L77SDB25SA4CH3F – D-Sub Receptacle 25-Position Equivalent & Substitute Parts

Part Overview

The L77SDB25SA4CH3F is a 25-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole, right-angle solder termination connector is Active in product status and suitable for general signal applications requiring rated voltage operation up to 250V. Substitute parts are necessary when primary availability is limited, when specific packaging requirements differ, or when alternative flange and termination configurations better serve application assembly methods.

Substiute Parts

L77SDB25SA4CH3F

Amphenol ICC (Commercial Products)In Stock: 1213L77SDB25SA4CH3F Datasheet

Current PartRFQ

09663126603

HARTINGIn Stock: 124109663126603 Datasheet

SimilarRFQ

09663526613

HARTINGIn Stock: 112209663526613 Datasheet

SimilarRFQ

09663527613

HARTINGIn Stock: 97109663527613 Datasheet

SimilarRFQ

1-106507-2

TE Connectivity AMP ConnectorsIn Stock: 16361-106507-2 Datasheet

SimilarRFQ

3-106507-2

TE Connectivity AMP ConnectorsIn Stock: 11593-106507-2 Datasheet

SimilarRFQ

8-106507-2

TE Connectivity AMP ConnectorsIn Stock: 15258-106507-2 Datasheet

SimilarRFQ

D25S13A4GV00LF

Amphenol ICC (FCI)In Stock: 1597D25S13A4GV00LF Datasheet

SimilarRFQ

D25S13A4GX00LF

Amphenol ICC (FCI)In Stock: 10283D25S13A4GX00LF Datasheet

SimilarRFQ

D25S13A4PA00LF

Amphenol ICC (FCI)In Stock: 1293D25S13A4PA00LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Equivalent and substitute parts for the L77SDB25SA4CH3F are classified based on the following criteria:

Critical Parameters (Must Match):

• Connector type: Receptacle, Female Sockets
• Position count: 25 positions
• Shell size: 3 (DB, B) layout
• Mounting orientation: Right Angle
• Termination: Solder
• Operating temperature range: -55°C to 125°C
• Material flammability rating: UL94 V-0

Allowable Variations:

• Current rating: 3A to 6.5A (higher amperage ratings are acceptable)
• Voltage rating: 125V to 300V (higher voltage ratings are acceptable)
• Backset spacing: 0.318" to 0.409" (minor pitch variations within manufacturing tolerance application context)
• Shell finish: Steel with Tin Plated, Tin-Nickel Plated, or unspecified finish
• Contact finish: Gold or unspecified (Gold is standard)
• Flange configuration: Female Screwlock (M3 or 4-40) or Housing/Shell threaded/unthreaded
• Packaging: Tray or Bulk

The provided substitute parts fall into two distinct groups based on manufacturer and series designation:

Group 1: HARTING 09663126603, 09663526613, 09663527613 Higher current rating (6.5A), different backset spacing (0.409"), unspecified voltage rating, PBT dielectric material.

Group 2: TE Connectivity AMP (AMPLIMITE HD-20) 1-106507-2, 3-106507-2, 8-106507-2 6A current rating, Gold-plated contacts (30µin thickness), lower operating temperature maximum (105°C vs. 125°C), tin-plated steel shell, panel mount option available.

Group 3: Amphenol ICC (FCI) Delta D Series D25S13A4GV00LF, D25S13A4GX00LF, D25S13A4PA00LF 5A per contact rating, higher voltage rating (300V), tin-nickel plated steel shell, alternative flange configurations, ROHS3 Compliant, larger backset spacing (0.409").

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: Amphenol ICC (FCI) Delta D Series (D25S13A4GV00LF, D25S13A4GX00LF, D25S13A4PA00LF)

These parts maintain the same manufacturer family (Amphenol ICC) and operating temperature range (-55°C to 125°C) as the L77SDB25SA4CH3F. They provide higher voltage rating (300V), supporting applications requiring greater electrical stress tolerance. ROHS3 compliance provides newer regulatory alignment. The tin-nickel plated steel shell offers enhanced corrosion resistance compared to standard tin plating. High inventory availability (1,250 to 10,200 units) ensures supply continuity.

Secondary Recommendation: TE Connectivity AMP AMPLIMITE HD-20 Series (1-106507-2, 3-106507-2, 8-106507-2)

These parts are suitable for applications where operating temperature maximum of 105°C is acceptable and voltage requirement does not exceed 125V. ROHS3 compliance and tin-plated steel shell with specified gold contact thickness (30µin) support high-reliability applications. Higher current rating (6A) accommodates increased amperage demand. Tray packaging (1-106507-2) matches the main part packaging preference.

Conditional Recommendation: HARTING Series (09663126603, 09663526613, 09663527613)

Selection from the HARTING series is appropriate when backset spacing of 0.409" matches PCB layout requirements and current requirement reaches 6.5A. ROHS3 compliance and UL94 V-0 rating match safety standards. The absence of specified contact and voltage ratings requires application engineering review to confirm suitability within intended electrical operating envelope.

Frequently Asked Questions (FAQ)

Q: Can the HARTING 09663126603 be used in place of L77SDB25SA4CH3F if my application requires 6.5A current handling?

A: The HARTING 09663126603 shares critical parameters (25 positions, shell size 3, right-angle solder termination, -55°C to 125°C temperature range, UL94 V-0 rating) and provides the required higher current rating. However, backset spacing differs (0.409" versus 0.318"), which affects PCB layout compatibility. Application layout must be verified for accommodation.

Q: What is the significance of backset spacing variation (0.318" versus 0.409")?

A: Backset spacing is the distance from the connector mounting face to the center of the first row of contacts. Different backset values require different PCB via and trace routing patterns. Parts with different backset values are not directly interchangeable on the same PCB without layout redesign.

Q: Why do some substitute parts show no specified voltage rating?

A: Voltage rating is a critical design parameter. Parts with unspecified voltage rating in the provided data require cross-reference to complete manufacturer datasheets prior to selection for applications requiring specific voltage operation thresholds.

Q: Is the TE Connectivity part suitable if my application operates at 150°C?

A: No. The TE Connectivity AMP parts (1-106507-2, 3-106507-2, 8-106507-2) specify maximum operating temperature of 105°C. The L77SDB25SA4CH3F and Amphenol ICC Delta D series support -55°C to 125°C operation. For 150°C operation, neither the main part nor these substitutes are rated.

Q: What packaging options are available?

A: Tray and Bulk packaging are provided across the substitute parts. L77SDB25SA4CH3F is supplied in Tray. For applications requiring bulk quantities, HARTING 09663126603, 09663527613, and TE Connectivity 3-106507-2, 8-106507-2 are available in Bulk packaging.

Q: Are all parts RoHS compliant?

A: Yes. The L77SDB25SA4CH3F meets RoHS Compliance. The substitute parts meet either RoHS Compliant or ROHS3 Compliant status. ROHS3 Compliant parts incorporate newer regulatory requirements and are suitable for current design platforms.

Q: Can screwlock flange types (M3 vs. 4-40) be intermixed?

A: No. Flange screw sizes are not compatible. M3 (metric) screws do not interchange with 4-40 (imperial) screws. Housing/Shell (unthreaded) flanges require different mounting approaches. Flange type selection must match mating hardware and installation method.