776230-1 Datasheet and Pinout: Specs for Design and Sourcing

Why 776230-1 Lead Times Demand a Sourcing Strategy Reboot

Electronic component lead times are no longer stable facts—they are moving targets, as the 2026 shortage forecast confirms. For sealed connectors like the TE 776230-1, used in safety‑critical systems, reliable delivery is paramount. A delayed batch can halt an engine control unit (ECU) production line overnight. Failures in the field can trigger FDA market withdrawals or NHTSA defect investigations, making authentic, traceable stock a design constraint, not just a purchasing checkbox. When a connector carries the sealing and vibration performance of the Ampseal family, the cost of a counterfeit or a substituted batch is measured in warranty claims and safety campaigns—not just rework hours.

Procurement teams are therefore no longer asking “what’s the lead time?” as a single number; they are asking “what allocation-backed schedule can the distributor guarantee for 776230-1 this quarter?” The right sourcing strategy blends distributor diversification, BOM risk scoring, and early involvement during the design phase so that a footprint lock-in does not become a supply bottleneck later. In this guide, we move beyond a static datasheet view to help you integrate the 776230-1 with both mechanical confidence and supply-chain resilience.

Reading the 776230-1 Pinout and Sealed Specs Like a Design Engineer

A shallow datasheet scan often misses the details that ensure seal integrity and long-term current handling. The 776230-1 is a 35‑position vertical header with a 4 mm centerline pitch, Ampseal wire‑to‑board interface, and a contact diameter of 1.3 mm. Understanding its pinout, current rating, and material thresholds prevents field returns that stem from over‑stressed contacts or distorted housings. Unlike an IC datasheet where timing diagrams dominate, a connector like the 776230-1 communicates its design envelope through mechanical drawings, derating curves, and application specifications (the TE 108‑series documents). We contrast that structure with reference examples like the AD7763 precision ADC datasheet and the generic manufacturer data sheet template to highlight what electronic component datasheets should communicate—not just numbers, but the conditions under which those numbers hold. Always verify specs directly via Alldatasheet or authorized distributor portals.

The table below summarizes the tier‑A electrical and mechanical parameters you should extract from TE Connectivity’s official product specification. These are the values that gate thermal analysis, PCB layout, and mating force calculations.

Parameter	Value / Range	Unit / Notes
Number of Positions	35	Single vertical header
Centerline Pitch	4.0	mm (0.157 in)
Contact Diameter	1.3	mm (pin)
Orientation	Vertical (180°)	PCB mount
Connector System	Wire‑to‑Board	Ampseal sealed family
Sealing Rating (Mated)	IP67	When properly assembled with TE mating connector and wire seals
Nominal Current per Contact	8 A	At room temperature, AWG 16 wire; derate beyond 80 °C ambient
Operating Temperature Range	‑40 to +105 °C	Thermal cycling capability confirmed per TE 108‑spec
Contact Base Material	Copper alloy	Plating option dependent on suffix
Housing Material	Glass‑filled PBT	Flame retardant per UL 94 V‑0
Keying / Coding	Code 1 (standard)	Mechanical polarization to prevent mismating; verify against TE drawing

While the 8 A per‑contact rating looks generous, the derating curve is a hard constraint in an enclosed ECU where ambient temperature can easily reach 85 °C. At that temperature, continuous current per contact drops to approximately 5 A, and the aggregated current across the 35‑pin header demands careful thermal spreading in the PCB copper. The pinout is typically organized by function—power, signal, and ground returns—so mapping adjacent high‑current pins with adequate spacing or thermal relief vias is a design habit that separates passing a bench test from surviving 3,000 hours of under‑hood life.

776230-1 vs. 1-776230-1: Pin Compatibility, Coding, and Cost Trade-offs

TE Connectivity offers several 35‑position vertical headers under the Ampseal umbrella. A close variant, 1-776230-1, shares the same pin count, 4 mm pitch, and vertical orientation, yet blind substitution without verifying coding can lead to harness mismatch. The difference often lies in mechanical keying (coding) or contact plating—details that change insertion force, corrosion resistance, and even the mating connector part number. Component price comparison techniques help quantify the cents‑per‑unit impact, but in a sealed system the true cost trade‑off is field reliability. Strategies from the LM393 cross‑brand supply model translate well to evaluating alternative headers: always validate sealing performance at temperature extremes before qualifying any candidate.

