BZX55C75-TAP Equivalent & Substitute Parts

Part Overview

The BZX55C75-TAP is a Zener diode rated at 75 V nominal voltage with 500 mW maximum power dissipation in a DO-35 through-hole package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as Active and carries automotive-grade qualification under AEC-Q101. The device operates across a temperature range of -65°C to 175°C and complies with ROHS3 and REACH standards.

Equivalent and substitute parts are identified when components share identical or compatible electrical specifications, mechanical packaging, and regulatory certifications. Substitutes enable design flexibility, support supply chain continuity, and provide alternatives when primary components face inventory constraints or obsolescence.

Substiute Parts

BZX55C75-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 8848BZX55C75-TAP Datasheet

Current PartRFQ

BZX55B75-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 20500BZX55B75-TAP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZX55C75-TAP is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Zener voltage: 75 V nominal
• Maximum power dissipation: 500 mW
• Impedance: 250 Ohms maximum
• Reverse leakage current: 100 nA @ 56 V
• Forward voltage: 1.5 V maximum @ 200 mA

Mechanical & Packaging:

• Package type: DO-204AH (DO-35) axial through-hole
• Mounting configuration: Through-hole

Regulatory & Compliance:

• Automotive grade qualification: AEC-Q101
• RoHS status: ROHS3 Compliant
• REACH status: REACH Unaffected
• Operating temperature range: -65°C to 175°C

The BZX55B75-TAP qualifies as a parametric equivalent because it maintains identical electrical performance across all critical specifications while offering improved tolerance characteristics. Both components are manufactured by the same supplier, carry identical automotive qualifications, and are packaged in the same DO-35 configuration.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: BZX55C75-TAP

The BZX55C75-TAP is the specified component with ±5% tolerance and active product status. This part is suitable for applications where the ±5% tolerance specification meets circuit requirements and where the primary part is available.

Substitute Part: BZX55B75-TAP

The BZX55B75-TAP is a direct parametric equivalent with superior tolerance characteristics (±2% versus ±5%). Both components are manufactured by Vishay General Semiconductor - Diodes Division and carry identical AEC-Q101 automotive qualification. Both are ROHS3 compliant and REACH unaffected. The substitute maintains all electrical specifications, thermal operating range, and mechanical packaging requirements.

The BZX55B75-TAP is suitable for direct substitution in applications where tighter tolerance performance is acceptable or beneficial. No circuit redesign or re-qualification is required due to the identical electrical performance and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can the BZX55B75-TAP replace the BZX55C75-TAP in existing designs?

A: Yes. The BZX55B75-TAP is a direct parametric equivalent with identical electrical specifications, power rating, impedance, and thermal operating range. Both components are packaged in DO-35 through-hole configuration and carry AEC-Q101 automotive qualification. The substitute offers improved tolerance (±2% versus ±5%), which is compatible with the original specification.

Q: What is the difference between these two parts?

A: The primary difference is tolerance specification. The BZX55C75-TAP has ±5% tolerance, while the BZX55B75-TAP has ±2% tolerance. All other electrical parameters, including zener voltage, power dissipation, impedance, leakage current, and forward voltage, are identical. Both parts are manufactured by the same supplier and carry identical certifications.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the BZX55C75-TAP and BZX55B75-TAP are automotive-grade components qualified to AEC-Q101 standard. Both operate across the -65°C to 175°C temperature range and comply with ROHS3 and REACH requirements.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both components use the DO-35 axial through-hole package with identical mechanical dimensions and pin configuration. They can be used interchangeably on the same printed circuit board without modification to footprint or assembly procedures.

Q: Which part should I select for new designs?

A: Selection depends on tolerance requirements. If the circuit design specifies ±5% tolerance, either part is acceptable. If tighter tolerance performance is required or preferred, the BZX55B75-TAP with ±2% tolerance is the appropriate choice. Both parts are active products with established supply availability.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical compliance status: ROHS3 compliant, REACH unaffected, and AEC-Q101 automotive qualified. No additional qualification or testing is required when substituting between these parts.