1N5230 Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5230 is a through-hole zener diode rated at 4.7 V nominal with 500 mW power dissipation in a DO-35 axial package. Manufactured by SMC Diode Solutions, this component is classified as obsolete. Due to its obsolete status and limited availability from the original manufacturer, identifying equivalent substitute parts with matching electrical and mechanical specifications is necessary for design continuity and procurement planning.

Substiute Parts

1N5230

SMC Diode SolutionsIn Stock: 28441N5230 Datasheet

Current PartRFQ

1N5230B TR PBFREE

Central Semiconductor CorpIn Stock: 95081N5230B TR PBFREE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N5230 is determined by the following critical parameters:

Electrical Specifications:

• Zener voltage: 4.7 V nominal
• Power rating: 500 mW maximum
• Impedance: 19 Ohms maximum
• Reverse leakage current: 5 µA
• Forward voltage: 1.1 V maximum at 200 mA

Mechanical Specifications:

• Package type: DO-35 axial through-hole configuration
• Mounting: Through-hole assembly

Compliance & Status:

• Product status (active vs. obsolete)
• RoHS and REACH compliance certifications

The substitute part 1N5230B TR PBFREE meets all electrical parameters within specified tolerances and maintains identical mechanical packaging. The substitute is manufactured by Central Semiconductor Corp and carries active product status with RoHS3 compliance, providing improved long-term availability and regulatory alignment compared to the obsolete original part.

Parameter Comparison

Engineering Selection Recommendations

The 1N5230B TR PBFREE manufactured by Central Semiconductor Corp is the direct functional equivalent for the obsolete 1N5230. Selection of this substitute is based on the following factors:

Electrical Compatibility: All critical electrical parameters match the original specification: 4.7 V zener voltage, 500 mW power rating, 19 Ohms maximum impedance, and identical forward voltage characteristics. The substitute includes a defined tolerance of ±5%, providing improved specification clarity.

Mechanical Compatibility: Both parts utilize identical DO-35 axial through-hole packaging, ensuring direct physical and electrical compatibility in existing PCB layouts without modification.

Product Status & Compliance: The substitute carries active product status, ensuring continued availability and supply chain stability. RoHS3 compliance certification and REACH unaffected status align with current regulatory requirements and environmental standards.

Temperature Operating Range: The substitute provides an extended operating temperature range of -65°C to 200°C compared to the original specification, offering broader application flexibility while maintaining the upper temperature limit of 200°C.

Frequently Asked Questions (FAQ)

Q: Can the 1N5230B TR PBFREE be used as a direct replacement for the 1N5230?

A: Yes. The 1N5230B TR PBFREE is electrically and mechanically equivalent. Both parts share identical zener voltage (4.7 V), power rating (500 mW), impedance (19 Ohms maximum), and DO-35 axial through-hole packaging. No circuit modifications or PCB layout changes are required.

Q: What is the significance of the "TR PBFREE" designation in the substitute part number?

A: The "TR" indicates tape reel packaging format for automated assembly. "PBFREE" denotes lead-free (RoHS compliant) construction. These designations reflect modern manufacturing standards and do not affect electrical performance or compatibility with the original part.

Q: Are there differences in tolerance specifications between the original and substitute parts?

A: The original 1N5230 does not specify a tolerance value. The substitute 1N5230B TR PBFREE specifies ±5% tolerance on the zener voltage. This defined tolerance provides improved specification clarity and does not impact substitution compatibility.

Q: Does the extended temperature range of the substitute part affect its use in existing designs?

A: No. The substitute's extended lower temperature limit (-65°C) and maintained upper limit (200°C) provide equal or greater operational capability. Existing designs operating within the original temperature specification remain fully compatible.

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

A: Both parts use identical DO-35 axial through-hole packaging. The substitute is supplied in cut tape (CT) format for automated assembly, while the original packaging format is not specified. Physical dimensions and electrical connections are identical.

Q: Why is the original 1N5230 classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by the original supplier (SMC Diode Solutions). The 1N5230B TR PBFREE maintains active production status, ensuring long-term availability and supply chain continuity.

Q: Are compliance certifications equivalent between the two parts?

A: Both parts maintain REACH unaffected status. The substitute includes RoHS3 compliance certification, which exceeds the regulatory requirements of the original part and aligns with current environmental and safety standards.