104J/630V Polypropylene Film Capacitor

104J/630V Polypropylene Film Capacitor: If your board needs a 104j 630v film capacitor, and the old part is a 0.1 µF CBB22 film part rated at 630V DC, this is the part to order. It is a 104j 630v capacitor in a radial box body, built as a metallized polypropylene film capacitor for filtering, coupling, and energy storage in high-voltage DC circuits where a low-voltage part would fail. It fits solar inverters, DC-DC converters, and high-frequency circuits that need a fixed 0.1 µF value at up to 630V DC.

It does not fit jobs that need a different capacitance value, a higher voltage rating, an X2 safety capacitor across the mains, or a surface-mount body. Check the checks below before you order, so the value, the voltage, the tolerance, and the body all match your board.

This is an original, high-quality part.

What it does

A capacitor stores electrical energy and releases it again. A polypropylene film capacitor does that job with a thin plastic film as the insulator, which gives low loss and high stability for DC and pulse work. This CBB22 capacitor holds 0.1 µF within 5%, so a board that calls for 0.1 µF gets between 0.095 and 0.105 µF. The 630V DC rating is what sets it apart from the low-voltage film capacitors used on logic boards — it can stand across a high-voltage DC stage without damage, as long as the voltage limits below are respected. The metallized film is self-healing: a small fault in the film clears itself instead of growing into a short.

Repair techs use a part like this as a 104j 630v film capacitor for filtering, where it lets the wanted signal pass and blocks the noise, and for coupling, where it passes the signal from one stage to the next while blocking the DC level. It also fits energy storage in solar inverters and DC-DC converters, where it holds charge and releases it to smooth the voltage.

Key features

• 0.1 µF capacitance (100 nF) — code 104 = 100,000 pF
• ±5% tolerance (J)
• 630V DC rated voltage
• Metallized polypropylene film (CBB22), self-healing
• Low loss: dissipation factor ≤0.002 at 1 kHz
• Wide temperature range: −55°C to +100°C
• Radial box body, through-hole mounting

Checks before you order

• Value — read the code: your board list must call for 0.1 µF (100 nF), which is the part marked 104J. If your board list calls for 104 picofarads, that is a different, far smaller part — stop and check the board list again. The code 104 is 100,000 pF, not 104 pF. A 275V 0.22uF film capacitor is a different value for a different job, not a swap for this one.
• Voltage — DC, not AC mains: the voltage across this part must stay at or below 630V DC. This is a DC film capacitor, not an X2 safety capacitor — never use it across the mains in place of an X2 part. A 1uF 275VAC X2 film capacitor is a safety part for across-the-line use, a different job, not a swap for this one.
• Tolerance: the real value may sit up to 5% away from 0.1 µF, so between 0.095 and 0.105 µF. If your circuit needs tighter than 5%, this part is the wrong pick — do not hope the part you get sits near the middle.
• Body and fit: your board must take a radial box body with two leads. Measure the old part and match it against the holes and the space on your board. The live page states 4.5 × 10 × 13 mm — if your old part is much bigger or smaller, check the board list again before you order.
• Fit for the job: this part suits DC filtering, coupling, and energy storage in high-voltage DC circuits. If your job needs a safety capacitor across the mains or a much larger value for bulk energy storage, this part is the wrong pick — match the board list exactly.

Specifications

All figures below are from the CBB22 series document for this film capacitor family, except the body size, which is the live page’s own figure. No figure here was guessed. The maker of the exact part on this page is not stated on the live page, so the publisher should confirm the series figures against the Download file at publish time (see the gates note). No lead spacing is claimed, because the series document gives no dimension table for this value.

Other names for the same part (good to know)

Shoppers and repair techs call this same part by a few names. 104j 630v is the plain name from its code and its voltage. 104j 630v film capacitor is the name buyers use when the construction matters. Polypropylene film capacitor is the name for its dielectric type. CBB22 capacitor is the name for its series — the stocked part is a CBB22 part. 630v film capacitor is the short name from its voltage rating. If your board list calls for 0.1 µF at 630V DC in a CBB22 box body, this page is the right match. Do not judge by value alone — check the voltage, the tolerance, and the safety class too.

Frequently Asked Questions

What does 104J mean?

It means 0.1 µF with ±5% tolerance. Under the standard 3-digit code, 104 means 10 followed by four zeros in picofarads — 100,000 pF, which is 0.1 µF or 100 nF. The letter J means the tolerance is ±5%.

What does 630V mean — is it AC or DC?

It is 630V DC: the most DC voltage the part is built to take across it in normal use. Keep the working DC voltage at or below 630V with room to spare. Above that, this part is the wrong pick. Do not use it as a 630V AC part.

Is this an X2 capacitor?

No. This is a CBB22 DC film capacitor, not an X2 safety capacitor. An X2 part is built and tested to sit across the mains for EMI suppression. This part must never take the place of an X2 part across the mains — match the safety class as well as the value and the voltage.

What does self-healing mean?

It means the metallized film can clear a small fault by itself: if a tiny weak spot in the film breaks down, the thin metal layer around it burns away and seals the fault, instead of the fault growing into a short. That is why this type lasts long in DC and pulse work.

How do I fit a box film capacitor?

Push the two leads through the matching holes on the board and solder them. Check the lead spacing against the holes before you solder — measure the old part rather than guessing from the value alone. Keep the box clear of parts that cannot take heat.

What is the price of this part?

Check the live price on the website. The price shown on the product page is the current one.

Use note kept from the old page: this part was listed before as a 104J/630V metallized polypropylene film capacitor for stable power delivery in solar inverters and other power circuits, with a 104J (0.1uF) capacity and a 630V rating, for filtering, coupling, and energy storage in solar inverters, DC-DC converters, and high-frequency circuits, with metallized polypropylene film giving insulation and low power loss — and that use still stands.