BZV55C12-TP Equivalent & Substitute Parts

Part Overview

The BZV55C12-TP is a Zener diode rated at 12 V nominal voltage with 500 mW power dissipation, manufactured by Micro Commercial Co in a Surface Mount Mini MELF package (DO-213AC/SOD-80). This component is classified as Obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical equivalence in voltage regulation characteristics while accommodating package and power rating variations based on application requirements.

Substiute Parts

BZV55C12-TP

Micro Commercial CoIn Stock: 21998BZV55C12-TP Datasheet

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BZT52C12-TP

Micro Commercial CoIn Stock: 93385BZT52C12-TP Datasheet

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TZMC12-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 19025TZMC12-GS08 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BZV55C12-TP are selected based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Voltage - Zener (Nom): 12 V (exact match required)
• Tolerance: ±5% (exact match required)
• Mounting Type: Surface Mount (required)
• RoHS Status: ROHS3 Compliant (required)
• Moisture Sensitivity Level: 1 (Unlimited) (required)

Secondary Compatibility Factors:

• Power - Max: 500 mW (primary part specification; substitutes may vary based on application thermal requirements)
• Package / Case: DO-213AC/MINI-MELF/SOD-80 (physical form factor; alternative packages acceptable if board layout permits)
• Current - Reverse Leakage @ Vr: 100 nA @ 9.1 V (leakage characteristics)
• Voltage - Forward (Max): 1.5 V @ 200 mA (forward conduction characteristics)
• Operating Temperature Range: -55°C to 150°C (thermal operating envelope)

Substitutes maintain the 12 V zener voltage specification and ±5% tolerance while accommodating variations in power rating, package form factor, and impedance within acceptable design margins.

Parameter Comparison

Engineering Selection Recommendations

BZT52C12-TP (Micro Commercial Co)

The BZT52C12-TP maintains identical zener voltage (12 V) and tolerance (±5%) specifications with Active product status. This substitute is suitable for applications where power dissipation requirements do not exceed 200 mW. The SOD-123 package requires board layout modification compared to the Mini MELF form factor. Operating temperature range extends to -65°C, providing enhanced low-temperature performance. ROHS3 compliance and MSL 1 rating are maintained. This substitute is appropriate for lower-power circuit implementations.

TZMC12-GS08 (Vishay General Semiconductor)

The TZMC12-GS08 provides direct electrical equivalence with 12 V zener voltage, ±5% tolerance, and 500 mW power rating matching the original BZV55C12-TP specification. Package compatibility is maintained with DO-213AC/MINI-MELF/SOD-80 form factor, eliminating board layout modifications. Active product status ensures long-term availability. AEC-Q101 automotive qualification provides additional reliability assurance for demanding applications. ROHS3 compliance and MSL 1 rating are maintained. This substitute is appropriate for applications requiring full electrical and mechanical equivalence.

Frequently Asked Questions (FAQ)

Q: Can BZT52C12-TP replace BZV55C12-TP in all applications?

A: The BZT52C12-TP maintains the 12 V zener voltage and ±5% tolerance required for voltage regulation equivalence. However, the 200 mW power rating is 60% lower than the original 500 mW specification. Substitution is valid only for applications where circuit power dissipation does not exceed 200 mW. The SOD-123 package differs from the Mini MELF form factor, requiring board layout verification. Thermal management and current handling must be re-evaluated for the specific application.

Q: What is the primary advantage of TZMC12-GS08 as a substitute?

A: The TZMC12-GS08 provides complete electrical and mechanical equivalence to the BZV55C12-TP. The 500 mW power rating matches the original specification, and the DO-213AC/MINI-MELF/SOD-80 package maintains identical board layout compatibility. Active product status ensures availability, and AEC-Q101 automotive qualification provides additional reliability documentation for regulated applications.

Q: Are there package compatibility concerns with these substitutes?

A: The TZMC12-GS08 maintains the Mini MELF package form factor (DO-213AC/SOD-80), requiring no board layout modifications. The BZT52C12-TP uses SOD-123 packaging, which has different physical dimensions and footprint. Board layout verification is required if substituting with BZT52C12-TP to confirm component placement and thermal clearance compatibility.

Q: Do all substitutes meet the same compliance requirements?

A: All three parts (BZV55C12-TP, BZT52C12-TP, and TZMC12-GS08) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The TZMC12-GS08 includes AEC-Q101 automotive qualification, providing additional quality and reliability documentation. All parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: What is the impact of impedance differences between substitutes?

A: The BZV55C12-TP specifies 20 Ohms maximum impedance, while BZT52C12-TP specifies 25 Ohms. Impedance affects voltage regulation stability and transient response characteristics. Applications with stringent voltage regulation requirements should evaluate impedance specifications against circuit design margins. The TZMC12-GS08 impedance specification is not provided in available documentation.

Q: Can operating temperature range differences affect substitution decisions?

A: The BZV55C12-TP operates from -55°C to 150°C, while BZT52C12-TP extends to -65°C. The TZMC12-GS08 operating temperature range is not specified. For applications requiring operation below -55°C, the BZT52C12-TP provides extended low-temperature capability. Applications operating within the -55°C to 150°C envelope are compatible with all three parts.