A Swedish drives design that senses hundreds of amps with a 2512 chip shunt can start at 0.2 milliohm with Stackpole’s CSNL2512-3W. Walsin’s lowest value in our export is 0.5 milliohm: 0 part numbers at 0.2 or 0.3, 4 at 0.5, and 8 each at 1 and 2 milliohm in 2512 at 3 W.
Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this for a design or sourcing engineer at a Swedish industrial drives, motor control or power electronics maker who needs a very low-value sense resistor. Walsin Technology (Walsin) is the only line we are authorised for; Stackpole Electronics (SEI) is a line we supply. The Walsin side is our own chip resistor export, 234,815 rows and 234,401 distinct part numbers, re-measured on 10 November 2026. The Stackpole side is its CSNL2512-3W datasheet, fetched the same day.
What is ABB replacing at SSAB in Sweden, and why does a drives buyer care?
Converter drives, motors and transformers in a steel mill. In a press release dated 20 August 2024, ABB stated it would deliver switchgear, control systems and main drives and motors for the finishing mill at SSAB’s Borlange hot-rolling mill in Sweden, replacing converter drives, motors and transformers in three stages starting in summer 2025, within a reinvestment project that runs 2024 to 2027.
We read ABB’s release on 10 November 2026; the order value is not stated and the facts are ABB’s, not ours. The release also notes SSAB plans a new fossil-free steel mill in Lulea. Our inference is plain: heavy drives are being replaced in Swedish industry, and every drive has current feedback that comes down to a shunt of a few milliohm. We have no relationship with ABB or SSAB and say nothing about what either buys.
What does Stackpole’s CSNL2512-3W datasheet state?
A 3 W, 2512 metal plate sense resistor down to 0.2 milliohm. Stackpole’s CSNL2512-3W datasheet, read on 10 November 2026, lists values of 0.0002, 0.0003, 0.0005, 0.001 and 0.002 ohm, tolerance 1 percent for 0.2 to 0.5 milliohm and 5 percent for 1 and 2 milliohm, and TCR of plus or minus 175, 150, 75, 50 and 50 ppm in that order.
The datasheet rates the part at 3 W at 70 degrees Celsius, states a rated current of 122.47 A at the lowest value, and lists it as RoHS compliant, lead-free, halogen-free, REACH compliant and AEC-Q200 compliant. It describes the part as designed for high-power current sensing.
Where does Walsin’s 2512 metal plate shelf start, value by value?
At 0.5 milliohm. We read the lowest non-zero resistance across all 234,815 rows of the Walsin export: it is 0.0005 ohm, and no part number is below it; at 2512 and 3 W, the Walsin export holds 4 part numbers at 0.5 milliohm, 8 at 1 milliohm and 8 at 2 milliohm.
The table lays Stackpole’s five values against Walsin. The last column is for your incumbent.
| Value | Stackpole CSNL2512-3W (tolerance, TCR) | Walsin 2512, 3 W part numbers | Walsin example (plus or minus 1%) | Match / mismatch | Your incumbent |
|---|---|---|---|---|---|
| 0.2 milliohm | 1%, 175 ppm | 0 | none | Mismatch: no Walsin part number at this value | |
| 0.3 milliohm | 1%, 150 ppm | 0 | none | Mismatch: no Walsin part number at this value | |
| 0.5 milliohm | 1%, 75 ppm | 4 | WW25AR0L5FTL, TCR 70 ppm or better |
Match on value, tolerance, power and TCR | |
| 1 milliohm | 5%, 50 ppm | 8 | WW25BR001FTL, TCR 70 ppm or better |
Match on value, power; tolerance tighter; mismatch on TCR (70 against 50 ppm) | |
| 2 milliohm | 5%, 50 ppm | 8 | WW25AR002FTL, TCR 70 ppm or better |
Match on value, power; tolerance tighter; mismatch on TCR (70 against 50 ppm) |
For the method of reading these series, see our post on low-ohm current sense: thick film or metal.
How many Walsin parts cover the milliohm ladder at 2512 and 3 W?
Twenty, across the three values Walsin reaches. We counted 4 plus 8 plus 8 = 20 distinct Walsin part numbers at 2512 and 3 W between 0.5 and 2 milliohm; across all sizes and powers, 114 part numbers are at or below 2 milliohm and 58 at or below 1 milliohm.
