A-DF37LL-TL-B-R D-Sub Receptacle Connector Equivalent & Substitute Parts

Part Overview

The A-DF37LL-TL-B-R is a 37-position D-Sub receptacle connector manufactured by Assmann WSW Components, featuring female sockets with solder cup termination. This connector is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance, repair, and component procurement. The part operates within industrial temperature ranges and meets UL94 V-0 flammability standards, serving applications requiring reliable signal transmission in D-Sub configurations.

Substiute Parts

A-DF37LL-TL-B-R

Assmann WSW ComponentsIn Stock: 938A-DF37LL-TL-B-R Datasheet

Current PartRFQ

A-DF 37 LL/Z

Assmann WSW ComponentsIn Stock: 2014A-DF 37 LL/Z Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A-DF37LL-TL-B-R is determined by strict equivalence across the following critical parameters:

Connector configuration parameters: D-Sub style, receptacle type with female sockets, 37-position layout in 2-row configuration, and shell size 4 (DC, C) designation.

Electrical specifications: 250V voltage rating and 3A current rating for signal contact applications.

Termination and mechanical interface: Solder cup termination method and free hanging in-line mounting type.

Material and environmental compliance: Steel shell with gold-flash contact finish, brass contact material, PBT glass-filled dielectric, and UL94 V-0 flammability rating.

Operating conditions: Temperature range of -55°C to 105°C and MSL 1 rating.

The substitute part A-DF 37 LL/Z maintains complete electrical and mechanical equivalence across all specified parameters while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The A-DF 37 LL/Z is the direct functional equivalent for the obsolete A-DF37LL-TL-B-R. Selection of the substitute part is justified by:

Complete parameter equivalence across all electrical, mechanical, and environmental specifications.

Active product status ensuring continued availability and supply chain reliability.

Identical compliance certifications including UL94 V-0 flammability rating and REACH unaffected status.

Same manufacturer origin, eliminating cross-manufacturer compatibility variables.

For applications currently using the A-DF37LL-TL-B-R, direct substitution with A-DF 37 LL/Z requires no circuit redesign, PCB layout modification, or connector interface changes. The parts are mechanically and electrically interchangeable.

Frequently Asked Questions (FAQ)

Q: Can A-DF 37 LL/Z be used as a direct replacement for A-DF37LL-TL-B-R?

A: Yes. Both parts share identical specifications across connector configuration, electrical ratings, termination method, material composition, and environmental operating parameters. No design modifications are required.

Q: What is the primary difference between these two part numbers?

A: The main difference is product status. A-DF37LL-TL-B-R is obsolete, while A-DF 37 LL/Z is active. Additionally, A-DF 37 LL/Z is supplied in tray packaging and carries RoHS3 compliance certification.

Q: Are there any packaging considerations when switching to the substitute part?

A: The substitute part A-DF 37 LL/Z is supplied in tray packaging, whereas the original part number does not specify packaging format. Verify that tray packaging is compatible with your receiving, storage, and assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are REACH unaffected, classified as EAR99 for export control purposes, and meet UL94 V-0 flammability requirements. The substitute part additionally carries RoHS3 compliance certification.

Q: What is the temperature operating range for these connectors?

A: Both parts operate across -55°C to 105°C, suitable for industrial and extended temperature applications.

Q: Are the electrical ratings identical?

A: Yes. Both parts are rated for 250V voltage and 3A current on signal contacts, with identical contact material (brass) and finish specifications (gold flash).