NorComp 171-050-202-021 D-Sub Receptacle Equivalent & Substitute Parts

Part Overview

The NorComp 171-050-202-021 is a 50-position D-Sub receptacle connector with female sockets, designed for panel mount applications. This connector features a 3-row configuration with solder cup termination and operates across a temperature range of -50°C to 100°C. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Connector Style	D-Sub
Connector Type	Receptacle, Female Sockets
Number of Positions	50
Number of Rows	3
Shell Size, Connector Layout	5 (DD, D)
Mounting Type	Panel Mount
Termination	Solder Cup
Current Rating	5A
Operating Temperature	-50°C ~ 100°C
Wire Gauge	20-28 AWG
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility for the 171-050-202-021 is determined by strict equivalence across the following critical parameters: connector style (D-Sub), connector type (receptacle with female sockets), position count (50), row configuration (3), shell size (5/DD, D), mounting type (panel mount), termination method (solder cup), current rating (5A), operating temperature range (-50°C ~ 100°C), and wire gauge compatibility (20-28 AWG).

The substitute parts 171-050-202L021 and 171-050-203L021 maintain full compatibility across all mechanical and electrical parameters. Variations in shell material finish (tin plated versus nickel plated), dielectric material composition (standard versus glass-filled PBT), packaging format (tray), and compliance certifications (RoHS3 compliance status) do not affect functional interchangeability within the specified parameter constraints.

Parameter Comparison

Parameter	171-050-202-021	171-050-202L021	171-050-203L021
Manufacturer	NorComp Inc.	NorComp Inc.	NorComp Inc.
Connector Style	D-Sub	D-Sub	D-Sub
Connector Type	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets
Number of Positions	50	50	50
Number of Rows	3	3	3
Shell Size, Connector Layout	5 (DD, D)	5 (DD, D)	5 (DD, D)
Mounting Type	Panel Mount	Panel Mount	Panel Mount
Termination	Solder Cup	Solder Cup	Solder Cup
Shell Material, Finish	Steel, Tin Plated	Steel, Tin Plated	Steel, Nickel Plated
Contact Finish	Gold	Gold	Gold
Contact Finish Thickness	Flash	Flash	Flash
Current Rating (Amps)	5A	5A	5A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Dielectric Material	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT), Glass Filled
Wire Gauge	20-28 AWG	20-28 AWG	20-28 AWG
Operating Temperature	-50°C ~ 100°C	-50°C ~ 100°C	-50°C ~ 100°C
Product Status	Obsolete	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Not specified	Tray	Tray

Engineering Selection Recommendations

For new designs and ongoing procurement, 171-050-203L021 is the primary selection. This part maintains active product status with NorComp Inc., ensuring long-term availability and supply chain stability. It carries ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing and distribution.

The 171-050-202L021 serves as a secondary alternative, offering ROHS3 compliance while retaining the tin-plated shell finish of the original 171-050-202-021. This part is classified as obsolete but remains available in inventory.

The original 171-050-202-021 is functionally equivalent but carries obsolete status and lacks RoHS3 compliance. Use of this part should be limited to legacy system maintenance where component replacement is necessary for existing installations.

Frequently Asked Questions (FAQ)

Q: Can 171-050-202L021 and 171-050-203L021 be used interchangeably with 171-050-202-021?

A: Yes. All three parts maintain identical mechanical and electrical specifications across connector style, position count, row configuration, shell size, mounting type, termination method, current rating, operating temperature range, and wire gauge. The parts are functionally interchangeable.

Q: What is the difference between the tin-plated and nickel-plated shell finishes?

A: Shell material finish does not affect electrical or mechanical interchangeability. Both finishes provide corrosion protection. Selection between tin-plated (171-050-202-021 and 171-050-202L021) and nickel-plated (171-050-203L021) variants depends on application-specific environmental and corrosion resistance requirements.

Q: Does the glass-filled dielectric material in 171-050-203L021 affect compatibility?

A: No. The glass-filled polybutylene terephthalate (PBT) dielectric in 171-050-203L021 maintains the same electrical and mechanical properties required for D-Sub receptacle applications. This material enhancement does not impact interchangeability.

Q: Why is 171-050-203L021 recommended over the other options?

A: 171-050-203L021 carries active product status with NorComp Inc. and meets ROHS3 compliance requirements. Active status ensures continued availability and supply chain support. Obsolete parts may face procurement challenges and limited future availability.

Q: Are there packaging differences between these parts?

A: The original 171-050-202-021 packaging is not specified. Both 171-050-202L021 and 171-050-203L021 are supplied in tray packaging. Packaging format does not affect connector functionality or interchangeability.

Q: What compliance certifications apply to these connectors?

A: All three parts carry UL94 V-0 material flammability rating. The 171-050-202L021 and 171-050-203L021 are ROHS3 compliant. The original 171-050-202-021 is RoHS non-compliant. REACH status is unaffected for all variants.

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