For a high voltage chip resistor in Chilean battery storage electronics, Walsin Technology (Walsin) lists 20,244 high voltage part numbers, 3,004 of them in UL safety-certified series. A 1206, 1 megohm divider brief returns 12. Venatech Limited, an authorised Walsin distributor in Hong Kong, crosses and quotes them.
Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this for power and BMS engineers in Chile who design, service or localise the string-voltage sensing, insulation monitoring and bleeder circuits of battery energy storage systems, and for the buyers who source spares for them. We parsed the four Walsin high voltage files, Thick_Film_High_Voltage_Chip_Resistor_0_5.xlsx to Thick_Film_High_Voltage_Chip_Resistor_5.xlsx, and our ready-stock list as at 23 September 2026. Every part number is real, and the market facts come from one report fetched on 11 November 2026.
How much battery storage is Chile building?
4,705 MW under construction. According to ESS News on 29 July 2026, citing Chile’s Ministry of Energy, 33 battery projects totalling 4,705 MW and 19,223 MWh were under construction at the end of June 2026, with 27 more systems of 2,524 MW in testing and 2,291 MW already operating.
The report says the operating figure is 35% of Chile’s target of 6 GW of storage by 2030, and that the ministry expects the goal could be reached early. Those are the ministry’s figures as reported, not ours. Our conclusion: each of those systems carries string-voltage measurement and insulation-monitoring boards that sit across DC links of up to about 1,500 V, and those boards are built from high voltage resistor chains. We have no relationship with any project named.
How many high voltage chip resistors does Walsin list?
20,244 distinct part numbers. We counted 20,244 distinct Walsin high voltage chip resistors across the four .xlsx files: 10,437 in the standard series, 6,803 in the automotive series, 1,502 in the UL Safety Certification series and 1,502 in its automotive twin, each in 0603, 0805, 1206, 2010 and 2512.
| Walsin high voltage series | Parts |
|---|---|
| Thick Film High Voltage Chip Resistor | 10,437 |
| Thick Film High Voltage Chip Resistor (Automotive) | 6,803 |
| High Voltage, UL Safety Certification | 1,502 |
| High Voltage, UL Safety Certification (Automotive) | 1,502 |
The UL series matters where the resistor chain bridges a safety barrier, as in an insulation monitor. Our guide to high voltage chip resistors explains how they differ from general-purpose parts, and the chip resistor range lists every family.
Which Walsin 1206, 1 megohm high voltage chip resistors cross a divider brief?
Twelve part numbers. We filtered the high voltage files to 1206 and 1 megohm and found 12 Walsin part numbers: 5 at 1%, 1 at 0.5%, 1 at 2% and 5 at 5%, in standard, automotive, UL and UL automotive series, all rated 1/4 W with TCR of plus or minus 100 or 200 ppm/°C.
The table takes a typical string-divider brief, 1206, 1 megohm, 1%, plus or minus 100 ppm/°C, and shows the closest rows. Your incumbent goes in the last column.
| Walsin part | Series | Tolerance | TCR (ppm/°C) | Rated power | Match / mismatch with the brief | Your incumbent |
|---|---|---|---|---|---|---|
WK12V1004FTL |
High Voltage | 1% | ±100 | 1/4 W | Match on every field | |
WF12V1004FTL |
High Voltage | 1% | ±100 | 1/4 W | Match on every field | |
WF12N1004FTL |
HV, UL Safety Certification | 1% | ±100 | 1/4 W | Match, UL series | |
WF12N1004FTLJ |
HV, UL Safety Cert. (Automotive) | 1% | ±100 | 1/4 W | Match, UL and automotive | |
WK12V1004FTLJ |
High Voltage (Automotive) | 1% | ±100 | 1/4 W | Match, automotive series | |
WK12V1004DTL |
High Voltage | 0.5% | ±100 | 1/4 W | Match, tighter tolerance | |
WK12V105 JTL |
High Voltage | 5% | ±100 | 1/4 W | Mismatch: tolerance is wider |
A match is a match on export fields. Maximum working and overload voltage, and any UL file reference, come from Walsin’s datasheet and the certifier’s database, so confirm both for your string voltage before release.
How do you build a 1,500 V sense divider from chip resistors?
