FR1K Equivalent & Substitute Parts

Part Overview

The FR1K is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 800V DC reverse voltage with 1A average rectified current in a surface mount SMB (DO-214AA) package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring fast recovery rectification in compact surface mount form factors.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 1	V @ A
Reverse Recovery Time (trr)	500	ns
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-50 to 150	°C

Substitute Part Grouping Explanation

Substitution of the FR1K is determined by strict equivalence across the following critical parameters:

Voltage Rating: DC reverse voltage must equal 800V maximum
Current Rating: Average rectified current must equal 1A
Forward Voltage Drop: Maximum forward voltage at 1A must not exceed 1.3V
Recovery Characteristics: Fast recovery classification with reverse recovery time ≤ 500ns
Package Compatibility: Surface mount SMB (DO-214AA) package required for mechanical and thermal compatibility
Operating Temperature Range: Junction temperature range must span -50°C to 150°C minimum

The substitute part FR1K_R1_00001 (Panjit International Inc.) meets all mandatory electrical and mechanical parameters for direct substitution in the FR1K application space.

Parameter Comparison

Parameter	FR1K (SMC)	FR1K_R1_00001 (Panjit)	Match Status
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	Equivalent
Current - Average Rectified (Io)	1 A	1 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	Equivalent
Reverse Recovery Time (trr)	500 ns	500 ns	Equivalent
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Equivalent
Current - Reverse Leakage @ Vr	5 µA @ 800 V	1 µA @ 800 V	Substitute Superior
Capacitance @ Vr, F	10 pF @ 4V, 1MHz	12 pF @ 4V, 1MHz	Within Tolerance
Package / Case	DO-214AA, SMB	DO-214AA, SMB	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature - Junction	-50°C ~ 150°C	-50°C ~ 150°C	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

Both the FR1K (SMC Diode Solutions) and FR1K_R1_00001 (Panjit International Inc.) are Active product status components with full RoHS3 compliance and MSL Level 1 rating, indicating unlimited shelf life under standard storage conditions.

The FR1K_R1_00001 substitute demonstrates equivalent electrical performance across all critical parameters with a measurable improvement in reverse leakage current (1 µA versus 5 µA at 800V), which may provide enhanced performance in low-leakage applications. Capacitance variance (12 pF versus 10 pF) remains within acceptable tolerance for general-purpose rectification circuits.

Selection between these parts should be based on availability, procurement lead time, and supply chain requirements, as both components satisfy identical functional and compliance specifications for 800V, 1A fast recovery rectification in SMB surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can FR1K_R1_00001 be used as a direct replacement for FR1K in existing designs?

A: Yes. Both components share identical voltage ratings (800V), current ratings (1A), forward voltage characteristics (1.3V @ 1A), recovery time (500ns), package type (DO-214AA SMB), and operating temperature range (-50°C to 150°C). No circuit redesign or PCB modification is required.

Q: What is the significance of the reverse leakage current difference between these parts?

A: The FR1K_R1_00001 exhibits lower reverse leakage current (1 µA) compared to the FR1K (5 µA) at 800V. This difference is within normal manufacturing variation for general-purpose rectifier diodes and does not affect substitution eligibility. Applications with strict leakage requirements may benefit from the lower leakage characteristic.

Q: Are there package compatibility concerns when substituting between these parts?

A: No. Both parts use identical DO-214AA SMB surface mount packaging. PCB footprints, reflow soldering profiles, and thermal management considerations remain unchanged between the FR1K and FR1K_R1_00001.

Q: Do compliance certifications differ between the FR1K and FR1K_R1_00001?

A: Both components are RoHS3 compliant and carry MSL Level 1 rating. The FR1K is REACH Affected while FR1K_R1_00001 is REACH Unaffected. Both share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. Compliance verification with specific regulatory requirements should be performed based on end-application jurisdiction.

Q: What inventory considerations apply to these substitute parts?

A: The FR1K maintains 773 pieces in stock while FR1K_R1_00001 has 1826 pieces available. Substitute selection may be influenced by required delivery timelines and procurement quantity requirements.

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