BZT52B27S-TP Equivalent & Substitute Parts

Part Overview

The BZT52B27S-TP is a Zener diode rated at 27 V nominal voltage with 200 mW maximum power dissipation in a surface mount SOD-323 package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement continuity. The substitute part BZT52B27JS-TP maintains the same base electrical specifications while offering active product status and improved availability.

Substiute Parts

BZT52B27S-TP

Micro Commercial CoIn Stock: 808BZT52B27S-TP Datasheet

Current PartRFQ

BZT52B27JS-TP

Micro Commercial CoIn Stock: 890BZT52B27JS-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZT52B27S-TP is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage rating: 27 V nominal
• Tolerance: ±2%
• Maximum power dissipation: 200 mW
• Package type: SOD-323 surface mount
• RoHS3 compliance
• Moisture sensitivity level: 1

Secondary Compatibility Parameters:

• Forward voltage: 900 mV @ 10 mA
• Operating temperature range capability
• Impedance characteristics

The BZT52B27JS-TP qualifies as a direct substitute based on matching all primary criteria. This part maintains identical zener voltage, tolerance, power rating, and package configuration. The substitute exhibits improved impedance characteristics (75 Ohms vs. 80 Ohms maximum) and lower reverse leakage current, representing enhanced performance within the same functional specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BZT52B27JS-TP

The BZT52B27JS-TP is the direct substitute for the obsolete BZT52B27S-TP. This part maintains functional equivalence across all critical electrical parameters while offering the following advantages:

• Active product status ensures long-term availability and supply chain continuity
• ROHS3 compliance and unlimited moisture sensitivity rating match the original specification
• Improved impedance and reverse leakage characteristics provide enhanced performance margins
• Identical package configuration (SOD-323) and mounting type enable direct PCB compatibility
• Higher inventory availability (864 Pcs vs. 767 Pcs) supports procurement requirements

Operating Temperature Consideration:

The substitute part operates to a maximum junction temperature of 150°C compared to 175°C for the original. Applications requiring sustained operation above 150°C require thermal analysis to confirm compatibility. For standard operating conditions within -55°C to 150°C, the substitute provides full functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can BZT52B27JS-TP be used as a direct replacement for BZT52B27S-TP?

A: Yes. The BZT52B27JS-TP is a direct substitute. Both parts share identical zener voltage (27 V), tolerance (±2%), power rating (200 mW), and SOD-323 package configuration. The substitute exhibits improved electrical characteristics with lower impedance and reverse leakage current.

Q: What is the primary reason for substitution?

A: The BZT52B27S-TP is classified as obsolete. The BZT52B27JS-TP provides active product status with equivalent functionality and superior performance characteristics, ensuring design continuity and supply availability.

Q: Are there any temperature limitations when using the substitute?

A: The substitute operates across -55°C to 150°C junction temperature, compared to -55°C to 175°C for the original. Applications operating continuously above 150°C require thermal verification. Standard operating conditions within this range present no compatibility issues.

Q: Is the package configuration identical?

A: Yes. Both parts use the SC-76, SOD-323 surface mount package. PCB footprints and assembly processes require no modification.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both BZT52B27S-TP and BZT52B27JS-TP are ROHS3 compliant with moisture sensitivity level 1 (unlimited), meeting current environmental and regulatory standards.

Q: What is the difference in impedance between the two parts?

A: The BZT52B27JS-TP has a maximum impedance of 75 Ohms compared to 80 Ohms for the original. This represents improved performance and does not affect substitution compatibility.

Q: How does reverse leakage current compare?

A: The substitute exhibits lower reverse leakage current (45 nA @ 18.9 V) compared to the original (100 nA @ 20 V). This improvement enhances circuit performance and reliability.