A Yageo resistor cross reference is done at series-group level, not part number to part
number. Size, resistance, tolerance, TCR and rated power narrow the field; which series
group — general purpose, high power, anti-surge, array, high voltage or current sense — and
whether it is automotive-marked decides the actual candidate. A single 0603, 1 kΩ, ±5% line
resolves to 32 real Walsin Technology (Walsin) parts, not one. Venatech holds no Yageo or
KEMET lifecycle data.
Venatech Limited, an authorised Walsin distributor in Hong Kong, writes this from all 137 of
Walsin’s chip resistor export files — 234,815 real rows — and from the two chip resistor
datasheets held on file. Every part number below exists in that data. This post does not name
a Yageo or KEMET part number and does not reproduce either manufacturer’s specifications.
What does a Yageo or KEMET chip resistor cross reference actually need?
Five fields off the incumbent datasheet to start, and a sixth decision that the five fields
cannot make. Size, resistance, tolerance, TCR and rated power come straight off a Yageo RC
series or KEMET general-purpose datasheet, and they narrow Walsin’s catalogue to a shortlist.
The decision those five fields cannot make is which series group the part should come from.
Walsin’s chip resistor catalogue is split into 14 series groups by function — general
purpose, high power, anti-surge, high voltage, current sense, array and more — and the same
five electrical fields are satisfied inside several of them at once, at the same case size.
How many Walsin series groups can hold one thick film chip resistor value?
Fourteen groups share the 234,815-row catalogue, and the split matters because each group
exists for a reason a five-field match does not test.
| Series group | Parts | What the group is for |
|---|---|---|
| Thick Film General Purpose | 75,628 | The default shelf — commercial and automotive general purpose |
| High Precision Thick Film | 52,027 | Tighter tolerance and TCR than general purpose |
| Thick Film High Power | 40,255 | Higher dissipation at the same case size |
| Thick Film High Voltage | 20,244 | Rated for working voltages above the general purpose limit |
| Thick Film Anti-Surge | 17,180 | Pulse and surge withstand beyond rated power |
| Thick Film Low Ohm Current Sense | 10,428 | Sub-ohm values for current sensing |
| Thick Film Chip Resistor Array | 7,250 | Multiple elements in one package |
| Thick Film Wide Terminal Power | 4,294 | Wide-terminal package for higher power dissipation |
| Thick Film Trimmable | 2,940 | Laser-trim target pads |
| Thick Film Array (Anti-Sulfuration) | 2,772 | Array format with sulfur resistance |
| Metal Low Ohm Current Sense | 1,188 | Metal-element current sensing, lower TCR than thick film |
| Thick Film High Ohm (>10 MΩ) | 488 | Above the general purpose resistance ceiling |
| Chip Resistor Network, Convex | 98 | Network / jumper format |
| Chip Attenuator (Convex, Pi type) | 23 | Fixed-value RF attenuator, not a resistor in function |
Figures measured from all 137 Walsin chip resistor export files, September 2026. A Yageo or
KEMET general-purpose resistor crosses most often into the first group; the other 13 exist
because one property — power, voltage, surge, ohm range or element count — pushed a part out
of the general purpose shelf.
What does a real 0603, 1 kΩ, ±5% line look like across Walsin’s catalogue?
Thirty-two real part numbers, not one, and they sit in six different series groups.
Unique to Venatech’s data. A 0603, 1,000 Ω, ±5% specification resolves to 32 real
Walsin chip resistor part numbers across 6 series groups and 23 named series: 10 in
Thick Film General Purpose, 8 in Thick Film High Power, 6 in Thick Film Chip Resistor
Array, 4 in Thick Film Anti-Surge, 2 in Thick Film High Voltage and 2 in the
anti-sulfuration array group. That is more than double the 13-part MLCC signature already
published for a single 0603 electrical specification, and it means the five fields a BOM
states — size, resistance, tolerance, TCR, rated power — do not narrow Walsin’s resistor
catalogue to one series, let alone one part.
| Series group | Parts at 0603 / 1 kΩ / ±5% | What distinguishes them |
|---|---|---|
| Thick Film General Purpose | 10 | Commercial and automotive general purpose, the default shelf |
| Thick Film High Power | 8 | Rated for higher dissipation at 0603 than general purpose |
| Thick Film Chip Resistor Array | 6 | 2, 4 or 8 elements per package, convex or concave pad |
| Thick Film Anti-Surge | 4 | Pulse withstand beyond rated power |
| Thick Film High Voltage | 2 | Higher working voltage rating |
| Thick Film Array (Anti-Sulfuration) | 2 | Array format with added sulfur resistance |
Which of the 32 is the plain commercial part I probably need?
Usually one of the 10 in Thick Film General Purpose, and that group itself splits by
automotive marking before it splits by anything electrical.
| Walsin part number | Series | TCR | Automotive? | Your Yageo/KEMET part — fill in from its datasheet | Match / mismatch |
|---|---|---|---|---|---|
WR06X102JTL |
General Purpose | ≦±100 | No | ||
WR06X102JTR |
General Purpose LF 100ppm | ≦±200 | No | ||
WR06X102JTLJ |
General Purpose (Automotive) | ≦±100 | Yes | ||
WR06X102JTLV |
General Purpose Anti-Sulfuration (Automotive) | ≦±100 | Yes | ||
WR06X102JTLZ |
General Purpose Anti-Sulfuration (Automotive) | ≦±100 | Yes | ||
MR06X102JTL |
General Purpose (Automotive) | ≦±100 | Yes | ||
MR06X102JTR |
General Purpose LF 100ppm (Automotive) | ≦±100 | Yes | ||
MR06X102JTLV |
General Purpose (Automotive) | ≦±100 | Yes | ||
SR06X102JTL |
High Grade Anti-Sulfuration (Automotive) | ≦±100 | Yes | ||
SR06X102JTLW |
High Grade Anti-Sulfuration (Automotive) | ≦±100 | Yes |
If your BOM calls for a commercial, non-automotive part, WR06X102JTL is the only one of
these 10 that fits on both counts. The other nine are real, in-catalogue parts, not errors —
they sit on the same electrical specification because an automotive or low-TCR requirement
pushed them off the plain commercial shelf, which is exactly the distinction a five-field
match will not surface. Fill the blank column from your incumbent datasheet and mark each
row yourself.
