CZRF52C15-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The CZRF52C15-HF is a 15 V, 200 mW surface mount zener diode manufactured by Comchip Technology in 1005/SOD-323F packaging. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the specified parameter tolerances for this zener diode category.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	15	V
Tolerance	±5%	-
Power - Max	200	mW
Impedance (Max)	20	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 11 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-55°C ~ 125°C	-
Mounting Type	Surface Mount	-
Package / Case	1005 (2512 Metric) / SOD-323F	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the CZRF52C15-HF is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - Zener (Nom): 15 V (exact match required)
Mounting Type: Surface Mount
Package compatibility: SOD-323F or equivalent mechanical footprint
RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

Power - Max: 200 mW or greater
Tolerance: ±5% or tighter
Operating Temperature range: Must encompass -55°C to 125°C minimum
Impedance (Max): 20 Ohms or lower preferred for performance consistency

Substitute parts are grouped into two categories: direct equivalents (identical specifications) and functional equivalents (meeting or exceeding electrical performance within the same package family).

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Package	Temp Range	RoHS
CZRF52C15-HF	Comchip Technology	15 V	±5%	200 mW	20 Ω	1005/SOD-323F	-55°C ~ 125°C	ROHS3
CZRF52C15	Comchip Technology	15 V	±5%	200 mW	30 Ω	1005/SOD-323F	-55°C ~ 125°C	ROHS3
BZT52C15S-TP	Micro Commercial Co	15 V	±6%	200 mW	30 Ω	SOD-323	-65°C ~ 150°C	ROHS3
BZX84J-B15,115	Nexperia USA Inc.	15 V	±2%	550 mW	15 Ω	SOD-323F	-65°C ~ 150°C	ROHS3
MMXZ5245B-TP	Micro Commercial Co	15 V	±5%	200 mW	16 Ω	SOD-323	-55°C ~ 150°C	ROHS3
TDZ15J,115	Nexperia USA Inc.	15 V	±2%	500 mW	15 Ω	SOD-323F	-55°C ~ 150°C	ROHS3

Engineering Selection Recommendations

Direct Equivalent (Identical Specifications): CZRF52C15 from Comchip Technology is a direct equivalent with identical electrical specifications. The only parameter difference is impedance (30 Ω vs. 20 Ω maximum), which remains within acceptable operational margins for zener diode applications. This part maintains the same package, temperature range, and compliance status.

Functional Equivalents (Enhanced Performance):

BZX84J-B15,115 and TDZ15J,115 from Nexperia USA Inc. are functional equivalents that exceed the CZRF52C15-HF specifications. Both parts feature:

Higher power dissipation (550 mW and 500 mW respectively vs. 200 mW)
Tighter tolerance (±2% vs. ±5%)
Lower impedance (15 Ω vs. 20 Ω)
Extended temperature range (-65°C to 150°C vs. -55°C to 125°C)
AEC-Q101 automotive qualification

These parts are suitable for applications requiring enhanced thermal performance or stricter voltage regulation. Both are ROHS3 compliant and available in SOD-323F packaging.

Compatible Alternatives (Same Power Rating):

BZT52C15S-TP and MMXZ5245B-TP from Micro Commercial Co maintain the 200 mW power rating and ±5% tolerance specification. BZT52C15S-TP offers extended temperature range (-65°C to 150°C). MMXZ5245B-TP provides improved impedance performance (16 Ω) and extended upper temperature limit (150°C). Both are ROHS3 compliant and available in SOD-323 packaging.

All substitute parts listed are Active product status and ROHS3 compliant, meeting regulatory requirements equivalent to the main part.

Frequently Asked Questions (FAQ)

Q: Can CZRF52C15 be used as a direct replacement for CZRF52C15-HF?

A: Yes. CZRF52C15 is a direct equivalent from the same manufacturer with identical zener voltage (15 V), tolerance (±5%), power rating (200 mW), and package (1005/SOD-323F). The impedance specification differs (30 Ω vs. 20 Ω maximum), but this remains within acceptable operational parameters for zener diode voltage regulation applications.

Q: What is the difference between SOD-323 and SOD-323F packaging?

A: Both are surface mount packages with identical mechanical footprints suitable for 1005 (2512 Metric) land patterns. SOD-323F is a variant designation used by certain manufacturers. Parts specified in either package are mechanically compatible for PCB assembly purposes.

Q: Are the Nexperia parts (BZX84J-B15,115 and TDZ15J,115) suitable replacements for higher reliability applications?

A: Both Nexperia parts carry AEC-Q101 automotive qualification and feature tighter voltage tolerance (±2%), lower impedance (15 Ω), and higher power dissipation (550 mW and 500 mW respectively). These characteristics support applications requiring enhanced thermal stability and voltage regulation precision. Extended temperature range (-65°C to 150°C) accommodates broader operating environments.

Q: What is the significance of the ±2% tolerance in BZX84J-B15,115 and TDZ15J,115 compared to the ±5% tolerance in CZRF52C15-HF?

A: Tighter tolerance (±2%) provides more precise zener voltage regulation, reducing voltage variation across the component population. This is beneficial in precision voltage reference circuits. The ±5% tolerance of CZRF52C15-HF is suitable for general-purpose voltage clamping and protection applications where tighter regulation is not required.

Q: Can parts with higher power ratings (550 mW, 500 mW) be used in place of the 200 mW CZRF52C15-HF?

A: Yes. Higher power-rated zener diodes are functionally compatible in circuits designed for 200 mW operation. The higher power rating provides additional thermal margin and does not degrade performance in lower-power applications. Circuit design must ensure the zener diode operates within its specified current and power limits.

Q: Are all listed substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (CZRF52C15, BZT52C15S-TP, BZX84J-B15,115, MMXZ5245B-TP, TDZ15J,115) are ROHS3 compliant, matching the compliance status of the main part CZRF52C15-HF.

Q: What is the operating temperature consideration when selecting between substitute parts?

A: CZRF52C15-HF operates from -55°C to 125°C. Substitute parts offer extended ranges: BZT52C15S-TP, BZX84J-B15,115, and MMXZ5245B-TP extend to -65°C or 150°C. Selection depends on application environment. For standard industrial applications within -55°C to 125°C, all listed parts are suitable. For extended temperature applications, Nexperia and extended-range Micro Commercial Co parts provide additional margin.

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