CZRF15VB Zener Diode Equivalent & Substitute Parts

Part Overview

The CZRF15VB is a 15 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. Substitute parts may be required due to inventory constraints, supply chain disruptions, or design optimization for specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

CZRF15VB

Comchip TechnologyIn Stock: 802CZRF15VB Datasheet

Current PartRFQ

BZT52C15S-TP

Micro Commercial CoIn Stock: 2051BZT52C15S-TP Datasheet

MFR RecommendedRFQ

MMXZ5245B-TP

Micro Commercial CoIn Stock: 3305MMXZ5245B-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of zener diodes is determined by the following critical parameters:

Primary Criteria (Must Match):

• Zener voltage (Vz): 15 V nominal
• Power dissipation rating: 200 mW minimum
• Package compatibility: SOD-323 or equivalent 1005 form factor
• Mounting type: Surface Mount
• RoHS3 compliance status

Secondary Criteria (Allowable Variation):

• Tolerance: ±2% to ±6% acceptable for voltage regulation applications
• Impedance (Zzt): 16 to 32 Ohms
• Reverse leakage current: 100 nA at specified reverse voltage
• Operating temperature range: Minimum -55°C to 125°C; extended range acceptable
• Forward voltage: Variation acceptable within specified test conditions

The substitute parts BZT52C15S-TP and MMXZ5245B-TP meet all primary criteria and fall within acceptable secondary parameter ranges for direct substitution in the CZRF15VB application.

Parameter Comparison

Engineering Selection Recommendations

CZRF15VB (Primary Component)

• Tightest tolerance specification at ±2%
• Suitable for applications requiring precise voltage regulation
• Operating temperature range: -55°C to 125°C
• All regulatory certifications met (ROHS3, REACH Unaffected, EAR99)

BZT52C15S-TP (Substitute Option 1)

• Tolerance ±6% acceptable for general voltage regulation and protection circuits
• Extended operating temperature range: -65°C to 150°C
• Impedance 30 Ohms closely matches primary component
• All regulatory certifications met
• Higher inventory availability (2000 pcs)

MMXZ5245B-TP (Substitute Option 2)

• Tolerance ±5% suitable for voltage regulation applications
• Lowest impedance at 16 Ohms provides superior high-frequency performance
• Extended operating temperature range: -55°C to 150°C
• All regulatory certifications met
• Highest inventory availability (3225 pcs)

Selection between substitute parts depends on application-specific requirements for impedance characteristics and temperature operating range. All three parts are electrically and mechanically compatible for direct substitution in standard zener diode circuit applications.

Frequently Asked Questions (FAQ)

Q: Can BZT52C15S-TP replace CZRF15VB in all applications? A: BZT52C15S-TP is electrically compatible for direct substitution. The ±6% tolerance is acceptable for voltage regulation and protection circuits. Verify application tolerance requirements before selection.

Q: What is the difference between MMXZ5245B-TP and BZT52C15S-TP? A: Both are 15 V, 200 mW zener diodes in SOD-323 package. MMXZ5245B-TP has lower impedance (16 Ohms vs 30 Ohms) and tighter tolerance (±5% vs ±6%), providing better performance in high-frequency applications. BZT52C15S-TP has extended low-temperature rating (-65°C vs -55°C).

Q: Are the package designations 1005 and SOD-323 equivalent? A: Yes. 1005 is the metric designation (2512 Metric) and SOD-323 is the industry standard designation for the same surface mount package form factor used in these zener diodes.

Q: Do all three parts meet RoHS compliance requirements? A: Yes. CZRF15VB, BZT52C15S-TP, and MMXZ5245B-TP are all ROHS3 compliant and REACH unaffected.

Q: Which substitute part has the best availability? A: MMXZ5245B-TP has the highest inventory at 3225 pcs, followed by BZT52C15S-TP at 2000 pcs.

Q: Can these parts be used interchangeably on the same PCB assembly? A: Yes. All three parts use the same SOD-323 surface mount package and have identical pin configurations, allowing direct PCB footprint compatibility.