CZRF52C3-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The CZRF52C3-HF is a 3 V, 200 mW surface mount zener diode manufactured by Comchip Technology in the 1005/SOD-323F package. This component is classified as Active and is ROHS3 compliant. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference circuits where precise voltage clamping at 3 V is required. Substitute parts may be necessary due to inventory availability, lead time constraints, or design optimization for enhanced performance margins.

Substiute Parts

CZRF52C3-HF

Comchip TechnologyIn Stock: 871CZRF52C3-HF Datasheet

Current PartRFQ

BZX84J-B3V0,115

NXP USA Inc.In Stock: 33412BZX84J-B3V0,115 Datasheet

MFR RecommendedRFQ

BZX84J-C3V0,115

Nexperia USA Inc.In Stock: 7854BZX84J-C3V0,115 Datasheet

MFR RecommendedRFQ

TDZ3V0J,115

Nexperia USA Inc.In Stock: 31338TDZ3V0J,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CZRF52C3-HF is determined by the following critical parameters:

Mandatory Matching Criteria:

• Voltage - Zener (Nominal): 3 V
• Mounting Type: Surface Mount
• Package / Case: SOD-323F compatible
• Impedance (Maximum): 95 Ohms

Allowable Variation Parameters:

• Power - Maximum: Substitute parts may exceed 200 mW (higher power rating provides design margin)
• Tolerance: Substitute parts may have tighter tolerance (±2% is acceptable for ±5% requirement)
• Current - Reverse Leakage: Substitute parts may have lower leakage (10 µA is acceptable for 50 µA specification)
• Voltage - Forward: Substitute parts may have different forward voltage at different test currents
• Operating Temperature Range: Substitute parts may have extended range (-65°C to 150°C is acceptable for -55°C to 125°C requirement)

All substitute parts listed maintain the 3 V zener voltage, SOD-323F package compatibility, and 95 Ohm impedance specification. Enhanced electrical characteristics in substitute parts provide improved performance margins without compromising circuit function.

Parameter Comparison

Engineering Selection Recommendations

BZX84J-B3V0,115 (NXP USA Inc.): This substitute provides 550 mW power rating with ±2% tolerance and AEC-Q101 automotive qualification. The extended operating temperature range (-65 to 150°C) and reduced reverse leakage (10 µA) offer enhanced performance margins. Suitable for applications requiring automotive-grade reliability and tighter voltage tolerance. Available in bulk packaging.

BZX84J-C3V0,115 (Nexperia USA Inc.): This substitute maintains ±5% tolerance matching the original specification while providing 550 mW power rating and AEC-Q101 automotive qualification. Extended temperature range and reduced reverse leakage provide design margin. Available in Tape & Reel packaging, matching the original CZRF52C3-HF packaging format. ROHS3 compliant.

TDZ3V0J,115 (Nexperia USA Inc.): This substitute from the TDZxJ series provides 500 mW power rating with ±2% tolerance and AEC-Q101 automotive qualification. Operating temperature range extends to 150°C maximum. Reduced reverse leakage and tighter tolerance provide enhanced performance. Available in Tape & Reel packaging. ROHS3 compliant.

All three substitutes maintain the critical 3 V zener voltage, 95 Ohm impedance, and SOD-323F package compatibility required for direct circuit substitution.

Frequently Asked Questions (FAQ)

Q: Can BZX84J-B3V0,115, BZX84J-C3V0,115, and TDZ3V0J,115 be used interchangeably with CZRF52C3-HF?

A: Yes, within the constraints of the specified parameters. All three substitutes maintain the 3 V nominal zener voltage, 95 Ohm impedance, and SOD-323F package compatibility. The higher power ratings (500–550 mW versus 200 mW) and lower reverse leakage provide enhanced performance margins. Tolerance differences (±2% versus ±5%) do not prevent substitution; tighter tolerance is acceptable for applications requiring ±5%.

Q: What is the impact of higher power ratings in substitute parts?

A: Higher power ratings (500–550 mW) in substitute parts provide additional thermal margin and allow the component to dissipate more power without exceeding junction temperature limits. This does not negatively affect circuit function; it extends the operational envelope and improves reliability under transient overvoltage conditions.

Q: Are the substitute parts compatible with the original SOD-323F package footprint?

A: Yes. All substitute parts use the SOD-323F package designation, which is mechanically and electrically compatible with the original 1005/SOD-323F package. PCB footprints designed for CZRF52C3-HF will accommodate all listed substitutes without modification.

Q: What is the significance of AEC-Q101 qualification on substitute parts?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. BZX84J-B3V0,115, BZX84J-C3V0,115, and TDZ3V0J,115 all carry AEC-Q101 qualification, indicating compliance with automotive reliability and quality standards. This qualification is not specified for the original CZRF52C3-HF but does not prevent substitution in non-automotive applications.

Q: How do tolerance differences affect circuit design?

A: The original CZRF52C3-HF specifies ±5% tolerance on the 3 V zener voltage. Substitute parts with ±2% tolerance (BZX84J-B3V0,115 and TDZ3V0J,115) provide tighter voltage regulation. This tighter tolerance is acceptable and beneficial for applications requiring precise voltage reference. BZX84J-C3V0,115 maintains ±5% tolerance, matching the original specification exactly.

Q: What is the difference between Tape & Reel and Bulk packaging?

A: Tape & Reel (TR) packaging is used for automated assembly processes and provides components wound on continuous tape. Bulk packaging contains loose components. BZX84J-B3V0,115 is supplied in bulk; BZX84J-C3V0,115 and TDZ3V0J,115 are supplied in Tape & Reel format. Packaging selection depends on manufacturing process requirements, not electrical compatibility.

Q: Can reverse leakage current differences affect circuit performance?

A: The original CZRF52C3-HF specifies 50 µA reverse leakage at 1 V. All substitute parts specify 10 µA at 1 V, representing lower leakage. Lower reverse leakage improves circuit performance by reducing standby current and improving voltage regulation stability. This change is beneficial and does not compromise compatibility.