CZRF52C3V6-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The CZRF52C3V6-HF is a 3.6 V Zener diode manufactured by Comchip Technology, rated for 200 mW power dissipation in a surface mount 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 voltage circuits. Substitute parts may be required due to inventory availability, supply chain constraints, or design flexibility across manufacturing sources while maintaining equivalent electrical and mechanical performance.

Substiute Parts

CZRF52C3V6-HF

Comchip TechnologyIn Stock: 1088CZRF52C3V6-HF Datasheet

Current PartRFQ

BZT52C3V6S-TP

Micro Commercial CoIn Stock: 2221BZT52C3V6S-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CZRF52C3V6-HF is permissible with parts meeting the following criteria:

Critical Electrical Parameters (Must Match or Exceed):

• Zener voltage: 3.6 V nominal
• Power rating: 200 mW minimum
• Mounting type: Surface Mount
• Package compatibility: SOD-323 or equivalent mechanical footprint (1005/2512 Metric)

Allowable Variations:

• Tolerance: ±5% to ±6% acceptable (voltage regulation tolerance within design margin)
• Impedance (Zzt): 90 to 95 Ohms (minor variation acceptable for dynamic impedance)
• Reverse leakage current: Up to 15 µA @ 1 V (lower values acceptable)
• Forward voltage: 900 mV @ 10 mA (standard for this diode class)
• Operating temperature range: -55°C to 125°C minimum (extended ranges acceptable)
• RoHS and REACH compliance: ROHS3 Compliant and REACH Unaffected required

The substitute part BZT52C3V6S-TP from Micro Commercial Co meets all substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: CZRF52C3V6-HF

• Comchip Technology manufacturer source
• ROHS3 compliant, REACH unaffected
• MSL 1 rating (unlimited moisture exposure tolerance)
• Active product status with 1008 units in stock

Substitute Selection: BZT52C3V6S-TP

• Micro Commercial Co manufacturer source
• ROHS3 compliant, REACH unaffected
• MSL 1 rating (unlimited moisture exposure tolerance)
• Active product status with 2203 units in stock
• Extended operating temperature range (-65°C to 150°C vs. -55°C to 125°C)
• Lower reverse leakage current (5 µA vs. 15 µA @ 1 V)
• Slightly lower impedance (90 Ohms vs. 95 Ohms)

Both parts satisfy regulatory compliance requirements and are suitable for direct substitution in 3.6 V Zener diode applications. Selection between them depends on inventory availability and supply chain requirements. The BZT52C3V6S-TP offers superior performance characteristics in temperature range and leakage current specifications.

Frequently Asked Questions (FAQ)

Q: Can BZT52C3V6S-TP replace CZRF52C3V6-HF in existing designs? A: Yes. Both parts share identical nominal Zener voltage (3.6 V), power rating (200 mW), forward voltage characteristics, and surface mount SOD-323 package footprint. Tolerance variation (±6% vs. ±5%) remains within acceptable design margins for voltage regulation circuits.

Q: What is the difference in impedance between these parts? A: The CZRF52C3V6-HF has maximum impedance of 95 Ohms, while the BZT52C3V6S-TP has 90 Ohms. This 5-Ohm difference represents less than 6% variation and does not affect circuit performance in standard voltage regulation applications.

Q: Are the packages mechanically identical? A: Both parts use SOD-323 package geometry with 1005 (2512 Metric) footprint dimensions. They are mechanically and electrically interchangeable on PCB layouts designed for either package designation.

Q: Does the lower reverse leakage current of BZT52C3V6S-TP affect compatibility? A: No. Lower reverse leakage (5 µA vs. 15 µA @ 1 V) is a performance improvement and does not create compatibility issues. It may reduce standby power consumption in some applications.

Q: Are both parts RoHS and REACH compliant? A: Yes. Both CZRF52C3V6-HF and BZT52C3V6S-TP are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the significance of MSL 1 rating? A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life and moisture exposure tolerance. Both parts require no special moisture control during storage, handling, or assembly.

Q: Can BZT52C3V6S-TP be used in applications requiring the full -55°C to 125°C range? A: Yes. The BZT52C3V6S-TP operating range of -65°C to 150°C fully encompasses the -55°C to 125°C requirement, providing additional thermal margin.