ES1JAF Equivalent & Substitute Parts

Part Overview

The ES1JAF is a general-purpose rectifier diode manufactured by onsemi, rated for 600 V DC reverse voltage and 1 A average rectified current in a Surface Mount DO-214AD (SMAF) package. This component is classified as Not For New Designs, indicating it has been superseded in onsemi's product portfolio. Identifying equivalent substitute parts is necessary for applications requiring continued support, legacy system maintenance, or when original stock becomes unavailable.

Substiute Parts

ES1JAF

onsemiIn Stock: 55264ES1JAF Datasheet

Current PartRFQ

US1J-E3/61T

Vishay General Semiconductor - Diodes DivisionIn Stock: 110305US1J-E3/61T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ES1JAF are identified based on electrical and mechanical compatibility within the general-purpose rectifier diode category. The primary substitution criteria are:

Electrical Parameters (Must Match or Exceed):

• Voltage - DC Reverse (Vr) (Max): 600 V minimum
• Current - Average Rectified (Io): 1 A minimum
• Voltage - Forward (Vf) (Max) @ If: 1.7 V or lower @ 1 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature - Junction: -55°C to 150°C minimum range

Mechanical Parameters (Must Be Compatible):

• Mounting Type: Surface Mount
• Package compatibility: DO-214 series packages (DO-214AD or DO-214AC)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The US1J-E3/61T from Vishay General Semiconductor - Diodes Division meets all substitution criteria and is classified as Active, providing continued availability and support.

Parameter Comparison

Engineering Selection Recommendations

The ES1JAF is designated as Not For New Designs, indicating onsemi has discontinued active support and development for this component. The US1J-E3/61T from Vishay is classified as Active and provides equivalent electrical performance with identical voltage and current ratings, forward voltage characteristics, and temperature operating range.

Both components are ROHS3 Compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage protocols. Both maintain the fast recovery diode classification required for switching applications.

The primary difference between these parts is the package variant: ES1JAF uses DO-214AD (SMAF), while US1J-E3/61T uses DO-214AC (SMA). Both are Surface Mount packages within the DO-214 family. The US1J-E3/61T exhibits slightly higher reverse recovery time (75 ns versus 34 ns) and higher reverse leakage current (10 µA versus 1 µA), which remain within acceptable ranges for general-purpose rectification applications. The lower capacitance of the US1J-E3/61T (10 pF versus 15 pF) may provide marginal benefits in high-frequency switching scenarios.

Selection of the US1J-E3/61T is supported by its Active product status, ensuring continued availability and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the US1J-E3/61T directly replace the ES1JAF without circuit modification?

A: Electrical substitution is valid based on matching voltage, current, and forward voltage specifications. However, the package difference (DO-214AD versus DO-214AC) requires PCB footprint verification. Both packages are Surface Mount variants within the DO-214 family, but physical dimensions differ. Confirm PCB layout compatibility before implementation.

Q: What is the significance of the reverse recovery time difference (34 ns versus 75 ns)?

A: Reverse recovery time affects switching speed and switching losses in high-frequency applications. The ES1JAF exhibits faster recovery. For general-purpose rectification at standard line frequencies, the US1J-E3/61T's 75 ns recovery time remains acceptable. Applications requiring optimized switching performance at frequencies above 100 kHz should evaluate this parameter against specific circuit requirements.

Q: Why does the US1J-E3/61T have higher reverse leakage current (10 µA versus 1 µA)?

A: Reverse leakage current variation within the 600 V rating class is normal across manufacturers and process technologies. The 10 µA leakage of the US1J-E3/61T remains within acceptable limits for general-purpose rectifier applications. High-impedance analog circuits or precision measurement applications should evaluate this parameter against circuit sensitivity thresholds.

Q: Are both parts suitable for new designs?

A: The ES1JAF is Not For New Designs. The US1J-E3/61T is Active and appropriate for new designs. For legacy system maintenance or continued production of existing designs, the US1J-E3/61T provides equivalent functionality with ongoing manufacturer support.

Q: What compliance certifications apply to both parts?

A: Both the ES1JAF and US1J-E3/61T are ROHS3 Compliant, REACH Unaffected, and carry ECCN EAR99 classification. Both maintain MSL 1 (Unlimited) moisture sensitivity ratings. Compliance documentation is consistent across both components for standard manufacturing environments.

Q: How do the package dimensions affect PCB design?

A: DO-214AD (SMAF) and DO-214AC (SMA) are distinct Surface Mount packages with different footprints. Verify that the US1J-E3/61T package footprint matches the PCB design before component selection. Package datasheets provide precise dimensional specifications for layout verification.