FR156S-TP Equivalent & Substitute Parts

Part Overview

The FR156S-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 V DC reverse voltage and 1.5 A average rectified current in a through-hole DO-41 package. This component is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support, maintenance, and production continuity. The fast recovery characteristic (≤500 ns) and compact axial package make this diode suitable for standard rectification applications requiring moderate voltage and current ratings.

Substiute Parts

FR156S-TP

Micro Commercial CoIn Stock: 1052FR156S-TP Datasheet

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GP10K-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 2219GP10K-E3/73 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FR156S-TP is determined by the following critical electrical and mechanical parameters:

Voltage Rating: The substitute part must maintain the 800 V DC reverse voltage specification to ensure safe operation in the intended circuit application.

Current Rating: The substitute part current rating must equal or exceed the 1.5 A average rectified current requirement. Parts with lower current ratings are not suitable.

Package Compatibility: The substitute must use the DO-41 (DO-204AL) through-hole axial package to ensure mechanical fit and lead compatibility with existing PCB layouts.

Recovery Characteristics: The substitute may have different recovery speed classifications (standard or fast recovery) provided the reverse recovery time does not introduce unacceptable switching losses in the application.

Temperature Range: The substitute must support the operating junction temperature range or a range that encompasses the original specification.

Compliance: The substitute must maintain RoHS3 compliance and equivalent environmental certifications.

The GP10K-E3/73 qualifies as a substitute based on matching voltage rating (800 V), compatible package (DO-41/DO-204AL), and RoHS3 compliance. However, the current rating differential (1 A versus 1.5 A) and recovery speed difference (standard versus fast) require circuit-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration - Product Status: The FR156S-TP is classified as obsolete. The GP10K-E3/73 is an active product from a major semiconductor manufacturer (Vishay), ensuring long-term availability and supply chain stability.

Voltage and Package Compatibility: Both parts share identical 800 V reverse voltage ratings and DO-41 through-hole axial packaging, confirming mechanical and electrical compatibility at the board level.

Current Rating Differential: The GP10K-E3/73 is rated for 1.0 A average rectified current, compared to the FR156S-TP's 1.5 A rating. This represents a 33% reduction in current capacity. Selection of this substitute is appropriate only for applications where the actual circuit current demand does not exceed 1.0 A.

Recovery Speed Trade-off: The GP10K-E3/73 exhibits standard recovery characteristics (3 µs reverse recovery time) versus the FR156S-TP's fast recovery (500 ns). This difference affects switching losses and EMI performance. Applications sensitive to switching speed or operating at high frequencies may experience performance degradation with the substitute.

Temperature Range Enhancement: The GP10K-E3/73 supports an extended operating temperature range (-65°C to 175°C) compared to the FR156S-TP (-55°C to 150°C), providing additional thermal margin in demanding environments.

Compliance and Certifications: Both parts maintain ROHS3 compliance and MSL Level 1 (unlimited moisture sensitivity), ensuring equivalent environmental and regulatory standing.

Frequently Asked Questions (FAQ)

Q: Can the GP10K-E3/73 directly replace the FR156S-TP in all applications?

A: Direct replacement is possible only when the circuit current requirement does not exceed 1.0 A. The GP10K-E3/73's lower current rating (1.0 A versus 1.5 A) restricts its use to applications operating within this reduced specification. Additionally, the slower recovery time may affect high-frequency or switching applications.

Q: What is the significance of the recovery speed difference between these parts?

A: The FR156S-TP features fast recovery (500 ns), while the GP10K-E3/73 has standard recovery (3 µs). Fast recovery diodes minimize switching losses and are preferred in high-frequency rectification circuits. Standard recovery diodes are suitable for line-frequency and low-frequency applications. Selection depends on the operating frequency and switching loss budget of the target application.

Q: Are the DO-41 and DO-204AL packages identical?

A: Yes. DO-41 and DO-204AL refer to the same through-hole axial package format. Both designations are used interchangeably in industry documentation. The physical dimensions, lead spacing, and PCB footprint are identical.

Q: Does the extended temperature range of the GP10K-E3/73 provide any advantage?

A: The GP10K-E3/73 supports operation from -65°C to 175°C, compared to the FR156S-TP's -55°C to 150°C range. This extended range provides additional thermal margin and may be beneficial in extreme environment applications. However, this advantage is secondary to current rating and recovery speed considerations for most standard applications.

Q: What compliance certifications are relevant for both parts?

A: Both the FR156S-TP and GP10K-E3/73 are ROHS3 compliant and carry MSL Level 1 (unlimited) moisture sensitivity ratings. These certifications ensure compliance with environmental regulations and indicate that no special moisture control measures are required during storage or handling.

Q: Why is the FR156S-TP classified as obsolete?

A: Obsolescence reflects the manufacturer's decision to discontinue production. The GP10K-E3/73, as an active product from Vishay, represents a current-generation alternative with assured long-term availability and supply chain support.