BZX79-C68,143 Equivalent & Substitute Parts

Part Overview

The BZX79-C68,143 is a Zener diode manufactured by Nexperia USA Inc., rated for 68 V nominal Zener voltage with 400 mW maximum power dissipation. 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 maintains Active product status and carries ROHS3 compliance certification.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set, enabling component interchangeability in circuit applications where the primary part becomes unavailable or when alternative packaging formats are required.

Substiute Parts

BZX79-C68,143

Nexperia USA Inc.In Stock: 20291BZX79-C68,143 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 eligibility for the BZX79-C68,143 is determined by the following criteria:

Electrical Parameters (Must Match):

• Zener voltage: 68 V nominal
• Maximum power dissipation: 400 mW
• Impedance (Max): 240 Ohms
• Reverse leakage current: 50 nA @ 47.6 V
• Forward voltage: 900 mV @ 10 mA
• Operating temperature range: -65°C to 200°C

Mechanical Parameters (Must Match):

• Mounting type: Through Hole
• Package configuration: DO-204AH, DO-35, Axial

Tolerance Consideration: Zener voltage tolerance may vary (±2% or ±5%) while maintaining functional equivalence. Tighter tolerance specifications (±2%) represent enhanced precision variants suitable for applications requiring stricter voltage regulation.

Packaging Format: Substitute parts may differ in supplier packaging (Tape & Box versus Cut Tape) without affecting electrical or mechanical compatibility. Packaging format selection depends on procurement and assembly workflow requirements.

Parameter Comparison

Engineering Selection Recommendations

BZX79-C68,113 (Direct Substitute)

The BZX79-C68,113 is a direct electrical and mechanical equivalent to the BZX79-C68,143. All critical electrical parameters—Zener voltage, power rating, impedance, leakage current, and forward voltage—are identical. The component maintains the same operating temperature range, through-hole mounting configuration, and DO-35 axial package format. Both parts carry Active product status and ROHS3 compliance. The primary distinction is packaging format: BZX79-C68,113 is supplied in Cut Tape (CT) format rather than Tape & Box (TB). This substitute is suitable for applications where packaging format does not constrain procurement or assembly processes.

BZX79-B68,143 (Parametric Equivalent)

The BZX79-B68,143 is a parametric equivalent offering enhanced voltage tolerance specification (±2% versus ±5%). All electrical parameters remain identical to the primary part: 68 V Zener voltage, 400 mW power dissipation, 240 Ohms impedance, and identical leakage and forward voltage characteristics. Operating temperature range, through-hole mounting, and DO-35 axial package configuration are unchanged. Both parts maintain Active status and ROHS3 compliance. The BZX79-B68,143 is supplied in Cut Tape (CT) format. This substitute is applicable in applications requiring tighter Zener voltage regulation or where the enhanced tolerance specification aligns with circuit design requirements.

Frequently Asked Questions (FAQ)

Q: Can BZX79-C68,113 be used as a direct replacement for BZX79-C68,143?

A: Yes. The BZX79-C68,113 maintains identical electrical specifications across all critical parameters: 68 V Zener voltage, 400 mW power rating, 240 Ohms impedance, and identical leakage and forward voltage characteristics. Both components use through-hole mounting in DO-35 axial configuration. The only difference is packaging format (Cut Tape versus Tape & Box), which does not affect electrical or mechanical compatibility.

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

A: The primary difference is Zener voltage tolerance: BZX79-C68,143 specifies ±5% tolerance, while BZX79-B68,143 specifies ±2% tolerance. All other electrical parameters—Zener voltage nominal value (68 V), power dissipation (400 mW), impedance (240 Ohms), leakage current, and forward voltage—are identical. The tighter tolerance of the BZX79-B68,143 provides enhanced voltage regulation precision.

Q: Are all three parts RoHS compliant?

A: Yes. BZX79-C68,143, BZX79-C68,113, and BZX79-B68,143 all carry ROHS3 compliance certification and are REACH Unaffected. All three parts meet current environmental and regulatory requirements.

Q: Does packaging format affect circuit performance?

A: No. Packaging format (Tape & Box versus Cut Tape) is a procurement and assembly consideration only. It does not affect electrical performance, mechanical fit, or thermal characteristics. Component selection between formats depends on manufacturing workflow and inventory management requirements.

Q: Can these parts operate at the same temperature range?

A: Yes. All three substitute parts operate across the identical temperature range of -65°C to 200°C. Thermal performance and operating envelope are equivalent across all variants.

Q: What inventory levels are available for each part?

A: BZX79-C68,143 has 20,200 pieces in stock. BZX79-C68,113 has 11,110 pieces in stock. BZX79-B68,143 has 6,133 pieces in stock. Inventory availability should be confirmed at time of procurement.