BZT52B56S-TP Equivalent & Substitute Parts

Part Overview

The BZT52B56S-TP is a Zener diode rated at 56 V nominal voltage with 200 mW maximum power dissipation, manufactured by Micro Commercial Co in the SOD-323 surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing production and maintenance applications. The substitute part maintains identical electrical specifications while offering improved product availability through active manufacturing status.

Substiute Parts

BZT52B56S-TP

Micro Commercial CoIn Stock: 908BZT52B56S-TP Datasheet

Current PartRFQ

BZT52B56JS-TP

Micro Commercial CoIn Stock: 1207BZT52B56JS-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZT52B56S-TP with the BZT52B56JS-TP is based on electrical and mechanical parameter equivalence. Both parts share the following critical specifications:

• Zener voltage: 56 V nominal with ±2% tolerance
• Power rating: 200 mW maximum
• Impedance: 135 Ohms maximum
• Reverse leakage current: 100 nA @ 42 V
• Forward voltage: 900 mV @ 10 mA
• Package: SOD-323 surface mount
• RoHS3 compliance
• MSL Level 1 (Unlimited moisture sensitivity)

The primary distinction between these parts is product status and packaging format. The BZT52B56JS-TP is actively manufactured and supplied in Tape & Reel format, whereas the BZT52B56S-TP is obsolete. The operating temperature range differs slightly, with the substitute rated to 150°C versus 175°C for the original part.

Parameter Comparison

Engineering Selection Recommendations

The BZT52B56JS-TP is the direct equivalent for the obsolete BZT52B56S-TP based on electrical parameter equivalence and identical package specifications. Selection of the substitute part is appropriate for applications where the operating temperature requirement does not exceed 150°C. For applications requiring operation above 150°C and up to 175°C, the original part specification must be retained or alternative sources evaluated.

The BZT52B56JS-TP carries active product status with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and regulatory compliance. The Tape & Reel packaging format of the substitute part is standard for high-volume surface mount assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the BZT52B56JS-TP directly replace the BZT52B56S-TP in existing designs?

A: Yes, for applications operating within the -55°C to 150°C temperature range. Both parts share identical electrical specifications, package geometry (SOD-323), and mounting type (surface mount). If your application requires operation above 150°C, the original part specification must be retained.

Q: What is the difference between the two part numbers?

A: The primary differences are product status and packaging format. The BZT52B56S-TP is obsolete, while the BZT52B56JS-TP is actively manufactured. The substitute is supplied in Tape & Reel format, which is standard for automated assembly. All electrical parameters and package dimensions are identical.

Q: Are both parts RoHS compliant?

A: Yes, both the BZT52B56S-TP and BZT52B56JS-TP are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of the operating temperature range difference?

A: The BZT52B56S-TP is rated to 175°C junction temperature, while the BZT52B56JS-TP is rated to 150°C. For applications operating within the 150°C to 175°C range, the original part specification must be used. For all other applications, the substitute part is fully compatible.

Q: Does the Tape & Reel packaging affect compatibility?

A: No. Tape & Reel is a packaging and delivery format for automated assembly. The actual component package (SOD-323) and electrical specifications remain identical. This format is standard for surface mount production environments.

Q: Are the electrical characteristics identical between the two parts?

A: Yes. Both parts have identical Zener voltage (56 V), tolerance (±2%), power rating (200 mW), impedance (135 Ohms), reverse leakage current (100 nA @ 42 V), and forward voltage (900 mV @ 10 mA).