FR1K-13 Equivalent & Substitute Parts

Part Overview

The FR1K-13 is a fast recovery rectifier diode manufactured by Diodes Incorporated, rated for 800 V DC reverse voltage with 1 A average rectified current. The device is housed in a DO-214AA (SMB) surface mount package and features a reverse recovery time of 500 ns. The FR1K-13 is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while meeting modern compliance standards.

Substiute Parts

FR1K-13

Diodes IncorporatedIn Stock: 1189FR1K-13 Datasheet

Current PartRFQ

RS1KB-13-F

Diodes IncorporatedIn Stock: 15191RS1KB-13-F Datasheet

MFR RecommendedRFQ

STTH208U

STMicroelectronicsIn Stock: 20394STTH208U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FR1K-13 are selected based on strict electrical and mechanical parameter compatibility. The primary substitution criteria are:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 800 V minimum
• Package / Case: DO-214AA (SMB) surface mount
• Mounting Type: Surface Mount
• Speed Classification: Fast Recovery

Compatible Substitution Parameters:

• Current - Average Rectified (Io): Equal to or greater than 1 A
• Reverse Recovery Time (trr): Equal to or less than 500 ns
• Current - Reverse Leakage @ Vr: Equal to or less than 5 µA @ 800 V
• Operating Temperature - Junction: Minimum -65°C to maximum 175°C or higher

Parts meeting these criteria are electrically and mechanically interchangeable within the specified application envelope. Current ratings above 1 A represent uprated substitutes suitable for higher-current applications. Reverse recovery time values below 500 ns indicate improved switching performance.

Parameter Comparison

Engineering Selection Recommendations

RS1KB-13-F (Diodes Incorporated): This substitute provides direct electrical equivalence to the FR1K-13 with identical voltage, current, and reverse recovery specifications. The RS1KB-13-F is manufactured by the same supplier and maintains the same base product series (RS1K). The part is active in production and ROHS3 compliant, addressing the obsolescence and compliance limitations of the FR1K-13. Operating temperature range is -65°C to 150°C, which covers standard industrial applications. This substitute is recommended for direct replacement in existing designs requiring minimal qualification effort.

STTH208U (STMicroelectronics): This substitute provides enhanced performance characteristics with a 2 A current rating and significantly reduced reverse recovery time of 75 ns compared to the FR1K-13's 500 ns. The STTH208U maintains 800 V voltage rating and DO-214AA package compatibility. The part is active in production and ROHS3 compliant. The higher current rating and faster switching performance make this substitute suitable for applications requiring improved efficiency or higher current capacity. Operating temperature maximum of 175°C matches the FR1K-13 specification. Forward voltage at rated current is higher (1.65 V @ 2 A) due to the increased current rating.

Both substitutes are active products with modern compliance certifications, eliminating supply chain risk associated with the obsolete FR1K-13.

Frequently Asked Questions (FAQ)

Q: Can the RS1KB-13-F directly replace the FR1K-13 in existing designs?

A: Yes. The RS1KB-13-F provides identical electrical specifications for voltage (800 V), current (1 A), forward voltage (1.3 V @ 1 A), and reverse recovery time (500 ns). Both devices use the DO-214AA (SMB) surface mount package. No circuit modifications are required for direct substitution.

Q: What is the primary difference between the RS1KB-13-F and STTH208U substitutes?

A: The RS1KB-13-F maintains 1 A current rating and 500 ns reverse recovery time, matching the FR1K-13 specification. The STTH208U provides a higher 2 A current rating and faster 75 ns reverse recovery time. The STTH208U is suitable for applications requiring higher current capacity or improved switching performance. Forward voltage differs due to the current rating difference.

Q: Are both substitutes available in the same packaging format as the FR1K-13?

A: Both substitutes use the DO-214AA (SMB) surface mount package, matching the FR1K-13 footprint and mounting type. Packaging formats differ: RS1KB-13-F is supplied in Tape & Reel (TR), while STTH208U is supplied in Cut Tape (CT) & Digi-Reel®. Both formats are compatible with standard surface mount assembly processes.

Q: What compliance advantages do the substitutes offer over the FR1K-13?

A: Both RS1KB-13-F and STTH208U are ROHS3 compliant, whereas the FR1K-13 is RoHS non-compliant. This addresses regulatory requirements for new designs and production in regions with RoHS mandates. Both substitutes maintain REACH Unaffected status and EAR99 ECCN classification matching the original part.

Q: Which substitute should be selected for a new design?

A: For applications requiring exact electrical equivalence with minimal design changes, select RS1KB-13-F. For applications where improved switching performance or higher current capacity provides system benefits, select STTH208U. Both are active products with established supply chains and modern compliance certifications.

Q: Is the operating temperature range a limiting factor for either substitute?

A: The RS1KB-13-F operates from -65°C to 150°C, which is 25°C lower than the FR1K-13 maximum of 175°C. For applications requiring operation at temperatures above 150°C, the STTH208U with 175°C maximum rating is required. Standard industrial applications typically operate within the RS1KB-13-F temperature range.