I’ll research TE Connectivity 282837-3 and create a cited application guide covering wiring, PCB layout, alternatives, and sourcing, clearly flagging any unverified details.
TE’s product page confirms the main ratings, but distributor listings disagree on wire range and screw torque. The drawing lookup is still unresolved, so I’ll flag those assembly details rather than present them as verified.
The TE Connectivity Buchanan 282837-3 is a three-position, single-row, 5.08 mm-pitch PCB screw terminal block with side wire entry and through-hole solder termination. It is commonly used to connect field wiring for power and low-frequency signals to a PCB without a separate mating cable connector; TE identifies its circuit application as power and signal. TE product data
1. Quick Specifications
Rating interpretation: This is a passive connector, not an IC with a supply-voltage operating window. The verified manufacturer product page provides an operating voltage and maximum contact-current rating, but those are not permission to operate at every rating simultaneously; conductor size, PCB cop...
Created the 282837-3 Application and Usage Guide with all seven requested sections, source links, practical wiring guidance, and two functionally similar alternatives.
The guide explicitly flags unresolved torque, wire-preparation, and footprint details; neither alternative is claimed as a verified drop-in replacement.
The TE Connectivity Buchanan 282837-3 is a three-position, single-row, 5.08 mm-pitch PCB screw terminal block with side wire entry and through-hole solder termination. It is commonly used to connect field wiring for power and low-frequency signals to a PCB without a separate mating cable connector; TE identifies its circuit application as power and signal. TE product data
1. Quick Specifications
Rating interpretation: This is a passive connector, not an IC with a supply-voltage operating window. The verified manufacturer product page provides an operating voltage and maximum contact-current rating, but those are not permission to operate at every rating simultaneously; conductor size, PCB copper, ambient temperature, agency conditions, and the end-product safety standard govern the usable operating point.
Table
Parameter
Verified value
Classification / practical interpretation
Manufacturer / family
TE Connectivity / Buchanan
Manufacturer identification
Positions / rows
3 / 1
Configuration
Pitch
5.08 mm (0.200 in)
Nominal contact spacing
Operating voltage
300 VAC
Manufacturer-listed operating rating; not a verified DC rating or an IC absolute maximum
Contact current
13.5 A maximum
Manufacturer contact rating; not a recommended current for every wire size or PCB
Operating temperature
−40 to +110 °C
Manufacturer-listed operating range; current-versus-temperature derating not verified
Wire size
30–16 AWG; 0.05–1.3 mm²
TE product-page range; distributor conflict noted below
PCB termination
Through-hole solder
Not SMT; use a solder process qualified for the component
Wire termination / entry
Clamp and screw / side entry, 90°
Wire enters parallel to the PCB in the common installed configuration
Screw
M3, nickel-plated brass
Do not infer tightening torque from thread size
Contact
Tin-plated brass
Manufacturer-listed contact materials
Housing
Green PA 66
Manufacturer-listed housing material
Tail length
3.5 mm
Verify seating and protrusion against actual board thickness
Packaging
Box, quantity 200
Manufacturer packing quantity, not a universal distributor MOQ
Separate absolute-maximum table / typical operating point
Not verified
Do not relabel catalog ratings as an IC-style absolute-maximum table
All numerical specifications above are verified against the TE Connectivity product page, except entries explicitly marked not verified.
Assembly values still unresolved: The manufacturer's drawing and application specification did not produce citation-backed extracted evidence during this research. A mirrored drawing lists 0.5 N·m tightening torque, while DigiKey lists 0.68 N·m; DigiKey also lists 16–28 AWG rather than TE's 16–30 AWG. Do not use the distributor torque as an assembly instruction or assume the two wire ranges have identical approval conditions. Obtain the current TE drawing and application specification and resolve the conditions before releasing assembly instructions. Wire-strip length, finished-hole diameter/tolerance, body envelope, and a qualified solder-temperature profile remain unverified here. TE documents · DigiKey listing
2. Pinout & Connections
There are three independent electrical terminals. No terminal has an intrinsic VIN, GND, enable, or signal function: assign functions in the schematic and label the wire-entry face accordingly. The following is a practical low-voltage DC power-and-signal example, not a manufacturer-defined pinout.
