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Harmony Type-B evaluation board

Harmony EVB Type-B

A TSNJ-5A6L26 with two 47 µF capacitors between SMA connectors. Drop it between any noisy supply and its load with two cables.

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Configuration
Type-B
Connectors
SMA in and out
Bandwidth
DC to 6 GHz
The red Harmony Type-B evaluation board between SMA adapters, connected to a Picotest VRTS3 board

The Type-B evaluation board on our bench, between a Picotest VRTS3 noise source and the spectrum analyzer cable.

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3 in stock Ships direct from TransSiP
Unit price$85.00
Extended price$85.00
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Prices are in USD. Tax and shipping are added at checkout. Pay by card online, or request a quote to pay by PO or wire transfer. Each board ships with the Harmony Materials Package.

Overview

  • The board behind our published Silent Switcher, VCXO, TPS7A94 and Picotest VRTS3 measurements
  • Insert it between a supply and a clock, LNA or LDO with SMA cables. No soldering is needed to evaluate.
  • Two boards in series form the dual Type-B configuration, measured to 20 GHz
  • Ships with the Harmony Materials Package: datasheet, Quick Start Guide, EVB Read Me and layout kit

Applications

  • Characterizing your own rail before layout
  • A/B tests against your current filter network
  • Clock phase-noise and jitter measurements

Specifications

Board

DeviceTSNJ-5A6L26 Harmony PI Filter
ConfigurationType-B: Harmony plus two 47 µF, 10 V capacitors at VOUT
ConnectorsSMA (VIN) and SMA (VOUT)
DocumentationHarmony Materials Package

Performance

Insertion loss of the part alone, in Type-B, and in dual Type-B up to 20 GHz. Plotted from instrument marker readings.

Insertion loss (S21), 30 kHz to 20 GHz

  • Harmony alone (native)
  • Type-B: Harmony + two 47 µF
  • Dual Type-B, two EVBs in series
Insertion loss (S21), 30 kHz to 20 GHz Lines join the instrument marker readings on a log axis. Between 2 MHz and 500 MHz the Type-B trace sits on the network analyzer’s own noise floor, so the true attenuation there is deeper than the plot can show, below the noise floor of most instruments: about −120 dB with a single Type-B, and −140 to −160 dB with dual Type-B. Conventional capacitor networks reach 80 to 90 dB at best. 10 kHz 100 kHz 1 MHz 10 MHz 100 MHz 1 GHz 10 GHz -110 dB -90 dB -70 dB -50 dB -30 dB VNA noise floor, about −100 dB Harmony alone (native): -31.7 dB at 30 kHz Harmony alone (native): -61.6 dB at 1 MHz Harmony alone (native): -86.5 dB at 13 MHz Harmony alone (native): -52.1 dB at 1 GHz Harmony alone (native): -37.0 dB at 6 GHz Type-B: Harmony + two 47 µF: -50.0 dB at 30 kHz Type-B: Harmony + two 47 µF: -81.8 dB at 900 kHz Type-B: Harmony + two 47 µF: -99.5 dB at 2 MHz Type-B: Harmony + two 47 µF: -97.5 dB at 500 MHz Type-B: Harmony + two 47 µF: -80.6 dB at 1.6 GHz Type-B: Harmony + two 47 µF: -58.5 dB at 6 GHz Dual Type-B, two EVBs in series: -83.1 dB at 1 GHz Dual Type-B, two EVBs in series: -84.1 dB at 6 GHz Dual Type-B, two EVBs in series: -62.2 dB at 10 GHz Dual Type-B, two EVBs in series: -51.4 dB at 20 GHz

Lines join the instrument marker readings on a log axis. Between 2 MHz and 500 MHz the Type-B trace sits on the network analyzer’s own noise floor, so the true attenuation there is deeper than the plot can show, below the noise floor of most instruments: about −120 dB with a single Type-B, and −140 to −160 dB with dual Type-B. Conventional capacitor networks reach 80 to 90 dB at best.

Source: Datasheet TSNJ-DS-R009; Noise Free Innovations 26V2, p. 6

Measured in application circuits

Peak rejectionAbout −120 dB with a single Type-B, −140 to −160 dB with dual Type-BBelow most instruments’ noise floors
Type-B S21, 2 MHz to 500 MHzAbout −100 dB, at the VNA’s noise floorDatasheet R009 §1.2
Dual Type-B S21−62 dB at 10 GHz, −51 dB at 20 GHzRohde & Schwarz ZNB
Type-B shunt impedance104 to 255 µΩ, 1 MHz to 100 MHzDual Type-B: 2 to 5 µΩ, 14 MHz to 300 MHz
ADI LT8622S output ripple10 mVp-p to 4.48 µVp-p (2,232×)1 V, 2 A, Type-B at VOUT
ADM7150 LDO baseband noise20 dB less 1/f noiseDefense radio, by permission
122.88 MHz VCXO jitter from a noisy 3.3 V rail233 fs to 20 fsLab ideal: 18 fs

Full setups, instruments and photos for each result are in the case studies.

Read the case studies

The Type-B circuit

Place Harmony at the point of load with two 47 µF, 10 V capacitors at VOUT. No small-value capacitors. Use the same three parts on every rail, and use two Type-B stages in series to reach 20 GHz.

