BZT52C24S RRG Equivalent & Substitute Parts

Part Overview

The BZT52C24S RRG is a 24 V Zener diode rated for 200 mW power dissipation in a surface mount SOD-323F package. Manufactured by Taiwan Semiconductor Corporation, this component is classified as Active and complies with RoHS3 and REACH standards. The part is suitable for voltage regulation and protection circuits requiring a nominal Zener voltage of 24 V with ±5% tolerance.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part number becomes unavailable or when alternative tolerance specifications are required for specific circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	24	V
Tolerance	±5%	%
Power - Max	200	mW
Impedance (Max)	70	Ohms
Current - Reverse Leakage @ Vr	45	nA @ 16.8 V
Voltage - Forward (Vf) (Max) @ If	1	V @ 10 mA
Operating Temperature Range	-65 to 150	°C (TJ)
Mounting Type	Surface Mount
Package / Case	SC-90, SOD-323F
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BZT52C24S RRG is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Zener (Nom): 24 V (exact match required)
Power - Max: 200 mW (exact match required)
Package / Case: SOD-323F (exact match required)
Mounting Type: Surface Mount (exact match required)
Operating Temperature Range: -65°C to 150°C (exact match required)

Secondary Substitution Criteria:

Tolerance: ±2% or ±5% (tighter tolerance acceptable)
Impedance (Max): 70 Ohms or lower (lower impedance acceptable)
Current - Reverse Leakage @ Vr: 45 nA @ 16.8 V (exact match or lower acceptable)
Voltage - Forward (Vf) (Max) @ If: 1 V @ 10 mA (exact match or lower acceptable)

Substitute parts are grouped into two categories:

Parametric Equivalents (Taiwan Semiconductor Corporation): BZT52B24S R9G and BZT52C24S R9G differ only in tolerance specification (±2% and ±5% respectively) while maintaining identical electrical performance across all other parameters. These parts are supplied in Cut Tape (CT) & Digi-Reel® packaging.

Direct and Similar Equivalents (Fairchild Semiconductor): MM3Z24VC and MM3Z24VB are manufactured by Fairchild Semiconductor with impedance specification of 65 Ohms (lower than the main part) and are supplied in Bulk packaging. These parts maintain identical Zener voltage, power rating, and package specifications.

Parameter Comparison

Parameter	BZT52C24S RRG	BZT52B24S R9G	BZT52C24S R9G	MM3Z24VC	MM3Z24VB
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	Taiwan Semiconductor	Fairchild Semiconductor	Fairchild Semiconductor
Voltage - Zener (Nom)	24 V	24 V	24 V	24 V	24 V
Tolerance	±5%	±2%	±5%	±5%	±2%
Power - Max	200 mW	200 mW	200 mW	200 mW	200 mW
Impedance (Max)	70 Ohms	70 Ohms	70 Ohms	65 Ohms	65 Ohms
Current - Reverse Leakage @ Vr	45 nA @ 16.8 V	45 nA @ 16.8 V	45 nA @ 16.8 V	45 nA @ 16.8 V	45 nA @ 16.8 V
Voltage - Forward (Vf) (Max) @ If	1 V @ 10 mA	1 V @ 10 mA	1 V @ 10 mA	1 V @ 10 mA	1 V @ 10 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-90, SOD-323F	SC-90, SOD-323F	SC-90, SOD-323F	SC-90, SOD-323F	SC-90, SOD-323F
Product Status	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not specified	Not specified

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and are suitable for direct replacement in applications requiring a 24 V, 200 mW Zener diode in SOD-323F surface mount packaging.

Taiwan Semiconductor Corporation Parts (BZT52B24S R9G, BZT52C24S R9G): These parts are parametric equivalents with identical electrical specifications to the main part. Both are ROHS3 compliant with MSL 1 rating. The BZT52B24S R9G offers tighter tolerance (±2%) for applications requiring improved voltage regulation accuracy. The BZT52C24S R9G maintains the ±5% tolerance specification of the main part. Both are supplied in Cut Tape (CT) & Digi-Reel® packaging, supporting automated assembly processes.

Fairchild Semiconductor Parts (MM3Z24VC, MM3Z24VB): These parts provide direct functional equivalence with lower impedance specification (65 Ohms versus 70 Ohms), resulting in improved dynamic response characteristics. The MM3Z24VC maintains ±5% tolerance matching the main part, while MM3Z24VB provides ±2% tolerance for enhanced voltage regulation. Both are supplied in Bulk packaging. RoHS and MSL compliance information is not specified for these parts.

Selection between substitute parts should be based on packaging requirements (Cut Tape/Digi-Reel versus Bulk), tolerance specification needs (±2% versus ±5%), and compliance documentation requirements (ROHS3 and MSL ratings).

Frequently Asked Questions (FAQ)

Q: Can BZT52B24S R9G replace BZT52C24S RRG in all applications?

A: Yes. The BZT52B24S R9G is a parametric equivalent with identical electrical specifications except for tighter tolerance (±2% versus ±5%). The improved tolerance provides better voltage regulation accuracy and is suitable for all applications where the main part is specified.

Q: What is the difference between the Taiwan Semiconductor and Fairchild Semiconductor substitute parts?

A: Both manufacturers provide 24 V, 200 mW Zener diodes in SOD-323F packaging with identical Zener voltage and power ratings. The primary differences are: (1) Fairchild parts have lower impedance (65 Ohms versus 70 Ohms), (2) Taiwan Semiconductor parts are ROHS3 compliant with specified MSL 1 rating, and (3) packaging format differs (Cut Tape/Digi-Reel versus Bulk).

Q: Are the Fairchild MM3Z24VC and MM3Z24VB parts suitable for high-frequency applications?

A: The lower impedance specification (65 Ohms) of Fairchild parts provides improved dynamic response compared to the main part (70 Ohms). This characteristic is beneficial in applications requiring faster transient response. However, all parts maintain identical reverse leakage current and forward voltage specifications.

Q: What packaging format should be selected for automated assembly?

A: Taiwan Semiconductor parts (BZT52B24S R9G and BZT52C24S R9G) are supplied in Cut Tape (CT) & Digi-Reel® packaging, which is optimized for automated pick-and-place assembly. Fairchild parts are supplied in Bulk packaging, which requires manual handling or custom tape-and-reel processing.

Q: Can tolerance specification be changed during design?

A: Yes. The ±2% tolerance parts (BZT52B24S R9G and MM3Z24VB) are suitable for applications where the main part specifies ±5% tolerance. Tighter tolerance provides improved voltage regulation accuracy. However, applications designed for ±2% tolerance cannot use ±5% tolerance parts without circuit redesign.

Q: Are all substitute parts suitable for the full operating temperature range?

A: Yes. All identified substitute parts operate across the -65°C to 150°C temperature range, matching the main part specification. This ensures thermal performance consistency across all substitute options.

Q: What compliance certifications apply to each substitute part?

A: Taiwan Semiconductor parts (BZT52B24S R9G and BZT52C24S R9G) are ROHS3 compliant with MSL 1 (Unlimited) rating. Fairchild parts (MM3Z24VC and MM3Z24VB) do not have specified RoHS or MSL compliance information in the provided data. Compliance verification with the manufacturer is required for applications with specific regulatory requirements.

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