5KP190 Equivalent & Substitute Parts

Part Overview

The 5KP190 is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This component features a 190V reverse standoff voltage with a 325.5V maximum clamping voltage and 5000W peak pulse power rating. The part is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and procurement continuity. Active equivalent models maintain the same electrical performance envelope while offering improved availability and current manufacturing status.

Substiute Parts

5KP190

Littelfuse Inc.In Stock: 10985KP190 Datasheet

Current PartRFQ

5KP190A

Littelfuse Inc.In Stock: 8235KP190A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP190 is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 190V (exact match required)
• Voltage - Clamping (Max) @ Ipp: Must not exceed 325.5V to maintain circuit protection margins
• Power - Peak Pulse: 5000W (5kW) minimum requirement
• Package / Case: P600, Axial (mechanical and thermal compatibility)
• Mounting Type: Through Hole (PCB assembly compatibility)
• Operating Temperature Range: -55°C to 175°C (TJ) minimum
• Type: Zener diode, unidirectional configuration

The 5KP190A qualifies as a direct substitute based on matching all critical parameters within the allowed tolerance envelope. The substitute maintains identical reverse standoff voltage, equivalent peak pulse power rating, and compatible thermal operating range. Packaging and mounting specifications are identical, ensuring drop-in compatibility in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The 5KP190A is the qualified substitute for the obsolete 5KP190. Selection is based on the following engineering criteria:

• Product Status: The 5KP190A maintains Active status, ensuring continued manufacturing support and supply chain availability, whereas the 5KP190 is classified as Obsolete.
• Regulatory Compliance: Both parts maintain ROHS3 compliance and identical ECCN/HTSUS classifications, ensuring no regulatory barriers to substitution.
• Electrical Performance: The 5KP190A delivers improved clamping voltage performance (310V vs. 325.5V), providing enhanced circuit protection margins while maintaining the same 5000W peak pulse power rating.
• Thermal Characteristics: Operating temperature range remains -55°C to 175°C (TJ), ensuring compatibility across all specified environmental conditions.
• Mechanical Compatibility: Identical P600 axial package and through-hole mounting ensure direct PCB assembly compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the 5KP190A be used as a direct replacement for the 5KP190 in existing designs?

A: Yes. The 5KP190A is a direct substitute. Both parts share identical reverse standoff voltage (190V), peak pulse power rating (5000W), operating temperature range (-55°C to 175°C), and P600 axial through-hole package. No circuit redesign or PCB modification is required.

Q: What is the difference in clamping voltage between the 5KP190 and 5KP190A?

A: The 5KP190 specifies a maximum clamping voltage of 325.5V, while the 5KP190A specifies 310V. The lower clamping voltage of the substitute provides improved transient suppression performance and tighter voltage regulation in the protected circuit.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the 5KP190 and 5KP190A maintain identical RoHS3 compliance status, Moisture Sensitivity Level (MSL 1 - Unlimited), and regulatory classifications (ECCN: EAR99, HTSUS: 8541.10.0080).

Q: What packaging options are available for the 5KP190A?

A: The 5KP190A is supplied in Tape & Reel (TR) packaging for automated assembly processes. The component maintains the P600 axial package configuration, compatible with through-hole PCB assembly equipment.

Q: Why is the 5KP190 classified as obsolete?

A: The 5KP190 has reached end-of-life status in the manufacturer's product portfolio. The 5KP190A represents the active equivalent, offering improved specifications and continued manufacturing support.

Q: Are the electrical characteristics of the 5KP190A suitable for all applications originally designed for the 5KP190?

A: Yes. The 5KP190A meets or exceeds all critical electrical parameters required for general-purpose transient voltage suppression applications. The improved clamping voltage performance makes it suitable for all legacy 5KP190 applications.