1N4745A_S00Z Equivalent & Substitute Parts

Part Overview

The 1N4745A_S00Z is a Zener diode rated for 16 V nominal voltage and 1 W maximum power dissipation in a through-hole DO-41 package. This component is manufactured by onsemi and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts with matching electrical and mechanical specifications is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

1N4745A_S00Z

onsemiIn Stock: 8881N4745A_S00Z Datasheet

Current PartRFQ

1N4745A

Lumimax Optoelectronic TechnologyIn Stock: 2803011N4745A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1N4745A_S00Z are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Zener voltage (Nom): 16 V
• Power rating (Max): 1 W
• Impedance (Max): 16 Ohms
• Reverse leakage current: 5 µA @ 12.2 V
• Operating temperature range: -65°C ~ 200°C
• Mounting type: Through Hole
• Package type: DO-41 or equivalent axial configuration

Parts meeting all these specifications are classified as direct electrical and mechanical equivalents. Substitute parts must maintain identical performance characteristics within the specified tolerance band (±5%) to ensure functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The 1N4745A manufactured by Lumimax Optoelectronic Technology is a direct substitute for the obsolete 1N4745A_S00Z. Both parts share identical electrical specifications across all critical parameters: 16 V nominal Zener voltage, 1 W power rating, 16 Ohms maximum impedance, and 5 µA reverse leakage current at 12.2 V. Both components operate across the same temperature range (-65°C ~ 200°C) and utilize the same through-hole DO-41 package configuration.

The Lumimax 1N4745A offers the advantage of active product status with RoHS compliance certification, ensuring long-term availability and regulatory alignment. Both parts maintain REACH Unaffected status and share identical ECCN and HTSUS classifications. The electrical and mechanical compatibility between these components permits direct substitution without circuit redesign or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the Lumimax 1N4745A directly replace the onsemi 1N4745A_S00Z?

A: Yes. Both components meet identical electrical specifications for Zener voltage (16 V), power rating (1 W), impedance (16 Ohms), and reverse leakage current (5 µA @ 12.2 V). Operating temperature ranges and through-hole DO-41 package configurations are identical, permitting direct substitution.

Q: What is the significance of the product status difference (Obsolete vs. Active)?

A: The onsemi 1N4745A_S00Z is classified as obsolete, indicating discontinued manufacturing and limited future availability. The Lumimax 1N4745A maintains active status, ensuring continued supply and manufacturing support for new production and replacement applications.

Q: Are there package compatibility considerations between DO-41 and DO-41G?

A: Both designations reference the same DO-41 axial through-hole package configuration. The "G" suffix in DO-41G indicates a specific supplier variant but does not alter mechanical or electrical compatibility. Pin spacing, lead diameter, and mounting characteristics remain consistent.

Q: Does RoHS compliance affect substitution eligibility?

A: RoHS compliance is a regulatory certification indicating lead-free manufacturing. The Lumimax 1N4745A carries RoHS Compliant status while the onsemi part does not specify this certification. For applications requiring RoHS compliance, the Lumimax substitute satisfies this requirement. For applications without RoHS mandates, both parts remain functionally equivalent.

Q: Are there any electrical performance differences between these parts?

A: No. All specified electrical parameters—Zener voltage, tolerance, power rating, impedance, reverse leakage current, and operating temperature range—are identical between the two components. Both parts deliver equivalent circuit performance.