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FAKRA, HFM, HSD and H-MTD Assemblies

Rosenberger Connector Cable Assembly for Controlled RF and Data Links

Specify the connector family, cable group, traceable sourcing and whole-assembly acceptance criteria for your RF or differential data link.

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Quick answer

We build custom cable assemblies around customer-specified Rosenberger families, with connectors sourced with purchase traceability and cable compatibility confirmed at quote stage. RF coax links using FAKRA or HFM need frequency-based acceptance checks, while HSD or H-MTD differential data links need per-pair checks against the buyer’s protocol/OEM specification. Rosenberger’s published connector limits are reference inputs, not results of our assemblies.

TL;DR

  • Fix the family, exact part, coding, cable group and mating hardware before quoting.
  • RF coax and differential data links require different acceptance records for the finished assembly.
  • Tooling is confirmed per cable group at quote stage; quantities are quoted per program.
  • Request connector purchase traceability, lot/date codes and an agreed first-article record.

Built for Buyers Who Cannot Treat Rosenberger Connectors as Commodity Parts

A Rosenberger connector cable assembly needs an approved connector family, compatible cable, shield termination, mechanical support and inspection plan. Mating fit alone does not establish the performance of the finished interconnect.

Fix the exact connector references and cable group before agreeing the build. Record the installed route, cable exit, mating access and acceptance limits on the drawing so the quotation covers the complete assembly.

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Which Rosenberger family? Series codes and published limits

Rosenberger publishes the following connector-level limits. They are not results of our assemblies; the selected cable, connector variant, termination and agreed test scope determine what must be verified for the finished build.

Rosenberger family comparison — published connector-level limits, not assembly results
FamilyRosenberger series codeImpedancePublished frequency rangePublished data rateMating cyclesSource
FAKRA5950 ΩDC up to 6 GHz; depends on cable, connector, assembling and testing—≥25 standard; ≥5 waterproofRosenberger FAKRA; Rosenberger FAKRA Technical Data (Code 59)
HFM (High-Speed FAKRA-Mini)AM50 ΩDC up to 20 GHzUp to 28 Gbps≥25Rosenberger HFM
HSD (Rosenberger HSD)D4; HSD+ 99; HSD t D2100 ΩDC up to 6 GHz (HSD, +2, +4, +8); DC up to 1 GHz (HSD t)Up to 8 Gbps≥25; waterproof ≥5Rosenberger HSD
H-MTDE6; H-MTD e E9; H-MTD+ 99100 ΩDC up to 20 GHzUp to 56 Gbps≥25; waterproof ≥5Rosenberger H-MTD

Rosenberger specifies the FAKRA interface according to ISO 20860-1 and SAE/USCAR-18 (Rosenberger FAKRA Technical Data (Code 59)). Its FAKRA applications include cameras, sensors, GPS/telematics/navigation, radio antenna, infotainment, Bluetooth/WLAN and keyless entry (Rosenberger FAKRA).

Rosenberger lists primary and secondary locks for HSD and H-MTD (Rosenberger HSD; Rosenberger H-MTD). HFM and H-MTD offer optional Connector Position Assurance (CPA), which can only be closed when fully mated (Rosenberger HFM; Rosenberger H-MTD). Specify the exact locking variant on the drawing.

Reading a FAKRA part number

How to read the chart’s sample string: 59 K 1 30 - 1 M4 A4 -y. This is Rosenberger’s explanatory chart sample, explicitly not an orderable part number. Confirm the exact part in Rosenberger’s catalogue or a distributor listing (Rosenberger FAKRA Codes & Codings).

Rosenberger sample-string positions — Rosenberger FAKRA Codes & Codings
Sample positionMeaning in Rosenberger’s chart
59Connector series FAKRA
KFemale jack; S = male plug, W = tool, Z = plastic housings and accessories
1 (after K)Straight; 2 = right angle, 5 = panel connector with round flange
30Successive number
1 (after the hyphen)Crimp; 3 = solder crimp, 4 = PCB mounting, 5 = solid centre contact
M4Cable group
A4Plating
-yPlaceholder for the required coding
Rosenberger FAKRA colour codings — Rosenberger FAKRA Codes & Codings
CodingColour
ABlack
BWhite
CBlue
DBordeaux violet
EGreen
FBrown
GGrey
HViolet
IBeige
KCurry
LCarmine red
MPastel orange
NPastel green
ZWater blue

Rosenberger describes a secure coding system that helps prevent misuse (Rosenberger FAKRA). Record the mechanical coding and colour letter with the exact mating parts.

