ACM21-900M-T

Common Mode Choke, ACM-21 Series, 90 ohm, 400 mA, 2 mm x 1.2 mm x 1.2mm

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: ABRACON
Product type: SMD Common Mode Chokes / Filters
SVHC: No SVHC (04-Feb-2026)
Impedance: 90ohm
Inductance: -
Product Range: ACM-21 Series
Product Width: 1.2mm
Qualification: -
Product Height: 1.2mm
Product Length: 2mm
DC Current Rating: 400mA
DC Resistance Max: 0.3ohm
Inductor Case / Package: 0805 [2012 Metric]
Operating Temperature Max: 85°C
Operating Temperature Min: -40°C

Delivery and price
Units per pack	2000
Price	0.133 €
Current stock	500+
Lead time	30 days

Datasheet

2.0 x 1.2 x 1.2mm | | | | | | | | | | | | | | | 

## **Chip Wire Wound Common Mode Choke** ACM-21 —_ 

## **RoHS Pb** © **Compliant** 

## __— **APPLICATIONS:** 

- Small size with ferrite base 

- Two line type wire wound 

- High common-mode impedance at noise band and low differential-mode impedance at signal band 

   - EMI and Noise Suppression 

   - USB Line Filter for Personal Computers and Peripheral 

   - IEEE 1394 Line for Personal Computers, DVC, STB 

   - Low-Voltage Differential Signal (LVDS) for LCD panels 

- Suitable for high-speed signal. 

|**Part Number**|**Z**|**DCR**|**IDC**|**Rated**<br>**Voltage**|**Withstanding**<br>**Voltage**|**Insulation**<br>**Resistance**|
|---|---|---|---|---|---|---|
|**Units**<br>~~eee~~|**Ω ± 20%**<br>|<br>~~eee~~|**Ω(max.)**<br>~~eee~~|**mA**<br>~~eee~~|**Vdc**<br>|<br>~~eee~~|**Vdc**<br>~~eee~~|**MΩ(min.)**<br>~~eee~~|
|ACM-21-300<br>~~eee~~<br>~~a~~|30<br>|<br>~~eee~~<br>~~Rs~~|0.20<br>~~eee~~|450<br>~~eee~~|50<br>|<br>~~eee~~|125<br>~~eee~~|10<br>~~eee~~|
|ACM-21-670<br>~~eee~~<br>~~a~~|67<br>~~eee~~<br>~~Rs~~|0.25<br>~~eee~~|400<br>~~eee~~|50<br>~~eee~~|125<br>~~eee~~|10<br>~~eee~~|
|ACM-21-900<br>~~eee~~<br>~~a~~|90<br>~~eee~~<br>~~Rs~~|0.30<br>~~eee~~|400<br>~~eee~~|50<br>~~eee~~|125<br>~~eee~~|10<br>~~eee~~|
|ACM-21-121<br>~~a~~<br>~~SEE~~|120<br>~~Rs~~<br>~~SEE~~|0.30<br>~~SEE~~|370<br>~~SEE~~|50<br>~~SEE~~|125<br>~~SEE~~|10<br>~~SEE~~|
|ACM-21-161<br>~~SEE~~|160<br>~~SEE~~|0.35<br>~~SEE~~|330<br>~~SEE~~|50<br>~~SEE~~|125<br>~~SEE~~|10<br>~~SEE~~|
|ACM-21-181<br>~~pf~~|180<br>~~pf~~|0.35|330<br>~~a~~|50|125|10|
|ACM-21-201<br>~~eG~~<br>~~es~~|200<br>~~eG~~<br>~~es~~|0.35<br>~~eG~~<br>~~ee~~|330<br>~~eG~~<br>~~ee~~|50<br>~~eG~~|125<br>~~eG~~<br>~~eee~~|10<br>~~eG~~<br>~~eee~~|
|ACM-21-221<br>~~es~~<br>~~ee~~|220<br>~~es~~|0.35<br>~~ee~~|330<br>~~ee~~|50|125<br>~~eee~~|10<br>~~eee~~|
|ACM-21-261<br>~~es~~<br>~~ee~~|260<br>~~es~~|0.40<br>~~ee~~|300<br>~~ee~~|50|125<br>~~eee~~|10<br>~~eee~~|
|ACM-21-361<br>~~es~~<br>~~ee~~<br>~~es~~|360<br>~~es ~~|0.40<br> ~~ee ~~|280<br> ~~ee~~<br>~~a~~|50|125<br>~~eee~~|10<br>~~eee~~|
|ACM-21-371<br>~~ee~~<br>~~es~~|370|0.40<br>~~ee~~|280<br>~~a~~<br>~~ee~~|50<br>~~ee~~|125<br>~~ee~~|10<br>~~ee~~|



