ZC2811ETA Equivalent & Substitute Parts

Part Overview

The ZC2811ETA is a Schottky diode manufactured by Diodes Incorporated, rated for 15 V DC reverse voltage and 20 mA average rectified current in a SOT-23-3 surface mount package. This component is classified as obsolete, indicating discontinuation from the manufacturer. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and ongoing system support.

Substiute Parts

ZC2811ETA

Diodes IncorporatedIn Stock: 1521ZC2811ETA Datasheet

Current PartRFQ

BAT54TA

Diodes IncorporatedIn Stock: 3437BAT54TA Datasheet

DirectRFQ

BAS40E6327HTSA1

Infineon TechnologiesIn Stock: 2169BAS40E6327HTSA1 Datasheet

MFR RecommendedRFQ

BAS40E6433HTMA1

Infineon TechnologiesIn Stock: 872BAS40E6433HTMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZC2811ETA is determined by electrical and mechanical compatibility within the following criteria:

Electrical Compatibility Requirements:

• Voltage - DC Reverse (Vr) rating must equal or exceed 15 V
• Current - Average Rectified (Io) rating must equal or exceed 20 mA
• Technology classification must be Schottky
• Forward voltage characteristics must be compatible with circuit operation

Mechanical Compatibility Requirements:

• Package / Case must be TO-236-3, SC-59, or SOT-23-3
• Mounting Type must be Surface Mount
• Operating Temperature - Junction range must encompass or match the application requirements

Compliance Considerations:

• RoHS compliance status and REACH classification affect suitability for regulated applications
• Product Status (Active vs. Obsolete) indicates ongoing manufacturer support and availability

The substitute parts identified—BAT54TA, BAS40E6327HTSA1, and BAS40E6433HTMA1—meet or exceed all electrical and mechanical parameters of the ZC2811ETA while offering enhanced ratings and active product status.

Parameter Comparison

Engineering Selection Recommendations

BAT54TA (Diodes Incorporated)

The BAT54TA provides a direct manufacturer alternative from Diodes Incorporated with identical SOT-23-3 packaging. This part exceeds the ZC2811ETA electrical specifications with 30 V reverse voltage rating and 200 mA current capacity. The BAT54TA is classified as Active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The maximum operating temperature is limited to 125°C, which is lower than the ZC2811ETA range of -55°C to 150°C. This limitation must be evaluated against specific application temperature requirements.

BAS40E6327HTSA1 (Infineon Technologies)

The BAS40E6327HTSA1 is a manufacturer-recommended substitute from Infineon Technologies, offering 40 V reverse voltage and 120 mA current capacity in the same SOT-23-3 package. This part maintains the full operating temperature range of -55°C to 150°C and carries ROHS3 compliance. Active product status ensures ongoing availability. The forward voltage specification of 1 V @ 40 mA differs from the ZC2811ETA measurement point, requiring circuit-level evaluation for applications sensitive to forward voltage characteristics.

BAS40E6433HTMA1 (Infineon Technologies)

The BAS40E6433HTMA1 is functionally equivalent to the BAS40E6327HTSA1, offering identical electrical specifications and the same SOT-23-3 package. This part maintains the full operating temperature range and ROHS3 compliance with Active product status. Selection between BAS40E6327HTSA1 and BAS40E6433HTMA1 is determined by packaging format and supplier availability, as both parts meet all electrical and mechanical requirements.

Frequently Asked Questions (FAQ)

Q: Can the BAT54TA directly replace the ZC2811ETA in all applications?

A: The BAT54TA meets all electrical and mechanical compatibility requirements for the ZC2811ETA. However, the maximum operating temperature of 125°C is lower than the ZC2811ETA range of -55°C to 150°C. Applications requiring operation above 125°C must use BAS40E6327HTSA1 or BAS40E6433HTMA1 instead.

Q: What is the difference between BAS40E6327HTSA1 and BAS40E6433HTMA1?

A: Both parts are functionally identical with the same electrical specifications and SOT-23-3 package. The difference lies in packaging format and supplier designation. Selection is based on procurement availability and packaging requirements (Tape & Reel format).

Q: Are all substitute parts RoHS compliant?

A: Yes. BAT54TA, BAS40E6327HTSA1, and BAS40E6433HTMA1 are all ROHS3 compliant. The original ZC2811ETA is RoHS non-compliant, making substitution necessary for applications requiring RoHS compliance.

Q: Do the substitute parts have the same package footprint as the ZC2811ETA?

A: Yes. All substitute parts use the TO-236-3, SC-59, or SOT-23-3 package designation with surface mount mounting type, ensuring mechanical compatibility with existing PCB designs.

Q: Why do the substitute parts have higher reverse voltage ratings?

A: The substitute parts (30 V and 40 V) exceed the ZC2811ETA specification (15 V) while maintaining the same package size. Higher voltage ratings provide design margin and do not negatively impact circuit operation when the applied voltage remains within the original 15 V specification.

Q: What is the impact of higher reverse leakage current in substitute parts?

A: The ZC2811ETA specifies 100 nA @ 10 V, while substitute parts specify 1 µA to 4 µA at higher voltages. For applications sensitive to leakage current, circuit-level analysis is required to confirm acceptable performance. The higher leakage in substitute parts is typical for higher voltage-rated Schottky diodes.

Q: Can I use BAS40E6327HTSA1 or BAS40E6433HTMA1 in place of BAT54TA?

A: Yes. Both BAS40 variants exceed the BAT54TA electrical specifications and share the same SOT-23-3 package. The BAS40 variants offer higher voltage ratings (40 V vs. 30 V) and lower reverse leakage current, making them suitable replacements.