BZT52C22T-TP Equivalent & Substitute Parts

Part Overview

The BZT52C22T-TP is a 22 V, 100 mW Zener diode manufactured by Micro Commercial Co in SOD-523 surface mount packaging. This component is classified as Active and maintains full RoHS3 compliance with unlimited moisture sensitivity rating. The part is supplied in Tape & Reel packaging format with 6832 units currently in stock inventory.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining the same nominal voltage rating, operating temperature range, and surface mount compatibility. Alternative sources become necessary due to supply chain considerations, manufacturing availability, or design requirements for enhanced performance margins.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	22	V
Power - Maximum	100	mW
Tolerance	±5%	-
Impedance (Maximum)	55	Ohms
Current - Reverse Leakage @ 15.4 V	100	nA
Voltage - Forward (Maximum) @ 10 mA	900	mV
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount	-
Package / Case	SOD-523	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the BZT52C22T-TP is determined by the following critical parameters:

Primary Substitution Criteria:

Nominal Zener voltage of 22 V
Operating temperature range of -65°C to 150°C
Surface mount packaging (SOD-523 or compatible)
RoHS3 compliance
Unlimited moisture sensitivity level (MSL 1)

Secondary Compatibility Factors:

Tolerance specification (±5% or tighter)
Maximum impedance rating (55 Ohms or lower)
Reverse leakage current characteristics
Forward voltage characteristics

Parts are grouped as direct substitutes when they maintain the 22 V nominal rating and surface mount form factor. Parts with higher power ratings (300 mW or 550 mW) are functionally compatible as they provide enhanced thermal performance while maintaining electrical specifications. Parts with improved tolerance (±2%) or lower impedance values provide superior performance margins.

Parameter Comparison

Parameter	BZT52C22T-TP (Main)	BZT52C22T-7	BZX585-B22,115	BZX585-C22,115	BZX84J-B22,115
Manufacturer	Micro Commercial Co	Diodes Incorporated	Nexperia USA Inc.	Nexperia USA Inc.	NXP USA Inc.
Voltage - Zener (Nom)	22 V	22 V	22 V	22 V	22 V
Tolerance	±5%	±6%	±2%	±5%	±2%
Power - Max	100 mW	300 mW	300 mW	300 mW	550 mW
Impedance (Max)	55 Ohms	55 Ohms	55 Ohms	55 Ohms	25 Ohms
Current - Reverse Leakage @ 15.4 V	100 nA	100 nA	50 nA	50 nA	50 nA
Voltage - Forward (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	1.1 V @ 100 mA	1.1 V @ 100 mA	1.1 V @ 100 mA
Operating Temperature	-65 to 150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-523	SOD-523	SOD-523	SOD-523	SOD-323F
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	-	-	Yes (AEC-Q100)	Yes (AEC-Q100)	Yes (AEC-Q101)

Engineering Selection Recommendations

BZT52C22T-7 (Diodes Incorporated)

This substitute maintains identical SOD-523 packaging and operating temperature specifications. The 300 mW power rating provides a 3× thermal margin over the original 100 mW specification. Tolerance specification of ±6% remains within acceptable substitution parameters. Product status is Active with full RoHS3 compliance. This part is suitable for direct replacement in non-automotive applications where enhanced thermal performance is beneficial.

BZX585-B22,115 (Nexperia USA Inc.)

This part offers improved tolerance specification (±2% versus ±5%) and reduced reverse leakage current (50 nA versus 100 nA). The 300 mW power rating provides thermal margin. Automotive-grade qualification (AEC-Q100) and SOD-523 packaging ensure compatibility. This substitute is appropriate for applications requiring tighter voltage tolerance and automotive-qualified components.

BZX585-C22,115 (Nexperia USA Inc.)

This substitute maintains the ±5% tolerance specification matching the original part. The 300 mW power rating provides thermal enhancement. Automotive-grade qualification (AEC-Q100) and SOD-523 packaging provide direct compatibility. This part is suitable for applications requiring automotive qualification while maintaining identical tolerance specifications. Inventory availability is highest among substitutes at 21,671 units.

BZX84J-B22,115 (NXP USA Inc.)

This part features the highest power rating (550 mW) and lowest impedance (25 Ohms), providing superior performance margins. Automotive-grade qualification (AEC-Q101) exceeds standard requirements. The SOD-323F package differs from the original SOD-523, requiring PCB layout modification. This substitute is appropriate for applications requiring enhanced thermal performance and automotive qualification where package footprint change is acceptable.

Frequently Asked Questions (FAQ)

Q: Can BZT52C22T-7 be used as a direct replacement for BZT52C22T-TP?

A: Yes. Both parts maintain 22 V nominal voltage, SOD-523 packaging, and -65°C to 150°C operating temperature range. The BZT52C22T-7 provides 300 mW power rating versus 100 mW, offering enhanced thermal performance. Tolerance specification of ±6% is acceptable for substitution purposes.

Q: What is the difference between BZX585-B22,115 and BZX585-C22,115?

A: Both parts are manufactured by Nexperia USA Inc. in SOD-523 packaging with 300 mW power rating and automotive qualification. The primary difference is tolerance specification: BZX585-B22,115 offers ±2% tolerance with improved reverse leakage characteristics (50 nA), while BZX585-C22,115 maintains ±5% tolerance matching the original part specification.

Q: Why does BZX84J-B22,115 have a different package designation?

A: BZX84J-B22,115 uses SOD-323F packaging instead of SOD-523. This represents a different physical form factor with higher power dissipation capability (550 mW). PCB layout and footprint modifications are required for this substitution. The smaller SOD-323F package may not be suitable for all applications.

Q: Are the Nexperia parts automotive-qualified?

A: Yes. Both BZX585-B22,115 and BZX585-C22,115 carry automotive-grade designation with AEC-Q100 qualification. These parts are suitable for automotive applications requiring qualified component status.

Q: What is the significance of lower impedance in BZX84J-B22,115?

A: The BZX84J-B22,115 features 25 Ohms maximum impedance compared to 55 Ohms in other substitutes. Lower impedance provides improved voltage regulation characteristics and faster transient response. This parameter is relevant for applications requiring superior dynamic performance.

Q: Can I substitute a 300 mW part for a 100 mW part?

A: Yes. Higher power rating parts (BZT52C22T-7, BZX585-B22,115, BZX585-C22,115) provide thermal margin and are functionally compatible. The 100 mW specification represents the maximum power dissipation limit; operating at lower power levels is acceptable with higher-rated components.

Q: What does RoHS3 compliance mean for these parts?

A: RoHS3 compliance indicates conformance to Restriction of Hazardous Substances Directive 3. All listed parts maintain ROHS3 compliance, ensuring compatibility with environmental and regulatory requirements for electronic component manufacturing and use.

Q: Is moisture sensitivity a concern for these Zener diodes?

A: All listed parts carry MSL 1 (Unlimited) moisture sensitivity level, indicating no moisture sensitivity restrictions. These components do not require special moisture control during storage, handling, or assembly processes.

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