How to Choose Samsung CL32B226KAJNNNE 22uF 25V X7R 1210 MLCC: Selection Guide for Decoupling and Bulk Capacitance
Complete selection guide for the Samsung CL32B226KAJNNNE 22uF 25V X7R 1210 MLCC: DC bias derating, temperature stability, ESR, and AEC-Q200 compliance for industrial decoupling applications.
Last updated: June 2026
Bottom Line: The Samsung CL32B226KAJNNNE is a 22 µF, 25 V, X7R, 1210 (3225M) MLCC engineered for bulk decoupling and rail stabilization in industrial, telecom, and automotive-adjacent power systems. When choosing this part—or any 22 µF 25 V X7R 1210—three factors dominate the decision: DC bias derating (X7R loses 40–60% capacitance at rated voltage), case size versus available board real estate, and compliance requirements such as RoHS and AEC-Q200. Smaller 0805 alternatives like the CL21B106KOQNNNE (10 µF 0805) suit 5–16 V signal-rail filtering; the 1210 format is the right choice when you need >10 µF at 12–25 V with a controlled temperature coefficient in one component. For fast, authenticated sourcing across 200+ verified distributors, search FindMyChip or submit a quote request.
What Is the Samsung CL32B226KAJNNNE?
The CL32B226KAJNNNE is a Samsung Electro-Mechanics multi-layer ceramic capacitor (MLCC) specified as follows:
- Capacitance: 22 µF (code: 226)
- Rated DC voltage: 25 V
- Dielectric: X7R (−55 °C to +125 °C, capacitance change ≤ ±15%)
- Package: 1210 (3.2 mm × 2.5 mm, SMD)
- Tolerance: ±10% (K code)
- Termination: Nickel-barrier / tin-plated (NNNNE = standard tin, Pb-free reflow compatible, peak 260 °C per IPC/JEDEC J-STD-020)
Samsung's CL series is one of the largest-volume MLCC product families in the world, shipping billions of units annually from Samsung Electro-Mechanics' Korean and Vietnamese fabs. The CL32B prefix designates 1210 X7R units, and this particular part targets bulk decoupling, power-rail bypass, and energy-storage roles where a single component must supply tens of microfarads reliably across a wide temperature range.
Because the 22 µF 25 V 1210 category is highly competitive, procurement teams often need to evaluate cross-compatible alternatives alongside the primary part. The candidates covered in this guide—including CL21A106KOQNNNE, CL21B106KOQNNNE, CL05B104KO5NNNC, and CL21B104KBCNNNC—span 0402 through 1210 and cover the full decoupling hierarchy from high-frequency bypass to bulk storage.
Key Selection Parameter 1: DC Bias Derating
X7R dielectrics suffer significant capacitance loss under applied DC voltage—a property called the voltage coefficient of capacitance. For a 22 µF 25 V X7R 1210 such as the CL32B226KAJNNNE, Samsung's published DC bias curves show:
| Applied Voltage | Approximate Effective Capacitance |
|---|---|
| 0 V | ~22 µF (nominal) |
| 5 V | ~20–21 µF |
| 12 V | ~15–18 µF |
| 20 V | ~10–13 µF |
| 25 V (rated) | ~8–11 µF |
This derating is intrinsic to the barium titanate dielectric and cannot be eliminated by external circuit design. JEDEC Standard EIA-198 formalizes how to measure and report it.
Selection guidance: Size your bulk capacitance requirement at 2× to 2.5× the minimum effective value needed. If your 12 V rail requires 10 µF effective for transient response, a single CL32B226KAJNNNE (delivering ~15–18 µF effective at 12 V) provides comfortable margin. If the rail is 24 V, you are operating near 96% of the rated voltage; switch to a 35 V or 50 V rated 1210 alternative instead. The CL21B106KOQNNNE (10 µF 16 V 0805) is the right secondary option when you can keep the supply below 10 V.