Selected Rosenberger cable-group chart rows — Rosenberger FAKRA Codes & Codings
Cable groupChart impedanceCables named in the chart
0150 ΩRG 178, RG 196
0250 ΩRG 316/U, RG 174
0275 ΩRG 179
0650 ΩRG 58
0975 ΩRG 59
E350 ΩRTK 008
E450 ΩRG 58-LL
H150 ΩRTK 013
M450 ΩRTK 031, RTK 032
D6120 Ωe.g. LEONI Dacar 077

These are selected chart entries, not approval to pair every listed cable with every FAKRA connector. Rosenberger directs the assignment of specific cables to the assembly instructions for each connector (Rosenberger FAKRA Codes & Codings).

RF coax verification: FAKRA and HFM

The following FAKRA Code 59 figures are Rosenberger’s connector-level published limits, not results of our assemblies. Use the exact connector and cable instruction and set a separate acceptance limit for the complete cable assembly (Rosenberger FAKRA Technical Data (Code 59)).

Rosenberger FAKRA Code 59 technical data — Rosenberger FAKRA Technical Data (Code 59)
ParameterPublished connector-level limit or test reference
Impedance50 Ω
Return loss≥18 dB
Insertion loss≤0.1 × √f(GHz) dB
Insulation resistance≥1 GΩ
Centre and outer contact resistance≤5 mΩ
Test voltage750 V DC
Working voltage60 V DC
Contact current≤4 A DC; depends on cable size, connector and housing
RF leakage≥65 dB
Engagement force≤25 N (single, standard); ≤45 N waterproof
Disengagement force≥2 N
Retention forceLatch ≥110 N; primary lock ≥80 N; secondary lock ≥60 N
Temperature−40 °C to +105 °C
VibrationDIN EN 60068-2-64
Mechanical shockDIN EN 60068-2-27
Thermal shockDIN EN 60068-2-14 Na

FAKRA insertion-loss calculation

Insertion-loss limit per connector pair = 0.1 × √f(GHz) dB, using the limit published by Rosenberger (Rosenberger FAKRA Technical Data (Code 59)). The frequency points below are calculation inputs, not assembly test results.

FAKRA insertion loss — calculated from Rosenberger's published limit (Rosenberger FAKRA Technical Data (Code 59)), to four decimal places
Frequency pointf (GHz)Calculated maximum insertion loss per connector pair (dB)
GPS L11.575420.1255
2.4 GHz2.40.1549
5.9 GHz5.90.2429
6 GHz60.2449

Return loss to VSWR

Γ = 10^(−RL/20); VSWR = (1+Γ)/(1−Γ). The minimum return-loss requirement gives the corresponding maximum VSWR, calculated from Rosenberger's published limit (Rosenberger FAKRA Technical Data (Code 59); Rosenberger HFM).

VSWR — calculated from Rosenberger's published limit (Rosenberger FAKRA Technical Data (Code 59) for FAKRA; Rosenberger HFM for HFM), to two decimal places
FamilyFrequency bandPublished minimum RL (dB)Calculated maximum VSWR
FAKRADC up to 6 GHz; cable, connector, assembling and testing dependent181.29
HFMDC–≤3 GHz251.12
HFM>3–≤6 GHz201.22
HFM>6–≤12 GHz151.43
HFM>12–≤15 GHz121.67
HFM>15–≤20 GHz101.92
Rosenberger HFM published return-loss mask — connector-level requirements (Rosenberger HFM)
Frequency bandMinimum return loss
DC–≤3 GHz≥25 dB
>3–≤6 GHz≥20 dB
>6–≤12 GHz≥15 dB
>12–≤15 GHz≥12 dB
>15–≤20 GHz≥10 dB

These calculations describe connector limits. A finished assembly also includes cable loss and termination quality, so the buyer’s acceptance limit must be set for the whole assembly.

What to put in the acceptance record

  • Assembly part and revision, connector and cable references, finished length and traceability identifiers.
  • Frequency points, insertion loss, return loss/VSWR and RF leakage where specified, with the buyer’s whole-assembly limits.
  • Continuity, pinout and insulation checks, including the defined shield path.
  • Network analyser setup, calibration reference plane, fixtures, test date and results tied to the assembly identifier; agree the equipment and report scope at quote stage.

