1N5230B Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5230B is a through-hole zener diode rated at 4.7 V nominal with 500 mW power dissipation capability, packaged in the DO-35 axial configuration. This component is classified as obsolete by the original manufacturer (SMC Diode Solutions), necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability. The substitute part 1N5230B TR PBFREE, manufactured by Central Semiconductor Corp, provides functional equivalence with active product status and enhanced compliance certifications.

Substiute Parts

1N5230B

SMC Diode SolutionsIn Stock: 13161N5230B Datasheet

Current PartRFQ

1N5230B TR PBFREE

Central Semiconductor CorpIn Stock: 95081N5230B TR PBFREE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N5230B is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Zener voltage (nominal): 4.7 V
• Voltage tolerance: ±5%
• Maximum power dissipation: 500 mW
• Maximum impedance: 19 Ohms
• Reverse leakage current: 5 µA
• Forward voltage: 1.1 V @ 200 mA
• Package type: DO-35 axial through-hole configuration
• Moisture sensitivity: MSL 1 (Unlimited)

The substitute part 1N5230B TR PBFREE meets all electrical specifications and maintains mechanical compatibility with the original 1N5230B. The primary distinction is product status: the original part is obsolete, while the substitute is active. The substitute also provides RoHS3 compliance and an extended operating temperature range (−65°C to 200°C versus the original specification of 200°C maximum).

Parameter Comparison

Engineering Selection Recommendations

The 1N5230B TR PBFREE is the direct functional equivalent for the obsolete 1N5230B. Selection of this substitute is based on the following engineering factors:

Product Status: The original 1N5230B is obsolete. The substitute maintains active product status, ensuring long-term supply chain viability and manufacturer support.

Electrical Equivalence: All critical electrical parameters—zener voltage, tolerance, power rating, impedance, and leakage current—are identical between the original and substitute parts. Forward voltage characteristics are also matched.

Mechanical Compatibility: Both parts use the DO-35 axial through-hole package, ensuring direct physical compatibility in existing PCB designs without layout modifications.

Compliance and Certifications: The substitute part carries RoHS3 compliance certification, meeting current regulatory requirements. Both parts maintain REACH Unaffected status and identical ECCN and HTSUS classifications.

Operating Temperature: The substitute provides an extended operating temperature range (−65°C to 200°C) compared to the original specification, offering enhanced performance margin in temperature-sensitive applications.

Packaging Format: The substitute is supplied in Cut Tape (CT) format, which is standard for active production components and supports automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 1N5230B TR PBFREE be used as a direct replacement for the 1N5230B in existing designs?

A: Yes. The substitute part meets all electrical and mechanical specifications of the original. Both components share identical zener voltage (4.7 V), power rating (500 mW), impedance (19 Ohms), and DO-35 axial package configuration. No circuit modifications or PCB layout changes are required.

Q: What is the primary reason for substitution?

A: The original 1N5230B is classified as obsolete by the manufacturer. The 1N5230B TR PBFREE is an active equivalent that ensures continued component availability and manufacturer support.

Q: Are there differences in operating temperature specifications?

A: The substitute part specifies an operating temperature range of −65°C to 200°C, while the original lists 200°C as the maximum. This represents an extended lower temperature capability in the substitute, providing additional operational margin.

Q: Does the substitute part meet current regulatory compliance standards?

A: Yes. The 1N5230B TR PBFREE carries RoHS3 compliance certification. Both the original and substitute maintain REACH Unaffected status and identical trade classification codes (ECCN: EAR99; HTSUS: 8541.10.0050).

Q: What is the difference between the packaging formats?

A: The original 1N5230B is listed with unspecified packaging. The substitute is supplied in Cut Tape (CT) format, which is standard for active production components and supports high-volume automated assembly operations.

Q: Are the electrical characteristics identical?

A: All specified electrical parameters are equivalent: zener voltage (4.7 V ±5%), power dissipation (500 mW), maximum impedance (19 Ohms), reverse leakage current (5 µA), and forward voltage (1.1 V @ 200 mA). Minor variations in reverse leakage test voltage (1.9 V vs. 2 V) do not affect functional equivalence.

Q: Is the moisture sensitivity level the same?

A: Yes. Both parts carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity constraints for storage or handling.