SCHURTER 0070.1181.A2 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0070.1181.A2 is an 18 V, 3 kA Transient Voltage Suppressor (TVS) varistor in a 20mm disc form factor, designed for single-circuit through-hole applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The varistor provides transient voltage suppression across the specified voltage and current ratings within the operating temperature range of -40°C to 125°C.

Substiute Parts

0070.1181.A2

SCHURTER Inc.In Stock: 8690070.1181.A2 Datasheet

Current PartRFQ

ERZ-V20D180

Panasonic Electronic ComponentsIn Stock: 725ERZ-V20D180 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 0070.1181.A2 is determined by the following critical parameters:

• Varistor voltage rating (16–20 V range)
• Surge current capacity (3 kA minimum)
• Energy absorption capability (13 J minimum)
• Maximum AC and DC voltage ratings (11 V AC / 14 V DC)
• Single-circuit configuration
• Through-hole mounting compatibility
• RoHS3 compliance

The Panasonic ERZ-V20D180 meets all electrical specifications and compliance requirements. Physical package dimensions differ slightly (21.5mm vs. 20mm disc), which may require PCB layout verification but does not affect electrical performance or functional substitution.

Parameter Comparison

Engineering Selection Recommendations

The Panasonic ERZ-V20D180 is a direct electrical equivalent to the obsolete SCHURTER 0070.1181.A2. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

The primary consideration is the maximum operating temperature specification: the SCHURTER part is rated to 125°C, while the Panasonic substitute is rated to 85°C. For applications operating continuously above 85°C, the Panasonic part may not be suitable. For standard operating conditions within the 85°C limit, the Panasonic ERZ-V20D180 provides full functional equivalence.

The disc package diameter increases from 20mm to 21.5mm. PCB layout verification is required to confirm that the larger footprint accommodates existing mounting holes and clearance requirements without design modification.

Frequently Asked Questions (FAQ)

Q: Can the Panasonic ERZ-V20D180 be used as a direct replacement for the SCHURTER 0070.1181.A2?

A: Yes, electrically. All voltage ratings, surge current capacity, and energy absorption specifications are identical. Physical package dimensions differ slightly (21.5mm vs. 20mm), requiring PCB layout confirmation. Maximum operating temperature differs (85°C vs. 125°C); verify your application's thermal requirements.

Q: What is the significance of the capacitance difference (37000 pF vs. 40000 pF)?

A: The capacitance values are measured at 1 kHz and fall within normal manufacturing tolerances for varistor components. This 8% variance does not affect transient suppression performance in typical circuit applications.

Q: Does the 21.5mm disc package fit the existing 20mm mounting holes?

A: The 1.5mm diameter increase may exceed existing hole tolerances. Physical verification against your PCB design is required before implementation.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the SCHURTER 0070.1181.A2 and Panasonic ERZ-V20D180 are ROHS3 compliant and REACH unaffected.

Q: What is the product status difference between these parts?

A: The SCHURTER part is obsolete; the Panasonic ERZ-V20D180 is active. Active status indicates ongoing manufacturing and availability from Panasonic.