Equivalent & Substitute Parts for SCHURTER Inc. 0070.1421.A2

Part Overview

Manufacturer part number 0070.1421.A2 from SCHURTER Inc. is a transient voltage suppressor varistor, classified under the product category of disc varistors. The device features a 22 V nominal varistor voltage, a 500 A surge current rating, and a 7mm disc through-hole package. The part is currently marked as obsolete, necessitating identification of compatible substitute models to ensure continuity of design and production processes.

Key Parameters

Parameter	Main Part Value	Description
Maximum AC Volts	14 V	Maximum continuous RMS AC voltage
Maximum DC Volts	18 V	Maximum continuous DC voltage
Varistor Voltage (Min)	20 V	Minimum varistor clamp voltage
Varistor Voltage (Typical)	22 V	Nominal varistor clamp voltage
Varistor Voltage (Max)	24 V	Maximum varistor clamp voltage
Current - Surge	500 A	Maximum surge current
Energy	1.3J	Maximum energy absorption
Number of Circuits	1	Number of independent varistor elements
Capacitance @ Frequency	2800 pF @ 1 kHz	Rated capacitance
Operating Temperature	-40°C ~ 125°C (TA)	Ambient operating temperature range
Mounting Type	Through Hole	Mounting style
Package / Case	Disc 7mm	Physical package dimensions
RoHS Status	ROHS3 Compliant	Environmental compliance
REACH Status	REACH Unaffected	Chemical regulation status

Substitute Part Grouping Explanation

Substitution of the SCHURTER Inc. 0070.1421.A2 varistor is determined by strict matching on the following key electrical and mechanical parameters:

Maximum AC and DC voltage ratings
Varistor voltage range (minimum, typical, maximum)
Surge current capability
Energy absorption rating
Physical mounting type and base package dimensions
Operating temperature range
Environmental compliance certifications (RoHS, REACH)

Only parts meeting all specified values within the given ranges and regulatory requirements are considered suitable substitutes.

Parameter Comparison

Parameter	SCHURTER Inc. 0070.1421.A2	Panasonic ERZ-V07D220
Maximum AC Volts	14 V	14 V
Maximum DC Volts	18 V	18 V
Varistor Voltage (Min)	20 V	20 V
Varistor Voltage (Typical)	22 V	22 V
Varistor Voltage (Max)	24 V	24 V
Current - Surge	500 A	500 A
Energy	1.3J	1.3J
Number of Circuits	1	1
Capacitance @ Frequency	2800 pF @ 1 kHz	3600 pF @ 1 kHz
Operating Temperature	-40°C ~ 125°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Through Hole	Through Hole
Package / Case	Disc 7mm	Disc 8.5mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The SCHURTER Inc. 0070.1421.A2 varistor is obsolete, making direct substitution necessary for new designs and legacy maintenance. Substitute parts must comply with required RoHS3 and REACH standards and provide matching or compatible mechanical format. Based on provided compliance certifications, ERZ-V07D220 from Panasonic Electronic Components is a valid substitute meeting all stated regulatory requirements and environmental statuses.

Frequently Asked Questions (FAQ)

Q1: What parameters must match for a varistor substitution?
A1: Substitute selection is governed by electrical ratings (maximum AC/DC voltage, varistor voltage min/typ/max, surge current, energy), mechanical format (mounting type, package size), number of circuits, operating temperature, and regulatory compliance.

Q2: Is package size critical for substituting 0070.1421.A2 with ERZ-V07D220?
A2: Both parts are through-hole disc varistors; however, ERZ-V07D220 features an 8.5mm disc versus 7mm for 0070.1421.A2. Physical compatibility should be verified based on system design constraints.

Q3: How does operating temperature impact substitute selection?
A3: ERZ-V07D220 provides an operating temperature range of -40°C to 85°C compared to the original's -40°C to 125°C. Application requirements for ambient temperature must align with the available range.

Q4: Are both parts RoHS3 and REACH compliant?
A4: Both SCHURTER Inc. 0070.1421.A2 and Panasonic ERZ-V07D220 are listed as ROHS3 Compliant and REACH Unaffected.

Q5: Can ERZ-V07D220 be directly installed in place of 0070.1421.A2?
A5: Electrical and environmental parameters match. Mounting type and package size are similar but must be reviewed for footprint compatibility in the intended PCB layout.

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