953224-2000-AR-TP Equivalent & Substitute Parts

Part Overview

The 3M 953224-2000-AR-TP is a 24-position rectangular receptacle connector with 0.079" (2.00mm) pitch, designed for surface mount board-to-board applications. This connector features gold-plated mating contacts, push-pull fastening, and operates across -40°C to 105°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs or production continuity.

Key Parameters

Parameter	953224-2000-AR-TP
Manufacturer	3M
Connector Type	Receptacle, Bottom or Top Entry
Number of Positions	24
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Current Rating	1A
Voltage Rating	1000VDC
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

Connector Type & Style: Receptacle, board-to-board configuration
Position Count & Pitch: 24 positions at 0.079" (2.00mm) mating pitch
Row Configuration: 2 rows with 0.079" (2.00mm) row spacing
Mounting Technology: Surface mount with solder termination
Fastening Mechanism: Push-pull engagement
Contact Material & Finish: Gold-plated mating surface
Electrical Performance: Current and voltage ratings must meet or exceed original specifications
Environmental Compliance: UL94 V-0 flammability rating and MSL 1 classification

Substitute parts are grouped into two categories:

Category A - Molex Milli-Grid 87381 Series (0873812415, 0873812418, 0873812474): Active production alternatives with enhanced current ratings (1.9A) and lower voltage ratings (125V). These parts maintain 24-position, 2-row configuration with 0.079" pitch and surface mount solder termination. Variations exist in contact finish thickness, insulation height, and feature sets (board guide, pick-and-place capability).

Category B - Hirose A3 Series (A3-24DA-2SV(71), A3A-24DA-2SV(71)): Active production alternatives with 1A current rating and 200VAC voltage rating. These parts maintain core mechanical and electrical compatibility with polyphenylene sulfide (PPS) insulation and phosphor bronze contacts. The A3A variant includes board guide features.

Category C - Samtec Tiger Eye™ SMM Series (SMM-112-02-F-D, SMM-112-02-F-D-01-P-TR, SMM-112-02-F-D-19, SMM-112-02-F-D-K-TR, SMM-112-02-F-D-LC): Active production alternatives with superior current ratings (3.2A per contact) and voltage ratings (350VAC). These parts feature liquid crystal polymer (LCP) insulation and beryllium copper contacts. Variations include position loading (23 or 24 positions), packaging formats (tube or tape & reel), and feature options (pick-and-place, board lock).

Parameter Comparison

Part Number	Manufacturer	Series	Positions	Pitch (mm)	Rows	Mount Type	Fastening	Current (A)	Voltage	Temp Range (°C)	Status
953224-2000-AR-TP	3M	953	24	2.00	2	SMD	Push-Pull	1.0	1000VDC	-40 ~ 105	Obsolete
0873812415	Molex	Milli-Grid 87381	24	2.00	2	SMD	Push-Pull	1.9	125V	-55 ~ 105	Active
0873812418	Molex	Milli-Grid 87381	24	2.00	2	SMD	Push-Pull	1.9	125V	-55 ~ 105	Active
0873812474	Molex	Milli-Grid 87381	24	2.00	2	SMD	Push-Pull	1.9	125V	-55 ~ 105	Active
A3-24DA-2SV(71)	Hirose Electric Co Ltd	A3	24	2.00	2	SMD	Push-Pull	1.0	200VAC	-55 ~ 85	Active
A3A-24DA-2SV(71)	Hirose Electric Co Ltd	A3	24	2.00	2	SMD	Push-Pull	1.0	200VAC	-55 ~ 85	Active
SMM-112-02-F-D	Samtec Inc.	Tiger Eye™ SMM	24	2.00	2	SMD	Push-Pull	3.2	350VAC	-55 ~ 125	Active
SMM-112-02-F-D-01-P-TR	Samtec Inc.	Tiger Eye™ SMM	23	2.00	2	SMD	Push-Pull	3.2	350VAC	-55 ~ 125	Active
SMM-112-02-F-D-19	Samtec Inc.	Tiger Eye™ SMM	23	2.00	2	SMD	Push-Pull	3.2	350VAC	-55 ~ 125	Active
SMM-112-02-F-D-K-TR	Samtec Inc.	Tiger Eye™ SMM	24	2.00	2	SMD	Push-Pull	3.2	350VAC	-55 ~ 125	Active
SMM-112-02-F-D-LC	Samtec Inc.	Tiger Eye™ SMM	24	2.00	2	SMD	Push-Pull	3.2	350VAC	-55 ~ 125	Active