Differential data verification: HSD and H-MTD

Rosenberger publishes 100 Ω connector impedance for HSD and H-MTD. Its HSD t supports shielded (STP) or unshielded (UTP) twisted pair, while H-MTD suits STP, UTP and SPP cables (Rosenberger HSD; Rosenberger H-MTD). These are connector-level published specifications, not results of our assemblies.

Rosenberger lists USB, LVDS, Ethernet, CAN, FPD-Link and GMSL for HSD (Rosenberger HSD). For H-MTD it lists 100BASE-T1, 1000BASE-T1, 2.5/5/10GBASE-T1, FPD-Link, GMSL and MIPI A-PHY (Rosenberger H-MTD). A listed protocol does not set a finished-assembly acceptance mask.

Per-pair checks for the buyer to define
CheckRequired definition
Differential impedance by TDRDefine the per-pair impedance tolerance, fixture and measurement boundary in the protocol/OEM specification.
Insertion loss and return lossSpecify the protocol limit, frequency range and acceptance mask for each pair of the finished assembly.
Pair-to-pair crosstalkInclude where specified; state the pair combinations and applicable limit set.
Continuity and pinout per pairRecord pair identity, end views and mapping, with opens and shorts checks.
Shield continuity for STPDefine the complete shield path and termination checks.

Test limits come from the specified protocol/OEM requirement, not the connector product page. Record the applicable revision, fixtures, pair mapping and full assembly boundary before agreeing a pass/fail criterion.

Cable group, tooling and assembly process

The cable group determines the compatible contact, ferrule and tooling selection. Fix the exact cable and connector assembly instruction before quoting. We confirm tooling per cable group at quote stage.

Rosenberger publishes the following hand crimp tool kits for on-site replacement of damaged connectors (Rosenberger HFM; Rosenberger H-MTD). They illustrate why tooling is tied to the cable group; this list is not a claim that we own these tools.

Rosenberger published service tool kits — cable-group examples
FamilyTool kitCable groupOrder numberSource
HFMAMW001-SETM4365609Rosenberger HFM
HFMAMW007-SET02428412Rosenberger HFM
HFMAMW021-SETAX499987Rosenberger HFM
H-MTDE6W003-SETCA10120440Rosenberger H-MTD

For the first article, agree checks for the selected contact and ferrule, preparation dimensions against the connector instruction, termination inspection, shield continuity, mating and locking, coding, cable exit, length and whole-assembly electrical acceptance. Include CPA closure where the selected variant uses it.

Connector sourcing and traceability

As of 25 October 2026, Rosenberger’s authorised distributor list includes TTI, Mouser, Digi-Key, RS Components, RFMW, Powell, Heilind and Distrelec. Check the current list before purchase (Rosenberger authorised distributors).

For the connectors in each build, request purchase traceability: the distributor invoice or certificate of conformance, exact connector reference and lot/date code. Link these records to the assembly BOM and build identification.

Custom Wire Assembly / OurPCB does not claim to be a Rosenberger authorised distributor, partner or licensee, or to own Rosenberger crimp tooling. Tooling is confirmed per cable group at quote stage.

Capability scope

Quote scope follows the selected interface, compatible cable and agreed inspection record.

RF Coax Interface Review

Specify the connector references, cable group, mating hardware, route length and frequency points for the quotation.

Differential Data Definition

Identify HSD or H-MTD, cable construction, pair mapping and the protocol/OEM acceptance specification.

Shield and Strain-Relief Details

Document shield preparation, ferrule capture, cable exit support and the required inspection points.

Electrical and RF Test Planning

Agree continuity, insulation and RF or differential data measurements and records at quote stage.

First-Article Review

Define mating fit, orientation, length, locking and test acceptance checks before release.

Reorder Documentation

Record the approved BOM, drawing revision, connector traceability, test plan, labels and packing requirements.

Technical range and limits

Primary scopeFinished cable assemblies around customer-specified Rosenberger FAKRA, HFM, HSD and H-MTD interfaces
Connector definitionExact catalogue part, coding, gender, cable group, mating hardware and exit orientation
Cable constructionCoax or differential data cable matched to the selected connector assembly instruction
LengthSpecify finished length in millimetres or metres between named drawing datums, with tolerance
ValidationBuyer-defined whole-assembly limits and agreed records; connector specifications alone are insufficient
QuantityQuoted per program
DocumentationApproved BOM, drawing revision, first-article criteria, traceability and requested test records
Scope boundaryFinished cable assembly; no claim to manufacture bare Rosenberger connectors

The quotation must identify the finished assembly’s acceptance limits and records. Published connector ratings do not establish the performance of an untested assembly.

