BZX79-B43,113 Equivalent & Substitute Parts

Part Overview

The BZX79-B43,113 is a through-hole zener diode manufactured by Nexperia USA Inc., rated at 43 V nominal zener voltage with 400 mW maximum power dissipation. This component operates across an extended temperature range of -65°C to 200°C and is packaged in the DO-204AH (DO-35) axial configuration. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or design flexibility needs.

Substiute Parts

BZX79-B43,113

Nexperia USA Inc.In Stock: 11129BZX79-B43,113 Datasheet

Current PartRFQ

BZX79-B43,143

Nexperia USA Inc.In Stock: 6197BZX79-B43,143 Datasheet

Parametric EquivalentRFQ

1N5260B-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 308451N5260B-TAP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BZX79-B43,113 are classified based on the following critical parameters that determine functional interchangeability:

Primary Substitution Criteria:

• Zener voltage nominal rating: 43 V
• Through-hole axial mounting configuration
• DO-204AH (DO-35) package compatibility
• ROHS3 compliance and REACH unaffected status

Parametric Equivalents maintain identical or near-identical electrical specifications across all key performance metrics, including zener voltage tolerance, maximum power rating, impedance, reverse leakage current, and forward voltage characteristics.

Similar Substitutes share the same nominal zener voltage and package type but may exhibit variations in power rating, tolerance, impedance, or temperature operating range. These parts are suitable for applications where the primary circuit function remains unchanged but component-level performance margins differ.

Parameter Comparison

Engineering Selection Recommendations

BZX79-B43,143 (Parametric Equivalent): This part is manufactured by Nexperia USA Inc. and maintains identical electrical specifications to the BZX79-B43,113 across all measured parameters. Both components share the same zener voltage tolerance (±2%), maximum power dissipation (400 mW), impedance rating (150 Ohms), and operating temperature range (-65°C to 200°C). The BZX79-B43,143 is suitable for direct substitution in applications requiring no design modification. Both parts maintain Active product status and ROHS3 compliance.

1N5260B-TAP (Similar Substitute): This Vishay component shares the 43 V nominal zener voltage and DO-204AH (DO-35) axial package configuration. The 1N5260B-TAP provides higher maximum power dissipation (500 mW versus 400 mW) and lower impedance (93 Ohms versus 150 Ohms), offering improved performance margins in power-limited applications. However, the tolerance specification is wider (±5% versus ±2%), and the maximum operating temperature is reduced to 175°C. The part carries AEC-Q101 automotive qualification. Selection of this substitute requires verification that the wider tolerance and reduced temperature range are acceptable for the target application. The 1N5260B-TAP is suitable for applications where enhanced power handling is beneficial and tighter voltage tolerance is not critical.

Frequently Asked Questions (FAQ)

Q: Can BZX79-B43,143 be used as a direct replacement for BZX79-B43,113?

A: Yes. Both parts are manufactured by Nexperia USA Inc. and share identical electrical specifications, including 43 V zener voltage, ±2% tolerance, 400 mW power rating, 150 Ohms impedance, and -65°C to 200°C operating temperature range. The parts are mechanically and electrically interchangeable without circuit modification.

Q: What are the key differences between BZX79-B43,113 and 1N5260B-TAP?

A: Both parts maintain 43 V nominal zener voltage and DO-204AH (DO-35) axial packaging. The 1N5260B-TAP offers higher power dissipation (500 mW versus 400 mW) and lower impedance (93 Ohms versus 150 Ohms). The 1N5260B-TAP has a wider tolerance specification (±5% versus ±2%) and a reduced maximum operating temperature (175°C versus 200°C). The 1N5260B-TAP includes AEC-Q101 automotive qualification.

Q: Is the 1N5260B-TAP suitable for high-temperature applications?

A: The 1N5260B-TAP operates to a maximum temperature of 175°C, which is 25°C lower than the BZX79-B43,113 specification of 200°C. Applications requiring operation at temperatures above 175°C require the BZX79-B43,113 or BZX79-B43,143.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The BZX79-B43,113, BZX79-B43,143, and 1N5260B-TAP are all ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Q: What is the impedance difference between the main part and the 1N5260B-TAP?

A: The BZX79-B43,113 has a maximum impedance of 150 Ohms, while the 1N5260B-TAP has a maximum impedance of 93 Ohms. Lower impedance provides better voltage regulation characteristics in dynamic load conditions.

Q: Can the 1N5260B-TAP be used in applications requiring ±2% tolerance?

A: The 1N5260B-TAP is specified with ±5% tolerance, which is wider than the ±2% tolerance of the BZX79-B43,113. Applications with strict voltage tolerance requirements should use the BZX79-B43,113 or BZX79-B43,143.

Q: Are the forward voltage characteristics identical across all three parts?

A: No. The BZX79-B43,113 and BZX79-B43,143 both specify 900 mV maximum forward voltage at 10 mA. The 1N5260B-TAP specifies 1.1 V maximum forward voltage at 200 mA, which represents a different measurement condition and higher absolute voltage.