BZX79-C68,133 Equivalent & Substitute Parts

Part Overview

The BZX79-C68,133 is a Zener diode rated at 68 V nominal voltage with 400 mW maximum power dissipation, manufactured by Nexperia USA Inc. This through-hole component operates across a temperature range of -65°C to 200°C and is packaged in DO-204AH (DO-35) axial configuration. The part is currently Active in product status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, packaging format preferences, or tolerance specifications.

Substiute Parts

BZX79-C68,133

Nexperia USA Inc.In Stock: 862BZX79-C68,133 Datasheet

Current PartRFQ

BZX79-C68,113

Nexperia USA Inc.In Stock: 11173BZX79-C68,113 Datasheet

DirectRFQ

BZX79-B68,143

Nexperia USA Inc.In Stock: 6204BZX79-B68,143 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZX79-C68,133 is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Equivalence Parameters:

• Voltage - Zener (Nom): 68 V (exact match required)
• Power - Max: 400 mW (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: DO-204AH, DO-35, Axial (exact match required)
• Operating Temperature Range: -65°C to 200°C (exact match required)
• Impedance (Max): 240 Ohms (exact match required)
• Current - Reverse Leakage @ Vr: 50 nA @ 47.6 V (exact match required)
• Voltage - Forward (Vf) (Max) @ If: 900 mV @ 10 mA (exact match required)

Allowable Variation Parameters:

• Tolerance: ±5% (main part) to ±2% (substitute acceptable; tighter tolerance is compatible)
• Packaging Format: Tape & Box (TB) to Cut Tape (CT) (both are acceptable supply formats for the same component)

Substitute parts maintain identical electrical performance and mechanical form factor while differing only in packaging format or tolerance specification. All substitute parts are manufactured by Nexperia USA Inc. and carry Active product status with ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

BZX79-C68,113 Selection Criteria: This substitute is electrically and mechanically identical to the BZX79-C68,133. The only difference is the packaging format: Cut Tape (CT) versus Tape & Box (TB). Selection of BZX79-C68,113 is appropriate when Cut Tape packaging is preferred for automated assembly processes or when Tape & Box inventory is unavailable. Both parts carry Active product status, ROHS3 compliance, and identical electrical specifications.

BZX79-B68,143 Selection Criteria: This substitute provides tighter tolerance specification (±2% versus ±5%) while maintaining all other electrical and mechanical parameters. The BZX79-B68,143 is appropriate for applications requiring improved voltage accuracy. This part is supplied in Cut Tape (CT) format. All regulatory compliance, product status, and core electrical performance remain equivalent to the main part.

All three parts are manufactured by Nexperia USA Inc., carry Active product status, and meet ROHS3 and REACH compliance requirements. Selection between these parts depends on packaging format availability and tolerance requirements specific to the application circuit.

Frequently Asked Questions (FAQ)

Q: Can BZX79-C68,113 be used as a direct replacement for BZX79-C68,133?

A: Yes. The BZX79-C68,113 is electrically and mechanically identical to the BZX79-C68,133. The only difference is the packaging format (Cut Tape versus Tape & Box). Both parts have identical electrical specifications, operating temperature range, and compliance certifications. The substitution is valid for any application using the BZX79-C68,133.

Q: What is the difference between BZX79-C68,133 and BZX79-B68,143?

A: The primary difference is the tolerance specification. The BZX79-C68,133 has ±5% tolerance, while the BZX79-B68,143 has ±2% tolerance. All other electrical parameters, including nominal voltage (68 V), maximum power (400 mW), impedance, leakage current, and forward voltage, are identical. The BZX79-B68,143 provides tighter voltage accuracy for applications requiring improved precision.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the same package type (DO-204AH, DO-35, Axial) and mounting configuration (Through Hole). They are mechanically and electrically interchangeable in terms of PCB layout and circuit function.

Q: What does the packaging format difference (TB versus CT) mean for component selection?

A: Tape & Box (TB) packaging is typically used for manual assembly or smaller quantity orders, while Cut Tape (CT) is optimized for automated pick-and-place assembly. The electrical and mechanical properties of the component are identical; the difference is only in how the parts are supplied and handled during assembly.

Q: Can BZX79-B68,143 be used in place of BZX79-C68,133 if tighter tolerance is not required?

A: Yes. The BZX79-B68,143 can be used in any application designed for the BZX79-C68,133. The ±2% tolerance of the BZX79-B68,143 is a tighter specification than the ±5% tolerance of the BZX79-C68,133, making it fully compatible. All other electrical and mechanical parameters are identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three parts (BZX79-C68,133, BZX79-C68,113, and BZX79-B68,143) are ROHS3 compliant and REACH unaffected. They meet all applicable environmental and regulatory requirements.

Q: What is the operating temperature range for these Zener diodes?

A: All three parts operate across the temperature range of -65°C to 200°C. This specification is identical across all substitute parts.