Equivalent & Substitute Parts Reference: RK 44 (Sanken Electric USA Inc.)

Part Overview

The Sanken Electric USA Inc. RK 44 is a Schottky diode rated for 40 V reverse voltage and 3A average rectified current, supplied in a through-hole axial package. This device is categorized as a fast recovery rectifier (≤500 ns, >200 mA Io), RoHS compliant, and designed for applications requiring reliable, low drop rectification. The RK 44 is currently classified as obsolete, making it necessary to identify suitable alternate models that meet the original electrical and mechanical specifications for continued production, repair, or design support.

Substiute Parts

RK 44

Sanken Electric USA Inc.In Stock: 891RK 44 Datasheet

Current PartRFQ

1N5822

Microchip TechnologyIn Stock: 269381N5822 Datasheet

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1N5822

Microchip TechnologyIn Stock: 269381N5822 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK 44 diode are selected strictly by matching the following key parameters: Schottky technology, maximum 40 V reverse voltage, 3A average rectified current, fast recovery speed (≤500 ns), and through-hole axial package type. Only diodes meeting these explicit criteria are considered, ensuring form, fit, and electrical interoperability with the original device.

Key substitution criteria:

• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 3A
• Voltage - Forward (Vf) (Max) @ If: ≤550 mV @ 3 A
• Speed: Fast Recovery ≤500 ns, >200 mA (Io)
• Mounting Type: Through Hole, Axial

Parameter Comparison

Engineering Selection Recommendations

The RK 44 diode from Sanken Electric USA Inc. is obsolete and RoHS compliant. The 1N5822 from Microchip Technology matches all substituted electrical and mounting parameters and is active but is RoHS non-compliant. These characteristics should be verified according to application-specific requirements focused on product status (active/obsolete) and regulatory compliance (RoHS).

Frequently Asked Questions (FAQ)

Q1: What makes the 1N5822 a suitable substitute for RK 44?
A1: The 1N5822 matches all key parameters: Schottky technology, 40 V reverse voltage, 3A average rectified current, fast recovery speed, and through-hole axial package configuration.

Q2: Is there any difference in package type between RK 44 and 1N5822?
A2: Both are axial lead, through-hole devices. The RK 44 is specified as "Axial" while the 1N5822 is "B, Axial"; both are compatible for axial mounting.

Q3: How does RoHS compliance differ between RK 44 and its substitutes?
A3: The RK 44 is RoHS compliant. The 1N5822 substitutes listed are RoHS non-compliant, which is relevant for applications with strict environmental requirements.

Q4: Are there differences in maximum junction operating temperature?
A4: The RK 44 operates from -40°C to 150°C, while 1N5822 operates from -65°C to 125°C.

Q5: What is the difference in reverse leakage current at rated voltage?
A5: The RK 44 has a maximum reverse leakage of 5 mA at 40 V, while the 1N5822 specifies 100 µA at 40 V.

Q6: What parameters must always match when selecting a Schottky diode substitute in this category?
A6: Essential match parameters include technology, maximum reverse voltage, average rectified current, speed rating, and mounting/package style.