1N5232B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5232B-TP is a 5.6 V zener diode rated for 500 mW power dissipation in a DO-35 through-hole package, manufactured by Micro Commercial Co. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. The 1N5232B-TP maintains ±5% voltage tolerance and is suitable for voltage regulation and protection applications across industrial and commercial temperature ranges.

Substiute Parts

1N5232B-TP

Micro Commercial CoIn Stock: 11171N5232B-TP Datasheet

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1N5232B

Microchip TechnologyIn Stock: 146021N5232B Datasheet

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1N5232B

Microchip TechnologyIn Stock: 146021N5232B Datasheet

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1N5232BTR

Fairchild SemiconductorIn Stock: 49091N5232BTR Datasheet

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BZX79C5V6

Taiwan Semiconductor CorporationIn Stock: 34447BZX79C5V6 Datasheet

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BZX79C5V6TR

Fairchild SemiconductorIn Stock: 65900BZX79C5V6TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N5232B-TP is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage: 5.6 V nominal
• Voltage tolerance: ±5%
• Power rating: 500 mW minimum
• Package type: DO-35 (DO-204AH) through-hole axial configuration
• Mounting type: Through hole

Secondary Compatibility Factors:

• Impedance (Zzt): Maximum 11 Ohms for direct replacement; higher impedance values (40 Ohms) indicate alternative design characteristics
• Reverse leakage current: 5 µA @ 3 V for primary equivalents; 1 µA @ 2 V for alternative designs
• Forward voltage: 1.1 V @ 200 mA for primary equivalents; variations acceptable within circuit design margins
• Operating temperature range: Minimum -55°C to 150°C; extended ranges provide additional operational flexibility

Substitute parts are grouped into two categories: Direct Equivalents (matching impedance and leakage specifications) and Functional Alternatives (meeting core voltage and power requirements with different impedance characteristics).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Preferred for Pin-Compatible Replacement):

The 1N5232B (Microchip Technology) and 1N5232BTR (Fairchild Semiconductor) are direct functional equivalents to the 1N5232B-TP. Both parts maintain identical zener voltage (5.6 V), tolerance (±5%), power rating (500 mW), and impedance (11 Ohms). Both are active products with extended operating temperature ranges (-65°C to 175°C or -65°C to 200°C) compared to the obsolete original. The 1N5232BTR offers the widest temperature range (-65°C to 200°C) and is suitable for applications requiring maximum thermal margin.

Functional Alternatives (Different Impedance Characteristics):

The BZX79C5V6 (Taiwan Semiconductor Corporation) and BZX79C5V6TR (Fairchild Semiconductor) maintain the core electrical specifications (5.6 V, ±5%, 500 mW) but feature higher impedance (40 Ohms) and lower reverse leakage current (1 µA @ 2 V). These parts are suitable for applications where impedance variation is acceptable and lower leakage current is beneficial. The BZX79C5V6TR provides the extended temperature range (-65°C to 200°C).

Compliance Considerations:

The 1N5232B-TP is RoHS3 compliant. The Microchip 1N5232B is RoHS non-compliant. The BZX79C5V6 is RoHS3 compliant. All substitute parts are REACH unaffected and classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can the 1N5232B from Microchip Technology directly replace the obsolete 1N5232B-TP?

A: Yes. The Microchip 1N5232B is a direct functional equivalent with identical zener voltage (5.6 V), tolerance (±5%), power rating (500 mW), and impedance (11 Ohms). Both use the DO-35 through-hole package. The Microchip part is active and available in higher inventory quantities.

Q: What is the difference between the 1N5232B and BZX79C5V6 substitutes?

A: Both maintain 5.6 V zener voltage and 500 mW power rating. The primary difference is impedance: the 1N5232B has 11 Ohms maximum impedance, while the BZX79C5V6 has 40 Ohms maximum impedance. The BZX79C5V6 also features lower reverse leakage current (1 µA @ 2 V versus 5 µA @ 3 V). Selection depends on circuit requirements for impedance and leakage characteristics.

Q: Are all substitute parts available in the same DO-35 package?

A: Yes. All listed substitute parts use the DO-35 (DO-204AH) through-hole axial package configuration, ensuring mechanical and electrical compatibility with the original 1N5232B-TP footprint.

Q: What is the temperature range difference between the original and substitute parts?

A: The obsolete 1N5232B-TP operates from -55°C to 150°C. All active substitute parts extend this range to at least -65°C to 175°C, with the 1N5232BTR and BZX79C5V6TR offering -65°C to 200°C operation. Extended temperature ranges provide additional design margin for demanding applications.

Q: Does RoHS compliance status affect substitution decisions?

A: RoHS compliance is a regulatory consideration dependent on application and market requirements. The 1N5232B-TP and BZX79C5V6 are RoHS3 compliant. The Microchip 1N5232B is RoHS non-compliant. Applications subject to RoHS requirements should select compliant alternatives.

Q: Can the BZX79C5V6 be used in all applications where the 1N5232B-TP was used?

A: The BZX79C5V6 is functionally compatible for voltage regulation and protection applications. The higher impedance (40 Ohms versus 11 Ohms) and lower leakage current may affect circuit performance in applications with tight impedance or leakage specifications. Circuit analysis is required to confirm suitability for specific designs.