Zero Ohm Jumper Chip Resistor: 34 High-Power Parts, Zero Datasheets We Hold

A zero ohm jumper chip resistor is not rated by its Resistance column, and 34 of the 108 Walsin jumpers we counted are high-power parts we hold no datasheet for. We parsed all 7 named jumper export files; the current rating a design actually needs sits in a PDF, not a column.

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Venatech Limited, an authorised Walsin distributor in Hong Kong, holds all 137 of Walsin Technology (Walsin)’s chip resistor export files and both of the chip resistor datasheets on file. This post is measured from the seven files whose names say “jumper” — HighPower__jumper__ONE_FIFTH_W.xlsx, High_Precision_Thick_Film_chip_resistor_Jumper.xlsx, Thick_Film_Anti_Surge_Chip_Resistor_Jumper.xlsx, Thick_Film_General_Purpose_Jumper.xlsx, Thick_Film_High_Power_Chip_Resistor_Jumper.xlsx, Thick_Film_High_Power_Chip_Resistor_Jumper_1_5W.xlsx and Thick_Film_High_Voltage_Chip_Resistor_Jumper.xlsx — and every part number below came out of one of them. A companion post, Chip resistor jumpers and 0 Ω parts: what the 000 code rates, already banked the finding that Walsin’s MR automotive datasheet tabulates jumper current by case size. We went back and isolated the high-power jumper specifically, because that datasheet does not carry its prefix.

How many of Walsin’s zero ohm jumper chip resistors are high-power parts?

108 jumper rows sit in the seven named exports, and 34 of them — just under a third — carry the high-power WF or MF prefix. We opened all seven files and counted every row: Thick_Film_General_Purpose_Jumper.xlsx returns 74, Thick_Film_High_Power_Chip_Resistor_Jumper.xlsx returns 33, and HighPower__jumper__ONE_FIFTH_W.xlsx returns 1. The other four files — High Precision, Anti-Surge, High Power 1.5 W and High Voltage — return nothing at all.

Export file	Rows returned	Prefix
Thick_Film_General_Purpose_Jumper.xlsx	74	WR, MR, SR
Thick_Film_High_Power_Chip_Resistor_Jumper.xlsx	33	WF, MF
HighPower__jumper__ONE_FIFTH_W.xlsx	1	WF
High Precision, Anti-Surge, High Power 1.5 W, High Voltage	0 each	—

Those two high-power files hold 34 rows and 33 distinct part numbers — WF04A000 PTL is filed identically in both, once as the 1/5 W special case and once inside the general high-power export. We have not seen the high-power jumper counted separately from the full 108 anywhere else.

Which two resistor datasheets does Venatech hold, and does either cover the high-power jumper?

No. Venatech holds exactly two chip resistor datasheets — Walsin_MR_Automotive_Thick_Film_Chip_Resistor.pdf and Walsin_WR_General_Purpose_Chip_Resistor.pdf — and neither one’s title or prefix is WF or MF. The companion post above resolved a current rating for the MR-prefix automotive jumper straight from the MR datasheet’s case-size table. We checked whether the same move works for the high-power line and it does not: of the 34 high-power jumper rows, 28 carry WF and 6 carry MF, and we hold no PDF with either prefix in its name.

That means for those 34 part numbers there is no current rating anywhere in what Venatech holds — not in the export, and not in a datasheet. We say so rather than quoting a number we cannot show you.

What do the Resistance, Tolerance and TCR columns actually say on a high-power jumper row?

Resistance reads 0Ω on all 34 rows. Tolerance reads the literal string Jumper on all 34 — not a percentage, not blank, but a text flag sitting in a field reserved for a percentage everywhere else in the same 137-file export. TCR reads a dash on 33 of the 34 and ≦±100 on exactly one, WF10P000 PTL, a 1210-case part rated 1/2 W. A temperature coefficient printed for a part whose resistance is stated as exactly zero is a contradiction, and it is the same single-row anomaly the companion post flagged — we are not re-claiming it as new here, only confirming it survives inside the high-power subset specifically.

Field	Value on all 34 high-power jumper rows
Resistance	0Ω
Tolerance	Jumper (text, not a percentage)
TCR	- on 33, ≦±100 on 1 (WF10P000 PTL)
Current rating column	None exists in the 10-column schema

Why does the same 0402 high-power jumper carry two different power ratings?

Because one character in position five of the part number — A or P — changes the published Rated Power, and we found it happening at 3 of the 7 case sizes inside the high-power jumper files alone. At 0402, WF04A000 PTL is rated 1/5 W and WF04P000 PTL is rated 1/8 W, a 1.6x spread on the same series group and footprint. At 1206, WF12A000 PTL is 3/4 W against WF12P000 PTL at 1/2 W, a 1.5x spread. At 2512, WF25A000 PZL is 3 W against WF25P000 PTL at 2 W, also 1.5x.