Table
Pin Number
Pin Name
Description
Best Practice
1
Terminal 1; example VIN_EXT
First independent wire-to-PCB connection
Route through appropriately selected input protection if used for power; mark polarity on the board.
2
Terminal 2; example GND
Second independent wire-to-PCB connection
Tie to circuit return only when the application assigns it that function; size the return copper for the full return current.
3
Terminal 3; example SIGNAL
Third independent wire-to-PCB connection
Route to the protected interface or load required by the application; no pull-up is required by the terminal block itself.
The current library footprint labels the pads Pin_1, Pin_2, and Pin_3. Before fabrication, verify the physical position numbering and wire-entry orientation against the current TE drawing; a square pad is only a PCB convention and does not establish wire polarity. Do not rely on a left-to-right interpretation when viewing the solder side.
3. Standard Application Circuit
For a low-voltage DC field-wiring connection, use the example assignment above:
Terminal 1 receives the external positive supply. Connect it to a selected fuse/current limiter and reverse-polarity protection, then to the downstream supply input.
Terminal 2 receives the supply return and connects to the board return network.
Terminal 3 carries the application-specific low-frequency signal, or can be left unconnected and explicitly labeled spare.
Required passives: none for the connector itself. No bypass capacitor, CC resistor, LED resistor, or pull-up is needed merely to use this screw terminal block. Protection and filtering depend on what is attached: size a TVS device for the normal voltage and credible cable transients, select overcurrent protection for the weakest current-carrying element, and use downstream regulator/IC datasheets to choose local capacitors. A universal fuse rating, TVS voltage, or capacitor value cannot be specified without the system requirements.
Place cable-transient protection near the connector with a short return path; place regulator and IC decoupling close to the corresponding power pins rather than moving all decoupling to the terminal block. These are system-level integration recommendations, not TE-mandated component values.
Wire installation: De-energize the connection, open the clamp, strip to the currently approved TE length, insert the conductor fully without trapped insulation or exposed stray strands, tighten using the approved torque, and perform a gentle retention check. Do not assume ferrules, multiple conductors per terminal, or tinned stranded-wire ends are approved without explicit conductor-preparation guidance. Provide external strain relief so cable pulls and screwdriver force do not load the solder joints.
4. PCB Layout & Routing Guidelines
The following are engineering layout recommendations; dimensional release must use TE's product drawing, which TE explicitly directs designers to use for design activity. TE product data and drawing index
Footprint and orientation: Use the verified 5.08 mm pitch, but obtain finished-hole size/tolerance, pin cross-section, body outline, and pin-to-body offsets from the current drawing. Keep the side-entry openings and screwdriver path clear of tall components and enclosure walls; include cable bend and strain-relief space.
Current-carrying copper: Size both supply and return paths from actual current, copper thickness, layer location, and permissible temperature rise using a qualified PCB current-capacity method, such as IPC-2152. Use short, broad copper paths and avoid narrow pad necks; 13.5 A connector capability does not make an arbitrary PCB trace suitable for 13.5 A.
Thermal relief and solderability: Balance soldering heat flow with current capacity. If thermal-relief spokes are used, include their narrowest total copper cross-section in the current analysis; if solid plane connections are used, qualify the soldering process for complete barrel wetting without damaging the housing.
Isolation: Determine creepage and clearance from the end-product standard, working voltage, pollution degree, overvoltage category, and insulation requirements. Pitch is not clearance: subtract pad and copper extents, and do not route unrelated copper through required isolation regions. The 300 VAC component rating does not certify a mains PCB or enclosure.
Protection and signal paths: Put cable-interface protection near the entry and keep sensitive signals away from high-current routes. Differential impedance is not specified for this terminal block; do not treat it as a controlled-impedance USB or high-speed connector. Place downstream decoupling at the consuming IC.
5. Common Pitfalls / Things to Watch Out For
Treating the connector rating as a complete system rating. Thin wire, narrow traces, undersized relief spokes, or high ambient temperature can limit current well below the listed maximum. Likewise, 300 VAC and 5.08 mm pitch alone do not establish compliant mains insulation or touch safety.
