3M 953224-2000-AR-PR Equivalent & Substitute Parts

Part Overview

The 3M 953224-2000-AR-PR 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 ongoing production and field replacement requirements.

Key Parameters

Parameter	Value
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
Contact Type	Female Socket
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Termination	Solder
Current Rating	1A
Voltage Rating	1000VDC
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

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

Critical Matching Parameters:

Number of positions: 24
Pitch - mating: 0.079" (2.00mm)
Number of rows: 2
Row spacing - mating: 0.079" (2.00mm)
Connector type: Receptacle
Contact type: Female Socket
Mounting type: Surface Mount
Fastening type: Push-Pull
Termination: Solder
Contact finish - mating: Gold

Allowable Variations:

Operating temperature range may exceed the original specification
Current rating may exceed 1A
Voltage rating may exceed 1000VDC
Contact finish thickness may vary
Insulation height may vary within mechanical compatibility limits
Insulation material composition may differ
Features (Board Guide, Pick and Place, Board Lock) may be added

All identified substitute parts meet or exceed the critical matching parameters. Molex Milli-Grid 87381 series parts (0873812415, 0873812418, 0873812474) are manufacturer-recommended alternatives. Hirose A3 series parts (A3-24DA-2SV(71), A3A-24DA-2SV(71)) and Samtec Tiger Eye SMM series parts (SMM-112-02-F-D variants) provide functionally equivalent solutions with enhanced electrical performance characteristics.

Parameter Comparison

Parameter	3M 953224-2000-AR-PR	Molex 0873812415	Molex 0873812418	Molex 0873812474	Hirose A3-24DA-2SV(71)	Hirose A3A-24DA-2SV(71)	Samtec SMM-112-02-F-D	Samtec SMM-112-02-F-D-K-TR	Samtec SMM-112-02-F-D-LC
Number of Positions	24	24	24	24	24	24	24	24	24
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	2	2	2	2	2	2	2	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Operating Temperature	-40°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 85°C	-55°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	1A	1.9A	1.9A	1.9A	1A	1A	3.2A per Contact	3.2A per Contact	3.2A per Contact
Voltage Rating	1000VDC	125V	125V	125V	200VAC	200VAC	350VAC	350VAC	350VAC
Material Flammability Rating	UL94 V-0	UL94 V-0	—	—	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Molex Milli-Grid 87381 Series (0873812415, 0873812418, 0873812474)

These connectors are manufacturer-recommended substitutes with active product status. All three variants maintain identical pitch, position count, and row configuration. Molex 0873812415 and 0873812474 carry UL94 V-0 flammability certification. All variants are ROHS3 compliant and REACH unaffected. The 0873812415 variant offers the highest current rating (1.9A) and extended operating temperature range (-55°C to 105°C). Selection between these three should be based on specific packaging requirements (Tube format) and feature requirements (Board Guide vs. Pick and Place capability).

Hirose A3 Series (A3-24DA-2SV(71), A3A-24DA-2SV(71))

Both Hirose variants maintain full electrical and mechanical compatibility with identical pitch, position count, and row spacing. Both carry UL94 V-0 flammability certification and are ROHS3 compliant. The A3A-24DA-2SV(71) includes Board Guide feature. Operating temperature range is -55°C to 85°C, which is lower than the original specification but suitable for most applications. Current rating matches the original at 1A. Voltage rating is 200VAC. Both variants are REACH unaffected.

Samtec Tiger Eye SMM Series (SMM-112-02-F-D variants)

Samtec connectors provide the highest electrical performance with 3.2A per contact current rating and 350VAC voltage rating. All variants maintain identical pitch, position count, and row configuration. All carry UL94 V-0 flammability certification and ROHS3 compliance. Operating temperature range extends to 125°C, exceeding the original specification. Variants differ in packaging (Tube vs. Tape & Reel), position loading (All vs. 23 positions), and features (Board Lock, Pick and Place). SMM-112-02-F-D-K-TR in Tape & Reel format is optimized for automated assembly.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower operating temperature maximum than the original?

A: Hirose A3 series parts operate to 85°C maximum, compared to the original 105°C specification. Substitution is permissible only if your application does not require operation above 85°C. Molex and Samtec alternatives extend to 105°C or higher, providing full temperature range compatibility.

Q: What is the difference between the three Molex 0873812 variants?

A: All three (0873812415, 0873812418, 0873812474) share identical electrical specifications and pitch configuration. Differences are: 0873812415 includes Board Guide feature and carries UL94 V-0 certification; 0873812418 omits flammability rating documentation; 0873812474 has increased insulation height (0.177" vs. 0.157") and omits flammability rating. Selection depends on mechanical clearance requirements and certification documentation needs.

Q: Are Samtec SMM-112 variants with 23 positions loaded compatible?

A: SMM-112-02-F-D-01-P-TR and SMM-112-02-F-D-19 are loaded with 23 positions instead of 24. These are not direct substitutes for applications requiring all 24 positions. Use only if your circuit design accommodates the missing position.

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

A: Samtec SMM-112-02-F-D-K-TR is supplied in Tape & Reel format, optimized for automated pick-and-place assembly. Molex variants and Hirose parts are supplied in Tube format. Tape & Reel packaging is recommended for surface mount production volumes exceeding standard tube quantities.

Q: Do all substitute parts meet RoHS compliance?

A: Molex 0873812415 and 0873812474, all Hirose variants, and all Samtec variants are ROHS3 compliant. Molex 0873812418 does not document RoHS status in provided specifications. For RoHS-mandated applications, confirm compliance documentation with the supplier.

Q: What is the voltage rating difference between the original and substitutes?

A: The original 953224-2000-AR-PR is rated 1000VDC. Molex variants are rated 125V, Hirose variants 200VAC, and Samtec variants 350VAC. If your application requires 1000VDC operation, none of these substitutes are electrically compatible. Consult with manufacturers for higher-voltage alternatives.

Q: Can I mix substitute parts from different manufacturers in the same assembly?

A: All substitute parts maintain identical mating pitch (0.079") and row spacing (0.079"), enabling mechanical interchangeability. However, mixing manufacturers in the same assembly introduces supply chain complexity and potential performance inconsistencies. Standardize on a single manufacturer for production consistency.

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