Capacitor Kits

An SMD capacitor kit puts every value you are likely to reach for on the bench, sorted and labelled. Use one when you are prototyping, tuning a filter or repairing a board and the part you need changes several times before the design settles. These are surface-mount ceramic capacitors — MLCCs. If you need electrolytics, tantalums or film capacitors, this is not the kit for that.

ATI builds 12 kits in 48 configurations, from $99. Three series — Classic, Upgraded Classic and RF — in 0402, 0603, 0805 and 1206, holding 35 to 96 values that span 0.5 pF to 220 µF. Every kit arrives in a snap-lock case of 128 individually lidded bins, with the capacitance, dielectric material, voltage rating and tolerance printed on each lid.

Showing all 12 resultsSorted by price: low to high

SKU	Package Size	Series	Distinct Values	Price	Stock
CRF04-42V	0402	RF	42 Values	Price range: $99.00 through $229.00	In Stock
CRF06-42V	0603	RF	42 Values	Price range: $109.00 through $349.00	In Stock
CRF08-42V	0805	RF	42 Values	Price range: $109.00 through $349.00	In Stock
C04	0402	Classic	70 Values	Price range: $129.00 through $299.00	In Stock
CRF12-35V	1206	RF	35 Values	Price range: $129.00 through $519.00	In Stock
C06	0603	Classic	79 Values	Price range: $159.00 through $399.00	In Stock
C08	0805	Classic	83 Values	Price range: $179.00 through $599.00	In Stock
C12	1206	Classic	77 Values	Price range: $179.00 through $789.00	In Stock
C04B	0402	Upgraded Classic	89 Values	Price range: $209.00 through $539.00	In Stock
C06B	0603	Upgraded Classic	96 Values	Price range: $229.00 through $1,059.00	In Stock
C08B	0805	Upgraded Classic	91 Values	Price range: $239.00 through $1,419.00	In Stock
C12B	1206	Upgraded Classic	81 Values	Price range: $359.00 through $3,319.00	In Stock

Our Delivery Promise

Fast, flexible fulfillment from San Jose, California, USA — shipped worldwide.

Fast in-stock shipping — In-stock orders ship within 1–2 business days after confirmation and quality check.
Made-to-order models — Some models are produced to order. Contact sales@analogti.com for the current lead time.
Worldwide shipping — Shipped from San Jose to customers worldwide.
Flexible carrier options — UPS, FedEx, DHL, USPS, freight forwarders, or your preferred logistics partners.
Clear shipment visibility — Tracking provided after dispatch to support your receiving and production planning.

Which series do I need?

Three series. Classic and Upgraded both start at 0.5 pF and separate at the top end; RF covers only small values but holds them to tighter tolerances.

Series	Values	Capacitance range	Packages	Price	Choose this if…
Classic C04, C06, C08, C12	70 – 83	0.5 pF (1.5 pF in 1206) to 1–47 µF, by package	0402, 0603, 0805, 1206	from $129	The default bench kit. Decoupling, filtering, timing and general design work, where the largest value you fit is a few microfarads.
Upgraded Classic C04B, C06B, C08B, C12B	81 – 96	0.5 pF (1.5 pF in 1206) to 22–220 µF, by package	0402, 0603, 0805, 1206	from $209	You need bulk capacitance in ceramic — power rails, point-of-load decoupling, supply hold-up — and do not want to switch to a different kit to find it.
RF CRF04, CRF06, CRF08, CRF12	35 – 42	0.5 pF (1.5 pF in 1206) – 1.0 nF	0402, 0603, 0805, 1206	from $99	You tune matching networks, filters and oscillators, where the difference between 2.2 pF and 2.4 pF changes the answer and a ±10 % part is useless.