Releasing assembly instructions from an unverified catalog value. Conflicting torque and wire-range listings can cause damaged screws, inadequate clamping, or use outside approved conditions. Resolve the manufacturer drawing and application specification, verify physical terminal order, and label polarity before building a cable harness.
6. Popular Alternatives & Equivalents
No drop-in replacement was verified. The following are verified existing products from other manufacturers with a similar field-wiring function; neither is being represented as footprint-compatible. Recheck holes, body envelope, entry direction, wire preparation, current/voltage approval conditions, and assembly process before substitution.
Three positions, one row, 5.08 mm pitch, screw connection with tension sleeve, linear PCB pins; manufacturer lists 17.5 A nominal current and 400 V under III/2 conditions.
Functionally similar only. Same nominal pitch does not verify pin size, drill fit, seating offsets, or housing clearance. Manufacturer-specific ratings and conductor conditions apply.
Three pins, horizontal entry, through-hole wire-protector terminal block.
Functionally similar only; not the same nominal footprint. Pitch is 5.00 mm rather than 5.08 mm. Use its own footprint and conductor/assembly instructions; do not force it into the TE footprint.
Sources are the linked manufacturer product pages. Flux-library drop-in links are not supplied because no drop-in candidate was established; library availability would not by itself prove compatibility.
7. Sourcing & Purchasing Guide
Table
Attribute
Details
Primary Distributors
A direct DigiKey listing was checked; ordering code A113321-ND. LCSC lists MPN 282837-3 as C589616. Confirm each channel's current authorization, traceability, region, and stock before purchase; no current Mouser or Arrow offer was independently verified.
Packaging Options
TE lists box packaging with quantity 200; DigiKey describes bulk. No tape-and-reel or cut-tape option was verified. Ask how small quantities are repacked and protected.
Standard MOQ
DigiKey's checked listing permits 1 unit; TE's manufacturer packing quantity is 200. Packing quantity and minimum order quantity are different. Other distributors may require different multiples.
Sourcing Advice
Purchase through a manufacturer-confirmed authorized/franchised channel with traceable documentation. Untraceable marketplace stock introduces counterfeit and substitution risk. Match the exact MPN 282837-3, not just the family number; TE's 3-282837-3 page describes a nine-position part, so additional prefixes are not automatically packaging suffixes. Confirm packaging separately with the seller.
Source checks: 2026-10-06. Stock and prices change; this guide is not a procurement quote. No distributor quantity is a guarantee of immediately available production inventory.
Sources
TE Connectivity 282837-3 manufacturer product page:https://www.te.com/en/product-282837-3.html — primary source for the verified quick specifications, materials, termination, and packaging. No page revision/date displayed in the extracted content.
TE manufacturer drawing / datasheet-equivalent mechanical document:ENG_CD_282837_J.pdf, Terminal Block, PCB Mount Side Entry Wire, Stacking w/Interlock, 5.08mm Pitch, revision J as identified by TE's document filename. Available through the Product Drawings section of the manufacturer page above. Direct PDF download URL and drawing date were not resolved; dimensional content remains unverified in this guide.
TE application specification:ENG_SS_114-20079_F.pdf, document 114-20079, revision F as identified by the manufacturer filename. Available through the Product Specifications section of the manufacturer page. Direct URL/date and applicable assembly instructions were not resolved.
TE product specification:ENG_SS_108-20166_B.pdf, document 108-20166, revision B as identified by the manufacturer filename; manufacturer page links it under Product Specifications. Content and publication date not verified.
TE different-prefix ordering example:https://www.te.com/en/product-3-282837-3.html — manufacturer identifies nine positions, demonstrating why the full ordering code must be checked.
Evidence boundary: Manufacturer webpage facts are verified from primary web content and cited as such. The datasheet evidence service remained pending after a retry; no datasheet-derived numerical assembly or footprint details are presented as confirmed. This is an application guide, not a footprint audit, agency approval review, or released production assembly instruction.