CZRF15VB-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The CZRF15VB-HF is a 15 V, 200 mW Zener diode manufactured by Comchip Technology in a 1005/SOD-323F surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement. The part operates across a temperature range of -55°C to 125°C with ±2% voltage tolerance and ROHS3 compliance.

Substiute Parts

CZRF15VB-HF

Comchip TechnologyIn Stock: 744CZRF15VB-HF Datasheet

Current PartRFQ

CZRF15VB

Comchip TechnologyIn Stock: 802CZRF15VB Datasheet

Parametric EquivalentRFQ

BZT52C15S-TP

Micro Commercial CoIn Stock: 2051BZT52C15S-TP Datasheet

MFR RecommendedRFQ

MMXZ5245B-TP

Micro Commercial CoIn Stock: 3305MMXZ5245B-TP Datasheet

MFR RecommendedRFQ

MMXZ5245C-TP

Micro Commercial CoIn Stock: 796MMXZ5245C-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CZRF15VB-HF is determined by the following critical parameters:

Primary Matching Criteria:

• Zener voltage: 15 V nominal
• Power dissipation: 200 mW maximum
• Mounting type: Surface mount
• Package compatibility: SOD-323 or equivalent footprint (1005/SOD-323F)
• RoHS3 compliance and MSL rating

Tolerance Considerations: Zener voltage tolerance varies among substitutes. The CZRF15VB-HF specifies ±2% tolerance. Substitute parts with wider tolerances (±5%, ±6%) remain functionally equivalent for applications where the nominal 15 V specification is the primary design requirement, provided circuit design accommodates the tolerance band.

Impedance and Leakage: Impedance values range from 16 to 32 Ohms across the substitute group. Reverse leakage current specifications are consistent at 100 nA across all parts at similar reverse voltage conditions.

Temperature Range: The CZRF15VB-HF operates from -55°C to 125°C. Substitute parts from Micro Commercial Co extend the upper temperature limit to 150°C, providing enhanced thermal margin without reducing lower temperature performance.

Parameter Comparison

Engineering Selection Recommendations

Direct Parametric Equivalent: CZRF15VB is the primary equivalent to CZRF15VB-HF. Both parts are manufactured by Comchip Technology with identical electrical specifications, package designation, and compliance certifications. CZRF15VB maintains active product status, ensuring long-term availability and supply chain continuity.

Active Manufacturer Alternatives: BZT52C15S-TP, MMXZ5245B-TP, and MMXZ5245C-TP are manufactured by Micro Commercial Co and maintain active product status. All three parts meet the core electrical requirements: 15 V nominal zener voltage, 200 mW power rating, and surface mount SOD-323 packaging.

Compliance and Certification: All substitute parts carry ROHS3 compliance and MSL 1 (Unlimited) ratings, matching the original part's environmental and handling specifications. REACH status is consistent across all alternatives.

Packaging Consideration: The original CZRF15VB-HF specifies 1005/SOD-323F packaging. Substitute parts from Micro Commercial Co use SC-76/SOD-323 designation. Both designations refer to the same physical footprint and are mechanically and electrically compatible for PCB assembly.

Temperature Range Extension: Substitute parts from Micro Commercial Co extend the upper operating temperature to 150°C compared to the original 125°C limit. This provides additional thermal margin for applications operating in elevated ambient conditions.

Frequently Asked Questions (FAQ)

Q: Can CZRF15VB directly replace CZRF15VB-HF in existing designs?

A: Yes. CZRF15VB is a parametric equivalent manufactured by the same supplier with identical electrical specifications, tolerance, and package designation. The only difference is active product status versus obsolete status.

Q: What is the difference between 1005/SOD-323F and SC-76/SOD-323 packaging?

A: Both designations refer to the same physical surface mount package footprint. 1005 is the metric designation (2512 Metric), while SC-76 and SOD-323 are alternative naming conventions used by different manufacturers. PCB footprints are compatible.

Q: Why do substitute parts have different impedance values?

A: Impedance variation (16 to 32 Ohms) reflects manufacturing differences between suppliers. All values remain within acceptable ranges for 15 V, 200 mW zener diodes. Circuit performance is not compromised by these variations for standard voltage regulation applications.

Q: Can I use BZT52C15S-TP if my design requires ±2% tolerance?

A: BZT52C15S-TP specifies ±6% tolerance, which is wider than the original ±2%. Use this part only if circuit design accommodates the wider tolerance band. For applications requiring strict ±2% tolerance, use CZRF15VB or MMXZ5245C-TP.

Q: What is the advantage of MMXZ5245B-TP or MMXZ5245C-TP over CZRF15VB?

A: Both Micro Commercial Co parts extend the upper operating temperature to 150°C versus 125°C for CZRF15VB. MMXZ5245C-TP maintains ±2% tolerance matching the original part. Select based on temperature requirements and tolerance specifications for your application.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original CZRF15VB-HF specification.

Q: What is MSL 1 (Unlimited) and why is it important?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All parts in this comparison carry this rating, ensuring consistent handling procedures across the entire substitute group.