TZMB47-GS08 Equivalent & Substitute Parts

Part Overview

The TZMB47-GS08 is a Zener diode rated at 47 V nominal voltage with 500 mW power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates across the temperature range of -65°C to 175°C and is qualified to AEC-Q101 automotive standards. The part is currently active in production with 3900 units in stock. Equivalent and substitute parts are identified when they share identical or compatible electrical specifications and mechanical packaging, enabling direct replacement in circuit applications without design modification.

Substiute Parts

TZMB47-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 4007TZMB47-GS08 Datasheet

Current PartRFQ

BZV55-B47,115

Nexperia USA Inc.In Stock: 3040BZV55-B47,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TZMB47-GS08 is determined by the following critical parameters:

• Zener Voltage (Vz): Must be 47 V nominal with ±2% tolerance
• Power Dissipation: Must be rated at 500 mW maximum
• Package Type: Must be DO-213AC, MINI-MELF, or SOD-80 surface mount
• Mounting Configuration: Must be surface mount compatible
• Compliance Standards: Must maintain RoHS3 compliance and automotive-grade qualification where applicable

The BZV55-B47,115 manufactured by Nexperia USA Inc. meets all substitution criteria. Both parts share identical zener voltage, tolerance, power rating, and package specifications. The substitute part maintains surface mount compatibility and RoHS3 compliance, enabling direct functional replacement in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The BZV55-B47,115 is a direct functional substitute for the TZMB47-GS08 based on matching electrical specifications and package compatibility. Both parts are active products with current manufacturing status and full RoHS3 compliance. The substitute part provides an extended operating temperature range (-65°C to 200°C versus -65°C to 175°C), which offers additional thermal margin in applications requiring higher temperature operation. Both components are surface mount devices in identical package configurations, permitting direct PCB layout compatibility without redesign.

Selection between these parts depends on application-specific requirements regarding temperature range, impedance characteristics, and reverse leakage specifications. The TZMB47-GS08 carries automotive AEC-Q101 qualification, while the BZV55-B47,115 is specified as a general-purpose component. Applications requiring automotive-grade certification should retain the original TZMB47-GS08 part number.

Frequently Asked Questions (FAQ)

Q: Can the BZV55-B47,115 replace the TZMB47-GS08 in all applications?

A: The BZV55-B47,115 is electrically and mechanically compatible with the TZMB47-GS08 for applications where automotive AEC-Q101 qualification is not a contractual or regulatory requirement. Both parts share identical zener voltage, tolerance, power rating, and surface mount package specifications. Applications requiring automotive-grade certification must use the TZMB47-GS08.

Q: What is the significance of the impedance difference between these parts?

A: The TZMB47-GS08 specifies maximum impedance of 110 Ohms, while the BZV55-B47,115 specifies 170 Ohms. Impedance affects transient response and noise filtering characteristics. The substitute part's higher impedance is acceptable in applications where the original impedance specification is not a critical design constraint.

Q: Are the package dimensions identical between these parts?

A: Both parts use DO-213AC, MINI-MELF, and SOD-80 package designations, indicating identical physical dimensions and lead configurations. Direct PCB footprint compatibility is confirmed.

Q: Does the extended temperature range of the BZV55-B47,115 affect substitution suitability?

A: The BZV55-B47,115 operates to 200°C junction temperature compared to 175°C for the TZMB47-GS08. The extended range does not create incompatibility; it provides additional thermal margin. Applications operating within the original -65°C to 175°C range experience no adverse effects from the substitute part's wider specification.

Q: What is the difference in reverse leakage current between these parts?

A: The TZMB47-GS08 specifies 100 nA maximum reverse leakage at 36 V, while the BZV55-B47,115 specifies 50 nA at 32.9 V. The substitute part exhibits lower leakage current, which is beneficial for applications sensitive to standby power consumption or requiring minimal reverse current.

Q: Are both parts RoHS compliant?

A: Both the TZMB47-GS08 and BZV55-B47,115 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.