1N5233 Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5233 is a through-hole zener diode rated at 6 V nominal voltage with 500 mW maximum power dissipation in a DO-35 axial package. Manufactured by SMC Diode Solutions, this component is classified as obsolete. Due to its obsolete status, locating direct inventory from the original manufacturer may present supply chain challenges. Identifying equivalent and substitute parts with matching electrical and mechanical specifications ensures design continuity and procurement flexibility.

Substiute Parts

1N5233

SMC Diode SolutionsIn Stock: 12621N5233 Datasheet

Current PartRFQ

1N5233B TR PBFREE

Central Semiconductor CorpIn Stock: 12321N5233B TR PBFREE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N5233 is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Zener voltage: 6 V nominal
• Maximum power dissipation: 500 mW
• Impedance (maximum): 7 Ohms
• Reverse leakage current: 5 µA @ 3.5 V
• Forward voltage: 1.1 V @ 200 mA

Mechanical & Package Specifications:

• Mounting type: Through Hole
• Package designation: DO-35 (DO-204AH, Axial)
• Moisture sensitivity: MSL 1 (Unlimited)

Compliance & Environmental:

• REACH Status: REACH Unaffected
• ECCN: EAR99
• HTSUS: 8541.10.0050

The substitute part 1N5233B TR PBFREE meets all electrical parameters and maintains identical package specifications. The primary distinction is product status (active versus obsolete) and the addition of voltage tolerance specification (±5%) in the substitute part.

Parameter Comparison

Engineering Selection Recommendations

The 1N5233B TR PBFREE from Central Semiconductor Corp is a direct functional equivalent to the obsolete 1N5233. Selection of this substitute is supported by the following factors:

Product Status & Availability: The 1N5233B TR PBFREE maintains active product status, ensuring ongoing availability and supply chain reliability compared to the obsolete 1N5233.

Electrical Equivalence: All critical electrical parameters match exactly: 6 V zener voltage, 500 mW power rating, 7 Ohms maximum impedance, and identical reverse leakage and forward voltage characteristics. The addition of ±5% voltage tolerance in the substitute part provides explicit specification of acceptable voltage variation.

Compliance & Environmental Standards: Both parts maintain REACH Unaffected status and identical ECCN/HTSUS classifications. The substitute part carries ROHS3 compliance certification, meeting modern regulatory requirements for lead-free manufacturing.

Package & Mounting Compatibility: Identical DO-35 axial through-hole package specifications ensure mechanical and electrical compatibility in existing PCB designs without layout modifications.

Operating Temperature Range: The substitute part specifies an extended operating temperature range (-65°C ~ 200°C) compared to the main part specification (200°C maximum). This provides additional operational margin for temperature-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the 1N5233B TR PBFREE be used as a direct replacement for the 1N5233?

A: Yes. Both parts share identical electrical specifications (6 V zener voltage, 500 mW power rating, 7 Ohms impedance) and package configuration (DO-35 axial through-hole). The substitute part is electrically and mechanically compatible for direct substitution.

Q: What is the difference between the packaging formats listed?

A: The original 1N5233 is supplied in bulk packaging. The 1N5233B TR PBFREE is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes. Both formats contain identical components; packaging format selection depends on assembly methodology and procurement volume requirements.

Q: Does the ±5% voltage tolerance specification on the substitute part affect compatibility?

A: No. The ±5% tolerance on the 1N5233B TR PBFREE explicitly defines the acceptable voltage variation range around the 6 V nominal specification. This tolerance specification does not alter the component's functional equivalence; it provides clarity on voltage accuracy. Applications designed for the original 1N5233 operate within this tolerance range.

Q: Are there compliance differences between the two parts?

A: The 1N5233B TR PBFREE carries ROHS3 compliance certification, indicating lead-free manufacturing. The original 1N5233 does not specify RoHS status. Both parts maintain identical REACH Unaffected status and EAR99 ECCN classification. For applications requiring RoHS compliance, the substitute part meets this requirement.

Q: What is the significance of the extended operating temperature range in the substitute part?

A: The 1N5233B TR PBFREE specifies -65°C ~ 200°C operating temperature, compared to 200°C maximum for the original part. This extended lower temperature limit provides additional operational margin for applications in cold environments. The upper temperature limit remains identical.

Q: Can the 1N5233B TR PBFREE be used in existing designs without PCB modifications?

A: Yes. The identical DO-35 axial through-hole package ensures pin-for-pin compatibility. No PCB layout or design modifications are required for substitution.

Q: What does "PBFREE" designation indicate?

A: PBFREE indicates lead-free (Pb-free) manufacturing, confirming compliance with RoHS directives that restrict hazardous substances in electronic components.