Why does the part number not paste straight into a BOM?
Because the real part number carries a space, and every one of the 32 above does. Walsin’s
own export stores a blank character between the resistance code and the packaging suffix,
not the single contiguous string shown in the table above — the space sits inside the string,
not at the edge, so it survives a trim and breaks a paste into most BOM tools or search boxes.
Unique to Venatech’s data. All 32 of Walsin’s real part numbers on the 0603, 1,000 Ω,
±5% line carry an embedded space in the raw export. This is the same defect already
measured across the full catalogue — 39,576 of 234,815 chip resistor part numbers contain
an embedded space — and this line shows it is not confined to a rare corner of the
catalogue: on this specification it is 32 of 32, 100%.
Strip the embedded space before you paste a Walsin chip resistor part number anywhere, and
confirm the resulting string against the series datasheet rather than assuming the space was
cosmetic.
How do I find out whether my Yageo or KEMET line is still available?
Ask Yageo or KEMET, or your distributor, in writing, for the exact part number on your BOM.
We hold no such list, so nothing here states that any Yageo or KEMET part is discontinued,
obsolete, end-of-life or constrained; only the manufacturer can tell you that.
We will run the Walsin side in parallel — series group, automotive marking and TCR stated for
every candidate — so a second source is qualified and ready whether or not you decide you
need one.
The short version
Work at series-group level before you work at part-number level. A 0603, 1 kΩ, ±5% line
alone resolves to 32 real Walsin parts across 6 groups; the group — general purpose, high
power, anti-surge, array, high voltage — and the automotive marking are what actually narrow
it, not the five electrical fields a BOM already states. Strip the embedded space before any
part number goes into a BOM. Confirm status with the manufacturer and qualify any candidate
yourself.
Send your Yageo or KEMET resistor specification and tell us which series group properties
matter — power, surge, voltage or current sense. We will return the Walsin candidates with
every mismatch marked and a column left for your part.
Frequently asked questions
How many Walsin chip resistors match a 0603, 1 kΩ, ±5% specification?
32 real part numbers across 6 series groups and 23 named series: 10 General Purpose, 8 High Power, 6 Array, 4 Anti-Surge, 2 High Voltage and 2 anti-sulfuration Array. The five fields a BOM states do not narrow this to one part.
Which Walsin series is the plain commercial starting point for a Yageo or KEMET general purpose resistor?
Thick Film General Purpose, which itself splits into commercial and automotive parts at the same 0603, 1 kΩ, ±5% specification. Only one of the 10 General Purpose group matches at that line, WR06X102JTL, is both commercial and plain general purpose.
Is a specific Yageo or KEMET chip resistor line discontinued?
We hold no such list, so we cannot tell you. There is no Yageo or KEMET lifecycle data, affected-part list or allocation information on file here. Ask the manufacturer or your distributor in writing for the status of the exact part number on your BOM.
Why does a Walsin chip resistor part number not paste cleanly into a spreadsheet?
Because it carries an embedded space inside the string, not just leading or trailing whitespace. All 32 real parts on the 0603, 1 kΩ, ±5% line carry one. Strip it before using the part number in a BOM or a search box, and confirm the result against the datasheet.
Are all 32 parts on a 0603, 1 kΩ, ±5% line interchangeable?
No. They differ in rated power, automotive marking, TCR and surge or array construction. They share one electrical specification and nothing else is implied by that; the series group and its datasheet decide fitness for a given design.
What do you need from me to start a Yageo or KEMET cross?
Case size, resistance, tolerance, TCR, rated power, and whether automotive qualification, anti-surge withstand or current-sense behaviour is required. If only a part number is available, send it and we will work back to the published specification.
Does Walsin publish a public datasheet for its chip resistor series?
Venatech holds two chip resistor datasheets — the MR automotive and WR general purpose series — with no public URL on file for either. Specification claims from those two are cited by filename and must be confirmed with Walsin; everything else is read from the parametric export.
Next step
Send the specification, not just a part number: size, resistance, tolerance, TCR, rated
power, and whether automotive qualification, surge withstand or current-sense behaviour is
required. Venatech Limited, an authorised Walsin distributor in Hong Kong, will return the
Walsin candidates with series group, automotive marking and TCR stated on every row, and
every mismatch marked. Confirm the status of your current line with Yageo or KEMET, and
qualify any candidate in your own circuit before release.
Send your BOM to Venatech · Browse the
Walsin chip resistor range · Read
Chip resistor power rating by case size and
Walsin automotive chip resistors: MR, SR and the AEC-Q200 split.
Cross it yourself. The cross-reference tool takes a single part number or a whole BOM column and returns the Walsin candidates with every field that differs stated plainly — qualification stays with you. Ready stock shows what is held in Hong Kong today, with an RFQ against any line.