Molex 0877580008 Equivalent & Substitute Parts

Part Overview

The Molex 0877580008 is an 8-position rectangular connector header with 2.00mm pitch, designed for through-hole board-to-board or cable applications. This unshrouded header features male pins with gold-plated mating contacts and tin-plated posts, suitable for automotive, general purpose, and telecommunications applications. The part is active in production status and ROHS3 compliant with MSL 1 rating.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part's core specifications: 8 positions, 2-row configuration, 2.00mm pitch, through-hole mounting, solder termination, and gold contact finish on mating surfaces.

Key Parameters

Parameter	Value
Manufacturer Part Number	0877580008
Manufacturer	Molex
Category	Rectangular Connectors
Number of Positions	8
Number of Rows	2
Pitch - Mating	0.079" (2.00mm)
Row Spacing - Mating	0.079" (2.00mm)
Connector Type	Header, Breakaway
Contact Type	Male Pin
Mounting Type	Through Hole
Termination	Solder
Contact Finish - Mating	Gold
Shrouding	Unshrouded
Product Status	Active
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the Molex 0877580008 are qualified based on the following core electrical and mechanical compatibility criteria:

Fixed Parameters (Must Match):

8 positions
2-row configuration
0.079" (2.00mm) pitch
0.079" (2.00mm) row spacing
Through-hole mounting
Solder termination
Gold contact finish on mating surface
Active product status
ROHS3 compliance

Variable Parameters (Allowed to Differ):

Overall pin length
Post (mating) length
Stack height
Tail length
Contact finish thickness
Packaging format

All substitute parts listed are Samtec Inc. TW series connectors that maintain electrical and mechanical compatibility through identical position count, pitch, row spacing, mounting method, and contact finish specifications. Variations in dimensional parameters (stack height, post length, tail length) allow for different application-specific stacking and board clearance requirements while preserving core connector functionality.

Parameter Comparison

Parameter	Molex 0877580008	TW-04-03-S-D-120-050	TW-04-04-G-D-200-070	TW-04-05-L-D-300-130	TW-04-05-L-D-325-090	TW-04-05-L-D-390-100	TW-04-05-LM-D-295-100	TW-04-05-LM-D-300-090	TW-04-05-SM-D-280-110	TW-04-10-L-D-355-110
Manufacturer	Molex	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Number of Positions	8	8	8	8	8	8	8	8	8	8
Number of Rows	2	2	2	2	2	2	2	2	2	2
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)	0.079" (2.00mm)
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)	0.079" (2.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Length - Overall Pin	0.555" (14.10mm)	0.535" (14.689mm)	0.555" (14.097mm)	0.594" (15.088mm)	0.594" (15.088mm)	0.594" (15.088mm)	0.594" (15.088mm)	0.594" (15.088mm)	0.594" (15.088mm)	0.614" (15.596mm)
Length - Post (Mating)	0.394" (10.00mm)	0.365" (9.271mm)	0.285" (7.239mm)	0.164" (4.166mm)	0.179" (4.547mm)	0.104" (2.642mm)	0.199" (5.055mm)	0.204" (5.182mm)	0.204" (5.182mm)	0.149" (3.785mm)
Length - Stack Height	N/A	0.120" (3.048mm)	0.200" (5.080mm)	0.300" (7.620mm)	0.325" (8.255mm)	0.390" (9.900mm)	0.295" (7.493mm)	0.300" (7.620mm)	0.280" (7.112mm)	0.355" (9.017mm)
Length - Tail	0.102" (2.60mm)	0.050" (1.270mm)	0.070" (1.778mm)	0.130" (3.302mm)	0.090" (2.286mm)	0.100" (2.540mm)	0.100" (2.540mm)	0.090" (2.286mm)	0.110" (2.794mm)	0.110" (2.794mm)
Contact Finish Thickness - Mating	15.0µin (0.38µm)	30.0µin (0.76µm)	20.0µin (0.51µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	30.0µin (0.76µm)	10.0µin (0.25µm)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	857 Pcs New Original In Stock	752 Pcs New Original In Stock	1021 Pcs New Original In Stock	945 Pcs New Original In Stock	656 Pcs New Original In Stock	1050 Pcs New Original In Stock	661 Pcs New Original In Stock	739 Pcs New Original In Stock	1126 Pcs New Original In Stock	908 Pcs New Original In Stock

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the Molex 0877580008 through identical core specifications: 8-position, 2-row configuration with 2.00mm pitch, through-hole solder termination, and gold-plated mating contacts. All substitute parts are active production items with ROHS3 compliance and MSL 1 rating, matching the regulatory and environmental requirements of the original part.

Selection among substitute parts is determined by application-specific dimensional requirements:

TW-04-03-S-D-120-050 provides the minimum stack height (0.120") for space-constrained applications with reduced post length (0.365").

TW-04-04-G-D-200-070 offers moderate stack height (0.200") with mid-range post length (0.285").

TW-04-05-L-D-300-130, TW-04-05-L-D-325-090, TW-04-05-L-D-390-100 provide progressive stack height options (0.300" to 0.390") with varying post lengths and tail configurations for different board clearance and interconnect depth requirements.

TW-04-05-LM-D-295-100 and TW-04-05-LM-D-300-090 offer stack heights near 0.300" with extended post lengths (0.199" to 0.204") for applications requiring deeper mating engagement.

TW-04-05-SM-D-280-110 combines moderate stack height (0.280") with extended post length (0.204") and increased contact finish thickness (30.0µin), suitable for applications requiring enhanced contact durability.

TW-04-10-L-D-355-110 provides the maximum stack height (0.355") with moderate post length (0.149") for applications requiring maximum vertical spacing.

Frequently Asked Questions (FAQ)

Q: Can Samtec TW series connectors directly replace the Molex 0877580008?

A: Yes. All listed Samtec TW series parts maintain identical electrical and mechanical core specifications: 8 positions, 2-row configuration, 2.00mm pitch, through-hole solder termination, and gold mating contacts. Dimensional variations in stack height, post length, and tail length do not affect electrical compatibility but must be evaluated for specific board layout and clearance requirements.

Q: What determines which substitute part to select?

A: Selection is based on application-specific dimensional requirements. The primary differentiator is stack height, which ranges from 0.120" (TW-04-03-S-D-120-050) to 0.355" (TW-04-10-L-D-355-110). Post length (mating contact length) and tail length (solder post length) must also be evaluated against board thickness, component spacing, and PCB clearance constraints.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the regulatory and environmental specifications of the Molex 0877580008.

Q: Do contact finish thickness variations affect compatibility?

A: Contact finish thickness variations (10.0µin to 30.0µin) do not affect electrical compatibility. These variations reflect different manufacturing specifications and do not impact connector performance in standard applications. Parts with 30.0µin finish (TW-04-03-S-D-120-050 and TW-04-05-SM-D-280-110) provide enhanced contact durability for high-cycle mating applications.

Q: What is the difference between TW-04-05 variants?

A: TW-04-05 variants differ in stack height, post length, and tail length configurations. The designation suffix indicates these dimensional parameters: L (long), LM (long mating), SM (short mating), followed by stack height and tail length specifications. All maintain identical pitch, position count, and contact finish specifications.

Q: Can these parts be used interchangeably in existing designs?

A: Electrical interchangeability is confirmed. Mechanical interchangeability depends on PCB layout, component clearance, and board thickness. Stack height and post length must be evaluated against specific application requirements before substitution.

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