Reading the part numbers, and where the ranges differ

All the capacitors in these kits are made by TDK, from its C series of commercial-grade multilayer ceramic chip capacitors (MLCC). For capacitance range by temperature characteristic, rated voltage, tolerance and dimensions of the TDK parts, see the TDK commercial-grade MLCC datasheet (PDF).
C06-200 reads as: C for capacitor, 06 for the 0603 package (04 = 0402, 08 = 0805, 12 = 1206), and 200 for the number of pieces supplied of each value. Upgraded Classic kits carry a B at the end — C06-200B. RF kits are prefixed CRF.
In an RF part number, V stands for Values, not Volts. CRF04-42V is the 0402 RF kit holding 42 different values, and CRF12-35V holds 35. It is not a 42-volt or 35-volt rating. The actual voltage rating is printed on the lid of each bin.
The top of the range depends on the package, because a larger case can hold more capacitance. In the Classic series the ceiling runs 1 µF in 0402, 4.7 µF in 0603, 22 µF in 0805 and 47 µF in 1206. In the Upgraded series the same packages reach 22 µF, 47 µF, 100 µF and 220 µF. The bottom of the range is 0.5 pF everywhere except 1206, which starts at 1.5 pF.
Value counts differ by package too. Classic holds 70 values in 0402, 79 in 0603, 83 in 0805 and 77 in 1206. Upgraded holds 89, 96, 91 and 81. The RF series holds 42 values in 0402, 0603 and 0805, and 35 in 1206.
Small values are specified in picofarads, not percent. Below roughly 10 pF a percentage tolerance stops being meaningful, so those values are held to ±0.25 pF or ±0.5 pF instead. Larger values use ±5 % through ±20 % depending on the dielectric.
Every lid carries four things: capacitance, dielectric material, voltage rating and tolerance. With capacitors the capacitance alone does not identify the part — the same 100 nF in two different dielectrics behaves differently in a circuit.

Need a value list, a package or a quantity split we do not list? Tell us what you need in the box and we will let you know whether we can put it together.

Three things to settle before you order

Capacitors take a little more thought than resistors, because capacitance is not the only thing that defines the part.

1. How far up you need to go

This is the choice between Classic and Upgraded, and it is worth being honest about. If your largest ceramic is a 1 µF or 4.7 µF decoupling part, Classic covers you and Upgraded is money you do not need to spend. If you regularly fit 22 µF or 47 µF on power rails, Upgraded saves you a separate order every time. Bulk ceramics are a large part of what makes the Upgraded kits cost more — a 220 µF 1206 part is a different class of component from a 10 pF one, and the price of the kit reflects that.

2. Dielectric matters as much as value

Two capacitors marked 100 nF can behave very differently. Class 1 dielectrics such as C0G and NP0 are stable over temperature and voltage but cannot hold much capacitance in a small case. Class 2 dielectrics such as X7R and X5R fit far more capacitance in the same footprint, but their value moves with temperature and drops as you apply DC voltage across them. That is why every lid in these kits shows the material as well as the number, and why the RF kits exist as a separate series — small, stable, tightly specified parts for circuits that will not tolerate drift.

3. Check the voltage rating on the lid

A capacitor kit is not a single-voltage product. Small values in ceramic tend to carry generous ratings, while bulk values in the same kit are usually rated much lower, because getting 100 µF into an 0805 case means thin dielectric layers. The rating is printed on each lid rather than summarised for the kit as a whole. Read it before you fit a part to a rail, and remember that a Class 2 part run near its rated voltage has already lost a good part of its nominal capacitance.

Why buy capacitor kits from ATI

Lids printed with all four parameters — Capacitance, dielectric, voltage rating and tolerance, printed on every lid. Most kits show the value alone, which tells you the least useful part of what you need to know when you are choosing between two bins that both say 100 nF.
A separate RF series, not a token handful of small values — 35 to 42 values below 1 nF at ±0.25 pF and ±0.5 pF, in four packages. General kits usually carry a few picofarad values as an afterthought and leave you short exactly where tuning needs the most resolution.
Bulk ceramics in the same box — The Upgraded series runs to 220 µF, so power-rail parts live in the kit rather than in a separate bag on the shelf.
Each value in its own lidded bin — 128 bins, each opening on its own with its value printed on the lid, so finding a value is reading a lid rather than counting positions, and taking a part out leaves every other value closed. Over the years a kit is in service, that is what decides whether the lids still match what is in the bins.
Our own kit, built since 1997 — We build these ourselves rather than reselling someone else's kit, so questions about what is in the box reach the people who packed it. Kits ship from San Jose, California.
The rest of the bench too — Resistor and inductor kits use the same cases and the same labelling, so a bench outfitted from ATI stays consistent.