Those 114 sit in 2512 (70), 1206 (34), 1225 (3), 0612 (3), 0805 (2) and 0306 (2). If your drive needs 0.2 or 0.3 milliohm, the options are a different shunt construction altogether or two resistors in parallel at 0.5 milliohm, which changes the dissipation, the layout and the tolerance stack. That is a design decision, not ours. We have not seen the ladder counted this way anywhere.
What does the Hong Kong shelf hold at these values?
Nothing at milliohm values. We read the stock list as at 23 September 2026: it holds 254 chip resistor lines, 0 in any metal plate series, and the lowest value among the lines that match our export is 0.27 ohm, WW08WR270FTL, an 0805 at 1/4 W.
The ready stock list is a dated snapshot, never live-synced. Ask through the site for current availability.
How can Venatech help a Swedish drives or power electronics team?
How Venatech helps starts with a free paste box. The cross-reference tool, VenaMatch, decodes 18 manufacturers’ part numbers and covers 800,000+ crossable parts. Paste up to 500 part numbers, or an Excel or CSV file, and each Walsin candidate returns with every field marked match or mismatch. Upload a BOM for a full review, and see the chip resistor range.
Worked example from our own export: a 0.3 milliohm, 2512, 3 W shunt returned zero Walsin part numbers, and the nearest is 0.5 milliohm. We would rather say that than show a list that fails. We hold no office, entity or stock in Sweden; we serve from Hong Kong in small lots, and you request a quote through the site. We hold no ISO 9001 or IATF 16949 certificate and give no legal, customs or conformity advice. Qualification stays with you.
The short version
- Stackpole CSNL2512-3W covers 0.2 to 2 milliohm at 3 W in 2512, per its datasheet read 10 November 2026.
- Walsin’s lowest value is 0.5 milliohm; 20 part numbers cover 0.5 to 2 milliohm at 2512 and 3 W.
- At 1 and 2 milliohm the Walsin TCR ceiling is 70 ppm against Stackpole’s 50.
- Nothing at these values is on our 23 September 2026 shelf.
Paste your shunt list into the free cross-reference tool and read each field as match or mismatch. Qualification stays with you.
Frequently asked questions
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What is ABB doing at SSAB Borlange?
Per ABB’s release of 20 August 2024, it is delivering switchgear, control systems and finishing-mill main drives and motors, replacing converter drives, motors and transformers in three stages from summer 2025. These are ABB’s statements, not ours.
What values does Stackpole CSNL2512-3W cover?
0.2, 0.3, 0.5, 1 and 2 milliohm at 3 W in 2512, per its datasheet read on 10 November 2026. Tolerance is 1 percent at the three lowest values and 5 percent above. Confirm against the current datasheet.
What is the lowest value in the Walsin chip resistor export?
0.0005 ohm, or 0.5 milliohm. There are no part numbers at 0.2 or 0.3 milliohm. At 2512 and 3 W, 4 part numbers sit at 0.5 milliohm, such as WW25AR0L5FTL.
Is a Walsin 1 milliohm 2512 a drop-in match for Stackpole’s?
On value and power, yes: WW25BR001FTL is 1 milliohm at 3 W with a tighter 1 percent tolerance. Its TCR ceiling is 70 ppm against 50 ppm. Compare footprint and construction too, and qualify in your circuit.
Is Stackpole an authorised Venatech line?
No. Venatech is authorised for Walsin only. Stackpole is a line we supply. We give no price, lead time or stock guarantee, and the ready stock list is a snapshot dated 23 September 2026.
Do you hold stock or an office in Sweden?
No. We hold no office, entity or stock in Sweden; our locations are Hong Kong, Shenzhen, Singapore and Jiangmen. We give no legal, customs or conformity advice; confirm with your compliance team.
Related reading
- Low-ohm current sense: thick film or metal
- Chip resistor power rating by case size
- Cross-referencing chip resistors to Walsin
- Free cross-reference tool and ready stock
Last reviewed 10 Nov 2026. Sources: ABB press release, 20 August 2024 (new.abb.com, fetched 10 Nov 2026); Stackpole Electronics CSNL2512-3W datasheet (seielect.com, fetched 10 Nov 2026); Venatech Walsin chip resistor export and stock list as at 23 September 2026, re-measured 10 Nov 2026.