Case size	“A” part	Rated Power	“P” part	Rated Power	Spread
0402 (1005)	WF04A000 PTL	1/5 W	WF04P000 PTL	1/8 W	1.6x
1206 (3216)	WF12A000 PTL	3/4 W	WF12P000 PTL	1/2 W	1.5x
2512 (6432)	WF25A000 PZL	3 W	WF25P000 PTL	2 W	1.5x

Three of the seven case sizes in this file carry that split; the other four (0603, 0805, 1210, 2010) list only one figure each. We counted this across the high-power jumper file specifically; the companion post showed one pair of this kind at 0402 and we extended the count to the whole file.

Which case sizes does the high-power jumper line actually cover?

Seven, from 0402 to 2512, and the wider 108-row jumper set reaches further in both directions. The high-power files alone (WF/MF) span 0402 (1005), 0603 (1608), 0805 (2012), 1206 (3216), 1210 (3225), 2010 (5025) and 2512 (6432). The full 108-row jumper set, including the general-purpose and anti-surge families, reaches down to 01005 (0402) and 0201 (0603) and holds one size the high-power line does not: 1218 (3248). Published Rated Power across the full 108 spans 1/32 W at 01005 up to 3 W at 2512 — a 96:1 range on a component whose Resistance column reads the same 0Ω throughout.

Can Venatech show you a current rating for a WF-prefix zero ohm jumper?

Not from what we hold today. We can show you one for an MR-prefix automotive jumper, because the MR Automotive datasheet tabulates rated and peak current by case size for that series. We cannot do the same for WF06P000 PTL, WF10P000 PTL, WF25A000 PZL or any other WF or MF jumper, because neither of our two resistor PDFs carries that prefix. The honest position is to say that plainly rather than to interpolate a number from a series that is not the one on the part.

Requirement: 0603, automotive, zero ohm jumper, documented current rating	Part number	Prefix	Rated Power (export)	Datasheet held	Match / mismatch
	MR06X000 PTL	MR	1/8W	Yes — MR Automotive	Match — current table exists, see companion post
	WR06X000 PTLJ	WR	1/10W	Partial — WR General Purpose, automotive suffix unconfirmed	Mismatch — sheet does not name the J suffix
	WF06P000 PTLJ	WF	1/8W	No	Mismatch — no datasheet held for WF
	MF06P000 PTL	MF	1/8W	No	Mismatch — no datasheet held for MF
	SR06X000 PTL	SR	1/10W	No	Mismatch — no datasheet held for SR

One match out of five candidates at the same case size and the same job. We will not tell you the other four are interchangeable with the one we can document; we are telling you which one we can back with a PDF today.

What should you do with a high-power jumper that has no documented current limit?

Ask us for it by part number before you commit a footprint to it, because the gap sits in our documentation, not necessarily in Walsin’s. The trade press has reported passive component lead times stretching through 2026 as AI server and EV production draw on the same capacity, which is exactly the moment a buyer wants a second source confirmed rather than assumed.

1. State the prefix, not just “0603 jumper.” MR, WR, WF, MF, SR and SA all make a zero ohm part in the same footprint, and only one of those prefixes has a current table in Venatech’s hands today.
2. Cross your BOM in one pass on the free cross-reference tool. It decodes 18 manufacturers’ part numbers and matches against 800,000+ crossable Walsin part numbers, returning every field we hold rather than a single pass/fail verdict.
3. Check ready stock before you commit to a production slot — that page is a dated snapshot as at 23 September 2026, not a live feed.
4. Ask us for the WF or MF datasheet. We hold two resistor PDFs today and neither covers the high-power prefix; your request is what puts it on the list to Walsin.

Check us while you are here: we are an authorised Walsin Technology distributor in Hong Kong, confirmable with Walsin directly, and we hold 28 Walsin datasheets, 451 pages, sent on request.

The short version

A zero ohm jumper chip resistor publishes a Rated Power and nothing else useful for current selection. We counted 108 jumper rows across 7 named export files, and 34 of them — 28 WF and 6 MF — carry the high-power prefix that neither of Venatech’s two resistor datasheets covers. One character in position five changes the published rating by 50 to 60 percent at three of the seven high-power case sizes, and exactly one of the 34 rows carries a TCR figure that should not exist on a jumper at all.

Send us the jumper positions off your BOM with the prefix and case size for each, and we will tell you — honestly — which ones we can back with a current rating today and which ones are still a request to Walsin.

For how rated power behaves by case size on the resistive (non-jumper) parts, see Chip resistor power rating by case size. The full range is on the Walsin chip resistor range page.

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Frequently asked questions

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