The comparison matrix below highlights the key parameters that engineers must verify when considering 1-776230-1 as an alternative to 776230-1. The “selection note” column explains where the failure boundary lies.

Comparison Metric	776230-1	1-776230-1	Selection Criteria & Failure Boundary
Positions / Pitch	35, 4 mm	35, 4 mm	Identical pitch—no board layout change needed.
Orientation	Vertical, 180°	Vertical, 180°	Same footprint; tooling holes remain valid.
Keying / Coding	Code 1 (standard)	Varies—check TE drawing; often Code 2 or un‑keyed	Critical: mechanical mismatch will prevent mating even if pinout aligns. Verify mate‑with part number.
Contact Plating	Tin or gold flash (application‑dependent)	May offer gold‑over‑palladium‑nickel or selective gold for higher cycles	Plating affects contact resistance and durability; confirm with TE product spec for your BOM suffix.
Package / bulk	Tray or reel, TE standard packaging	Often tray; distributor‑specific bulk may differ	Automated assembly may require a specific feeder pitch; verify packaging code with your CM.

The coding difference is the most frequent source of field returns when a line technician forces a connector. Always download the full TE application specification (108‑ series) for both part numbers and cross‑reference the mechanical key drawing. A millimeter of misalignment can crack the header body and break the environmental seal—something no continuity test catches until moisture has already migrated into the ECU.

Where the 776230-1 Thrives: ECUs, Off-Highway, and Harsh Environment Design

The Ampseal connector family was purpose‑built for engine control units (ECUs), transmission controllers, and off‑highway machinery where vibration, moisture, and temperature swings are routine. NHTSA recall databases repeatedly show that connector‑related electrical faults—open circuits, intermittent contacts, water intrusion—can cascade into vehicle safety campaigns. Similarly, FDA recalls highlight the cost of moisture ingress in medical devices that demand sealed interconnects. These realities make the 776230-1 a natural selection not just for automotive but also for marine engine panels, agricultural GPS controllers, mining telemetry boxes, and industrial automation cabinets where a sealed wire‑to‑board interface is non‑negotiable.

In a marine application, salt spray and humidity demand that the header’s PBT housing maintains its dimensional stability across hundreds of thermal cycles. The 1.3 mm pin diameter provides a solid interference fit in the mating connector, reducing fretting corrosion under vibration. In a diesel ECU mounted directly on the engine, the ambient temperature can exceed 85 °C, which pushes the 776230-1 into its derating zone. Successful designs spread heat‑generating contacts across the connector width and use the adjacent PCB ground plane as a heat sink. When these thermal realities are ignored, a terminal can develop oxidation that increases contact resistance, creating a thermal runaway scenario that degrades the housing over time.

Off‑highway and agricultural machines present another layer: washdown chemicals. The standard Ampseal seals are compatible with most lubricants and hydraulic fluids, but aggressive degreasers or high‑pH cleaning agents can attack the seal material. Always request chemical compatibility data from TE for your specific exposure profile, and plan for a validated cleaning protocol during the design verification plan (DVP) phase.

Designing a Rugged PCB Footprint for the 776230-1 and Securing a Reliable Supply

Successful integration of the 776230-1 goes beyond the datasheet pinout: the PCB land pattern must accommodate the 1.3 mm pin diameter while leaving clearance for the seal ring, and the panel cutout needs to avoid introducing lateral stress on the header during mating. On the sourcing side, the extended allocation‑sensitive lead times mean that purchase orders should be hedged with verified distributor stock, checked in real time via platforms like Octopart. The 48h lead‑time comparison approach some procurement teams use for ICs is equally relevant for connectors—it forces distributors to reveal actual allocation depth rather than quoting a standard lead‑time. Pair that with detailed manufacturer data sheet scrutiny to spot counterfeits and batch inconsistencies before they delay production.

The mechanical clearances required to maintain the IP67 seal are not a suggestion; they are a dimensional stack‑up that involves the PCB, the header, the gasket, and the enclosure. The table below gathers the critical footprint and panel dimensions you need from TE’s application specification.

