HER105S-AP Equivalent & Substitute Parts

Part Overview

The HER105S-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 1 A average rectified current. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement continuity. The diode features fast recovery characteristics with a reverse recovery time of 50 ns and is housed in an axial through-hole package (A-405).

Substiute Parts

HER105S-AP

Micro Commercial CoIn Stock: 988HER105S-AP Datasheet

Current PartRFQ

AG01V

Sanken Electric USA Inc.In Stock: 746AG01V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HER105S-AP is determined by the following critical electrical and mechanical parameters:

Voltage Rating: The substitute part must maintain a DC reverse voltage rating of 400 V or higher to ensure equivalent or superior voltage withstand capability.

Current Rating: The substitute part must support the required average rectified current. The HER105S-AP is rated for 1 A; substitute parts rated at 700 mA or higher are acceptable for applications where the full 1 A current is not continuously demanded.

Package and Mounting: Both the main part and substitute must use axial through-hole packaging to ensure mechanical and electrical compatibility with existing printed circuit board layouts.

Recovery Characteristics: The substitute part must maintain fast recovery classification (≤ 500ns, > 200mA) to preserve circuit performance in switching applications.

Compliance: RoHS compliance status ensures regulatory alignment for end-use applications.

Parameter Comparison

Engineering Selection Recommendations

The AG01V from Sanken Electric USA Inc. is a direct substitute for the obsolete HER105S-AP based on matching voltage rating, package type, and fast recovery classification. The AG01V is an active product with current manufacturing support, addressing the obsolescence status of the HER105S-AP.

Current Rating Consideration: The AG01V is rated for 700 mA average rectified current compared to the HER105S-AP's 1 A rating. Selection of the AG01V is appropriate for applications where the circuit design does not require the full 1 A capacity. For applications demanding continuous 1 A operation, alternative 1 A rated diodes with 400 V rating and axial through-hole packaging must be evaluated.

Electrical Performance: The AG01V exhibits a higher forward voltage drop (1.8 V @ 700 mA versus 1.3 V @ 1 A) and longer reverse recovery time (100 ns versus 50 ns). These differences result in increased power dissipation and may affect switching speed in high-frequency applications. Circuit thermal and timing analysis is required to confirm suitability.

Compliance and Availability: The AG01V maintains RoHS compliance and is available in active production inventory, ensuring long-term procurement reliability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the AG01V directly replace the HER105S-AP in all applications?

A: The AG01V is mechanically and electrically compatible for applications where the average rectified current does not exceed 700 mA. Applications requiring the full 1 A capacity of the HER105S-AP require alternative component selection.

Q: What is the impact of the higher forward voltage drop in the AG01V?

A: The AG01V exhibits 1.8 V forward voltage drop at 700 mA compared to 1.3 V at 1 A for the HER105S-AP. This results in increased power dissipation across the diode. Circuit power budget and thermal design must account for this difference.

Q: Does the longer reverse recovery time of the AG01V affect circuit performance?

A: The AG01V has a reverse recovery time of 100 ns compared to 50 ns for the HER105S-AP. Both remain within the fast recovery classification (≤ 500ns). In switching applications, the longer recovery time may introduce minor timing differences; circuit simulation or testing is necessary to confirm performance impact.

Q: Are both parts available in the same packaging format?

A: Yes. Both the HER105S-AP and AG01V use axial through-hole packaging, ensuring identical mechanical fit and printed circuit board compatibility.

Q: What is the significance of the AG01V's active product status?

A: The AG01V is currently in production by Sanken Electric USA Inc., ensuring long-term availability and supply chain continuity. The HER105S-AP is obsolete and no longer manufactured, making the AG01V a viable alternative for ongoing procurement.

Q: How do the operating temperature ranges compare?

A: The HER105S-AP operates from -55°C to 125°C, while the AG01V operates from -40°C to 150°C. The AG01V provides a wider upper temperature range, suitable for higher-temperature environments. Applications requiring operation below -40°C must use the HER105S-AP or identify alternative components.