct board-level substitution.

Q: What is the moisture sensitivity level for the substitute part?

A: The original part specifies MSL 1 (Unlimited). The Lumimax substitute does not specify MSL in the provided data; however, this does not affect substitution compatibility for standard through-hole components.

Q: Are both parts compliant with international regulations?

A: Yes. Both the onsemi 1N4733A_S00Z and Lumimax 1N4733A are classified as REACH Unaffected and EAR99 (ECCN). The Lumimax part additionally carries RoHS Compliant certification.