M20-9970745 Equivalent & Substitute Parts

Part Overview

The M20-9970745 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole mounting applications. This vertical 14-position connector operates at 0.100" (2.54mm) pitch with a 2-row configuration and supports 3A per contact current rating. The part is Active status and RoHS3 compliant, suitable for board-to-board or cable interconnection in industrial and commercial applications. Substitute parts are identified to address inventory availability, extended temperature ranges, or specific mechanical requirements while maintaining core electrical compatibility.

Key Parameters

Parameter	M20-9970745 Specification
Pitch - Mating	0.100" (2.54mm)
Number of Positions	14
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Connector Type	Header, Cuttable
Contact Type	Male Pin
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Current Rating	3A per Contact
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the M20-9970745 is determined by the following mandatory parameters:

Pitch - Mating: 0.100" (2.54mm) — all substitutes must match exactly
Number of Positions: 14 — all substitutes must maintain 14-position configuration
Number of Rows: 2 — all substitutes must maintain 2-row layout
Row Spacing - Mating: 0.100" (2.54mm) — all substitutes must match exactly
Contact Type: Male Pin — all substitutes must be male pin headers
Mounting Type: Through Hole — all substitutes must support through-hole mounting
Termination: Solder — all substitutes must use solder termination
Fastening Type: Push-Pull — all substitutes must support push-pull mating
Style: Board to Board or Cable — all substitutes must support this application style

Variations permitted in substitute parts include contact material, insulation material, contact finish composition, operating temperature range, and overall contact length, provided the core mechanical and electrical interface remains compatible.

Parameter Comparison

Parameter	M20-9970745	HMTSW-107-09-G-D-475	HTSW-107-14-G-D-006	MTLW-107-22-G-D-450	MTSW-107-08-G-D-320	PREC007DFAN-RC	TSW-107-14-F-D	TSW-107-14-G-D-006	TSW-107-14-S-D-006	TSW-107-29-G-D
Manufacturer	Harwin Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Sullins Connector Solutions	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	14	14	14	14	14	14	14	14	14	14
Number of Rows	2	2	2	2	2	2	2	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
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
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.335" (8.51mm)	0.475" (12.07mm)	0.320" (8.13mm)	0.450" (11.43mm)	0.320" (8.13mm)	0.318" (8.08mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)
Contact Length - Post	0.116" (2.95mm)	0.155" (3.94mm)	0.110" (2.79mm)	0.120" (3.05mm)	0.110" (2.79mm)	0.120" (3.05mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.910" (23.11mm)
Overall Contact Length	0.551" (14.00mm)	0.730" (18.54mm)	0.530" (13.46mm)	0.630" (16.00mm)	0.530" (13.46mm)	0.537" (13.63mm)	0.530" (13.46mm)	0.530" (13.46mm)	0.530" (13.46mm)	1.330" (33.78mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.060" (1.52mm)	0.100" (2.54mm)	0.098" (2.50mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Tin	Gold	Gold	Gold	Gold
Contact Material	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Polyamide (PA6T), Nylon 6T	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Polyester, Glass Filled	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Operating Temperature	-40°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating	3A per Contact	3A	Varies by Wire Gauge	5.2A per Contact	3A	3A per Contact	Not Specified	Not Specified	Not Specified	Not Specified
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and RoHS3 compliance, ensuring long-term availability and regulatory alignment with the M20-9970745. Selection among substitutes depends on specific application requirements:

For standard applications matching original specifications: PREC007DFAN-RC (Sullins) provides direct compatibility with identical operating temperature range (-40°C ~ 105°C) and brass contact material. MTSW-107-08-G-D-320 (Samtec) offers cuttable header functionality matching the original part's design feature.

