1N5995B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5995B-TP is a 6.2 V zener diode rated for 500 mW power dissipation in a DO-35 through-hole package, manufactured by Micro Commercial Co. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design and procurement requirements. Substitute parts must maintain electrical performance across voltage regulation, power handling, and thermal operating ranges while preserving mechanical compatibility with existing circuit board layouts.

Substiute Parts

1N5995B-TP

Micro Commercial CoIn Stock: 9421N5995B-TP Datasheet

Current PartRFQ

1N5995B-TP

Micro Commercial CoIn Stock: 9421N5995B-TP Datasheet

Parametric EquivalentRFQ

BZX79C6V2-T50A

Fairchild SemiconductorIn Stock: 60872BZX79C6V2-T50A Datasheet

Parametric EquivalentRFQ

BZX79C6V2-T50R

Fairchild SemiconductorIn Stock: 810900BZX79C6V2-T50R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1N5995B-TP is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Zener voltage: 6.2 V nominal
• Tolerance: ±5%
• Maximum power dissipation: 500 mW
• Maximum impedance: 10 Ohms
• Reverse leakage current: specification at 4 V
• Forward voltage: 1.5 V maximum at 100 mA
• Operating temperature range: -65°C to 200°C
• Package type: DO-35 through-hole axial configuration

The substitute parts BZX79C6V2-T50A and BZX79C6V2-T50R, both manufactured by Fairchild Semiconductor, satisfy all electrical parameter requirements and maintain identical mechanical compatibility. Both substitutes are classified as active products, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

BZX79C6V2-T50R is the primary substitute for the 1N5995B-TP. This part is manufactured by Fairchild Semiconductor and maintains active product status with extensive inventory availability (810,800 pieces). The BZX79C6V2-T50R satisfies all electrical specifications and mechanical requirements for direct replacement in existing circuit designs. The reverse leakage current specification of 3 µA at 4 V is within acceptable operational margins for voltage regulation applications.

BZX79C6V2-T50A serves as a secondary substitute option, also manufactured by Fairchild Semiconductor with active product status. This variant is available in bulk packaging with 60,809 pieces in stock. Electrical and mechanical parameters are identical to the BZX79C6V2-T50R, with the distinction being packaging configuration and inventory levels.

Both Fairchild substitutes are REACH Unaffected and classified under ECCN EAR99, maintaining regulatory compliance for international distribution. The transition from the obsolete 1N5995B-TP to either active Fairchild equivalent ensures supply chain continuity and supports long-term design reliability.

Frequently Asked Questions (FAQ)

Q: Can BZX79C6V2-T50A and BZX79C6V2-T50R be used interchangeably with the 1N5995B-TP?

A: Both Fairchild parts are electrical and mechanical equivalents to the 1N5995B-TP. They share identical zener voltage (6.2 V), tolerance (±5%), power rating (500 mW), impedance (10 Ohms maximum), forward voltage characteristics, and operating temperature range (-65°C to 200°C). Both are packaged in DO-35 through-hole configuration. The primary difference between the two Fairchild substitutes is packaging type and inventory availability.

Q: What is the difference between BZX79C6V2-T50A and BZX79C6V2-T50R?

A: Both parts are functionally identical with matching electrical specifications. The designation suffix indicates packaging configuration: T50A is supplied in bulk packaging, while T50R uses tape and reel packaging. Selection between these variants depends on procurement volume requirements and assembly process compatibility.

Q: Why is the reverse leakage current specification different between the 1N5995B-TP and the Fairchild substitutes?

A: The 1N5995B-TP specifies 1 µA reverse leakage at 4 V, while BZX79C6V2-T50A and BZX79C6V2-T50R specify 3 µA at the same voltage. This difference reflects manufacturing process variations between Micro Commercial Co and Fairchild Semiconductor. The 3 µA specification remains within acceptable operational limits for standard voltage regulation and protection circuit applications.

Q: Are the Fairchild substitutes RoHS compliant?

A: The BZX79C6V2-T50A and BZX79C6V2-T50R are listed as "Not applicable" for RoHS status. The original 1N5995B-TP is ROHS3 Compliant. For applications requiring RoHS certification, compliance requirements should be verified with the specific application and regulatory framework.

Q: What is the moisture sensitivity level of the substitute parts?

A: The BZX79C6V2-T50A and BZX79C6V2-T50R are classified as MSL 3 (168 Hours), compared to the original 1N5995B-TP at MSL 1 (Unlimited). This indicates the substitute parts require controlled storage conditions with a maximum floor life of 168 hours after moisture exposure. The original part has no moisture sensitivity restrictions.

Q: Can these diodes be used in high-temperature applications?

A: All three parts—1N5995B-TP, BZX79C6V2-T50A, and BZX79C6V2-T50R—support operating temperatures up to 200°C. This rating permits use in elevated temperature environments within the specified range. Circuit design must account for temperature-dependent changes in zener voltage and leakage current characteristics.

Q: Are there any regulatory or export restrictions on these zener diodes?

A: All three parts are classified under ECCN EAR99 and HTSUS 8541.10.0050. Both the original and substitute parts are REACH Unaffected. These classifications indicate standard commercial electronic components with no specific export restrictions under current regulations.