BZX85B2V7-TAP Equivalent & Substitute Parts

Part Overview

The BZX85B2V7-TAP is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 2.7 V nominal with 1.3 W maximum power dissipation. This component is designed for voltage regulation and protection applications in electronic circuits. The device features a DO-204AL (DO-41) axial through-hole package and is qualified to AEC-Q101 automotive standards. The part maintains Active product status with 1135 units currently in stock. Substitute parts are identified when equivalent electrical performance is required but the original part is unavailable, when alternative packaging or supplier sourcing is necessary, or when design flexibility permits component interchange within specified parameter tolerances.

Substiute Parts

BZX85B2V7-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 1153BZX85B2V7-TAP Datasheet

Current PartRFQ

NZX2V7B,133

NXP USA Inc.In Stock: 61019NZX2V7B,133 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZX85B2V7-TAP is permissible when the following core electrical parameters are maintained within acceptable design margins:

Primary Substitution Criteria:

• Zener voltage nominal rating of 2.7 V
• Operating temperature range of -55°C to 175°C minimum
• Through-hole axial mounting configuration
• Power dissipation capability sufficient for application requirements

Secondary Compatibility Factors:

• Voltage tolerance (±2% preferred; ±4% acceptable in applications with wider design margins)
• Impedance characteristics (lower impedance values provide superior regulation performance)
• Reverse leakage current specifications (lower leakage preferred for precision applications)
• RoHS and REACH compliance status

The NZX2V7B,133 manufactured by NXP USA Inc. satisfies the primary substitution criteria with identical nominal zener voltage and operating temperature range. Both components are through-hole axial devices with active product status and full regulatory compliance. Differences in power rating, impedance, and tolerance are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

BZX85B2V7-TAP Selection Criteria: The BZX85B2V7-TAP is the primary choice for applications requiring AEC-Q101 automotive qualification, higher power dissipation capability (1.3 W), tighter voltage tolerance (±2%), and superior impedance characteristics (20 Ohms maximum). This component is suitable for automotive-grade voltage regulation circuits and protection applications where regulatory compliance and performance specifications are stringent. The part is actively manufactured and maintains substantial inventory availability.

NZX2V7B,133 Selection Criteria: The NZX2V7B,133 serves as a functional substitute in applications where power dissipation requirements do not exceed 500 mW and where the wider voltage tolerance (±4%) is acceptable. This component is appropriate for general-purpose voltage regulation and protection circuits in non-automotive applications. The substitute part maintains identical operating temperature range and through-hole mounting compatibility. The DO-35 package is physically smaller than the DO-41, which may present mechanical constraints in existing circuit board layouts designed for the larger package.

Compliance Considerations: Both components maintain Active product status and are manufactured by established semiconductor suppliers. The BZX85B2V7-TAP carries explicit ROHS3 compliance certification. Selection between these parts should be based on application-specific power requirements, tolerance specifications, and regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can the NZX2V7B,133 replace the BZX85B2V7-TAP in all applications?

A: The NZX2V7B,133 is functionally compatible for applications where power dissipation does not exceed 500 mW. The substitute part has identical nominal zener voltage (2.7 V) and operating temperature range (-55°C to 175°C). However, the wider voltage tolerance (±4% versus ±2%) and higher impedance (100 Ohms versus 20 Ohms) may affect regulation performance in precision circuits. The smaller DO-35 package may not fit existing through-hole layouts designed for DO-41 components.

Q: What are the key differences between the BZX85B2V7-TAP and NZX2V7B,133?

A: The primary differences are power rating (1.3 W versus 500 mW), voltage tolerance (±2% versus ±4%), impedance (20 Ohms versus 100 Ohms), and package size (DO-41 versus DO-35). The BZX85B2V7-TAP carries AEC-Q101 automotive qualification, while the NZX2V7B,133 is specified for general-purpose applications. Reverse leakage current differs significantly between the two devices.

Q: Are both parts RoHS compliant?

A: The BZX85B2V7-TAP is explicitly ROHS3 compliant. RoHS compliance status for the NZX2V7B,133 is not specified in the provided technical data.

Q: Can I use the NZX2V7B,133 in an automotive application?

A: The NZX2V7B,133 does not carry AEC-Q101 automotive qualification. Applications requiring automotive-grade components should use the BZX85B2V7-TAP to ensure compliance with automotive industry standards.

Q: What is the impact of different impedance values on circuit performance?

A: Impedance affects voltage regulation stability and transient response. The BZX85B2V7-TAP with 20 Ohms maximum impedance provides superior regulation performance compared to the NZX2V7B,133 with 100 Ohms maximum impedance. Applications requiring tight voltage regulation should prioritize the lower impedance device.

Q: Will the DO-35 package fit in a circuit board designed for DO-41?

A: The DO-35 package is physically smaller than the DO-41 package. While both are axial through-hole components, the smaller lead diameter and body dimensions of the DO-35 may not align with existing through-hole pad spacing and mechanical mounting provisions designed for DO-41 components. Physical verification is required before substitution.