CZRUR52C4V3 Equivalent & Substitute Parts

Part Overview

The CZRUR52C4V3 is a Zener diode manufactured by Comchip Technology, designed for surface mount applications in the 0603/SOD-523F package. This component operates at a nominal Zener voltage of 4.3 V with a maximum power dissipation of 150 mW, suitable for voltage regulation and protection circuits. The part is Active in product status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to provide design flexibility, inventory alternatives, and supply chain continuity while maintaining identical electrical and mechanical specifications.

Substiute Parts

CZRUR52C4V3

Comchip TechnologyIn Stock: 1041CZRUR52C4V3 Datasheet

Current PartRFQ

CZRU52C4V3

Comchip TechnologyIn Stock: 2146CZRU52C4V3 Datasheet

Parametric EquivalentRFQ

CZRU52C4V3-HF

Comchip TechnologyIn Stock: 1031CZRU52C4V3-HF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CZRUR52C4V3 are qualified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain identical:

Zener voltage specification (4.3 V nominal with ±5% tolerance), maximum power dissipation (150 mW), impedance rating (95 Ohms maximum), reverse leakage current (5 µA @ 1 V), forward voltage characteristic (900 mV @ 10 mA), operating temperature range (-55°C to 125°C), surface mount configuration, and 0603/SOD-523F package footprint.

All substitute parts listed maintain these specifications without deviation. Substitutes are differentiated only by manufacturer part number designation and inventory availability, with no variation in electrical performance or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All three part numbers—CZRUR52C4V3, CZRU52C4V3, and CZRU52C4V3-HF—are functionally equivalent and interchangeable for circuit applications requiring a 4.3 V Zener diode in the 0603/SOD-523F package. Selection among these alternatives should be based on inventory availability and supply chain requirements rather than electrical performance differences.

All substitute parts maintain Active product status and carry identical compliance certifications: ROHS3 compliance, REACH Unaffected status, and unlimited moisture sensitivity rating (MSL 1). The parts are suitable for applications across the full operating temperature range of -55°C to 125°C.

Component selection should prioritize availability and lead time. The CZRU52C4V3 variant currently maintains the highest inventory level at 2129 pieces, followed by CZRU52C4V3-HF at 981 pieces, and the primary part CZRUR52C4V3 at 1014 pieces.

Frequently Asked Questions (FAQ)

Q: Are CZRUR52C4V3, CZRU52C4V3, and CZRU52C4V3-HF electrically identical?

A: Yes. All three part numbers share identical electrical specifications including 4.3 V nominal Zener voltage, ±5% tolerance, 150 mW maximum power dissipation, 95 Ohms maximum impedance, and identical forward and reverse characteristics. They are parametric equivalents.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All three parts use the identical 0603/SOD-523F surface mount package with 2-SMD, No Lead configuration. PCB footprints, solder pad layouts, and component placement are identical across all variants.

Q: What is the difference between CZRU52C4V3 and CZRU52C4V3-HF?

A: Both parts are parametrically equivalent with no electrical specification differences. The "-HF" designation indicates a manufacturing variant from Comchip Technology. Selection between these variants should be based on inventory availability and supplier preference, as electrical performance is identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. CZRUR52C4V3, CZRU52C4V3, and CZRU52C4V3-HF all carry ROHS3 compliance certification and are REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity rating for these parts?

A: All three parts carry MSL 1 (Unlimited) moisture sensitivity level, indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.

Q: Can I substitute CZRU52C4V3-HF for CZRUR52C4V3 in production?

A: Yes. The parts are electrically and mechanically equivalent. Production substitution is valid provided the part number change is documented in design records and bill of materials updates.