V120ZS05P Equivalent & Substitute Parts

Part Overview

The V120ZS05P is a 120V varistor manufactured by Littelfuse in the ZS series, designed for transient voltage suppression applications. This through-hole disc component rated at 400A surge current and 3J energy dissipation is classified as Active product status. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

V120ZS05P

LittelfuseIn Stock: 992V120ZS05P Datasheet

Current PartRFQ

B72205S0750K101

EPCOS - TDK ElectronicsIn Stock: 33929B72205S0750K101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V120ZS05P is determined by strict equivalence across the following critical parameters:

• Varistor voltage rating (Typ 120V, Min 108V, Max 132V)
• Surge current capacity (400A minimum)
• Physical form factor (Through Hole, Disc 5mm)
• Number of circuits (1 circuit)
• Compliance certifications (ROHS3, REACH Unaffected)

The B72205S0750K101 meets all substitution criteria within these allowable tolerances. Variations in energy dissipation (3J vs 2.5J), maximum DC voltage (102V vs 100V), and operating temperature range do not preclude substitution when application requirements fall within the substitute part's specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the V120ZS05P and B72205S0750K101 are Active status products with ROHS3 compliance and REACH Unaffected designation. Selection between these parts is determined by application-specific requirements:

The V120ZS05P provides higher energy dissipation capacity (3J) and extended low-temperature operating range (-55°C minimum). The B72205S0750K101 offers higher maximum DC voltage tolerance (100V) and extended high-temperature operating range (105°C maximum). Both components maintain identical varistor voltage ratings and surge current specifications within the specified tolerance band.

Frequently Asked Questions (FAQ)

Q: Can B72205S0750K101 replace V120ZS05P in all applications?

A: Substitution is valid when application requirements fall within the B72205S0750K101 specifications. The lower energy rating (2.5J vs 3J) and maximum DC voltage (100V vs 102V) must be evaluated against circuit requirements. The varistor voltage rating, surge current capacity, and physical form factor are identical.

Q: What is the difference in packaging between these parts?

A: V120ZS05P is supplied in Tape & Reel (TR) packaging. B72205S0750K101 is supplied in Bulk packaging. Both components use identical Disc 5mm through-hole form factors and are mechanically interchangeable on PCBs.

Q: Are both parts RoHS compliant?

A: Yes. Both V120ZS05P and B72205S0750K101 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: How do operating temperature ranges affect substitution?

A: V120ZS05P operates from -55°C to 85°C. B72205S0750K101 operates from -40°C to 105°C. Selection depends on application temperature requirements. If the circuit operates below -40°C, V120ZS05P is required. If operation above 85°C is needed, B72205S0750K101 is required.

Q: What is the significance of the energy rating difference?

A: V120ZS05P is rated for 3J energy dissipation; B72205S0750K101 is rated for 2.5J. Applications requiring transient energy absorption exceeding 2.5J necessitate the V120ZS05P. For applications within 2.5J, both parts are equivalent.