Equivalent & Substitute Parts for 5KP9.0A TVS Diode

Part Overview

The 5KP9.0A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose transient voltage protection applications. This through-hole component operates across a wide temperature range (-55°C to 175°C) and is ROHS3 compliant. The part is currently in active production status with substantial inventory availability (3300 pcs). Substitute parts are identified when electrical and mechanical parameters align within the specified tolerances for this TVS diode category.

Substiute Parts

5KP9.0A

LittelfuseIn Stock: 33145KP9.0A Datasheet

Current PartRFQ

SA9.0A

Taiwan Semiconductor CorporationIn Stock: 300450SA9.0A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TVS diodes is determined by matching the following critical electrical parameters:

• Voltage - Reverse Standoff (Typ): 9V
• Voltage - Clamping (Max) @ Ipp: 15.4V
• Unidirectional configuration (1 channel)
• Operating temperature range compatibility: -55°C to 175°C
• Through-hole mounting type
• ROHS3 compliance and REACH unaffected status

The SA9.0A from Taiwan Semiconductor Corporation meets these core substitution criteria. While the SA9.0A exhibits lower peak pulse current (34A vs. 331.2A) and reduced peak pulse power (500W vs. 5000W), it maintains identical voltage specifications and temperature operating range, making it suitable for applications where peak pulse requirements are within the SA9.0A's rated capacity.

Parameter Comparison

Engineering Selection Recommendations

Both the 5KP9.0A and SA9.0A are active production components with ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. Selection between these parts depends on application-specific peak pulse current and power dissipation requirements. The 5KP9.0A (P600 package) is specified for 331.2A peak pulse current and 5000W peak pulse power, while the SA9.0A (DO-204AC/DO-15 package) is rated for 34A peak pulse current and 500W peak pulse power. Both maintain identical voltage clamping characteristics (15.4V @ Ipp) and operate across the full -55°C to 175°C temperature range. Component selection should be based on the actual transient pulse characteristics of the protected circuit.

Frequently Asked Questions (FAQ)

Q: Can SA9.0A replace 5KP9.0A in all applications?

A: SA9.0A is electrically compatible for voltage specifications but has lower peak pulse current (34A vs. 331.2A) and power ratings (500W vs. 5000W). Substitution is valid only when circuit transient pulses remain within SA9.0A's rated capacity.

Q: What are the package differences between these parts?

A: The 5KP9.0A uses P600 axial package while SA9.0A uses DO-204AC (DO-15) axial package. Both are through-hole components with different physical dimensions and lead configurations.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both 5KP9.0A and SA9.0A are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance restrictions.

Q: What determines if these parts are interchangeable?

A: Interchangeability is determined by matching voltage specifications (9V standoff, 15.4V clamping), unidirectional configuration, operating temperature range (-55°C to 175°C), and ensuring the substitute's peak pulse ratings meet or exceed circuit requirements.

Q: How do I verify which part is suitable for my application?

A: Compare your circuit's maximum transient voltage and peak pulse current against each part's rated specifications. The 5KP9.0A handles higher transient energy (5000W), while SA9.0A is suitable for lower-energy transient events (500W).