1N4626-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4626-TP is a through-hole zener diode rated at 5.6 V nominal with 500 mW maximum power dissipation in a DO-35 axial package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status and limited ongoing 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

1N4626-TP

Micro Commercial CoIn Stock: 9381N4626-TP Datasheet

Current PartRFQ

1N4626 TR PBFREE

Central Semiconductor CorpIn Stock: 7751N4626 TR PBFREE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N4626-TP is determined by the following critical parameters:

Electrical Matching Criteria:

• Zener voltage (Nom): 5.6 V
• Voltage tolerance: ±5%
• Impedance (Max): 1400 Ohms
• Reverse leakage current: 10 µA @ 4 V

Mechanical Compatibility Criteria:

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

Compliance Requirements:

• RoHS3 compliance
• ECCN classification: EAR99

The substitute part 1N4626 TR PBFREE from Central Semiconductor Corp matches all critical electrical parameters and mechanical specifications. This part maintains identical zener voltage, tolerance, impedance, and reverse leakage characteristics while providing active product status and ROHS3 compliance. The primary difference is power rating (250 mW versus 500 mW) and packaging format (Tape & Reel versus bulk), which must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 1N4626 TR PBFREE

The 1N4626 TR PBFREE from Central Semiconductor Corp is the direct electrical and mechanical equivalent for the obsolete 1N4626-TP. Selection of this substitute is supported by the following factors:

1. Electrical Equivalence: Identical zener voltage (5.6 V), tolerance (±5%), impedance (1400 Ohms), and reverse leakage current (10 µA @ 4 V) ensure functional compatibility in circuit applications.

2. Mechanical Compatibility: Both parts utilize the DO-35 axial through-hole package, enabling direct board-level substitution without layout modifications.

3. Compliance Status: The substitute part maintains ROHS3 compliance and carries REACH Unaffected status, meeting current regulatory requirements.

4. Product Status: The substitute is classified as active, ensuring ongoing availability and supply chain continuity.

5. Power Rating Consideration: The substitute part is rated at 250 mW maximum power dissipation compared to the main part's 500 mW rating. Applications requiring the full 500 mW dissipation capacity must evaluate thermal and circuit design implications.

6. Temperature Range: The substitute provides an extended operating temperature range (-65°C to 200°C) compared to the main part (175°C), offering broader environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 1N4626 TR PBFREE directly replace the 1N4626-TP in existing designs?

A: Yes, for applications where the 250 mW power rating is sufficient. Both parts share identical zener voltage, tolerance, impedance, and reverse leakage specifications. The DO-35 package dimensions are identical, allowing direct board-level substitution. Applications requiring sustained operation at the full 500 mW power level must be re-evaluated for thermal performance.

Q: What is the significance of the power rating difference (500 mW vs. 250 mW)?

A: Power rating defines the maximum continuous power dissipation the diode can handle without exceeding junction temperature limits. The substitute part's 250 mW rating is half that of the main part. Circuit designs operating below 250 mW dissipation experience no functional impact. Designs requiring higher power dissipation must implement additional thermal management or select alternative components with higher power ratings.

Q: Are there packaging differences between the main part and substitute?

A: The main part is supplied in bulk packaging, while the substitute is supplied in Tape & Reel (TR) format. Both use the DO-35 axial through-hole package. Tape & Reel packaging is standard for automated assembly processes and does not affect component electrical or mechanical specifications.

Q: Does the extended temperature range of the substitute provide additional design flexibility?

A: Yes. The substitute's operating range of -65°C to 200°C exceeds the main part's 175°C maximum. This extended range accommodates applications with broader environmental requirements. However, the zener voltage and other electrical characteristics remain identical across the specified temperature ranges.

Q: What compliance certifications apply to the substitute part?

A: The 1N4626 TR PBFREE is ROHS3 compliant and REACH unaffected. These certifications confirm compliance with current environmental and hazardous substance regulations applicable to electronic components.

Q: Is the forward voltage difference (1.1 V vs. 1 V) significant for substitution?

A: The forward voltage specifications apply to forward-biased operation at 200 mA. In typical zener diode applications, the component operates in reverse-bias (zener) mode. The forward voltage difference is not significant for standard zener regulation circuits. Applications utilizing forward-bias operation should evaluate the 0.1 V difference against circuit design tolerances.