BZT52H-C27,115 Equivalent & Substitute Parts

Part Overview

The BZT52H-C27,115 is a 27 V Zener diode manufactured by Nexperia USA Inc., rated for 375 mW power dissipation in a surface mount SOD-123F package. This component is designed for voltage regulation and protection applications in automotive-grade circuits. The part maintains Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

BZT52H-C27,115

Nexperia USA Inc.In Stock: 3825BZT52H-C27,115 Datasheet

Current PartRFQ

BZT52H-B27,115

Nexperia USA Inc.In Stock: 9152BZT52H-B27,115 Datasheet

Parametric EquivalentRFQ

DDZ9711T-7

Diodes IncorporatedIn Stock: 635440DDZ9711T-7 Datasheet

SimilarRFQ

MM3Z27VB

onsemiIn Stock: 29245MM3Z27VB Datasheet

SimilarRFQ

MM3Z27VC

Fairchild SemiconductorIn Stock: 30370MM3Z27VC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZT52H-C27,115 is determined by the following critical parameters: nominal Zener voltage (27 V), maximum power dissipation capability, package form factor, operating temperature range, and automotive-grade qualification. Substitute parts are grouped into two categories based on electrical equivalence and mechanical compatibility.

Parametric Equivalent Category: Parts that maintain identical or superior electrical specifications within the same or compatible package footprint, allowing direct substitution without circuit redesign.

Similar Category: Parts that share the same nominal Zener voltage and operating temperature range but differ in power rating, package size, or tolerance specifications. These parts require circuit-level verification to confirm suitability for the intended application.

Key Parameters for Substitution Assessment:

• Nominal Zener voltage: 27 V (required match)
• Operating temperature range: -65°C to 150°C (required match)
• Package compatibility: SOD-123F (primary), SOD-323F (compatible with layout adjustment), SOD-523 (compatible with layout adjustment)
• Power dissipation: 375 mW (primary), 200 mW (acceptable for lower-power applications), 150 mW (acceptable for lower-power applications)
• Automotive qualification: AEC-Q101 (preferred for automotive applications)

Parameter Comparison

Engineering Selection Recommendations

BZT52H-B27,115 (Parametric Equivalent): This Nexperia part is a direct substitute for the BZT52H-C27,115. Both components share identical package (SOD-123F), power rating (375 mW), operating temperature range (-65°C to 150°C), and automotive qualification (AEC-Q101). The BZT52H-B27,115 offers improved tolerance specification (±2% versus ±5%), providing tighter voltage regulation. Both parts are ROHS3 compliant and maintain equivalent electrical performance. This part is suitable for direct replacement in existing designs without layout modification.

DDZ9711T-7 (Similar Category): This Diodes Incorporated part maintains the 27 V nominal Zener voltage and -65°C to 150°C operating temperature range. The primary distinction is reduced power dissipation (150 mW versus 375 mW) and different package form factor (SOD-523 versus SOD-123F). This part is suitable for applications where power dissipation requirements are lower and PCB layout accommodates the SOD-523 package. ROHS3 compliance is maintained.

MM3Z27VB (Similar Category): This onsemi part provides 27 V Zener voltage with ±2% tolerance and -65°C to 150°C operating temperature. Power dissipation is rated at 200 mW with SOD-323F package form factor. The impedance specification (75 Ohms) differs from the primary part (40 Ohms). This part is suitable for lower-power applications where the SOD-323F package footprint is acceptable. ROHS3 compliance is maintained.

MM3Z27VC (Similar Category): This Fairchild Semiconductor part provides 27 V Zener voltage with ±5% tolerance and -65°C to 150°C operating temperature. Power dissipation is rated at 200 mW with SOD-323F package form factor. The impedance specification (75 Ohms) differs from the primary part (40 Ohms). This part is suitable for lower-power applications where the SOD-323F package footprint is acceptable. ROHS3 compliance is maintained.

Frequently Asked Questions (FAQ)

Q: Can BZT52H-B27,115 be used as a direct replacement for BZT52H-C27,115?

A: Yes. Both parts are manufactured by Nexperia USA Inc., share identical SOD-123F packaging, 375 mW power rating, and -65°C to 150°C operating temperature range. Both hold AEC-Q101 automotive qualification. The BZT52H-B27,115 features tighter tolerance (±2% versus ±5%), making it suitable for direct substitution without circuit redesign or PCB layout modification.

Q: What are the limitations of using DDZ9711T-7 as a substitute?

A: The DDZ9711T-7 maintains the 27 V nominal Zener voltage and operating temperature range but has reduced power dissipation (150 mW versus 375 mW). The package form factor differs (SOD-523 versus SOD-123F), requiring PCB layout adjustment. Applications requiring the full 375 mW power dissipation capability must not use this part. Verify that the application power requirements do not exceed 150 mW before selection.

Q: Are MM3Z27VB and MM3Z27VC interchangeable with the BZT52H-C27,115?

A: Both MM3Z27VB and MM3Z27VC share the 27 V nominal Zener voltage and -65°C to 150°C operating temperature range. However, both parts have reduced power dissipation (200 mW versus 375 mW) and different package form factor (SOD-323F versus SOD-123F). These parts are suitable only for applications where power dissipation does not exceed 200 mW and where the SOD-323F package footprint is acceptable. PCB layout modification is required.

Q: What is the significance of tolerance differences between substitute parts?

A: Tolerance specifications define the allowable deviation from the nominal Zener voltage. The BZT52H-C27,115 and DDZ9711T-7 specify ±5% tolerance, while BZT52H-B27,115, MM3Z27VB specify ±2% tolerance, and MM3Z27VC specifies ±5% tolerance. Tighter tolerance (±2%) provides more precise voltage regulation. Applications requiring strict voltage regulation benefit from parts with ±2% tolerance. Applications with broader voltage tolerance requirements can use ±5% parts.

Q: Do all substitute parts maintain automotive qualification?

A: The BZT52H-C27,115 and BZT52H-B27,115 both hold AEC-Q101 automotive qualification. The DDZ9711T-7, MM3Z27VB, and MM3Z27VC do not list automotive qualification in the provided specifications. For automotive applications requiring AEC-Q101 compliance, only BZT52H-B27,115 is suitable as a substitute.

Q: What package considerations apply when selecting substitute parts?

A: The BZT52H-C27,115 uses SOD-123F package. The BZT52H-B27,115 also uses SOD-123F, allowing direct substitution without layout modification. The DDZ9711T-7 uses SOD-523 package, and MM3Z27VB and MM3Z27VC use SOD-323F package. Different package form factors require PCB layout redesign, including pad pattern modification and trace routing adjustment. Verify PCB layout compatibility before selecting parts with different package specifications.

Q: How do impedance differences affect circuit performance?

A: The BZT52H-C27,115 and BZT52H-B27,115 specify 40 Ohms maximum impedance. The MM3Z27VB and MM3Z27VC specify 75 Ohms maximum impedance. Higher impedance results in increased voltage variation across the Zener diode under changing load conditions. Applications requiring stable voltage regulation with minimal ripple benefit from lower impedance specifications. Verify that the application circuit can tolerate the impedance characteristics of the selected substitute part.