Engineering Selection Recommendations

For Direct Electrical Compatibility (1A Current Requirement)

Hirose A3 series connectors (A3-24DA-2SV(71) and A3A-24DA-2SV(71)) provide the closest electrical match to the original 953224-2000-AR-TP, maintaining 1A current rating. Both parts are ROHS3 compliant and carry UL94 V-0 flammability certification. The A3A-24DA-2SV(71) variant includes board guide features for enhanced mechanical stability. Operating temperature range is -55°C to 85°C, which covers the original -40°C to 105°C specification at the lower end but does not extend to 105°C.

For Enhanced Performance with Higher Current Capacity

Samtec Tiger Eye™ SMM series (SMM-112-02-F-D, SMM-112-02-F-D-K-TR, SMM-112-02-F-D-LC) offers 3.2A per contact and 350VAC rating, providing significant performance margin above the original 1A specification. All variants are ROHS3 compliant with UL94 V-0 certification. Operating temperature extends to 125°C, exceeding the original upper limit. SMM-112-02-F-D-K-TR is packaged in tape & reel format suitable for automated assembly. SMM-112-02-F-D-LC includes board lock features. Variants SMM-112-02-F-D-01-P-TR and SMM-112-02-F-D-19 are loaded with 23 positions instead of 24.

For Cost-Optimized Substitution

Molex Milli-Grid 87381 series (0873812415, 0873812418, 0873812474) provides active production status with 1.9A current rating and ROHS3 compliance. All three variants maintain 24-position, 2-row configuration with 0.079" pitch. Differences include contact finish thickness (30.0µin, 15.0µin variants), insulation height (4.00mm, 4.50mm), and feature sets. Operating temperature range is -55°C to 105°C, matching the original upper limit.

Frequently Asked Questions (FAQ)

Q: Can SMM-112-02-F-D-01-P-TR and SMM-112-02-F-D-19 be used as direct replacements if only 23 positions are needed?

A: Yes, if your application requires only 23 loaded positions. These Samtec variants maintain the same 24-position connector body with one position unloaded. Mechanical and electrical compatibility is preserved for the 23 active positions. Verify that your mating connector and PCB layout accommodate this configuration.

Q: What is the difference between Molex 0873812415, 0873812418, and 0873812474?

A: All three are Molex Milli-Grid 87381 series with identical electrical ratings (1.9A, 125V) and core mechanical specifications. Differences are: 0873812415 has 30.0µin contact finish thickness and 4.00mm insulation height with board guide and pick-and-place features; 0873812418 has 15.0µin contact finish thickness and 4.00mm insulation height with board guide only; 0873812474 has 15.0µin contact finish thickness and 4.50mm insulation height with pick-and-place features only.

Q: Does the Hirose A3 series operate at the same temperature as the original 3M connector?

A: The Hirose A3 series operates from -55°C to 85°C, which does not reach the original 105°C upper limit. If your application requires operation above 85°C, the Samtec Tiger Eye™ SMM series (-55°C to 125°C) is required.

Q: Are all substitute parts RoHS compliant?

A: Yes. Molex 0873812415, 0873812418, 0873812474; Hirose A3-24DA-2SV(71), A3A-24DA-2SV(71); and all Samtec SMM-112 variants are ROHS3 compliant. All carry UL94 V-0 flammability certification and MSL 1 moisture sensitivity classification.

Q: What packaging options are available for high-volume production?

A: Samtec SMM-112-02-F-D-K-TR is supplied in tape & reel (TR) format for automated pick-and-place assembly. Molex 0873812415, 0873812418, 0873812474 are supplied in tube packaging. Hirose A3 series and other Samtec variants are supplied in tube format. Verify packaging requirements with your assembly process.

Q: Can I use SMM-112-02-F-D-LC with SMM-112-02-F-D-K-TR interchangeably?

A: Both are 24-position Samtec Tiger Eye™ SMM connectors with identical electrical and mechanical specifications. The primary difference is packaging: SMM-112-02-F-D-LC is tube-packaged with board lock features, while SMM-112-02-F-D-K-TR is tape & reel packaged with pick-and-place features. Mechanical compatibility is maintained; select based on your assembly and application requirements.

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