Key Selection Parameter 2: Temperature Stability (X7R vs X5R)
X7R is mandatory for industrial and automotive-adjacent applications requiring reliable capacitance from −55 °C to +125 °C. The "R" class in EIA dielectric codes guarantees ΔC/C ≤ ±15% over the rated temperature range. In contrast, X5R is limited to +85 °C maximum and is only appropriate for consumer electronics operating in ambient-temperature environments.
The CL32B226KAJNNNE's X7R dielectric makes it suitable for:
- Industrial motor drive and PLC bulk decoupling (operating temperatures up to +85 °C ambient, +105–125 °C junction)
- Telecom infrastructure power supplies and server PSUs (elevated chassis temperatures)
- Automotive-adjacent designs such as EV on-board chargers and ADAS ECUs (pre-qualified dielectric type)
When board space is the constraint and the operating temperature stays below 85 °C, the smaller CL21A106KOQNNNE (10 µF 0805 X5R 16 V) is a viable lower-cost option for consumer 5 V rails. However, any design targeting AEC-Q200 or extended temperature operation must use X7R or better (C0G/NP0 for precision applications).
Key Selection Parameter 3: Case Size and Board Space
The 1210 package (3225M metric) is the largest standard MLCC size in mass production and is optimized for maximum capacitance per voltage class. It requires a pad landing of approximately 3.4 mm × 2.7 mm plus courtyard clearance, and is placed via standard 8 mm carrier tape in automated pick-and-place equipment.
Use the 1210 package when:
- You need >10 µF at voltages above 16 V in a single footprint
- Your PCB has a dedicated power plane area with room for 1210 pads (e.g., near a buck converter output inductor)
- Automated assembly equipment in your CM supports 1210 tape (virtually universal)
For tighter layouts, consider descending to 0805 or 0402:
- CL21B106KOQNNNE (10 µF 0805 16 V X7R): half the footprint area, suitable for 5–12 V rails
- CL05B104KO5NNNC (100 nF 0402 16 V X7R): minimal footprint, best for IC-pin high-frequency bypass
- CL21B104KBCNNNC (100 nF 0805 50 V X7R): useful for 24–48 V system bypass
Design placement rule: Locate 1210 MLCCs within 5 mm of the power pin they decouple. Their parasitic ESL (~1–2 nH) is higher than 0402 parts, so longer traces reduce high-frequency effectiveness.
Key Selection Parameter 4: Rated Voltage Margin
Industry best practice for ceramic capacitors in DC applications is a minimum 2:1 voltage derating—operate at no more than 50% of rated voltage when capacitance stability is critical. For the CL32B226KAJNNNE (25 V rated), ideal operation is on 12 V rails and below.
| Rail Voltage | % of Rated Voltage | Derating Assessment |
|---|---|---|
| 3.3 V | 13% | Excellent; near-nominal capacitance |
| 5 V | 20% | Excellent |
| 12 V | 48% | Good; ~15–18 µF effective |
| 19 V | 76% | Marginal; upgrade to 35 V rated |
| 24 V | 96% | Out of spec for robust design |
For 24 V or 48 V power rails, use a CL32B MLCC rated at 35 V or 50 V. Consult FindMyChip's search to filter by voltage rating within the CL32B family.
Key Selection Parameter 5: ESR, ESL, and High-Frequency Performance
For switching converter applications, the Equivalent Series Resistance (ESR) of the output bulk capacitor directly sets the voltage ripple at the switching frequency. X7R 1210 MLCCs typically show:
- ESR at 100 kHz: 5–30 mΩ (significantly lower than aluminum electrolytics at 50–500 mΩ)
- ESL: ~1–2 nH (higher than 0402/0603, but acceptable for switching frequencies below 5 MHz)
- Self-resonant frequency (SRF): ~1–5 MHz (depending on internal layer count)
The CL32B226KAJNNNE is well suited for buck and boost converter output filtering at switching frequencies of 100 kHz to 2 MHz. Above the SRF the part becomes inductive; pair it with a 100 nF 0402 X7R (CL05B104KO5NNNC, SRF ~100–300 MHz) on the same net to cover high-frequency bypass. This two-tier decoupling hierarchy—22 µF 1210 for bulk, 100 nF 0402 for HF—is the standard approach recommended in TI, Infineon, and Analog Devices power converter application notes.
