CZRF52C16-HF Equivalent & Substitute Parts

Part Overview

The CZRF52C16-HF is a 16 V, 200 mW Zener diode manufactured by Comchip Technology in Surface Mount 1005/SOD-323F packaging. This component is classified as Active and RoHS3 Compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain discontinuity, or design flexibility needs within the allowed parameter tolerances for this Zener diode category.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	16	V
Tolerance	±5%	-
Power - Max	200	mW
Impedance (Max)	40	Ohms
Current - Reverse Leakage @ Vr	100 nA @ 12 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	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution eligibility for the CZRF52C16-HF is determined by the following criteria:

Primary Matching Parameters:

Zener voltage: 16 V (nominal)
Zener voltage tolerance: ±5% or tighter
Power dissipation: 200 mW or greater
Mounting type: Surface Mount
Package compatibility: SOD-323 or SOD-323F

Secondary Compatibility Parameters:

Impedance (Zzt): 40 Ohms or lower
Reverse leakage current: 100 nA or lower at specified reverse voltage
Forward voltage: 900 mV or lower at 10 mA
Operating temperature range: Must include -55°C to 125°C minimum
RoHS3 Compliance: Required
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories:

Category A - Direct Substitutes (200 mW Power Rating): Parts with 200 mW power rating and SOD-323 packaging that meet all primary parameters.

Category B - Enhanced Substitutes (500+ mW Power Rating): Parts with 500 mW or greater power rating in SOD-323F or alternative Surface Mount packages. These provide superior thermal performance and lower impedance while maintaining 16 V nominal Zener voltage.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Reverse Leakage @ Vr	Vf (Max) @ If	Temp Range	Package	RoHS3
CZRF52C16-HF	Comchip Technology	16 V	±5%	200 mW	40 Ω	100 nA @ 12 V	900 mV @ 10 mA	-55°C ~ 125°C	SOD-323F	Yes
BZT52C16S-TP	Micro Commercial Co	16 V	±6%	200 mW	40 Ω	100 nA @ 11.2 V	900 mV @ 10 mA	-65°C ~ 150°C	SOD-323	Yes
MMXZ5246B-TP	Micro Commercial Co	16 V	±5%	200 mW	17 Ω	100 nA @ 12 V	1.2 V @ 100 mA	-55°C ~ 150°C	SOD-323	Yes
BZX84J-B16,115	NXP Semiconductors	16 V	±2%	550 mW	20 Ω	50 nA @ 11.2 V	1.1 V @ 100 mA	-55°C ~ 150°C	SOD-323F	Yes
TDZ16J,115	Nexperia USA Inc.	16 V	±2%	500 mW	20 Ω	50 nA @ 11.2 V	1.1 V @ 100 mA	-55°C ~ 150°C	SOD-323F	Yes
PLZ18A-G3/H	Vishay General Semiconductor	16 V	±3%	500 mW	23 Ω	200 nA @ 13 V	800 mV @ 10 mA	-55°C ~ 150°C	DO-219AC	Yes

Engineering Selection Recommendations

For Direct Replacement (Same Power Rating):

BZT52C16S-TP and MMXZ5246B-TP are suitable direct substitutes for the CZRF52C16-HF. Both maintain the 200 mW power rating and 16 V nominal Zener voltage. BZT52C16S-TP offers extended operating temperature range (-65°C to 150°C) compared to the original part. MMXZ5246B-TP provides lower impedance (17 Ω vs. 40 Ω) while maintaining identical reverse leakage specifications. Both are RoHS3 Compliant with MSL 1 rating.

For Enhanced Performance (Higher Power Rating):

BZX84J-B16,115, TDZ16J,115, and PLZ18A-G3/H provide superior thermal performance with 500 mW or 550 mW power ratings. These parts are suitable when thermal margin or higher current handling is required. BZX84J-B16,115 and TDZ16J,115 are AEC-Q101 qualified automotive-grade components with tighter tolerance (±2%) and lower impedance (20 Ω). PLZ18A-G3/H uses DO-219AC packaging, which differs from the original SOD-323F form factor and requires PCB layout verification.

Compliance Verification:

All substitute parts maintain RoHS3 Compliance and MSL 1 (Unlimited) moisture sensitivity rating. Operating temperature ranges for all substitutes encompass or exceed the original -55°C to 125°C specification.

Frequently Asked Questions (FAQ)

Q1: Can BZT52C16S-TP replace CZRF52C16-HF directly on the PCB?

A: Yes. BZT52C16S-TP is a direct substitute with identical 200 mW power rating, 16 V nominal Zener voltage, and SOD-323 packaging. The ±6% tolerance is slightly wider than the original ±5%, but remains within acceptable Zener diode specifications. Extended temperature range (-65°C to 150°C) provides additional operational margin.

Q2: What is the advantage of using TDZ16J,115 or BZX84J-B16,115 over the original CZRF52C16-HF?

A: These parts offer 500 mW and 550 mW power ratings respectively, compared to 200 mW in the original. This provides superior thermal performance and allows higher current handling. Both feature tighter Zener voltage tolerance (±2%), lower impedance (20 Ω), and AEC-Q101 automotive qualification. They are suitable for applications requiring enhanced reliability or thermal headroom.

Q3: Is MMXZ5246B-TP compatible with the original circuit design?

A: Yes. MMXZ5246B-TP maintains 200 mW power rating and 16 V nominal voltage with ±5% tolerance matching the original. It provides lower impedance (17 Ω vs. 40 Ω), which may improve voltage regulation performance. SOD-323 packaging is compatible with the original 1005/SOD-323F footprint.

Q4: Can PLZ18A-G3/H be used as a substitute?

A: PLZ18A-G3/H is electrically compatible with 16 V nominal voltage and 500 mW power rating. However, it uses DO-219AC (microSMF) packaging, which differs from the original SOD-323F. PCB layout and footprint verification is required before implementation. This part is suitable only if the PCB design accommodates the alternative package.

Q5: Are all substitute parts RoHS3 Compliant?

A: Yes. All listed substitute parts are RoHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original CZRF52C16-HF specifications.

Q6: Which substitute offers the best voltage regulation performance?

A: BZX84J-B16,115 and TDZ16J,115 offer the lowest impedance (20 Ω) and tightest tolerance (±2%), providing superior voltage regulation compared to the original 40 Ω impedance and ±5% tolerance. These are recommended for precision voltage reference applications.

Q7: What is the temperature operating range difference between substitutes?

A: The original CZRF52C16-HF operates from -55°C to 125°C. All substitutes extend this range to at least -55°C to 150°C, providing additional thermal margin. This is particularly beneficial for industrial and automotive applications.

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