Criteria	Recommended Value	Design Notes
Plated Through‑Hole Diameter (per pin)	1.5 mm ±0.05	Ensures reliable soldering of 1.3 mm pin; avoid oversized holes that weaken barrel strength.
Pad Annular Ring	0.3 mm minimum	IPC‑2221 level B usage; larger ring preferred for vibration‑prone environments.
Seal Ring Keep‑Out Zone (top layer)	Full perimeter ring around connector footprint; no traces or vias within 2.0 mm of seal face	Prevents solder mask or copper from disturbing the gasket compression.
Panel Cutout Radial Clearance	0.5 mm around mating face	Allows float during blind‑mating; excessive clearance can misalign the seal.
PCB Thickness	1.6 mm nominal	Standard TE header tailored for this thickness; verify if using thicker PCB for heat spreading.
Standoff / Spacer Height	Follow TE drawing; typically header sits flush on PCB	Any gap under the header body introduces bending moment on solder joints.

A common pitfall is to treat the panel cutout as a purely mechanical afterthought, designed by the enclosure vendor. When the cutout edges press against the header’s mating shroud, the force can tilt the connector and create a micro‑gap in the seal face. That gap may pass an initial helium leak test at room temperature but open up after thermal cycling. Prototype builds should include a pull‑test with the actual mating connector at temperature extremes—not just at ambient.

On the sourcing front, be explicit when issuing an RFQ for the 776230-1. Specify the exact TE part number, the acceptable date‑code window (demand a certificate of conformance within 90 days), and the required packaging (tray vs. reel). This level of detail prevents a distributor from substituting a near‑equivalent with different coding. Additionally, ask for a test report or photos showing laser marking, lot traceability, and packaging label. Counterfeit Ampseal connectors have surfaced with slightly off‑color PBT and imperfect laser etching; a side‑by‑side comparison with a known‑good sample under magnification remains one of the fastest screening methods.

776230-1 Sourcing and Integration Questions from the Field

Senior engineers and procurement leads regularly face these questions about the 776230-1 connector, spanning design validation, interchangeability, and supply chain risk.

Q: What is the actual difference between 776230-1 and 1-776230-1?
A: Both are 35‑position, 4 mm pitch vertical Ampseal headers, but 1-776230-1 may have different keying (coding) or contact plating. Always compare the full TE drawing; a mechanical key mismatch will prevent mating even if the pinout matches.
Q: Can I use 776230-1 in a non‑automotive application?
A: Yes. The Ampseal series is rated for harsh environments—sealed to IP67 when mated—making it suitable for marine, off‑highway, agricultural, and industrial equipment. Verify chemical compatibility with your specific lubricants or washdown fluids.
Q: What is the per‑pin current rating and how does it derate with temperature?
A: TE specifies a nominal 8 A per contact at room temperature with AWG 16 wire. Derating curves are in the product specification (108‑ series); as ambient temperature approaches 105 °C, continuous current can drop below 5 A. Thermal analysis of the entire header is essential in tightly packed enclosures.
Q: Does TE offer a right‑angle version of this header?
A: Yes, the Ampseal family includes right‑angle and flange‑mount variants, but the part number differs (e.g., 776230‑2). Verify orientation and keying code in the full catalog because the vertical 776230-1 cannot be bent or reflowed into a right‑angle footprint.
Q: How can I spot counterfeit or relabeled 776230-1 connectors?
A: Genuine TE headers have crisp laser marking, consistent color, and a silkscreened logo. Compare the lot code with traceability documents, measure key dimensions against the official drawing, and prefer authorized distributors. Manufacturer data sheet verification and cross‑referencing Octopart pricing anomalies help flag suspicious stock.
Q: What is the recommended PCB land pattern and panel cutout for adequate sealing?
A: TE’s application specification provides a footprint with plated through‑holes for 1.3 mm pins and keep‑out zones for the seal ring. The panel cutout should avoid lateral force on the header—typically 0.5 mm radial clearance around the mating face. Improper cutout dimensions can distort the connector body and compromise the environmental seal.

References & Further Reading

For procurement‑ready pricing, allocation‑backed lead time confirmation, and technical cross‑check of the 776230-1 against your BOM, submit your inquiry through IC‑Online. Upload a complete bill of materials—mixed line items with flexible MOQ are welcome—and a member of our sourcing team will respond with verified distributor options that match your design’s exact mechanical coding and packaging requirements.