Key Selection Parameter 6: RoHS and AEC-Q200 Compliance
The standard CL32B226KAJNNNE ships in a RoHS 3 (EU Directive 2011/65/EU + 2015/863) and China RoHS compliant configuration. The "NNE" suffix in Samsung's part numbering specifies standard Ni-barrier, tin-plated (Pb-free) terminations compatible with lead-free wave and reflow soldering.
For automotive applications, Samsung offers AEC-Q200 Rev D certified variants within the CL32B family. Key compliance checkpoints:
- AEC-Q200 lot qualification: Confirm Certificate of Conformance (C of C) and test report number on purchase order
- Date code traceability: Automotive applications typically require lot-level date code and country of origin
- Moisture Sensitivity Level: Standard MLCC is MSL 1 (unlimited floor life at ≤30 °C/85% RH)
FindMyChip's 5-point authentication protocol verifies origin, date code, lot traceability, physical marking, and C of C documentation. Submit a quote request with automotive-grade or AEC-Q200 requirements to trigger this verification workflow.
Recommended Products Comparison Table
| Product | Capacitance | Voltage | Dielectric | Package | Best For |
|---|---|---|---|---|---|
| CL32B226KAJNNNE | 22 µF | 25 V | X7R | 1210 | Bulk decoupling, 12–24 V industrial rails |
| CL21B106KOQNNNE | 10 µF | 16 V | X7R | 0805 | 5–12 V signal rail filtering, space-constrained |
| CL21A106KOQNNNE | 10 µF | 16 V | X5R | 0805 | Consumer 3.3–5 V rails, ≤85 °C ambient |
| CL05B104KO5NNNC | 100 nF | 16 V | X7R | 0402 | High-frequency bypass, IC VCC pin decoupling |
| CL21B104KBCNNNC | 100 nF | 50 V | X7R | 0805 | High-voltage (24–48 V) bypass decoupling |
Selection Decision Flowchart
Use this step-by-step decision tree to identify the right Samsung CL-series MLCC:
Step 1 — What is your supply rail voltage?
- ≤5 V: Consider 0805 or 0402 X5R or X7R (CL21A106KOQNNNE or CL05B104KO5NNNC)
- 5 V to 16 V: CL21B106KOQNNNE (10 µF 0805 16 V X7R) or CL32B226KAJNNNE if >10 µF needed
- 16 V to 25 V: CL32B226KAJNNNE with strict 2:1 derating discipline (prefer ≤12 V operating)
25 V: CL32B226KAJNNNE is out of spec; source a 35 V or 50 V rated 1210 variant
Step 2 — What is your maximum operating temperature?
85 °C (industrial, automotive): X7R required → CL32B226KAJNNNE, CL21B106KOQNNNE, CL05B104KO5NNNC, CL21B104KBCNNNC
- ≤85 °C (consumer, IoT): X5R acceptable → CL21A106KOQNNNE or smaller 0402 variants
Step 3 — How much effective capacitance is required?
10 µF effective at 12 V: CL32B226KAJNNNE (delivers ~15–18 µF effective at 12 V)
- 5–10 µF effective: CL21B106KOQNNNE (delivers ~7–9 µF effective at 12 V)
- <1 µF (HF bypass only): CL05B104KO5NNNC (100 nF 0402, minimal DC bias effect)
Step 4 — Is board space limited?
- 1210 fits: Use CL32B226KAJNNNE for maximum bulk capacitance
- 1210 too large: Two CL21B106KOQNNNE in parallel (~20 µF total, 0805 footprints)
Step 5 — Is AEC-Q200 or automotive certification required?
- Yes: Source AEC-Q200 qualified lot; verify C of C via FindMyChip quote workflow
- No (commercial): Standard CL32B226KAJNNNE lot is sufficient with RoHS compliance
FAQ
Q: What is the effective capacitance of the CL32B226KAJNNNE at 12 V?
