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Equivalent & Substitute Parts for M20-9770942
Part Overview
The Harwin M20-9770942 is a rectangular connector header designed for through-hole mounting with 9 positions at 0.100" (2.54mm) pitch. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The M20-9770942 features a cuttable header design with unshrouded configuration, suitable for board-to-board or cable applications. Substitute parts maintain core electrical and mechanical compatibility while offering active product status and improved availability.
Substiute Parts
Key Parameters
| Parameter | M20-9770942 Value |
|---|---|
| Connector Type | Header, Cuttable |
| Contact Type | Male Pin |
| Pitch - Mating | 0.100" (2.54mm) |
| Number of Positions | 9 |
| Number of Rows | 1 |
| Mounting Type | Through Hole |
| Termination | Solder |
| Fastening Type | Push-Pull |
| Contact Shape | Square |
| Contact Finish - Mating | Gold |
| Contact Finish - Post | Tin |
| Contact Material | Brass |
| Insulation Material | Polyamide (PA6T), Nylon 6T |
| Operating Temperature | -40°C ~ 105°C |
| Material Flammability Rating | UL94 V-0 |
| Insulation Color | Black |
| Current Rating | 3A per Contact |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the M20-9770942 are grouped based on strict electrical and mechanical parameter compatibility. The primary substitution criteria are:
Core Compatibility Parameters:
- Pitch - Mating: 0.100" (2.54mm)
- Number of Positions: 9
- Number of Rows: 1
- Contact Type: Male Pin
- Mounting Type: Through Hole
- Fastening Type: Push-Pull
- Material Flammability Rating: UL94 V-0
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
Acceptable Variations:
- Connector Type: Header variants (Cuttable, Breakaway) are functionally equivalent for board-to-board applications
- Contact Shape: Square or Circular contacts are interchangeable within the 2.54mm pitch standard
- Contact Finish - Mating: Gold or Tin finishes both meet electrical requirements
- Insulation Material: Polyamide (PA6T) or Polyamide (PA) with glass fill both meet UL94 V-0 requirements
- Operating Temperature: Ranges from -40°C ~ 105°C to -55°C ~ 125°C are acceptable
- Termination: Solder or Press-Fit/Solder combinations are compatible
All substitute parts listed maintain the same pitch, position count, row configuration, and compliance certifications as the original part.
Parameter Comparison
| Parameter | M20-9770942 | M20-9770946 | 0022284096 | 0022285090 | 0022285093 | 350-10-109-00-001101 | 350-10-109-00-013101 | 350-10-109-01-666101 | 350-80-109-00-001101 | 350-80-109-00-006101 | 350-80-109-00-013101 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Harwin Inc. | Harwin Inc. | Molex | Molex | Molex | Preci-Dip | Preci-Dip | Preci-Dip | Preci-Dip | Preci-Dip | Preci-Dip |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| 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) | 0.100" (2.54mm) |
| Number of Positions | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Number of Rows | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Contact Type | Male Pin | 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 | Through Hole |
| Termination | Solder | Solder | Solder | Kinked Pin, Solder | Kinked Pin, Solder | Solder | Solder | Press-Fit, 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 | Push-Pull |
| Contact Shape | Square | Square | Square | Square | Square | Circular | Circular | Circular | Circular | Circular | Circular |
| Contact Finish - Mating | Gold | Tin | Gold | Tin | Gold | Gold | Gold | Gold | Tin | Tin | Tin |
| Contact Finish - Post | Tin | Tin | Tin | Tin | Tin | Gold | Gold | Gold | Tin | Tin | Tin |
| Contact Material | Brass | Brass | Not Specified | Not Specified | Not Specified | Brass | Brass | Brass | Brass | Brass | Brass |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C | Not Specified | Not Specified | Not Specified | -55°C ~ 125°C | -55°C ~ 125°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 | UL94 V-0 |
| Current Rating | 3A per Contact | 3A per Contact | Not Specified | Not Specified | Not Specified | 3A | 3A | 3A | 3A | 3A | 3A |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Primary Recommendation: M20-9770946
The M20-9770946 is the direct Harwin equivalent to the obsolete M20-9770942. Both parts share identical electrical and mechanical specifications within the M20 series. The M20-9770946 is active in production with 5404 units in stock, providing immediate availability and design continuity. This part is preferred for applications requiring minimal design changes.