For extended temperature applications: HMTSW-107-09-G-D-475, HTSW-107-14-G-D-006, MTLW-107-22-G-D-450, TSW-107-14-F-D, TSW-107-14-G-D-006, TSW-107-14-S-D-006, and TSW-107-29-G-D all support -55°C ~ 125°C operating range, suitable for industrial environments requiring broader thermal performance.

For higher current applications: MTLW-107-22-G-D-450 supports 5.2A per contact, exceeding the original 3A rating.

For extended post length applications: TSW-107-29-G-D provides 0.910" (23.11mm) post length for applications requiring deeper PCB penetration or extended wire connection capability.

All substitutes maintain identical pitch (0.100"), position count (14), row configuration (2), and push-pull fastening, ensuring mechanical and electrical interface compatibility.

Frequently Asked Questions (FAQ)

Q: Can I substitute M20-9970745 with any of the listed parts without PCB redesign?

A: Yes, all listed substitutes maintain identical mating pitch (0.100"), position count (14), row spacing (0.100"), and through-hole mounting footprint. PCB layout compatibility is preserved. However, verify contact length and post length specifications if your application has specific depth or wire gauge requirements.

Q: What is the difference between the Samtec TSW series variants (TSW-107-14-F-D, TSW-107-14-G-D-006, TSW-107-14-S-D-006, TSW-107-29-G-D)?

A: These variants differ in contact finish composition and post length. TSW-107-14-F-D uses gold mating finish with tin post finish. TSW-107-14-G-D-006 and TSW-107-14-S-D-006 use gold on both mating and post surfaces with different finish thicknesses. TSW-107-29-G-D provides significantly extended post length (0.910" vs. 0.110") for applications requiring deeper PCB mounting or extended wire connections.

Q: Is PREC007DFAN-RC a direct replacement for M20-9970745?

A: PREC007DFAN-RC (Sullins) is mechanically and electrically compatible with identical operating temperature range (-40°C ~ 105°C), current rating (3A per contact), and core connector specifications. The primary difference is contact finish (tin vs. gold) and insulation material (PBT vs. Nylon 6T). Both are UL94 V-0 rated and RoHS3 compliant.

Q: Why do some substitutes show "Varies by Wire Gauge" for current rating?

A: HTSW-107-14-G-D-006 current rating depends on the wire gauge used in the application. Consult the manufacturer's datasheet for specific wire gauge current ratings. The M20-9970745 specifies a fixed 3A per contact rating independent of wire gauge.

Q: Can I use MTLW-107-22-G-D-450 if my application requires higher current capacity?

A: Yes, MTLW-107-22-G-D-450 supports 5.2A per contact, providing increased current capacity. However, verify that your PCB traces and mating connector are also rated for this higher current to avoid thermal or reliability issues.

Q: What is the significance of "Cuttable" and "Breakaway" connector types?

A: M20-9970745 and MTSW-107-08-G-D-320 are cuttable headers, allowing individual pins to be separated if needed. PREC007DFAN-RC is a breakaway header with similar functionality. Standard headers (HMTSW, HTSW, MTLW, TSW series without these designations) are not designed for post-manufacturing separation.

Q: Are all substitutes available in the same packaging as M20-9970745?

A: M20-9970745 is supplied in Bulk packaging. Most substitutes are also Bulk packaged (HMTSW-107-09-G-D-475, HTSW-107-14-G-D-006, MTLW-107-22-G-D-450, MTSW-107-08-G-D-320, PREC007DFAN-RC, TSW-107-14-G-D-006, TSW-107-14-S-D-006, TSW-107-29-G-D). TSW-107-14-F-D is supplied in Bag packaging. Confirm packaging requirements with your procurement process.

Q: Which substitute offers the best thermal performance?

A: All Samtec substitutes (HMTSW, HTSW, MTLW, MTSW, TSW series) support -55°C ~ 125°C operating range, exceeding the M20-9970745 specification of -40°C ~ 105°C. PREC007DFAN-RC matches the original temperature range. Select based on your application's minimum and maximum operating temperatures.

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