BZX79-C75,133 Equivalent & Substitute Parts

Part Overview

The BZX79-C75,133 is a through-hole Zener diode manufactured by Nexperia USA Inc., rated for 75 V nominal Zener voltage with 400 mW maximum power dissipation. The device features ±5% voltage tolerance and operates across a temperature range of -65°C to 200°C. This component is classified as Active and maintains full RoHS3 compliance. Alternative equivalent parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part number becomes unavailable or when tighter tolerance specifications are required.

Substiute Parts

BZX79-C75,133

Nexperia USA Inc.In Stock: 8709BZX79-C75,133 Datasheet

Current PartRFQ

BZX79-B75,133

Nexperia USA Inc.In Stock: 10066BZX79-B75,133 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZX79-C75,133 is determined by electrical and mechanical parameter equivalence. The primary substitution criterion is the maintenance of identical nominal Zener voltage (75 V), maximum power rating (400 mW), reverse leakage characteristics (50 nA @ 52.5 V), forward voltage characteristics (900 mV @ 10 mA), and operating temperature range (-65°C to 200°C). The substitute part must also maintain identical mounting type (Through Hole), package configuration (DO-204AH, DO-35, Axial), and supplier device package designation (ALF2).

The identified substitute part, BZX79-B75,133, meets all these core electrical and mechanical requirements. The key differentiator between the main part and its substitute is the voltage tolerance specification: the main part carries ±5% tolerance, while the substitute carries ±2% tolerance. This tighter tolerance in the substitute part does not prevent substitution; rather, it represents an enhanced specification that maintains backward compatibility with the original design requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the BZX79-C75,133 and BZX79-B75,133 are Active products manufactured by Nexperia USA Inc. and carry identical RoHS3 compliance and REACH Unaffected status. The BZX79-C75,133 is suitable for applications where ±5% Zener voltage tolerance meets design specifications. The BZX79-B75,133 substitute part is suitable for applications requiring tighter voltage tolerance control at ±2%, providing enhanced precision without modification to circuit topology or thermal management design.

Selection between these parts depends solely on the tolerance requirement of the target application. Both parts maintain identical electrical performance across all other parameters, identical package configuration, and identical regulatory compliance. Inventory availability and procurement lead time may also influence part selection without affecting circuit performance.

Frequently Asked Questions (FAQ)

Q: Can BZX79-B75,133 be used as a direct replacement for BZX79-C75,133?

A: Yes. The BZX79-B75,133 is a direct substitute. All electrical parameters, power ratings, temperature range, and package specifications are identical. The substitute carries tighter voltage tolerance (±2% versus ±5%), which represents an enhanced specification compatible with the original design.

Q: What is the primary difference between these two part numbers?

A: The voltage tolerance specification differs. BZX79-C75,133 carries ±5% tolerance, while BZX79-B75,133 carries ±2% tolerance. All other electrical and mechanical characteristics are identical.

Q: Are the package configurations identical?

A: Yes. Both parts use the DO-204AH, DO-35 Axial package with ALF2 supplier device package designation. Through-hole mounting type is identical for both parts.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 Compliant, REACH Unaffected, and carry identical Moisture Sensitivity Level (MSL) rating of 1 (Unlimited).

Q: Which part should be selected for a new design?

A: Selection depends on the tolerance requirement of the circuit design. If ±5% tolerance is acceptable, either part is suitable. If tighter tolerance control is required, BZX79-B75,133 is the appropriate selection.

Q: Are there any thermal or electrical performance differences?

A: No. Both parts operate across the identical temperature range (-65°C to 200°C), maintain identical maximum power dissipation (400 mW), and exhibit identical reverse leakage and forward voltage characteristics.