BZT52C22S RRG Equivalent & Substitute Parts

Part Overview

The BZT52C22S RRG is a surface mount Zener diode manufactured by Taiwan Semiconductor Corporation, rated for 22 V nominal Zener voltage with 200 mW maximum power dissipation. This component operates across the temperature range of -65°C to 150°C and is packaged in the SOD-323F form factor. The part maintains Active product status and is RoHS3 compliant. 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.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	22	V
Tolerance	±5%	—
Power - Max	200	mW
Impedance (Max)	55	Ohms
Current - Reverse Leakage @ Vr	45	nA @ 15.4 V
Voltage - Forward (Vf) (Max) @ If	1	V @ 10 mA
Operating Temperature	-65 to 150	°C
Package / Case	SOD-323F	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution eligibility for Zener diodes is determined by matching the following critical parameters: nominal Zener voltage (22 V), maximum power rating (200 mW), package type (SOD-323F), mounting method (Surface Mount), and operating temperature range (-65°C to 150°C). Tolerance specifications (±2% or ±5%) represent acceptable variations in Zener voltage accuracy and do not prevent substitution when the application permits the specified tolerance band. All identified substitute parts meet or exceed these core electrical and mechanical requirements.

The substitute parts are grouped as follows:

Parametric Equivalents (Taiwan Semiconductor Corporation): BZT52B22S R9G and BZT52C22S R9G share identical electrical specifications with the main part, with the primary distinction being tolerance rating (±2% versus ±5%) and packaging format (Cut Tape & Digi-Reel versus standard reel configuration).

Direct Manufacturer Equivalent (Fairchild Semiconductor): MM3Z22VC provides electrical equivalence with a minor impedance variation (51 Ohms versus 55 Ohms maximum) and is supplied in bulk packaging.

Similar Manufacturer Part (onsemi): MM3Z22VB offers electrical equivalence with ±2% tolerance specification and impedance of 51 Ohms maximum, supplied on Tape & Reel.

Parameter Comparison

Parameter	BZT52C22S RRG	BZT52B22S R9G	BZT52C22S R9G	MM3Z22VC	MM3Z22VB
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	Taiwan Semiconductor	Fairchild Semiconductor	onsemi
Voltage - Zener (Nom)	22 V	22 V	22 V	22 V	22 V
Tolerance	±5%	±2%	±5%	±5%	±2%
Power - Max	200 mW	200 mW	200 mW	200 mW	200 mW
Impedance (Max)	55 Ohms	55 Ohms	55 Ohms	51 Ohms	51 Ohms
Current - Reverse Leakage @ Vr	45 nA @ 15.4 V	45 nA @ 15.4 V	45 nA @ 15.4 V	45 nA @ 15.4 V	45 nA @ 15.4 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 to 150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C
Package / Case	SOD-323F	SOD-323F	SOD-323F	SOD-323F	SOD-323F
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and are suitable for direct replacement in applications requiring a 22 V, 200 mW Zener diode in SOD-323F packaging. Selection among the substitute options is determined by tolerance requirements, manufacturer preference, and packaging format availability.

BZT52B22S R9G is selected when tighter voltage tolerance (±2%) is required while maintaining Taiwan Semiconductor Corporation sourcing. This part is available in Cut Tape & Digi-Reel packaging format.

BZT52C22S R9G provides identical specifications to the main part number with alternative packaging (Cut Tape & Digi-Reel) and is sourced from Taiwan Semiconductor Corporation.

MM3Z22VC (Fairchild Semiconductor) is selected when bulk packaging is preferred. The impedance specification of 51 Ohms (versus 55 Ohms) represents a tighter specification and does not restrict substitution.

MM3Z22VB (onsemi) is selected when ±2% tolerance specification is required with Tape & Reel packaging. The impedance specification of 51 Ohms is compatible with applications designed for the main part.

All substitute parts comply with RoHS3 requirements and maintain the same operating temperature range, reverse leakage characteristics, and forward voltage specifications as the primary part.

Frequently Asked Questions (FAQ)

Q: Can BZT52B22S R9G replace BZT52C22S RRG in all applications?

A: BZT52B22S R9G is electrically equivalent with the exception of tolerance specification. The BZT52B22S R9G features ±2% tolerance compared to ±5% for the BZT52C22S RRG. This tighter tolerance is compatible with all applications designed for the original part. The ±2% specification represents a subset of the ±5% tolerance band.

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

A: All parts share identical nominal Zener voltage (22 V), power rating (200 mW), and package type (SOD-323F). The Fairchild MM3Z22VC and onsemi MM3Z22VB parts specify maximum impedance of 51 Ohms compared to 55 Ohms for Taiwan Semiconductor parts. This represents a tighter specification and does not prevent substitution. Manufacturer selection is based on supply chain requirements and packaging format preference.

Q: Are there packaging differences between substitute parts?

A: Yes. BZT52C22S RRG is supplied in standard reel configuration. BZT52B22S R9G and BZT52C22S R9G are available in Cut Tape & Digi-Reel format. MM3Z22VC is supplied in bulk packaging. MM3Z22VB is supplied on Tape & Reel. Packaging selection depends on assembly process requirements and order quantity.

Q: Does the impedance difference between 55 Ohms and 51 Ohms affect substitution?

A: No. The impedance specification represents the maximum dynamic impedance at the Zener voltage. A lower maximum impedance (51 Ohms) is a tighter specification and is compatible with applications designed for 55 Ohms maximum impedance.

Q: Are all substitute parts RoHS3 compliant?

A: BZT52B22S R9G, BZT52C22S R9G, and MM3Z22VB are confirmed RoHS3 compliant. MM3Z22VC RoHS status is not specified in the provided data. Compliance verification with the component supplier is required for MM3Z22VC when RoHS3 certification is mandatory.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All substitute parts are packaged in SOD-323F and are surface mount components with identical pin configuration and footprint. Direct PCB substitution is supported without layout modification.

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