1N5246 Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5246 is a through-hole zener diode rated at 16 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 and limited availability from the original manufacturer, identifying active equivalent parts is necessary to maintain design continuity and ensure supply chain reliability for applications requiring 16 V zener regulation.

Substiute Parts

1N5246

SMC Diode SolutionsIn Stock: 554031N5246 Datasheet

Current PartRFQ

1N5246B TR PBFREE

Central Semiconductor CorpIn Stock: 104621N5246B TR PBFREE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N5246 is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Zener voltage: 16 V nominal
• Maximum power dissipation: 500 mW
• Reverse leakage current: 100 nA @ 12 V
• Forward voltage: 1.1 V @ 200 mA
• Impedance (Max): 17 Ohms
• Package type: DO-35 axial through-hole configuration
• Moisture sensitivity: MSL 1 (Unlimited)

The 1N5246B TR PBFREE, manufactured by Central Semiconductor Corp, meets all electrical specifications and mechanical requirements of the original part. The primary distinction is that the substitute part carries an active product status and includes RoHS3 compliance certification, making it suitable for applications with modern regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

The 1N5246B TR PBFREE from Central Semiconductor Corp is a direct electrical and mechanical equivalent to the obsolete 1N5246. Selection of this substitute part is based on the following factors:

Product Status: The substitute part maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Regulatory Compliance: The 1N5246B TR PBFREE carries RoHS3 compliance certification, meeting modern environmental and material restriction requirements. Both parts maintain REACH Unaffected status and identical ECCN and HTSUS classifications.

Electrical Equivalence: All critical electrical parameters—zener voltage, power rating, impedance, reverse leakage current, and forward voltage—are identical between the original and substitute parts.

Mechanical Compatibility: Both parts use identical DO-35 axial through-hole packaging, enabling direct board-level substitution without layout modifications.

Tolerance Specification: The substitute part specifies ±5% zener voltage tolerance, providing defined performance boundaries for circuit design calculations.

Frequently Asked Questions (FAQ)

Q: Can the 1N5246B TR PBFREE be used as a direct replacement for the 1N5246?

A: Yes. The 1N5246B TR PBFREE meets all electrical specifications and mechanical requirements of the 1N5246. Both parts share identical zener voltage (16 V), power rating (500 mW), impedance (17 Ohms), reverse leakage current (100 nA @ 12 V), forward voltage (1.1 V @ 200 mA), and DO-35 axial package configuration.

Q: What is the primary reason to substitute the 1N5246?

A: The 1N5246 is classified as obsolete. The 1N5246B TR PBFREE is an active product with confirmed ongoing manufacturing and availability, making it the appropriate choice for new designs and component replenishment.

Q: Are there packaging differences between these parts?

A: Both parts use the DO-35 axial through-hole package. The substitute part is supplied in Cut Tape (CT) format, which is standard for active production components. This does not affect electrical performance or board-level installation.

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

A: The ±5% tolerance on the 1N5246B TR PBFREE defines the acceptable zener voltage range (15.2 V to 16.8 V). This tolerance specification does not prevent substitution; it establishes the performance boundaries for circuit design. Circuits designed for the original 1N5246 operate within this tolerance range.

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

A: The substitute part includes RoHS3 compliance certification, which the original part does not specify. Both parts maintain identical REACH Unaffected status, ECCN classification (EAR99), and HTSUS code (8541.10.0050). The RoHS3 compliance of the substitute part meets modern regulatory requirements for electronic components.

Q: What is the operating temperature range for each part?

A: The original 1N5246 does not specify an operating temperature range in the provided data. The 1N5246B TR PBFREE operates across −65°C to 200°C, providing defined thermal performance boundaries for circuit design.

Q: Is the moisture sensitivity level the same for both parts?

A: Yes. Both the 1N5246 and 1N5246B TR PBFREE carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions for storage or handling.