Who buys these

Design and prototyping benches

The core case. Decoupling, filtering and timing values change repeatedly while a board is being brought up, and a kit removes the wait between iterations.

RF and analog tuning

Matching networks, filters and oscillators, where you fit a part, measure, and fit the next one up. This is what the RF series is for.

Power supply development

Input and output filtering, loop compensation and rail decoupling — the work that keeps reaching for larger ceramics and drives people to the Upgraded series.

Repair and rework

Board-level repair, where an unmarked ceramic has failed and you need a replacement matched on value, dielectric and voltage rather than value alone.

Small-batch production

Low-volume and NPI builds where reeling every value is not economic. The 200-piece and 500-piece options exist for this.

Universities and training labs

Shared benches where parts are handled by many people. Labelled, lidded bins are what keeps a kit usable past its first semester.

Frequently asked questions

Classic or Upgraded — what do I actually gain?

Reach at the top end, and a few more values. Both series start at 0.5 pF and cover the same small and mid-range parts. The difference is the ceiling: Classic tops out between 1 µF and 47 µF depending on package, while Upgraded reaches 22 µF to 220 µF. If you fit bulk ceramics on power rails regularly, Upgraded keeps that work inside the kit. If your largest ceramic is a decoupling capacitor of a microfarad or two, Classic is the right buy and the extra cost of Upgraded goes on parts you will not use.

What does the V mean in CRF04-42V? Is that a voltage rating?

No. In our RF kit part numbers, V stands for Values — CRF04-42V is the 0402 RF kit containing 42 different capacitance values, and CRF12-35V contains 35. The actual voltage rating varies from bin to bin and is printed on the lid of each one. We know the notation reads like a voltage in this category; check the lid, not the part number on the box.

Why is my capacitance lower than the marked value in circuit?

If the part is a Class 2 ceramic — X7R, X5R and similar — this is expected behaviour, not a faulty part. Their capacitance falls as DC voltage is applied across them, and the effect is large: a small-case part run near its rated voltage can lose a substantial fraction of its nominal value. It also drifts with temperature and ages slowly. Where the value has to stay put, use a Class 1 part such as C0G or NP0, or fit a larger case size or a higher voltage rating so the part operates further from its limits.

Why are the smallest values specified in picofarads rather than percent?

Because a percentage of a very small number stops being a useful specification. At 1 pF, a ±5 % tolerance is ±0.05 pF — far below what stray capacitance in your layout contributes anyway, and below what can be economically sorted. Below roughly 10 pF the industry specifies an absolute tolerance instead, which is why the small values in these kits are held to ±0.25 pF or ±0.5 pF.

Can I use the general kits for RF work instead of the RF series?

For rough work, sometimes. The Classic and Upgraded kits do carry small values, and the tolerance on those is the same absolute picofarad specification. What the RF series adds is resolution: 35 to 42 values concentrated below 1 nF, so when a match needs 2.7 pF rather than 2.2 pF the part is in the box. In a general kit the small values are spread thinly because most of its bins are spent on the larger capacitances a general bench needs.

Are these the same capacitors I would buy on a reel?

They are standard surface-mount ceramic capacitors, supplied loose in bins rather than on tape. That is the trade a kit makes: you get one of every value now instead of three thousand of one value in a week. For production, buy reels of the values your design settled on. For the stage before that, a kit is what keeps the work moving.

How should I handle and store them once the kit is open?

Ceramic capacitors are more fragile than they look — the failure people actually encounter is a cracked part from board flex or from being pressed with hard tweezers, and a cracked MLCC can fail as a short rather than an open. Handle them with fine tweezers rather than fingers, keep the bins closed when you are not in them, and keep the kit somewhere dry. Parts that have been loose on a bench for a while are worth checking before they go into anything that matters.