By sharing the voltage across a chain. Ten 1 megohm resistors in series across 1,500 V each see 150 V and dissipate 22.5 mW, so the chain’s limit is the per-resistor working voltage in Walsin’s datasheet, not power, which stays far below the 1/4 W rating.
The arithmetic also sets accuracy: with 1% parts and a plus or minus 100 ppm/°C TCR, a 40 °C swing in a Chilean container moves each resistor by up to 0.4%, so match TCR across the chain and the bottom resistor. Use a UL-series part where the chain crosses a safety barrier, and keep creepage on the board to your standard. Our walkthrough of passives for a solar string inverter shows the same chain in a PV design. We give no grid-code or certification advice; confirm with your compliance team.
How do Chilean buyers get Walsin high voltage resistors from Hong Kong?
By quote, through our authorised Walsin channel. Our ready-stock list as at 23 September 2026 holds 183 Walsin chip resistor lines, mostly general-purpose values such as 1 megohm in 0603 (WR06X1004FTL); the high voltage series above are quoted to order through our authorised Walsin channel.
That suits a storage integrator or service team, which needs a few reels of one value for a divider chain rather than a broad mix. The ready-stock list is a dated snapshot, never live-synced. Request a quote and we source the part; we give no stock or lead-time promise.
How can Venatech help a battery storage integrator in Chile?
How Venatech helps: send the divider and bleeder lines, get the Walsin rows. Venatech Limited is the authorised Walsin distributor in Hong Kong, and VenaMatch decodes 18 manufacturers’ part numbers and crosses 800,000+ parts to Walsin, marking every field match or mismatch.
Paste up to 500 part numbers into the cross-reference tool, or upload a BOM. We serve small lots from Hong Kong, quote fast and help you check each cross; request a quote through the site. Walsin is the line we are authorised for; Stackpole and Viking are lines we supply. We give no customs advice.
The short version
Chile has 4,705 MW of battery storage under construction, and every system senses string voltages with high voltage resistor chains. Walsin covers that with 20,244 high voltage chip resistors, 3,004 in UL safety-certified series; a 1206, 1 megohm divider brief returns 12 part numbers, six of which match a 1%, 100 ppm brief.
Send us your divider’s string voltage, chain length and accuracy target, and we will return the Walsin rows with every field marked. Does your sense chain cross a safety barrier?
Related reading
- High voltage chip resistors and the limit to check
- Passives for a solar string inverter
- Passives for a battery management system
- Free cross-reference tool and ready-stock snapshot
Last reviewed 11 Nov 2026.
Sources
Fetched 11 November 2026.
- ESS News, “Chile reaches 4.7 GW of battery storage under construction”, 29 July 2026: https://www.ess-news.com/2026/07/29/chile-reaches-4-7-gw-of-battery-storage-under-construction/
Frequently asked questions
How much battery storage is under construction in Chile?
ESS News reported on 29 July 2026, citing Chile’s Ministry of Energy, that 33 battery projects of 4,705 MW and 19,223 MWh were under construction at the end of June 2026, with 2,291 MW operating. These are the reported figures.
How many high voltage chip resistors does Walsin make?
We counted 20,244 distinct Walsin high voltage chip resistors, 3,004 of them in UL Safety Certification series, in 0603 to 2512.
Which Walsin part matches a 1206, 1 megohm, 1% high voltage resistor?
WK12V1004FTL and WF12V1004FTL match on every export field, and WF12N1004FTL is the UL series option. Confirm the working voltage against Walsin’s datasheet.
How many resistors does a 1,500 V divider need?
Enough that each resistor’s share of the voltage stays below its datasheet working voltage. Ten 1 megohm parts across 1,500 V each see 150 V and 22.5 mW.
Does Venatech stock high voltage chip resistors in Hong Kong?
Our snapshot as at 23 September 2026 holds 183 Walsin chip resistor lines, mostly general-purpose. High voltage series are quoted to order through our authorised Walsin channel; we make no lead-time promise.
Can Venatech supply buyers in Chile?
Yes. Venatech Limited is an authorised Walsin distributor in Hong Kong, serving buyers in Chile in small lots. We give no customs or certification advice; confirm with your compliance team.