SCHURTER 0072.4641.B1 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0072.4641.B1 is a 723 V, 4.6 kA varistor in a through-hole disc 10mm package, designed for transient voltage suppression applications. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The part operates across a temperature range of -40°C to 85°C and meets ROHS3 compliance requirements.

Substiute Parts

0072.4641.B1

SCHURTER Inc.In Stock: 8810072.4641.B1 Datasheet

Current PartRFQ

V10E440P

LittelfuseIn Stock: 965V10E440P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 0072.4641.B1 is determined by the following critical parameters:

• Varistor Voltage Range: Nominal voltage must fall within the acceptable operating window (651 V minimum to 795 V maximum for the original part)
• Surge Current Rating: Must equal or exceed 4.6 kA
• Package Configuration: Through-hole disc 10mm form factor
• Number of Circuits: Single circuit requirement
• Compliance Standards: ROHS3 compliance and REACH unaffected status
• Operating Temperature Range: Must support -40°C to 85°C minimum

The Littelfuse V10E440P meets these substitution criteria with compatible electrical characteristics and identical mechanical packaging.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse V10E440P is a direct substitute for the obsolete SCHURTER 0072.4641.B1 based on the following factors:

Compliance Alignment: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity in applications requiring these certifications.

Electrical Compatibility: The V10E440P operates within the varistor voltage tolerance band of the original part (715 V typical versus 723 V typical), with overlapping minimum and maximum voltage ranges. Surge current rating remains constant at 4.6 kA.

Mechanical Compatibility: Identical through-hole disc 10mm packaging ensures direct PCB footprint compatibility without layout modifications.

Product Status Advantage: The V10E440P is active in production, providing long-term availability and supply chain stability compared to the obsolete SCHURTER part.

Temperature Range: The V10E440P extends the lower operating temperature limit to -55°C, providing enhanced performance margin in cold environment applications.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse V10E440P be used as a direct replacement without PCB modifications?

A: Yes. Both components share identical through-hole disc 10mm packaging and single-circuit configuration, enabling direct substitution without layout changes.

Q: What is the significance of the 8 V difference in typical varistor voltage (723 V vs. 715 V)?

A: The 8 V difference falls within the overlapping tolerance ranges of both components (651-795 V for SCHURTER, 644.6-786.5 V for Littelfuse). This variance is acceptable for transient voltage suppression applications where the varistor voltage window encompasses both nominal values.

Q: Does the lower maximum DC voltage of the V10E440P (585 V vs. 615 V) affect substitution suitability?

A: Application suitability depends on the actual system DC voltage requirement. If the system operates below 585 V DC, the V10E440P is fully compatible. If the system requires operation above 585 V DC, the original SCHURTER specification must be maintained.

Q: Why is the energy rating lower for the V10E440P (85 J vs. 115 J)?

A: Energy absorption capacity is determined by component design and materials. The lower energy rating of the V10E440P reflects its specific construction. Substitution is valid only if the application's transient energy levels do not exceed 85 J per event.

Q: Are there any differences in capacitance that affect circuit performance?

A: The capacitance values are measured at different frequencies (124 pF @ 1 kHz for SCHURTER, 130 pF @ 1 MHz for Littelfuse), making direct comparison impractical. Both values are typical for 10mm disc varistors and should not significantly impact most transient suppression circuits.

Q: What is the advantage of the extended temperature range in the V10E440P?

A: The V10E440P operates from -55°C to 85°C compared to -40°C to 85°C for the SCHURTER part. This extended lower temperature limit provides operational margin in applications exposed to extreme cold environments.