Secondary Recommendations: Molex KK254 Series (0022284096, 0022285090, 0022285093)
Molex KK254 series headers provide active product status with breakaway connector type variants. These parts maintain the 0.100" (2.54mm) pitch, 9-position, single-row configuration and UL94 V-0 compliance. The KK254 series offers multiple contact finish options (Gold or Tin mating surfaces) and termination styles (standard solder or kinked pin solder). Inventory availability ranges from 795 to 1067 units. These parts are suitable for applications where connector type flexibility is acceptable.
Tertiary Recommendations: Preci-Dip 350 Series (350-10-109-00-001101, 350-10-109-00-013101, 350-10-109-01-666101, 350-80-109-00-001101, 350-80-109-00-006101, 350-80-109-00-013101)
Preci-Dip 350 series headers provide extended operating temperature range (-55°C ~ 125°C) compared to the original part (-40°C ~ 105°C). These parts feature circular contact geometry instead of square, with gold or tin finish options. The 350 series includes both standard solder and press-fit/solder termination variants. Inventory availability ranges from 627 to 1177 units. These parts are recommended for applications requiring enhanced temperature performance or press-fit assembly capability.
All substitute parts maintain ROHS3 compliance, MSL 1 rating, and 3A current capacity, ensuring regulatory and environmental compatibility with the original design.
Frequently Asked Questions (FAQ)
Q: Can I use M20-9770946 as a direct replacement for M20-9770942?
A: Yes. The M20-9770946 is the active equivalent within the Harwin M20 series. Both parts share identical pitch (0.100"), position count (9), row configuration (1), mounting type (through hole), and compliance ratings. The primary difference is product status: M20-9770942 is obsolete while M20-9770946 is active production.
Q: What is the difference between square and circular contact shapes in the 2.54mm pitch standard?
A: Both square and circular contact geometries are mechanically and electrically compatible within the 0.100" (2.54mm) pitch standard. Contact shape does not affect mating compatibility or electrical performance. Selection depends on manufacturing process preference and connector design. Preci-Dip 350 series uses circular contacts while Harwin M20 and Molex KK254 use square contacts.
Q: Are Molex KK254 headers compatible with Harwin M20 receptacles?
A: Yes. Both Molex KK254 and Harwin M20 headers conform to the 0.100" (2.54mm) pitch standard and are mechanically compatible with standard 2.54mm pitch receptacles. Connector type designation (Header, Cuttable vs. Header, Breakaway) refers to the header design, not mating compatibility.
Q: What is the difference between Tin and Gold contact finishes?
A: Both Tin and Gold finishes provide electrical conductivity and corrosion resistance. Gold finishes offer superior corrosion resistance and lower contact resistance, making them preferred for low-signal applications. Tin finishes are cost-effective and suitable for general-purpose applications. Both finishes are acceptable for the 3A current rating of this connector family.
Q: Can I use Preci-Dip 350 series headers with extended temperature range (-55°C ~ 125°C) in place of the original M20-9770942 (-40°C ~ 105°C)?
A: Yes. The Preci-Dip 350 series extended temperature range is a superset of the original specification. Parts rated for -55°C ~ 125°C are fully compatible with applications designed for -40°C ~ 105°C operation. This substitution is appropriate for applications requiring enhanced thermal performance.
Q: What is the difference between Solder and Press-Fit/Solder termination?
A: Solder termination requires manual soldering to the PCB. Press-Fit/Solder termination (350-10-109-01-666101) allows press-fit insertion into plated through holes followed by solder reflow, enabling automated assembly. Both termination methods provide equivalent electrical and mechanical performance.
Q: Are all listed substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory compliance of the original M20-9770942.
Q: Which substitute part offers the best inventory availability?
A: M20-9770946 offers the highest inventory with 5404 units in stock. Preci-Dip 350-10-109-00-001101 provides 1177 units. Molex KK254 variants range from 795 to 1067 units. Inventory levels support immediate procurement for all listed substitutes.
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