SP1004-04VTG Equivalent & Substitute Parts

Part Overview

The SP1004-04VTG is a 4-channel bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This device features a 6V reverse standoff voltage, 12V typical clamping voltage, and 2A peak pulse current rating in a SOT-953 package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing.

Substiute Parts

SP1004-04VTG

Littelfuse Inc.In Stock: 1315SP1004-04VTG Datasheet

Current PartRFQ

NUP45V6P5T5G

onsemiIn Stock: 37371NUP45V6P5T5G Datasheet

DirectRFQ

PESD5V0U4BF,115

NXP SemiconductorsIn Stock: 11095PESD5V0U4BF,115 Datasheet

MFR RecommendedRFQ

PESD5V0U4BW,115

Nexperia USA Inc.In Stock: 11351PESD5V0U4BW,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SP1004-04VTG is determined by the following critical parameters:

• Package compatibility: SOT-953 surface-mount package for direct PCB footprint replacement
• Channel configuration: 4-channel architecture for multi-line protection
• Voltage rating alignment: Reverse standoff voltage and clamping voltage within acceptable operating ranges
• Current handling: Peak pulse current capability matching or exceeding 2A (8/20µs)
• Bidirectional protection: Capability to suppress transients on both positive and negative voltage excursions
• Compliance standards: RoHS3 compliance and MSL rating for manufacturing compatibility

The substitute parts listed below meet these core substitution criteria while maintaining functional equivalence for general-purpose transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

NUP45V6P5T5G (onsemi): This part maintains SOT-953 package compatibility and 4-channel configuration. It is actively manufactured and AEC-Q101 qualified for automotive applications. The lower peak pulse current rating (1A versus 2A) and reduced clamping voltage (10.5V versus 12V) require circuit-level verification to confirm adequate protection margins for the target application.

PESD5V0U4BF,115 (NXP Semiconductors): This part is actively produced and RoHS3 compliant. Limited parameter data is provided in the specification. Direct package and electrical compatibility must be confirmed through detailed datasheet review before implementation.

PESD5V0U4BW,115 (Nexperia USA Inc.): This part is actively manufactured with AEC-Q101 automotive qualification and extended operating temperature range (-55°C ~ 150°C). The SOT-665 package differs from the original SOT-953, requiring PCB layout modification. The 5V reverse standoff voltage and 5.5V breakdown voltage represent lower voltage ratings compared to the main part.

All substitute parts maintain RoHS3 compliance and MSL Level 1 rating, ensuring manufacturing process compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can NUP45V6P5T5G be used as a direct replacement for SP1004-04VTG?

A: NUP45V6P5T5G maintains the same SOT-953 package and 4-channel configuration, enabling direct PCB footprint compatibility. However, the peak pulse current is reduced from 2A to 1A, and clamping voltage is reduced from 12V to 10.5V. Circuit analysis is required to confirm these lower ratings provide adequate protection for the specific application.

Q: What is the primary difference between NUP45V6P5T5G and the PESD5V0U4 series?

A: NUP45V6P5T5G is unidirectional with 4 channels, while PESD5V0U4BF,115 and PESD5V0U4BW,115 are bidirectional with 4 channels. The bidirectional configuration of the PESD5V0U4 series provides protection against transients in both voltage directions, matching the original SP1004-04VTG functionality.

Q: Why does PESD5V0U4BW,115 use a different package (SOT-665) instead of SOT-953?

A: PESD5V0U4BW,115 is manufactured in SOT-665 package, which differs from the original SOT-953. This package change requires PCB redesign and cannot be used as a direct drop-in replacement without layout modifications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts are RoHS3 compliant and carry MSL Level 1 rating, maintaining compatibility with standard manufacturing processes.

Q: Which substitute part has the broadest operating temperature range?

A: Both NUP45V6P5T5G and PESD5V0U4BW,115 support -55°C ~ 150°C operating temperature, exceeding the original SP1004-04VTG range of -40°C ~ 125°C.

Q: Do the substitute parts have automotive qualification?

A: NUP45V6P5T5G and PESD5V0U4BW,115 are both AEC-Q101 qualified for automotive applications. PESD5V0U4BF,115 qualification status is not specified in the provided data.