For a soft termination capacitor in the test and support electronics of an aircraft MRO shop in Singapore, Walsin Technology (Walsin) lists 1,671 soft termination MLCC in three series, and 14 of them sit at 100 nF X7R in 0805. Venatech, Walsin’s authorised distributor in Hong Kong, holds 30 soft termination lines on its shelf and crosses the rest free.
Venatech Limited, an authorised Walsin distributor in Hong Kong, wrote this for an engineer around Changi who builds or repairs test benches, ground support equipment and shop electronics for aircraft maintenance, where boards are handled, bolted down and vibrated far more than in a consumer product. We parsed Walsin’s MLCC export, 00_ALL_MLCC_parts_combined.xlsx (24,026 rows, 23,601 distinct part numbers), and our stock list as at 23 September 2026. We re-measured every count on 11 November 2026. Walsin MLCC are commercial and automotive grade parts; we make no aerospace qualification claim for any of them.
What did AviTrader report about ST Engineering at Changi?
A fourth airframe MRO site in Singapore. According to AviTrader on 9 October 2026, ST Engineering opened an 84,000 square metre aircraft maintenance facility at Changi, its fourth airframe MRO site in Singapore, with four wide-body bays that are expected to raise its wide-body maintenance capacity in Singapore by 40 percent.
The report says the site could let about 100 more aircraft be serviced a year once fully operational and that more than 500 people are expected to work there after ramp-up. Those are AviTrader’s figures, not ours. The link we draw is ours: more hangar capacity means more test sets, ground power units, tooling controllers and repair benches in use around Changi, and those are the boards where a flex-cracked capacitor causes a fault that is hard to find. We have no relationship with ST Engineering and say nothing about what it buys.
What does a soft termination capacitor protect against?
Flex cracks. A soft termination MLCC places a conductive polymer layer inside its end terminations, so when the board bends the polymer takes some of the strain that would otherwise crack the ceramic; Walsin offers 1,671 such part numbers across its SH, SG and ST series.
Ceramic capacitors are brittle, and a crack from board flex often starts under the termination where it cannot be seen. It may pass test and then fail later as a short or a leak, especially across a supply rail. Boards in MRO equipment are screwed into chassis, carried, dropped and vibrated, and repaired boards are flexed again during rework. Our explainer on flex cracking and board bend shows where on a board the strain concentrates.
How many Walsin soft termination MLCC are there?
1,671. We counted 1,671 distinct Walsin soft termination MLCC part numbers: 1,488 in the SH series (silver-polymer), 65 in the SG series (copper-polymer) and 118 in the ST series, which is automotive and qualified to AEC-Q200 according to the series name.
By dielectric, 1,193 are X7R, 449 are NP0, 27 are X5R and 2 are X7T. That breadth lets a Changi engineer keep soft termination across decoupling, filtering and timing positions rather than only the big case sizes. The Walsin MLCC range lists the series, and our guide to soft termination MLCC: SH, SG, ST and VT compares them.
Which Walsin 100 nF 0805 soft termination parts cross a 50 V brief?
Seven match exactly. We filtered the soft termination rows to 100 nF in 0805 and found 14 X7R part numbers; 10 are rated 50 V or more and 7 of those are 10 percent tolerance, the brief we set for a decoupling position on a 28 V test bench, and 2 of those are ST series parts qualified to AEC-Q200.
Your incumbent goes in the last column.
| Walsin part | Series | Tolerance | Rated voltage | Match / mismatch with the brief | Your incumbent |
|---|---|---|---|---|---|
ST21B104K500 |
ST (AEC-Q200) | 10% | 50 V | Match, automotive grade | |
ST21B104K101 |
ST (AEC-Q200) | 10% | 100 V | Match, automotive grade | |
SG21B104K500 |
SG (copper-polymer) | 10% | 50 V | Match | |
SG21B104K101 |
SG (copper-polymer) | 10% | 100 V | Match | |
SH21B104K500 |
SH (silver-polymer) | 10% | 50 V | Match | |
SH21B104K101 |
SH (silver-polymer) | 10% | 100 V | Match | |
SH21B104K201 |
SH (silver-polymer) | 10% | 200 V | Match, highest voltage | |
SH21B104J500 |
SH (silver-polymer) | 5% | 50 V | Match, tighter tolerance | |
SH21B104J101 |
SH (silver-polymer) | 5% | 100 V | Match, tighter tolerance | |
SH21B104M500 |
SH (silver-polymer) | 20% | 50 V | Mismatch: wider tolerance | |
SH21B104K250 |
SH (silver-polymer) | 10% | 25 V | Mismatch: voltage below the brief | |
SH18B104K500 |
SH (silver-polymer) | 10% | 50 V | Mismatch: 0603 body; on our snapshot |
The 0805 rows we checked are 1.25 mm thick. A match is a match on export fields. Take DC bias, ripple and the bend test figure from Walsin’s own datasheets, which we hold as 19_Soft_Term_SH.pdf, 20_Soft_Term_SG.pdf and 12_Soft_Term_Automotive_ST.pdf.
