1N5233B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5233B-TP is a 6 V, 500 mW Zener diode manufactured by Micro Commercial Co in a through-hole DO-35 package. This component is classified as obsolete, indicating discontinued production and limited availability from original sources. The part maintains ROHS3 compliance and is suitable for voltage regulation and protection applications requiring a 6 V reference.

Due to its obsolete status, identifying equivalent substitute parts with matching electrical and mechanical specifications is necessary for design continuity and procurement reliability. Substitute parts must maintain identical or compatible electrical parameters to ensure functional equivalence in circuit applications.

Substiute Parts

1N5233B-TP

Micro Commercial CoIn Stock: 11921N5233B-TP Datasheet

Current PartRFQ

1N5233B

Microchip TechnologyIn Stock: 20971N5233B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1N5233B-TP is determined by the following critical parameters:

Primary Electrical Criteria:

• Zener voltage (Vz): 6 V nominal
• Power dissipation rating: 500 mW maximum
• Voltage tolerance: ±5%
• Impedance (Zzt): 7 Ohms maximum
• Reverse leakage current: 5 µA @ 3.5 V

Mechanical Criteria:

• Package type: DO-35 (DO-204AH) through-hole axial configuration
• Mounting compatibility: Through-hole PCB assembly

Compliance Considerations:

• RoHS and REACH certification status
• Product availability and manufacturing status

The substitute part 1N5233B from Microchip Technology matches all primary electrical specifications and maintains the same DO-35 package configuration, establishing functional equivalence for circuit-level substitution.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 1N5233B (Microchip Technology)

The Microchip Technology 1N5233B is the direct functional equivalent for the obsolete 1N5233B-TP. This substitute maintains all critical electrical parameters including 6 V nominal Zener voltage, 500 mW power rating, ±5% tolerance, and 7 Ohms maximum impedance. The DO-35 package configuration ensures mechanical compatibility with existing PCB designs.

The substitute part offers operational advantages:

• Active manufacturing status ensures long-term availability
• Extended operating temperature range (-65°C to 175°C) provides broader environmental compatibility
• Forward voltage specification of 1.5 V @ 200 mA is within acceptable circuit tolerance margins for most applications

Compliance Status: The Microchip Technology 1N5233B is RoHS non-compliant, whereas the original 1N5233B-TP is ROHS3 compliant. Applications requiring ROHS3 certification must evaluate compliance requirements against substitution necessity. Both parts maintain REACH unaffected status and EAR99 export classification.

Packaging Consideration: The substitute part is supplied in bulk packaging, whereas the original part packaging specification is not detailed. Procurement quantities and packaging requirements should be confirmed with supplier specifications.

Frequently Asked Questions (FAQ)

Q: Can the 1N5233B from Microchip Technology directly replace the 1N5233B-TP in existing designs?

A: Yes. The Microchip Technology 1N5233B maintains identical electrical specifications for Zener voltage (6 V), power rating (500 mW), tolerance (±5%), impedance (7 Ohms maximum), and reverse leakage current (5 µA @ 3.5 V). The DO-35 package configuration is mechanically identical, enabling direct PCB substitution without layout modifications.

Q: What is the significance of the forward voltage difference (1.1 V vs. 1.5 V)?

A: The substitute part specifies a maximum forward voltage of 1.5 V @ 200 mA compared to 1.1 V @ 200 mA for the original part. This 0.4 V difference represents a conservative specification margin and does not affect circuit functionality in standard voltage regulation and protection applications. Circuit designs should verify forward voltage performance within their specific operating conditions.

Q: Does the extended operating temperature range of the substitute part affect compatibility?

A: No. The Microchip Technology 1N5233B operates from -65°C to 175°C (junction temperature), which encompasses the original part's -55°C to 150°C range. The extended temperature capability provides additional operational margin and does not introduce compatibility issues.

Q: What is the impact of RoHS compliance differences?

A: The original 1N5233B-TP is ROHS3 compliant, while the Microchip Technology substitute is RoHS non-compliant. Applications subject to RoHS regulatory requirements must evaluate whether substitution is permissible under applicable compliance frameworks. Both parts maintain REACH unaffected status.

Q: Are there packaging differences between the original and substitute parts?

A: The original part packaging specification is not detailed in available data. The substitute part is supplied in bulk packaging. Procurement specifications should confirm packaging format compatibility with assembly and inventory requirements.

Q: What is the base product number relationship?

A: Both the original 1N5233B-TP and the substitute 1N5233B share the base product number 1N5233, indicating they are variants of the same diode design series. The "-TP" suffix on the original part denotes the specific manufacturer (Micro Commercial Co) and packaging configuration.