1N4738A_S00Z Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4738A_S00Z is an 8.2 V, 1 W Zener diode manufactured by onsemi in a through-hole DO-41 package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement capability in existing circuit applications.

Substiute Parts

1N4738A_S00Z

onsemiIn Stock: 10691N4738A_S00Z Datasheet

Current PartRFQ

1N4738A

Lumimax Optoelectronic TechnologyIn Stock: 101231N4738A Datasheet

SimilarRFQ

1N4738ATA

onsemiIn Stock: 164461N4738ATA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1N4738A_S00Z are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Zener (Nominal): 8.2 V
• Tolerance: ±5%
• Power - Maximum: 1 W
• Impedance (Maximum): 4.5 Ohms
• Current - Reverse Leakage @ 6 V: 10 µA
• Operating Temperature Range: -65°C to 200°C

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: DO-204AL, DO-41, Axial

All identified substitute parts meet these criteria and are therefore suitable for direct replacement in applications requiring the 1N4738A_S00Z specifications.

Parameter Comparison

Engineering Selection Recommendations

1N4738A (Lumimax Optoelectronic Technology)

This substitute part is electrically and mechanically equivalent to the 1N4738A_S00Z. The component is active in production status and RoHS compliant. Packaging is supplied in Tape & Box format. This option is suitable for applications requiring RoHS compliance certification.

1N4738ATA (onsemi)

This substitute part is electrically and mechanically equivalent to the 1N4738A_S00Z and is manufactured by the same original equipment manufacturer. The component is active in production status. Packaging is supplied in bulk format. This option maintains continuity with the original manufacturer while providing an active alternative to the obsolete 1N4738A_S00Z. Note that this variant is RoHS non-compliant.

Both substitute parts satisfy the electrical and mechanical requirements for direct replacement. Selection between alternatives depends on specific application requirements regarding RoHS compliance status and packaging format.

Frequently Asked Questions (FAQ)

Q: Can the 1N4738A (Lumimax) directly replace the 1N4738A_S00Z (onsemi)?

A: Yes. Both components share identical electrical specifications (8.2 V nominal, 1 W power rating, ±5% tolerance, 4.5 Ohms maximum impedance, 10 µA reverse leakage current) and mechanical compatibility (through-hole mounting, DO-41 package). The Lumimax variant is active in production, whereas the original onsemi part is obsolete.

Q: What is the difference between the 1N4738ATA and the 1N4738A_S00Z?

A: Both parts are manufactured by onsemi and are electrically identical. The primary differences are product status (1N4738ATA is active; 1N4738A_S00Z is obsolete) and packaging format (1N4738ATA is supplied in bulk; 1N4738A_S00Z packaging is unspecified). The 1N4738ATA is RoHS non-compliant, whereas the original part status is not specified.

Q: Are there packaging differences between substitute options?

A: Yes. The 1N4738A (Lumimax) is supplied in Tape & Box packaging, while the 1N4738ATA (onsemi) is supplied in bulk packaging. Both use the DO-41 package format. Selection depends on assembly process requirements and inventory management preferences.

Q: Do all substitute parts operate across the same temperature range?

A: Yes. All three parts operate across the identical temperature range of -65°C to 200°C, ensuring thermal compatibility in applications with extended operating temperature requirements.

Q: Which substitute part should be selected for RoHS-compliant applications?

A: The 1N4738A (Lumimax) is RoHS compliant. The 1N4738ATA (onsemi) is RoHS non-compliant. Application requirements for regulatory compliance determine the appropriate selection.