BZT52B22S-TP Equivalent & Substitute Parts

Part Overview

The BZT52B22S-TP is a Zener diode rated at 22 V nominal voltage with 200 mW maximum power dissipation in a surface mount SOD-323 package. Manufactured by Micro Commercial Co, this component is classified as obsolete product status. Due to its obsolete designation, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications. The substitute part BZT52B22JS-TP provides functional equivalence with active product status from the same manufacturer.

Substiute Parts

BZT52B22S-TP

Micro Commercial CoIn Stock: 962BZT52B22S-TP Datasheet

Current PartRFQ

BZT52B22JS-TP

Micro Commercial CoIn Stock: 937BZT52B22JS-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZT52B22S-TP is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage rating: 22 V nominal
• Tolerance: ±2%
• Maximum power dissipation: 200 mW
• Package type: SOD-323 surface mount
• Forward voltage: 900 mV maximum at 10 mA

Secondary Compatibility Parameters:

• Impedance (Zzt): Maximum 55 Ohms (main part) to 51 Ohms (substitute part)
• Reverse leakage current specifications
• Operating temperature range
• RoHS3 compliance

The BZT52B22JS-TP meets all primary substitution criteria and maintains electrical performance within acceptable ranges. The substitute part operates across a reduced temperature range (-55°C to 150°C versus -55°C to 175°C) and exhibits lower impedance and reverse leakage characteristics, both favorable for circuit performance.

Parameter Comparison

Engineering Selection Recommendations

BZT52B22JS-TP as Primary Substitute:

The BZT52B22JS-TP is the direct substitute for the obsolete BZT52B22S-TP. Both components share identical electrical specifications for zener voltage, tolerance, power rating, and forward voltage characteristics. The substitute part is manufactured by the same supplier (Micro Commercial Co) and maintains the same base product number (BZT52B22), confirming functional equivalence.

Compliance and Certification:

Both the main part and substitute are ROHS3 compliant and carry identical moisture sensitivity levels (MSL 1 - Unlimited). The substitute part holds active product status, ensuring long-term availability and supply chain continuity.

Temperature Range Consideration:

The substitute part operates across a reduced temperature range (maximum 150°C junction temperature versus 175°C for the main part). Applications requiring operation at temperatures exceeding 150°C require design review to confirm compatibility with the substitute part's thermal specifications.

Electrical Performance:

The substitute part exhibits improved electrical characteristics with lower impedance (51 Ohms versus 55 Ohms) and reduced reverse leakage current (45 nA versus 100 nA). These characteristics provide equal or superior performance in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can BZT52B22JS-TP directly replace BZT52B22S-TP in existing designs?

A: Yes. Both parts share identical zener voltage (22 V), tolerance (±2%), power rating (200 mW), and package type (SOD-323). The substitute part is electrically compatible for standard circuit applications operating within the -55°C to 150°C temperature range.

Q: What is the difference between the packaging designations?

A: BZT52B22S-TP uses standard packaging, while BZT52B22JS-TP is supplied in Tape & Reel (TR) format. Both use the same SOD-323 surface mount package. The packaging difference affects supply format and handling but not electrical performance or physical footprint.

Q: Are there any thermal limitations when substituting?

A: The substitute part (BZT52B22JS-TP) has a maximum junction temperature of 150°C, compared to 175°C for the main part. Applications requiring sustained operation above 150°C require verification that the substitute part's thermal rating is adequate for the specific circuit environment.

Q: Do both parts meet the same compliance standards?

A: Yes. Both BZT52B22S-TP and BZT52B22JS-TP are ROHS3 compliant with identical moisture sensitivity levels (MSL 1). Both carry the same ECCN (EAR99) and HTSUS classifications.

Q: Why is the main part listed as obsolete?

A: The BZT52B22S-TP is classified as obsolete product status. The BZT52B22JS-TP, with active product status from the same manufacturer, provides continued access to equivalent functionality and ensures supply chain continuity for new designs and production requirements.

Q: What are the impedance differences and do they affect circuit performance?

A: The substitute part has lower impedance (51 Ohms versus 55 Ohms). Lower impedance generally provides improved voltage regulation characteristics and faster transient response in zener diode applications. This represents an improvement over the main part specification.