S1JFP Equivalent & Substitute Parts

Part Overview

The S1JFP is a general-purpose rectifier diode manufactured by onsemi, rated for 600V DC reverse voltage and 1.2A average rectified current in a surface mount SOD-123HE package. This device is qualified to AEC-Q101 automotive standards and features standard recovery characteristics with a reverse recovery time of 1.5 µs.

The S1JFP carries a product status designation of "Not For New Designs," indicating that onsemi has discontinued active development and support for this component. Organizations requiring this diode for new applications or seeking to transition existing designs must identify functionally equivalent alternatives that maintain electrical performance and compliance requirements while utilizing components with active product status.

Substiute Parts

S1JFP

onsemiIn Stock: 12667S1JFP Datasheet

Current PartRFQ

SE15PJHM3/84A

Vishay General Semiconductor - Diodes DivisionIn Stock: 6429SE15PJHM3/84A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S1JFP is determined by the following critical electrical and mechanical parameters:

Voltage Rating: The substitute must maintain a DC reverse voltage rating of 600V or greater to ensure equivalent reverse bias protection.

Current Rating: The substitute must support an average rectified current of 1.2A or greater to handle the intended load without thermal stress.

Recovery Characteristics: The substitute must operate within the standard recovery classification (>500ns, >200mA) to maintain switching performance in rectification circuits.

Reverse Leakage: The substitute must not exceed 5 µA at 600V to preserve circuit isolation and minimize standby current.

Thermal Range: The substitute must support the operating junction temperature range of -55°C to 150°C or extend beyond this range to ensure reliability across intended operating conditions.

Compliance & Qualification: The substitute must maintain AEC-Q101 automotive qualification and ROHS3 compliance to satisfy regulatory and supply chain requirements.

Package Compatibility: While the S1JFP uses SOD-123H packaging, substitutes may employ alternative surface mount packages (such as DO-220AA) provided the physical dimensions and mounting footprint are compatible with the target application's PCB layout.

The SE15PJHM3/84A meets these substitution criteria through equivalent or superior electrical performance across all critical parameters.

Parameter Comparison

Engineering Selection Recommendations

The SE15PJHM3/84A from Vishay General Semiconductor - Diodes Division is a qualified substitute for the S1JFP based on the following engineering criteria:

Electrical Equivalence: The SE15PJHM3/84A meets or exceeds all critical electrical parameters. It provides identical 600V reverse voltage rating and 5 µA reverse leakage current. The substitute's 1.5A average rectified current rating exceeds the S1JFP requirement of 1.2A, providing design margin. Forward voltage performance is superior at 1.05V versus 1.3V at rated current, reducing power dissipation.

Recovery Performance: Both devices operate within the standard recovery classification. The SE15PJHM3/84A exhibits faster reverse recovery time (0.9 µs versus 1.5 µs), which improves switching efficiency without introducing incompatibility.

Thermal Capability: The SE15PJHM3/84A extends the maximum junction temperature to 175°C compared to the S1JFP's 150°C, providing enhanced thermal margin for high-temperature applications.

Compliance & Qualification: Both devices maintain AEC-Q101 automotive qualification and ROHS3 compliance, satisfying regulatory requirements for automotive and industrial applications.

Product Status: The SE15PJHM3/84A carries active product status, ensuring continued availability, manufacturing support, and supply chain stability for new designs and production transitions.

Package Consideration: The SE15PJHM3/84A uses DO-220AA (SMP) packaging versus the S1JFP's SOD-123H. PCB layout modifications are required to accommodate the different footprint. Design teams must verify physical compatibility with existing circuit board layouts before implementation.

Frequently Asked Questions (FAQ)

Q: Can the SE15PJHM3/84A directly replace the S1JFP without circuit modifications?

A: The SE15PJHM3/84A provides electrical equivalence and can replace the S1JFP functionally. However, the different package types (DO-220AA versus SOD-123H) require PCB layout changes. Verify that the target PCB footprint accommodates the DO-220AA package dimensions and mounting requirements before implementation.

Q: What is the significance of the S1JFP's "Not For New Designs" status?

A: This designation indicates that onsemi has discontinued active development and support for the S1JFP. New circuit designs should not incorporate this component. Existing designs using the S1JFP should transition to active alternatives such as the SE15PJHM3/84A to ensure long-term supply availability and manufacturing support.

Q: Are both devices suitable for automotive applications?

A: Yes. Both the S1JFP and SE15PJHM3/84A carry AEC-Q101 automotive qualification, confirming suitability for automotive-grade applications. Both maintain ROHS3 compliance and REACH unaffected status, satisfying automotive supply chain requirements.

Q: How does the forward voltage difference affect circuit performance?

A: The SE15PJHM3/84A exhibits lower forward voltage (1.05V at 1.5A) compared to the S1JFP (1.3V at 1.2A). This reduces power dissipation in the substitute device, resulting in lower heat generation and improved efficiency. Circuit designs do not require modification to accommodate this improvement.

Q: What is the impact of the faster reverse recovery time in the SE15PJHM3/84A?

A: The SE15PJHM3/84A's reverse recovery time of 0.9 µs is faster than the S1JFP's 1.5 µs. Both devices remain within the standard recovery classification. Faster recovery improves switching efficiency and reduces switching losses, providing a performance advantage without introducing circuit incompatibility.

Q: Are there moisture sensitivity or handling differences between these devices?

A: Both devices carry MSL (Moisture Sensitivity Level) rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. Handling, storage, and reflow procedures are equivalent for both components.

Q: What thermal considerations apply when substituting the SE15PJHM3/84A?

A: The SE15PJHM3/84A supports junction temperatures up to 175°C, compared to the S1JFP's 150°C maximum. This extended range provides additional thermal margin. Thermal design calculations should account for the different package geometry (DO-220AA) when estimating thermal resistance and heat dissipation characteristics.