V10E320 Equivalent & Substitute Parts

Part Overview

The V10E320 is a 510 V, 4.6 kA disc varistor from Littelfuse Inc.'s UltraMOV™ series, designed for transient voltage suppression in through-hole applications. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing procurement and system maintenance. The varistor provides single-circuit protection with a 10mm disc form factor and operates across a temperature range of -55°C to 85°C.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	510 V
Current - Surge	4.6 kA
Maximum AC Volts	320 V
Maximum DC Volts	420 V
Energy	67 J
Number of Circuits	1
Mounting Type	Through Hole
Package / Case	Disc 10mm
Operating Temperature	-55°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the V10E320 is determined by the following critical parameters:

Varistor voltage range: 459 V (minimum) to 561 V (maximum)
Surge current rating: 4.6 kA
Mounting type: Through hole
Package form factor: Disc 10mm
Number of circuits: 1
Maximum AC voltage: 320 V
Maximum DC voltage: 420 V or higher
Operating temperature range: Must encompass or match the application requirements

Parts meeting all these criteria are electrically and mechanically compatible with the V10E320 and may be used as direct substitutes in the same circuit design without modification.

Parameter Comparison

Parameter	V10E320	V10E320P	ERZ-V10D511
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Panasonic Electronic Components
Series	UltraMOV™	UltraMOV™	ZNR®
Product Status	Obsolete	Active	Active
Varistor Voltage (Min)	459 V	459 V	459 V
Varistor Voltage (Typ)	510 V	510 V	510 V
Varistor Voltage (Max)	561 V	561 V	561 V
Current - Surge	4.6 kA	4.6 kA	4.6 kA
Maximum AC Volts	320 V	320 V	320 V
Maximum DC Volts	420 V	420 V	410 V
Energy	67 J	67 J	92 J
Number of Circuits	1	1	1
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Disc 10mm	Disc 10mm	Disc 10mm
Operating Temperature	-55°C ~ 85°C	-55°C ~ 85°C	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Not Applicable

Engineering Selection Recommendations

V10E320P is the primary substitute for the obsolete V10E320. Both parts are manufactured by Littelfuse Inc. within the same UltraMOV™ series and share identical electrical specifications and packaging. The V10E320P is currently in active production status with significantly higher inventory availability (9,749 pieces in stock versus 776 pieces for the original part). Both parts carry ROHS3 compliance and identical moisture sensitivity ratings.

ERZ-V10D511 from Panasonic Electronic Components is a secondary substitute option. This part meets all critical electrical parameters and maintains the same 10mm disc through-hole form factor. The ERZ-V10D511 offers higher energy absorption capacity (92 J versus 67 J) and is actively produced. However, the maximum DC voltage specification is 410 V compared to 420 V for the Littelfuse parts, and the operating temperature range is -40°C to 85°C rather than -55°C to 85°C. These differences must be evaluated against specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can V10E320P be used as a direct replacement for V10E320?

A: Yes. V10E320P is electrically and mechanically identical to V10E320, with the same varistor voltage (510 V typical), surge current rating (4.6 kA), and 10mm disc through-hole package. The primary difference is product status: V10E320P is actively manufactured while V10E320 is obsolete.

Q: What are the key differences between V10E320P and ERZ-V10D511?

A: Both parts share the same varistor voltage (510 V typical) and surge current rating (4.6 kA). Differences include: maximum DC voltage (420 V for V10E320P versus 410 V for ERZ-V10D511), energy rating (67 J versus 92 J), operating temperature range (-55°C to 85°C versus -40°C to 85°C), and manufacturer (Littelfuse versus Panasonic).

Q: Is the ERZ-V10D511 suitable for applications requiring -55°C operation?

A: No. The ERZ-V10D511 operating temperature range begins at -40°C. If the application requires operation at -55°C, the V10E320P must be used.

Q: Does the higher energy rating of ERZ-V10D511 affect substitution compatibility?

A: Higher energy absorption capacity does not prevent substitution. The ERZ-V10D511 can absorb greater transient energy than the original specification. However, the lower maximum DC voltage (410 V versus 420 V) must be verified against circuit requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. V10E320P and ERZ-V10D511 are both ROHS3 compliant, matching the compliance status of the original V10E320.

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