At 12 V DC (48% of the 25 V rated voltage), X7R DC bias derating reduces the CL32B226KAJNNNE's capacitance to approximately 15–18 µF—roughly 70–80% of its nominal 22 µF. This is standard X7R behavior documented in Samsung's voltage coefficient curves and formalized in JEDEC EIA-198. Always use the DC-biased effective capacitance value, not the nominal datasheet figure, when sizing bulk decoupling for power rails.
Q: Can the CL32B226KAJNNNE replace a traditional aluminum electrolytic bulk capacitor?
In many 12 V applications, yes. The CL32B226KAJNNNE provides lower ESR (5–30 mΩ) compared with standard aluminum electrolytics (50–500 mΩ), eliminates the liquid electrolyte failure mode, and offers a longer operational lifetime at elevated temperatures. For a 12 V rail requiring 10–30 µF effective, one to two CL32B226KAJNNNE in parallel typically replaces a single 47–100 µF electrolytic. Above 50 µF, stacked MLCC arrays or polymer aluminum capacitors may be more economical depending on BOM cost targets.
Q: Is the CL32B226KAJNNNE AEC-Q200 qualified?
The standard commercial CL32B226KAJNNNE is RoHS compliant but automotive-grade AEC-Q200 qualification must be verified at the lot level with Samsung or your distributor. Samsung does produce AEC-Q200 qualified lots within the CL32B X7R 1210 family. When submitting a quote request on FindMyChip, specify AEC-Q200 compliance and your required date code range, and FindMyChip's verification team will confirm qualification documentation from its 200+ vetted distributors.
Q: What is the self-resonant frequency of the CL32B226KAJNNNE?
For a 22 µF 1210 MLCC with ESL of ~1–2 nH, the self-resonant frequency (SRF) is typically 1–5 MHz. Below SRF the part is capacitive and provides effective bypass; above SRF it is inductive. For decoupling above 10 MHz, place a 100 nF 0402 X7R (CL05B104KO5NNNC, SRF ~100–300 MHz) in parallel. This two-capacitor hierarchy covers both low-frequency bulk storage (22 µF 1210) and high-frequency bypass (100 nF 0402) in one compact layout.
Q: How does the CL32B226KAJNNNE compare to the CL21B106KOQNNNE?
The key differences are voltage rating, capacitance, and package size. The CL32B226KAJNNNE (22 µF, 25 V, 1210) is designed for higher-voltage rails and larger bulk capacitance requirements; the CL21B106KOQNNNE (10 µF, 16 V, 0805) is the smaller, lower-cost option for 5–12 V signal rails where board area is at a premium. Both use X7R dielectric for the same −55 °C to +125 °C temperature range and are manufactured by Samsung Electro-Mechanics. The 1210 format of the CL32B226KAJNNNE provides 2.2× more capacitance at 56% higher voltage rating compared to the 0805 variant.
Conclusion and Where to Source
The Samsung CL32B226KAJNNNE is the natural choice for bulk decoupling and rail stabilization on 12–25 V industrial and power-electronics PCBs when you need 22 µF in a single X7R 1210 footprint. Its low ESR, controlled X7R tempco, and wide voltage headroom make it a reliable workhorse alongside smaller bypass capacitors (CL05B104KO5NNNC for HF, CL21B106KOQNNNE for mid-rail) in a complete decoupling strategy.
Key decision recap:
- 12 V rail, need >10 µF effective, X7R: CL32B226KAJNNNE is the primary recommendation
- 5–12 V rail, space-constrained, X7R: CL21B106KOQNNNE (10 µF 0805)
- Consumer 3.3 V, cost-sensitive, ≤85 °C: CL21A106KOQNNNE (10 µF 0805 X5R)
- HF bypass, IC VCC pin: CL05B104KO5NNNC (100 nF 0402 X7R)
To check real-time stock, pricing, and lead times across 200+ verified global distributors, search for CL32B226KAJNNNE on FindMyChip. For volume orders or AEC-Q200 certified lots with full C of C documentation, submit a quote request and receive a response within 24 hours from FindMyChip's Shenzhen-based sourcing team.