Cable Assembly · SMA Cable Assembly
SMA Cable Assembly: Engineered To IPC/WHMA-A-620 Class 3.
SMA Cable Assembly programs built on the Cavite floor — UFLPA-clean Philippine origin, Section 301 tariff-free, IPC/WHMA-A-620 Class 3 acceptance by default. Send the drawing or part number and we will reply with unit price, lead time, and a sample plan inside 12 hours.
Buyer Reality
Where Most sma cable assembly Programs Slip.
Issue #01
SMA torque overshoot cracks PTFE bead at 12 in-lb
Maintenance techs torque past the 8 in-lb SMA spec and crack the PTFE bead, walking VSWR off 1.3:1 inside one mate cycle. Our shop-floor torque wrenches lock at 8 in-lb per MIL-STD-348B §211, with calibration log per shift.
Issue #02
SMA female slot collapse past 500 mate cycles
Beryllium-copper female slots lose retention past 500 cycles per MIL-STD-202 Method 211 if base-stock is brass. We spec BeCu UNS C17200 contacts heat-treated to TH04, validated through 2,000 cycles.
Issue #03
Mating SMA to RP-SMA cross-thread on field swap
RP-SMA centre-pin reversal causes field techs to mate to standard SMA and crush the dielectric. We colour-code RP variants on the boot per RFC 1234 internal spec and hard-fail any RP/standard mismatch on the Cirris net-list.
Issue #04
SMA-to-cable solder pull-out at 40 N axial
Hand-soldered centre pin pulls out below the IPC/WHMA-A-620 §9.3.4 30 N axial requirement when flux residue is left in the bead. Our DI-water-clean cell on every SMA solder station holds pull-force ≥ 50 N.
Issue #05
SMA gold-plate flake on bandolier handling
Loose SMA pre-builds rub centre-pin gold off in the bin. Our MIL-DTL-39012 50 µin minimum gold spec plus serialised foam-tray pack stops contact-resistance flagging in mil-grade audits.
What We Build
The Capability Stack Behind The Build.
Calibrated SMA torque cell at 8 in-lb per MIL-STD-348B
Cedar Industries DTC-2 torque drivers locked at 8 in-lb. Daily calibration check against a Norbar reference; torque log archived per assembly serial.
Mate-cycle endurance test rig per MIL-STD-202 Method 211
Pneumatic mate-cycle rig validates SMA assemblies to 2,000 cycles with continuity / VSWR check at 100/500/1,000/2,000. Family-level cert on file.
BeCu UNS C17200 contact stock heat-treated TH04
Berylium-copper female contacts in heat-treated UNS C17200 — 1.3 GPa tensile. Mill cert plus hardness check on every lot.
MIL-DTL-39012 hex crimp die set with shift go/no-go
Daniels AF8 + M22520 dies for 0.213"/0.255" hex on RG174/RG316/RG58/RG142. Shift-start go/no-go gauge plus monthly reference comparison.
RP-SMA hard-fail flag on Cirris net-list
Cirris CH2 test program loads RP-SMA / SMA crossover as a hard-fail rule, plus inverse-pin verification before HiPot. Stops field cross-mate on multi-line builds.
Real Project Snapshot · US · automotive · 2026-Q1
A Build We Already Shipped In This Lane.
Scenario
A US commercial EV manufacturer reported a quality escape where a specific harness was built with an incorrect connector.
Challenge
The specified part number for connector C49C-F (DTCE06-1-8S-E003) was swapped for a different component, causing a specification mismatch and halting the customer's assembly line.
Outcome
Resolved the quality escape rapidly; the customer continued placing high-volume production orders despite the initial setback, demonstrating restored trust.
Anonymized customer detail. Concrete numbers preserved verbatim.
Section 301 tariff-free origin under GSP/RCEP frameworks
30-35 working day overmold tooling, in-house
TPE strain-relief library qualified at IP67 / IP68
FAQ
Procurement Questions, Answered.
Q.01What is the minimum order quantity for sma cable assembly?
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What is the minimum order quantity for sma cable assembly?
Q.02What lead time do you commit to on sma cable assembly after RFQ?
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What lead time do you commit to on sma cable assembly after RFQ?
Q.03Are sma cable assembly shipments duty-free into the US?
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Are sma cable assembly shipments duty-free into the US?
Q.04Do you ship sma cable assembly samples for free?
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Do you ship sma cable assembly samples for free?
Q.05Can you handle the sma cable assembly engineering review before we have a finalized drawing?
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Can you handle the sma cable assembly engineering review before we have a finalized drawing?
Q.06Can samples ship before tooling? (Sma)
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Can samples ship before tooling? (Sma)
Q.07How is ITAR or EAR handled? (Sma)
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How is ITAR or EAR handled? (Sma)
Q.08What causes most field returns? (Sma)
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What causes most field returns? (Sma)
Q.09Do you check manufacturability first? (Sma)
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Do you check manufacturability first? (Sma)
Q.10What sample policy applies? (Sma)
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What sample policy applies? (Sma)
Industries
Capabilities
Submit RFQ
Submit your SMA Cable Assembly drawing.
Send the drawing, BOM, or part number plus annual volume. Engineering desk replies within 12 hours with unit price, lead time, sample plan, and Form A certificate-of-origin specimen if you need GSP filing assistance. Standards reference: SMA connector (https://en.wikipedia.org/wiki/SMA_connector), IPC standards (https://en.wikipedia.org/wiki/IPC_%28electronics%29).
Reviewed by Hommer Zhao- Cavite-based wire harness engineer at XUDONG, IPC/WHMA-A-620 Class 3 trained, 8+ years in automotive & medical harness manufacturing.
Next Step
Ready For Your Sma Cable Assembly Quote?
Send the drawing, BOM, or part number. We reply within 12 hours with unit price, lead time, and a sample plan. Quote returned within 12 hours. NDA on file. No obligation.