Release process

Interface and Application Review

Define the mating interface, family, cable route, installation constraints and intended RF or differential data use.

Cable and Connector BOM Lock

Fix the exact connector, cable group, cable part and coding; confirm tooling and traceable sourcing at quote stage.

First-Article Review

Agree the sample checks for mating, orientation, length, shield termination, locks and whole-assembly electrical acceptance.

Assembly Instruction Control

Use the selected connector assembly instruction to define cable preparation, contact and ferrule termination, inspection points and drawing revision.

Test and Release

Agree the test scope and release record, including assembly identity, results, acceptance limits and any approved deviations.

Decision framework for RFQ stage

If the mating interface is fixed, specify the Rosenberger family and exact parts. If it is still open, resolve the required signal type, cable route and mating hardware before selecting the connector.

For FAKRA or HFM, define RF frequency points and whole-assembly loss limits. For HSD or H-MTD, identify the protocol/OEM specification and per-pair acceptance checks. Continuity alone does not demonstrate either RF or differential data performance.

Freeze coding, exit direction, length, shield treatment, locking and labels during first-article review. Confirm tooling, sourcing evidence and the requested records at quote stage.

Rosenberger Connector Cable Assembly FAQ

RFQ-stage answers for engineers and buyers specifying connector assemblies.

What is a Rosenberger connector cable assembly?

It is a finished interconnect combining customer-specified Rosenberger connectors, compatible cable, shield termination and mechanical support with an agreed assembly test plan. The connector family and the complete cable acceptance criteria must both be defined.

Can you build Rosenberger connector assemblies from a sample instead of a drawing?

A sample can start a quotation review. Capture the exact connector and cable references, coding, gender, length, orientation, pinout and shield termination in a controlled drawing or build record, then agree acceptance criteria before release.

Should I specify RF testing or is continuity enough for Rosenberger coax assemblies?

Continuity verifies connectivity; it does not establish RF performance. Define the finished assembly frequency points, insertion loss, return loss or VSWR, RF leakage where specified, and continuity/insulation checks. The acceptance limit must include cable loss and termination quality.

Can one assembly combine Rosenberger on one end and another connector on the other?

Submit both exact mating interfaces for a mixed-end quotation. Identify the cable, impedance, shield path, orientation and route, then set acceptance limits for the complete signal path before approving the BOM.

What documents should I send for a Rosenberger connector cable assembly quote?

Send the drawing or sample, exact connector and cable references, cable group, coding, length and tolerance, pinout, orientation, labels, quantities and traceability requirements. Include the RF frequency points or differential data protocol/OEM specification and requested acceptance records.

Is Rosenberger HSD the same as H-MTD?

No. Rosenberger lists HSD as D4, HSD+ as 99 and HSD t as D2, with 100 Ω impedance, up to 8 Gbps and DC up to 6 GHz for HSD, +2, +4 and +8; HSD t is DC up to 1 GHz. H-MTD is E6, H-MTD e is E9 and H-MTD+ is 99, with 100 Ω impedance, DC up to 20 GHz and up to 56 Gbps. These are connector-level published limits, not results of our assemblies or evidence that the interfaces are interchangeable.

Sources: Rosenberger HSD; Rosenberger H-MTD

What do the FAKRA colour codes mean?

Rosenberger uses colour and mechanical coding to help prevent misuse through a secure coding system. Its chart maps A Black, B White, C Blue, D Bordeaux violet, E Green, F Brown, G Grey, H Violet, I Beige, K Curry, L Carmine red, M Pastel orange, N Pastel green and Z Water blue. Specify the coding letter and exact mating parts; colour alone does not define a complete connector part number.

Sources: Rosenberger FAKRA; Rosenberger FAKRA Codes & Codings

Vendor qualification detail from another cable assembly program

A North American 3D vision and industrial measurement OEM required a strict NDA and multi-tier approval before sharing drawings. The vetting phase took three months; once approved, the formal RFQ included a 1x20-pin Samtec connector, a 1x10-pin Samtec connector, 100 mm cable length, and a quoted 4-week lead time.

Get a Quote for a Rosenberger Connector Cable Assembly

Send the connector reference, mating hardware, cable type, finished length, orientation, quantity, and test criteria. Tooling, quantities, sourcing and acceptance records are confirmed at quote stage.