ES1DAF Equivalent & Substitute Parts

Part Overview

The ES1DAF is a general-purpose rectifier diode manufactured by onsemi, rated for 200 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 This component is classified as "Not For New Designs," indicating it has been superseded in onsemi's product portfolio.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

ES1DAF

onsemiIn Stock: 168307ES1DAF Datasheet

Current PartRFQ

ES1D-E3/61T

Vishay General Semiconductor - Diodes DivisionIn Stock: 2328676ES1D-E3/61T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ES1DAF must satisfy the following electrical and mechanical criteria:

Electrical Parameters (Critical for Substitution):

• Voltage - DC Reverse (Vr) (Max): 200 V minimum
• Current - Average Rectified (Io): 1 A minimum
• Technology: Standard rectifier diode
• Speed Classification: Fast Recovery (≤ 500 ns, > 200 mA)

Mechanical Parameters (Critical for Substitution):

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

Compliance Parameters:

• RoHS3 Compliant
• Operating Temperature Range: -55°C to 150°C minimum

The ES1D-E3/61T manufactured by Vishay General Semiconductor - Diodes Division qualifies as a substitute part. Although it uses the DO-214AC (SMA) package instead of DO-214AD (SMAF), both packages are surface mount DO-214 variants with compatible footprint geometries for PCB integration. The electrical ratings meet or exceed the ES1DAF specifications, and compliance certifications align with automotive and industrial standards.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The ES1DAF carries a "Not For New Designs" designation, whereas the ES1D-E3/61T is classified as "Active." For applications requiring long-term component availability and manufacturer support, the ES1D-E3/61T is the preferred selection.

Compliance and Certification

Both parts maintain ROHS3 compliance and operate across the identical temperature range (-55°C to 150°C). The ES1DAF holds AEC-Q101 automotive qualification; the ES1D-E3/61T specifications provided do not explicitly list this certification. Applications requiring AEC-Q101 qualification should verify Vishay documentation before substitution.

Electrical Performance

The ES1D-E3/61T demonstrates superior electrical characteristics: lower forward voltage drop (920 mV vs. 950 mV), faster reverse recovery time (25 ns vs. 34 ns), and lower junction capacitance (10 pF vs. 15 pF). These improvements reduce power dissipation and switching losses. The reverse leakage current is higher (5 µA vs. 1 µA), which remains acceptable for general-purpose rectification applications.

Package Compatibility

The DO-214AC (SMA) package used by the ES1D-E3/61T differs from the DO-214AD (SMAF) package of the ES1DAF. Both are surface mount packages within the DO-214 family. PCB footprint verification is required before substitution to confirm mechanical compatibility with existing circuit board layouts.

Frequently Asked Questions (FAQ)

Q: Can the ES1D-E3/61T directly replace the ES1DAF without PCB modifications?

A: Electrical substitution is valid. However, the DO-214AC (SMA) and DO-214AD (SMAF) packages have different physical dimensions. PCB footprint compatibility must be verified. If the existing PCB is designed for DO-214AD, the DO-214AC package may not fit without layout changes.

Q: What is the difference between DO-214AD (SMAF) and DO-214AC (SMA) packages?

A: Both are surface mount rectifier packages within the DO-214 family. The primary difference is physical size and lead configuration. DO-214AD (SMAF) and DO-214AC (SMA) have distinct footprints. Consult package datasheets for exact dimensions before PCB integration.

Q: Why is the ES1DAF marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's portfolio. onsemi recommends using alternative parts for new applications. Existing designs may continue using ES1DAF stock, but long-term availability cannot be guaranteed.

Q: Is the ES1D-E3/61T suitable for automotive applications?

A: The ES1D-E3/61T meets general automotive standards and is manufactured by Vishay, a qualified automotive supplier. However, the provided specifications do not explicitly confirm AEC-Q101 qualification. Applications requiring specific automotive certifications should consult Vishay's full datasheet and qualification documentation.

Q: How do the electrical differences between ES1DAF and ES1D-E3/61T affect circuit performance?

A: The ES1D-E3/61T exhibits lower forward voltage drop (30 mV reduction), faster recovery time (9 ns faster), and lower capacitance. These characteristics reduce power dissipation and improve switching performance. For most general-purpose rectification circuits, these differences are beneficial and do not require circuit redesign.

Q: What inventory considerations apply to these parts?

A: The ES1DAF has 168,200 pieces in stock (legacy status). The ES1D-E3/61T has 2,328,659 pieces available (active product). For applications requiring sustained component supply, the ES1D-E3/61T offers superior long-term availability.