Littelfuse V47ZT3 Equivalent & Substitute Parts

Part Overview

The Littelfuse V47ZT3 is a 47 V, 500 A transient voltage suppressor varistor in a through-hole disc 10mm package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The V47ZT3 operates across a temperature range of -55°C to 85°C and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	47 V
Varistor Voltage Range	42.3 V (Min) to 51.7 V (Max)
Current - Surge	500 A
Energy Absorption	4.5 J
Maximum AC Voltage	30 V
Maximum DC Voltage	38 V
Capacitance @ 1 MHz	2590 pF
Operating Temperature Range	-55°C to 85°C
Number of Circuits	1
Mounting Type	Through Hole
Package / Case	Disc 10mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the V47ZT3 is based on strict electrical and mechanical parameter matching. All substitute parts maintain identical specifications across the following critical parameters:

Varistor voltage range: 42.3 V (Min) to 51.7 V (Max), with 47 V typical
Surge current capacity: 500 A
Energy absorption: 4.5 J
Maximum AC/DC voltage ratings: 30 V AC / 38 V DC
Capacitance: 2590 pF @ 1 MHz
Operating temperature: -55°C to 85°C
Package configuration: Through-hole disc 10mm
Compliance: ROHS3 compliant, MSL 1

Substitute parts are differentiated by series designation (ZT, ZS, ZU) and packaging format (bulk or tape & reel). All listed substitutes are active products with current manufacturing status, eliminating obsolescence risk.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Packaging	Varistor Voltage (Typ)	Surge Current	Energy	Max AC / DC Volts	Operating Temp	Inventory (Pcs)
V47ZT3	Littelfuse	ZT	Obsolete	Bulk	47 V	500 A	4.5 J	30 V / 38 V	-55°C to 85°C	704
V47ZT3P	Littelfuse Inc.	ZT	Active	Tape & Reel	47 V	500 A	4.5 J	30 V / 38 V	-55°C to 85°C	878
V47ZS3P	Littelfuse Inc.	ZS	Active	Tape & Reel	47 V	500 A	4.5 J	30 V / 38 V	-55°C to 85°C	791
V47ZS3PX1347	Littelfuse Inc.	ZS	Active	Tape & Reel	47 V	500 A	4.5 J	30 V / 38 V	-55°C to 85°C	983
V47ZS3PX2855	Littelfuse Inc.	ZS	Active	Tape & Reel	47 V	500 A	4.5 J	30 V / 38 V	-55°C to 85°C	813
V47ZT3PX2855	Littelfuse Inc.	ZT	Active	Tape & Reel	47 V	500 A	4.5 J	30 V / 38 V	-55°C to 85°C	658
V47ZU3P	Littelfuse Inc.	ZU	Active	Tape & Reel	47 V	500 A	4.5 J	30 V / 38 V	-55°C to 85°C	663
V47ZU3PX2855	Littelfuse Inc.	ZU	Active	Tape & Reel	47 V	500 A	4.5 J	30 V / 38 V	-55°C to 85°C	1040

Engineering Selection Recommendations

All substitute parts listed are active products manufactured by Littelfuse Inc. and maintain full electrical and mechanical equivalence to the obsolete V47ZT3. Selection between substitutes depends on procurement requirements:

For manual assembly or low-volume applications, V47ZT3P (ZT series, tape & reel) provides the closest direct replacement with identical series designation and active product status.

For applications requiring alternative series options, V47ZS3P, V47ZS3PX1347, V47ZS3PX2855, V47ZU3P, and V47ZU3PX2855 are fully equivalent alternatives across all electrical parameters and operating conditions.

For high-volume automated assembly, tape & reel packaging variants (all listed substitutes except the original V47ZT3) are standard. The V47ZU3PX2855 variant offers the highest current inventory level at 1040 pieces.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can V47ZT3 be directly replaced with V47ZT3P? A: Yes. V47ZT3P is a direct substitute with identical electrical specifications, series designation, and through-hole disc 10mm package. The primary difference is packaging format (tape & reel versus bulk) and active product status.

Q: What is the difference between ZT, ZS, and ZU series variants? A: All three series (ZT, ZS, ZU) maintain identical electrical parameters for the 47 V, 500 A varistor specification. Series designation reflects internal manufacturing or design revision. Electrical and mechanical compatibility is complete across all series variants listed.

Q: Are the "PX" suffix variants (V47ZS3PX1347, V47ZS3PX2855, V47ZT3PX2855, V47ZU3PX2855) equivalent to base part numbers? A: Yes. The "PX" suffix with numeric codes indicates packaging or tape configuration variants. All electrical specifications, operating temperature range, and performance characteristics remain identical to base part numbers.

Q: Can I use these substitutes in existing PCB designs without modification? A: Yes. All substitute parts use identical through-hole disc 10mm package configuration and maintain the same pin/lead spacing. No PCB layout changes are required.

Q: What is the inventory status for these substitutes? A: All substitute parts are currently in stock as active products. Inventory levels range from 658 to 1040 pieces, providing supply continuity for the obsolete V47ZT3.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original V47ZT3.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message