BZX79-C47,133 Equivalent & Substitute Parts

Part Overview

The BZX79-C47,133 is a Zener diode manufactured by Nexperia USA Inc., rated at 47 V nominal with 400 mW maximum power dissipation and ±5% tolerance. This through-hole component operates across a temperature range of -65°C to 200°C and is housed in a DO-204AH (DO-35) axial package. The device is ROHS3 compliant and carries Active product status. Equivalent and substitute parts are identified to address inventory availability, packaging format preferences, or tolerance requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

BZX79-C47,133

Nexperia USA Inc.In Stock: 1221BZX79-C47,133 Datasheet

Current PartRFQ

BZX79-C47,143

NXP SemiconductorsIn Stock: 176069BZX79-C47,143 Datasheet

Parametric EquivalentRFQ

BZX79-B47,143

Nexperia USA Inc.In Stock: 1060BZX79-B47,143 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BZX79-C47,133 are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

• Zener Voltage (Nom): 47 V (exact match required)
• Power Rating: 400 mW (exact match required)
• Impedance (Max): 170 Ohms (exact match required)
• Reverse Leakage Current: 50 nA (exact match required)
• Forward Voltage: 900 mV @ 10 mA (exact match required)
• Operating Temperature Range: -65°C to 200°C (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: DO-204AH, DO-35, Axial (exact match required)
• Supplier Device Package: ALF2 (exact match required)

Tolerance variations and packaging formats (Cut Tape, Bulk, Tape & Box) are permitted variations that do not affect electrical performance or mechanical fit. All substitute parts maintain Active product status and ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

All three parts—BZX79-C47,133, BZX79-C47,143, and BZX79-B47,143—are Active products suitable for direct substitution based on electrical and mechanical parameters. Selection between these parts is determined by:

BZX79-C47,143: This substitute maintains identical electrical specifications to the main part, including ±5% tolerance and 50 nA reverse leakage at 700 mV. The primary difference is packaging format (Bulk versus Cut Tape) and manufacturer designation (NXP Semiconductors). This part is appropriate when bulk packaging is acceptable and inventory availability is prioritized.

BZX79-B47,143: This substitute offers tighter tolerance (±2% versus ±5%), providing improved voltage accuracy. The reverse leakage specification is measured at a different voltage (32.9 V versus 700 mV), and packaging is provided in Tape & Box format. This part is appropriate when enhanced voltage tolerance is required and tape & box packaging is compatible with assembly processes. ROHS3 compliance is confirmed for this variant.

All parts operate across the identical temperature range (-65°C to 200°C), share the same DO-204AH axial package, and maintain the ALF2 supplier device package designation. Selection should be based on packaging availability, tolerance requirements, and compliance documentation needs.

Frequently Asked Questions (FAQ)

Q: Can BZX79-C47,143 be used as a direct replacement for BZX79-C47,133?

A: Yes. Both parts share identical electrical specifications: 47 V nominal zener voltage, ±5% tolerance, 400 mW power rating, 170 Ohms maximum impedance, and 50 nA reverse leakage at 700 mV. The primary difference is packaging format (Bulk versus Cut Tape). Electrical and mechanical compatibility is confirmed.

Q: What is the difference between BZX79-B47,143 and BZX79-C47,133?

A: The BZX79-B47,143 features tighter tolerance (±2% versus ±5%), providing improved voltage accuracy. The reverse leakage current is specified at 32.9 V rather than 700 mV. Packaging format differs (Tape & Box versus Cut Tape). All other electrical parameters, including zener voltage, power rating, impedance, and operating temperature range, are identical.

Q: Are all three parts housed in the same physical package?

A: Yes. All three parts use the DO-204AH (DO-35) axial package with ALF2 supplier device package designation. Physical dimensions and pin configuration are identical, enabling direct board-level substitution.

Q: What does the packaging format difference mean for component selection?

A: Packaging format refers to how components are supplied: Cut Tape (CT) is wound on tape for automated pick-and-place equipment, Bulk is supplied loose, and Tape & Box (TB) combines tape packaging with box containment. Electrical performance is unaffected by packaging format. Selection depends on assembly process compatibility and inventory handling requirements.

Q: Is tolerance selection important for this application?

A: Tolerance selection depends on circuit requirements. The BZX79-C47,133 and BZX79-C47,143 offer ±5% tolerance, while BZX79-B47,143 offers ±2% tolerance. Tighter tolerance (±2%) provides more precise zener voltage regulation. Select based on voltage accuracy requirements of the specific circuit design.

Q: Are all substitute parts ROHS3 compliant?

A: BZX79-C47,133 and BZX79-B47,143 are confirmed ROHS3 compliant. ROHS3 compliance status for BZX79-C47,143 is not specified in available documentation. Verify compliance requirements with your procurement or quality assurance department if ROHS3 certification is mandatory.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided that tolerance and compliance requirements are met. All three parts share identical electrical performance parameters, operating temperature range, and physical package dimensions. Verify that the selected part's tolerance specification aligns with circuit design specifications before implementation.