## **Test Conditions** 

**Impedance:** LCR Meter HP 4291B, 100MHz 

**DCR:** Micro-Ohm meter (GOM-801G) 

**Withstand Voltage (VDC):** 125Vdc, 60 sec, 0.5mA **Rated Voltage (VDC):** 50Vdc, 1 – 5 sec **Insulation Resistance (I.R):** 1mA, 1 min **PART IDENTIFICATION:** —— SS ACM-21 -            M - 

**Impedance Code Packaging** Please refer to the Blank: bulk table above T: Tape and Reel (2k pcs/reel) 

Visit www.abracon.com for Terms & Conditions of Sale **Revised: 01.27.14** 30332 Esperanza, Rancho Santa Margarita, California 92688 tel 949-546-8000 | fax 949-546-8001 | www.abracon.com 

**ABRACON IS** ISO 9001 / QS 9000 ISO 9001:2008 **CERTIFIED** ey 27CORPORATION 

2.0 x 1.2 x 1.2mm **Compliant** | | | | | | | | | | | | | | | 

## **Chip Wire Wound Common Mode Choke** ACM-21 

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RoHS<br>Pb<br>**----- End of picture text -----**<br>


## **ELECTRICAL CHARACTERISTIC CURVE:** a:i 

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**----- Start of picture text -----**<br>
ACM-21-161<br>[|<br>**----- End of picture text -----**<br>


Visit www.abracon.com for Terms & Conditions of Sale **Revised: 01.27.14** 30332 Esperanza, Rancho Santa Margarita, California 92688 tel 949-546-8000 | fax 949-546-8001 | www.abracon.com 

**ABRACON IS** ISO 9001 / QS 9000 ISO 9001:2008 **CERTIFIED** 

**Chip Wire Wound Common Mode Choke** ACM-21 

**RoHS Pb** 2.0 x 1.2 x 1.2mm **Compliant** | | | | | | | | | | | | | | | 

## **ELECTRICAL CHARACTERISTIC CURVE:** > 

**==> picture [46 x 6] intentionally omitted <==**

**----- Start of picture text -----**<br>
ACM-21-201<br>**----- End of picture text -----**<br>


**==> picture [112 x 26] intentionally omitted <==**

**----- Start of picture text -----**<br>
ACM-21-261<br>fT<br>**----- End of picture text -----**<br>


**==> picture [177 x 30] intentionally omitted <==**

**----- Start of picture text -----**<br>
ACM-21-221<br>1000 __ |<br>**----- End of picture text -----**<br>


**==> picture [104 x 26] intentionally omitted <==**

**----- Start of picture text -----**<br>
ACM-21-361<br>:======——__———=====,<br>**----- End of picture text -----**<br>


**==> picture [46 x 6] intentionally omitted <==**

**----- Start of picture text -----**<br>
ACM-21-371<br>**----- End of picture text -----**<br>


Visit www.abracon.com for Terms & Conditions of Sale **Revised: 01.27.14** 30332 Esperanza, Rancho Santa Margarita, California 92688 tel 949-546-8000 | fax 949-546-8001 | www.abracon.com 

