ERZ-E05B331CS Equivalent & Substitute Parts Reference

Part Overview

ERZ-E05B331CS is a Panasonic Electronic Components VARISTOR designed for transient voltage suppression. It features a varistor voltage of 330 V (typ), surge current capability of 1.2 kA, and is housed in a 7mm disc through-hole package. The product is currently listed as active with available inventory. Identifying substitute models is necessary for procurement flexibility, ensuring uninterrupted production and maintenance capabilities while maintaining compliance and electrical equivalence.

Key Parameters

Manufacturer Part Number	Maximum AC Volts	Maximum DC Volts	Varistor Voltage (Min)	Varistor Voltage (Typ)	Varistor Voltage (Max)	Current - Surge	Energy	Number of Circuits	Capacitance @ Frequency	Operating Temperature	Mounting Type	Package / Case	RoHS Status	MSL	REACH Status	Product Status
ERZ-E05B331CS	210 V	270 V	297 V	330 V	363 V	1.2 kA	21J	1	130 pF @ 1 kHz	-40°C ~ 85°C (TA)	Through Hole	Disc 7mm	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active

Substitute Part Grouping Explanation

Substitute part selection is strictly based on key electrical and mechanical parameters, including maximum AC and DC voltages, varistor voltage range, surge current, energy, number of circuits, capacitance at specified frequency, operating temperature range, mounting type, package/case format, RoHS status, moisture sensitivity level (MSL), REACH status, and product status. Only parts meeting all these parameters can be considered true equivalents.

Parameter Comparison

Parameter	ERZ-E05B331CS	ERZ-E05A331
Maximum AC Volts	210 V	210 V
Maximum DC Volts	270 V	270 V
Varistor Voltage (Min)	297 V	297 V
Varistor Voltage (Typ)	330 V	330 V
Varistor Voltage (Max)	363 V	363 V
Current - Surge	1.2 kA	1.2 kA
Energy	21J	21J
Number of Circuits	1	1
Capacitance @ Frequency	130 pF @ 1 kHz	130 pF @ 1 kHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Through Hole	Through Hole
Package / Case	Disc 7mm	Disc 7mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

Both ERZ-E05B331CS and its substitute ERZ-E05A331 are listed as active products with comparable certifications, including ROHS3 compliance and REACH unaffected status. Moisture Sensitivity Level (MSL) is identical, and both parts conform to all stated electrical and mechanical requirements. Part selection may proceed using either component as they share all mandated certifications and statuses.

Frequently Asked Questions (FAQ)

Q1: What are the main criteria for substituting ERZ-E05B331CS with ERZ-E05A331?
Substitution is based on matching key parameters: maximum AC/DC voltages, varistor voltage, surge current, energy rating, number of circuits, capacitance at frequency, operating temperature range, mounting type, package/case size, RoHS and REACH status, and product status.

Q2: Is the mechanical footprint of ERZ-E05A331 identical to ERZ-E05B331CS?
Both parts use the Disc 7mm through-hole package and share the same mounting type.

Q3: Does RoHS or REACH compliance differ between these models?
Both ERZ-E05B331CS and ERZ-E05A331 are ROHS3 compliant and REACH unaffected.

Q4: What documentation should be checked before selecting a substitute?
Verification should include only the compliance and certifications explicitly listed (ROHS, REACH, MSL) as well as product status.

Q5: Is there any difference in operating temperature range between these parts?
Both parts share the same operating temperature range: -40°C ~ 85°C (TA).

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