Why does a 28 V bench need a 50 V capacitor?
Because X7R loses capacitance under DC bias. An X7R MLCC at a high fraction of its rated voltage can deliver well under its nominal capacitance, so a designer decoupling a 28 V rail commonly picks 50 V or 100 V parts; 10 of the 14 soft termination 100 nF 0805 parts we counted are rated 50 V or more.
Voltage margin also helps against transients when equipment is plugged into aircraft or ground power. The exact capacitance at your rail voltage comes from the DC bias curve in Walsin’s datasheet, not from the export. The cross-reference tool shows how each Walsin candidate differs from your original, field by field.
What does Venatech hold in Hong Kong in soft termination MLCC?
30 lines. Of the 1,125 distinct part numbers on our stock list as at 23 September 2026, 30 are Walsin SH soft termination MLCC, including SH18B104K500 (100 nF, 0603, 50 V), SH21B474K250 (470 nF, 0805, 25 V) and SH21B103K201 (10 nF, 0805, 200 V).
For a Changi repair bench, that covers quick replacements while the exact 0805 value is quoted. For the parts in the table, request a quote and we source them through our authorised Walsin channel. The ready-stock list is a dated snapshot, never live-synced; we give no lead time or stock promise. We hold no aerospace certification and make no airworthiness claim; parts for installed aircraft equipment need your own quality system’s approval.
How Venatech helps: what should a Singapore MRO electronics team send us?
Your capacitor lines, any maker. Venatech is Walsin’s authorised distributor in Hong Kong, with a location in Singapore, and VenaMatch decodes 18 manufacturers’ part numbers and crosses 800,000+ parts to Walsin, with every field marked match or mismatch.
Paste up to 500 part numbers into the free cross-reference tool and use the soft termination filter, or upload a BOM and request a quote. Worked example from our own export: a 100 nF, 0805, X7R, 10 percent, 50 V or more soft termination brief returned 7 matches in 3 series, 2 of them AEC-Q200. Walsin is the line we are authorised for; Stackpole and Viking are lines we supply. Small lots and fast quotes from Hong Kong.
The short version
For aircraft MRO test and support electronics around Changi, Singapore, Walsin covers the soft termination capacitor position with 1,671 parts in three series, and 14 at 100 nF X7R in 0805 alone. Venatech, Walsin’s authorised distributor in Hong Kong, holds 30 soft termination lines on its 23 September 2026 snapshot and crosses the rest.
Send us the capacitor lines from your bench or ground equipment BOM, and we will return Walsin soft termination crosses with every difference stated. Which boards in your shop get flexed during repair?
Related reading
- Soft termination MLCC: SH, SG, ST and VT
- Flex cracking and why soft termination exists
- Walsin chip resistors for United States aerospace and defence
- Free cross-reference tool and ready-stock snapshot
Last reviewed 11 Nov 2026.
Sources
Fetched 11 November 2026.
- AviTrader, “ST Engineering opens Singapore aircraft maintenance hub”, 9 October 2026: https://avitrader.com/2026/10/09/st-engineering-opens-singapore-aircraft-maintenance-hub/
Frequently asked questions
What did ST Engineering open at Changi, Singapore?
AviTrader reported on 9 October 2026 that ST Engineering opened an 84,000 square metre aircraft maintenance facility at Changi with four wide-body bays, its fourth airframe MRO site in Singapore, expected to raise its wide-body capacity there by 40 percent. These are the publication’s figures.
How many Walsin soft termination MLCC are there?
We counted 1,671 distinct part numbers: 1,488 SH (silver-polymer), 65 SG (copper-polymer) and 118 ST, which the series name gives as automotive and qualified to AEC-Q200.
Which Walsin 100 nF 0805 soft termination capacitors are rated 50 V or more?
At 10 percent, seven match: ST21B104K500, ST21B104K101, SG21B104K500, SG21B104K101, SH21B104K500, SH21B104K101 and SH21B104K201. SH21B104J500 is a 5 percent option.
Does soft termination stop all MLCC cracks?
No. It reduces the risk of flex cracks from board bending, but thermal shock, poor soldering and handling damage can still crack a capacitor. Follow layout and assembly guidance as well.
Does Venatech stock soft termination MLCC in Hong Kong?
Yes. As at 23 September 2026, 30 of the 1,125 part numbers on our snapshot are Walsin SH soft termination MLCC, including SH18B104K500. For other lines, request a quote and we source them through our authorised Walsin channel.
Are Walsin MLCC approved for aircraft use?
We make no aerospace qualification or airworthiness claim. Walsin MLCC are commercial and automotive grade; parts for installed aircraft equipment need approval under your own quality system. Confirm with your compliance team.