  • Near a switcher, put pin 1 close to the power inductor and the feedback node.
  • Connect each GND pad to the plane with vias right at the pad. Stitch the ground layers generously.
  • Return the bulk capacitors to the ground plane, not to Harmony’s GND pad.

All layout rules in the design center

Type-B configuration: one Harmony PI Filter and two 47 µF capacitors An isometric drawing of a red circuit board. The rail enters at VIN, passes through the Harmony PI Filter, and continues to VOUT, where two 0805 capacitors connect it to ground. Rows of ground vias surround the filter. TSNJ A4WW TransSiP Harmony PI Filter TSNJ-5A6L26, 2.6 × 2.2 × 0.9 mm Two 47 µF, 10 V 0805, at VOUT VIN VOUT Ground stitching vias around every GND pad

Design resources

Articles

Datasheet

  • Harmony PI Filter datasheet, Rev 9PDF, 14 pages, March 2026 Download

Getting started

  • Harmony Quick Start GuidePDF, 7 pages, rev 25V3 Request
  • EVB Read Me: how Harmony works with bulk capacitorsPDF, 15 pages Request

CAD models

  • Altium Designer footprint, TSNJ-5A6L26.PcbLibLand pattern per datasheet §4, 108 KB Download
  • Altium Designer schematic symbol, TSNJ-5A6L26.SchLibPins 1 VIN, 3 VOUT, 2/4/5/6 GND, 6 KB Download
  • 3D model, TSNJ-5A6L26.stpSTEP, 2.60 × 2.20 × 0.90 mm, 30 KB Download

Layout

  • PCB layout guideline: grounding and bulk-capacitor placementPDF, rev 25V3 Request

Application notes

  • Optimizing the ADI LT3045 ultra-low-noise LDO with HarmonyPDF, 4 pages Request
  • Ultra-low phase noise: 122.88 MHz VCXO for 5GPDF, 1 page Request
  • Why the classic target-impedance approach is not effectivePDF, 11 pages Request
  • Noise-free Silent Switcher: ADI LT8622S posterPNG Request

Case studies

  • TransSiP Noise Free Innovations: application examplesPDF, 23 pages, rev 26V2 Request

Quality and compliance

  • RoHS 3 certificate of compliancePDF, TSQA-RoHS3 Download
  • EU REACH certificate of compliancePDF, 13 pages, TSQA-REACH, February 2026 Download
  • Halogen-free certificate (IEC 61249-2-21)PDF, TSQA-HF Download
  • TSNJ-5A6L26 reliability qualification (RTV program)PDF, 3 pages, TSQA-TSNJ-RTV Download
  • TSNJ-5A6L26 FIT and MTTF predictionPDF, 2 pages, TSQA2407, July 2024 Download

"Request" items ship together in the Harmony Materials Package. One request covers all of them, and we send the package to your work email.

Videos

LT8622S switching noise, part 1: measuring ripple to 6 GHz

The same rail measures 4 mVp-p on a 1.5 GHz scope and 10 mVp-p on a 6 GHz Keysight Infiniium MXR.

LT8622S switching noise, part 2: the Silent Switcher becomes noise-free

Harmony takes the 2 MHz fundamental from about −59 dBm to −97 dBm (≈ 8.9 µVp-p) and removes microwave spurs.

Silent Switcher EMI, part 1: why filter placement matters

With Harmony placed next to the inductor of an LT8622S/LT8624S, part of the radiated energy bypasses the filter and couples into VOUT.

Buy

Every orderable model in the Harmony family, with list prices and inventory.

Model Description Package Packing, qty Temp range Price, 1 pc Price, 1k pcs RoHS Inventory
TSNJ-5A6L26 Harmony PI Filter, 5 A LGA-2226 Cut strip, 1+; Reel, 3,000 −55 °C to +85 °C $4.22 $2.66 Yes In stock
Buy Quote
Harmony EVB Type-B Harmony Type-B evaluation board Evaluation board, SMA in and out Evaluation board, 1 to 3 Lab use $85.00 Quote Yes 3 in stock Buy Quote

List prices are in USD for the stated quantity and are subject to change. Volume pricing and delivery schedules are available by quote. Distributor stock is a snapshot taken Oct 24, 2026.

Evaluate on your rail

The Harmony EVB Type-B connects between your supply and your load with two SMA cables, so you can measure the difference before you lay out a board. Parts are also sold from a single piece.

See the evaluation board

Volume and custom quotes

For 1,000 pieces or more, scheduled deliveries or custom ratings, we reply with price and lead time.

Request a quote

Distributors

Harmony is stocked at DigiKey, which ships globally, and through regional partners in China, Israel, Turkey, Italy, Taiwan, Korea and Japan.

See all distributors

Related products

Harmony PI Filter, 5 A

TSNJ-5A6L26. A passive power-integrity filter for DC rails. It delivers power at the intrinsic noise floor from DC to 6 GHz, and up to 20 GHz in a dual configuration, from a 2.2 × 2.6 mm LGA.

$4.22 each for 1, $2.12 at volume

View TSNJ-5A6L26