The 0901210800: 40 positions, single row, all loaded — the full circuit count is populated, so the BOM line matches the mating half exactly. No need to snap off unused sections unless you choose the breakaway option.
Molex 0901210800 C-Grid III 90121 Header, 40 Pos
MPN0901210800
Active
Molex C-Grid III 90121 series, 0901210800, unshrouded breakaway header, 40 circuits, single row, 0.100" (2.54mm) pitch, through-hole right-angle, gold mating finish, tin post, UL94 V-0.
$6.3300Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
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Independent China distributor & sourcing agent· Listing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | C-Grid III 90121 |
| Type | Male Pin |
| Mounting | Through Hole, Right Angle |
| Connector type | Header, Breakaway |
| Fastening type | Push-Pull |
| Contact material | Brass |
| Insulation color | Black |
| Insulation height | 0.142\" (3.60mm) |
| Insulation material | Polyester, Glass Filled |
| Material flammability rating | UL94 V-0 |
| Style | Board to Board or Cable |
| Package | Bulk |
All specifications
| Parameter | Value |
|---|---|
| Shrouding | Unshrouded |
| Termination | Solder |
| Applications | Automotive, General Purpose |
| Contact shape | Square |
| Rows | 1 |
| Pitch | 0.100\" (2.54mm) |
| Positions | 40 |
| Contact finish - post | Tin |
| Contact length - post | 0.114\" (2.90mm) |
| Contact finish - mating | Gold |
| Contact length - mating | 0.266\" (6.75mm) |
| Contact finish thickness - post | 118.1µin (3.00µm) |
| Contact finish thickness - mating | 15.0µin (0.38µm) |
Product details
Frequently asked questions
What is the pitch and position count of 0901210800?
0.100" (2.54mm) pitch, 40 positions, single row, all positions loaded.
Is 0901210800 RoHS compliant?
Yes, RoHS compliant per the manufacturer declaration.
What is the closest pin-compatible alternative to 0901210800?
The C-Grid III 90121 series includes other position counts and plating options; verify the mating half and board footprint before substituting.