V140LT5 Littelfuse Varistor 220V 2.5kA Equivalent & Substitute Parts

Part Overview

The V140LT5 is a 220V 2.5kA disc varistor manufactured by Littelfuse, designed for transient voltage suppression in through-hole applications. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance requirements. The varistor provides overvoltage protection with a nominal voltage rating of 220V and surge current capacity of 2.5kA, suitable for industrial and commercial power protection circuits.

Key Parameters

Parameter	Value
Manufacturer Part Number	V140LT5
Manufacturer	Littelfuse
Category	Transient Voltage Suppressors (TVS)
Maximum AC Volts	140 V
Maximum DC Volts	180 V
Varistor Voltage (Typical)	220 V
Current - Surge	2.5 kA
Energy	22 J
Mounting Type	Through Hole
Package / Case	Disc 10mm
Operating Temperature Range	-55°C to 85°C
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the V140LT5 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Maximum AC Volts: 140 V
Maximum DC Volts: 180 V
Varistor Voltage (Min/Typ/Max): 198 V / 220 V / 242 V
Current - Surge: 2.5 kA
Energy: 22 J
Number of Circuits: 1
Capacitance @ Frequency: 400 pF @ 1 MHz
Operating Temperature Range: -55°C to 85°C
Mounting Type: Through Hole
Package / Case: Disc 10mm

All substitute parts maintain identical electrical specifications and physical form factor. Differences exist only in series designation (LT, LS, LU), packaging format (bulk vs. tape & reel), and product status (active vs. obsolete).

Parameter Comparison

Part Number	Series	Max AC (V)	Max DC (V)	Varistor Voltage Typ (V)	Surge Current (kA)	Energy (J)	Packaging	Product Status	Inventory (Pcs)
V140LT5	LT	140	180	220	2.5	22	Bulk	Obsolete	861
V140LT5P	LT	140	180	220	2.5	22	Tape & Reel	Active	1024
V140LT5PX2855	LT	140	180	220	2.5	22	Tape & Reel	Active	1083
V140LS5P	LS	140	180	220	2.5	22	Tape & Reel	Active	1135
V140LS5PX2855	LS	140	180	220	2.5	22	Tape & Reel	Active	790
V140LU5P	LU	140	180	220	2.5	22	Tape & Reel	Active	950
V140LU5PX2855	LU	140	180	220	2.5	22	Tape & Reel	Active	813

Engineering Selection Recommendations

Primary Selection Criteria:

The V140LT5 is obsolete; direct substitution requires selection from active product variants. All substitute parts maintain identical electrical performance and physical specifications.

For Bulk Packaging Requirements: No active bulk-packaged alternatives exist. All active substitutes are supplied in Tape & Reel format.

For Tape & Reel Packaging: V140LT5P, V140LT5PX2855, V140LS5P, V140LS5PX2855, V140LU5P, and V140LU5PX2855 are all qualified direct substitutes. Selection between series variants (LT, LS, LU) is determined by internal manufacturing or supply chain requirements, as electrical and mechanical parameters are identical.

Compliance Status: All substitute parts are ROHS3 compliant and carry REACH Unaffected status, meeting current regulatory requirements for industrial applications.

Inventory Availability: V140LS5P offers the highest current inventory (1135 pcs), followed by V140LT5PX2855 (1083 pcs) and V140LU5P (950 pcs).

Frequently Asked Questions (FAQ)

Q: Can V140LT5 be directly replaced with any of the listed substitutes? A: Yes. All substitute parts maintain identical electrical specifications (140V AC, 180V DC, 220V nominal varistor voltage, 2.5kA surge current, 22J energy) and physical form factor (10mm disc, through-hole mounting). The primary difference is product status (active vs. obsolete) and packaging format.

Q: What is the difference between V140LT5P and V140LT5PX2855? A: Both are LT series variants with identical electrical and mechanical specifications. The X2855 designation indicates a specific packaging or reel configuration. Electrical performance is equivalent.

Q: Why are there multiple series designations (LT, LS, LU)? A: Series designation reflects internal Littelfuse manufacturing classifications. All three series maintain identical electrical parameters and physical dimensions for this voltage and current rating, making them parametrically equivalent for circuit design purposes.

Q: Is tape & reel packaging compatible with through-hole assembly? A: Yes. Tape & reel is a supply format for automated assembly equipment. The individual components are identical 10mm disc varistors with through-hole leads, compatible with both manual and automated insertion processes.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification and REACH Unaffected status.

Q: Which substitute should be selected for new designs? A: Any active substitute part (V140LT5P, V140LT5PX2855, V140LS5P, V140LS5PX2855, V140LU5P, V140LU5PX2855) is suitable. Selection may be based on supply chain availability, packaging preference, or internal procurement specifications, as electrical performance is identical across all variants.

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