LAPP 79040400 Hood Connector Top Entry M25 HB10 Equivalent & Substitute Parts

Part Overview

The LAPP 79040400 is an EPIC® HB series heavy duty connector hood designed for top entry applications with M25 thread size. This accessory component provides IP65 ingress protection (dust tight, water resistant) and operates across -40°C to 100°C. The part is currently active in production with 1,028 units in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling direct functional replacement in applications where the main part is unavailable or when inventory constraints require alternative sourcing.

Substiute Parts

79040400

LAPPIn Stock: 108779040400 Datasheet

Current PartRFQ

19300100736

HARTINGIn Stock: 76919300100736 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LAPP 79040400 is determined by the following critical parameters:

Primary Matching Criteria:

• Thread Size: M25 (mechanical interface requirement)
• Ingress Protection: IP65 minimum (environmental sealing specification)
• Housing Material: Aluminum or Aluminum Alloy (structural and thermal properties)
• Connector Type: Hood (functional classification)
• Size Category: HB10 or equivalent 10B (dimensional compatibility)

Secondary Compatibility Factors:

• Operating Temperature Range: Minimum -40°C to 100°C coverage
• Housing Finish: Powder Coated (corrosion resistance)
• Product Status: Active (ongoing manufacturing and support)

The identified substitute part HARTING 19300100736 meets these criteria with M25 threading, IP65 protection, aluminum die-cast housing, and compatible dimensional envelope. Differences in entry style (bottom vs. top) and locking mechanism location represent design variations within the same functional category and do not preclude substitution in applications where connector orientation can be accommodated.

Parameter Comparison

Engineering Selection Recommendations

LAPP 79040400 (Primary Selection)

• Active product status with confirmed manufacturing support
• 1,028 units in current inventory
• Specified operating range -40°C to 100°C
• Top entry configuration for applications requiring cable entry from above

HARTING 19300100736 (Substitute Selection)

• Active product status with confirmed manufacturing support
• 729 units in current inventory
• Extended operating range -40°C to 125°C provides additional thermal margin
• Bottom entry configuration requires application geometry compatibility
• RoHS3 compliance and REACH unaffected status documented
• MSL rating 1 (Unlimited) indicates no moisture sensitivity constraints

Both parts share identical M25 threading, IP65 ingress protection, aluminum housing with powder coating, and EAR99/HTSUS classification. Selection between primary and substitute should be based on:

1. Physical installation orientation (top entry vs. bottom entry requirement)
2. Thermal operating environment (100°C vs. 125°C maximum)
3. Inventory availability and lead time
4. Locking mechanism compatibility with mating connector design

Frequently Asked Questions (FAQ)

Q: Can HARTING 19300100736 directly replace LAPP 79040400 in all applications?

A: Direct replacement is possible when application geometry accommodates bottom entry orientation instead of top entry. Both parts share M25 threading, IP65 protection, and compatible dimensional envelopes (difference <0.5mm in all axes). Verify mating connector compatibility with the locking clip configuration (1 clip on base bottom vs. 2 clips on hood top).

Q: What is the significance of the size designation difference (HB10 vs. 10B)?

A: HB10 and 10B are manufacturer-specific size designations within their respective series (EPIC® HB and Han® B). Both represent equivalent size categories with compatible M25 threading and dimensional specifications. The designations reflect different product line nomenclature rather than functional incompatibility.

Q: Are there compliance or certification differences between these parts?

A: Both parts carry EAR99 ECCN classification and 8538.90.8180 HTSUS code. HARTING 19300100736 includes documented RoHS3 compliance and REACH unaffected status. LAPP 79040400 product status is listed as Active without additional compliance documentation in the provided specification.

Q: What is the impact of the extended temperature range on HARTING 19300100736?

A: The HARTING part operates to 125°C maximum versus 100°C for the LAPP part. This represents a 25°C additional thermal margin and does not create incompatibility. Applications operating below 100°C can use either part without thermal constraint consideration.

Q: How do the locking mechanisms differ between these connectors?

A: LAPP 79040400 features a single locking clip on the base bottom. HARTING 19300100736 features two locking clips on the hood top. These represent different mechanical locking strategies within their respective connector families. Compatibility depends on mating connector design and must be verified for specific applications.

Q: What packaging and inventory considerations apply to substitution?

A: Both parts are supplied in bulk packaging. LAPP 79040400 has 1,028 units in stock; HARTING 19300100736 has 729 units in stock. Substitution decisions may be influenced by inventory availability and procurement lead times from respective manufacturers.