**ABRACON IS** ISO 9001 / QS 9000 ISO 9001:2008 **CERTIFIED** | y = NR 

ACM-21 

**RoHS** 2.0 x 1.2 x 1.2mm **Compliant** | | | | | | | | | | | | | | | 

## **Chip Wire Wound Common Mode Choke** 

## **Pb** 

## **OUTLINE DIMENSIONS:** aT 

**Recommended Land Pattern** 

|**A**|**B**||**C**|**E**|**F**|**G**|
|---|---|---|---|---|---|---|
|**2.0±0.2**|**1.2±0.2**||**1.2±0.2**|**0.45**|**1.2**|**0.4**|
||**Schematic**||**Schematic**|**Schematic**|**Schematic**||



|**H**|**I**|**J**|**K**|
|---|---|---|---|
|**0.8**|**0.4**|**0.4**|**0.90**|



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## **REFLOW PROFILE:** ———> ©) 

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**----- Start of picture text -----**<br>
220 _________ Heatup mate = sis ote<br>**----- End of picture text -----**<br>


Visit www.abracon.com for Terms & Conditions of Sale **Revised: 01.27.14** 30332 Esperanza, Rancho Santa Margarita, California 92688 tel 949-546-8000 | fax 949-546-8001 | www.abracon.com 

**ABRACON IS** ISO 9001 / QS 9000 ISO 9001:2008 **CERTIFIED** ee 

ACM-21 

**RoHS** 2.0 x 1.2 x 1.2mm **Compliant** | | | | | | | | | | | | | | | 

## **Chip Wire Wound Common Mode Choke** 

**==> picture [18 x 12] intentionally omitted <==**

**----- Start of picture text -----**<br>
Pb<br>**----- End of picture text -----**<br>


**==> picture [248 x 20] intentionally omitted <==**

**----- Start of picture text -----**<br>
TAPE & REEL: 2000pcs/reel<br>a<br>**----- End of picture text -----**<br>


|**A**|**B**|**W**|**E**|**F**|**P0**|**P1**|**P2**|**ΦD0**|**t**|
|---|---|---|---|---|---|---|---|---|---|
|1.40±0.10|2.55±0.05|8.0±0.20|1.75±0.10|3.5±0.10|4.00±0.10|4.00±0.10|2.00±0.10|1.50+0.10|1.35±0.10|



|**ΦA**|**ΦB**|**ΦC**|**W**|**T**||
|---|---|---|---|---|---|
|178±2.0|60±0.5|13±0.3|9+0.3|11.4±1.0||
||||||**Dimension: mm**|



**ATTENTION:** Abracon Corporation’s products are COTS – Commercial-Off-The-Shelf products; suitable for Commercial, Industrial and, where designated, Automotive Applications. Abracon’s products are not specifically designed for Military, Aviation, Aerospace, Life-dependant Medical applications or any application requiring high reliability where component failure could result in loss of life and/or property. For applications requiring high reliability and/or presenting an extreme operating environment, written consent and authorization from Abracon Corporation is required. Please contact Abracon Corporation for more information. 

Visit www.abracon.com for Terms & Conditions of Sale **Revised: 01.27.14** 30332 Esperanza, Rancho Santa Margarita, California 92688 tel 949-546-8000 | fax 949-546-8001 | www.abracon.com 

**ABRACON IS** ISO 9001 / QS 9000 ISO 9001:2008 **CERTIFIED**

Updated at June 5, 2026

Abracon is an industry-leading manufacturer of passive components, specializing in frequency control, timing devices, RF and antenna solutions, and inductor technology. Through a commitment to quality and technical innovation, the company enables advanced IoT, data communication, industrial, medical, and aerospace applications. Abracon also powers a portfolio of trusted industry brands, including Ecliptek, Fox, ILSI, and ProAnt, delivering comprehensive solutions for modern engineering challenges. Globally recognized for its world-class frequency control devices, Abracon offers a vast selection of quartz crystals and standard oscillators engineered to provide exceptional stability and precision for critical circuitry. The comprehensive timing range also encompasses advanced MEMS oscillators, temperature-compensated (TCXO) and voltage-controlled (VC-TCXO) variants, alongside highly reliable resonators. Beyond timing components, Abracon excels in power management and connectivity. The company's magnetic and RF offerings include a substantial array of high-efficiency power inductors, specialized toroidal coils, and charging coils. To support seamless wireless communication and maintain signal integrity, Abracon provides a robust selection of RF antennas, single-band chip antennas, and common mode chokes designed for effective EMC and RFI suppression.

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