Laird-Signal-Laird-Tech-CMA0805A361R-1A

Common Mode Choke for Automotive Signal Line  

CMA0805 Series  

FEATURES

AND APPLICATIONS  

Laird CMA0805 series automotive common mode chokes

improve performance and reliability

.  

A low profile and compact design benefits automotive electronics, industrial and telecom design.  

Products feature superior common mode noise suppression over broadband frequency and reduce  

customer total EMC cost. Chokes are designed in wire wound construction and perform in extended  

operating temperature range.  

FEATURES  

•

Magnetic wire-wound structure  

•

Superior common mode noise suppression over broadband frequency  

•

Low profile and extremely small size  

APPLICATIONS  

•

Automotive CAN-BUS Signal Lines  

•

Telecom and Industrial Singal Lines  

PART NUMBER EXPLANATION  

Product series  

code  

Dimension  

code  

Material  

code  

Impedance  

code  

Automotive  

code  

NOTES  

•

Reliability test referring to AEC-Q200 standard  

•

Operating Temperature range :  

CMA0805A Series -40°C to +125°C (Including self – temperature rise )  

•

Storage Condition (Component in its packaging) . Temperature : Less than 40

°

C .Humidity : 60% RH  

•

Storage Temp : -55

°

C to +85

°

C (On board )  

•

At Rated Current < 1A , Temperature Rise 20

°

C Max .  

•

For automotive application with PPAP requirement, a specific P/N suffix will be assigned  

to replace P/N suffix -1A, please contact your local Laird contacts for details  

ance Materials  

com  

Common Mode Choke CM Series  

Rev:A  

Rev  

A

Items  

Before  

After  

Owner  

Jon Liu  

Date  

2021.9.8  

─

─

─

Laird Performance Materials  

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Common Mode Choke CM Series  

Rev:A  

1.CMA0805 SERIES DIMENSIONS  

CMA0805 Series  

Recommended layout  

G1  

A

B

C

D1  

D2  

L

H

G2  

2.0±0.2  

1.2±0.2  

1.2±0.2  

0.55 Ref  

0.45Ref  

2.6 REF

 

1.25 REF

 

1.1 REF

 

0.45 REF  

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Common Mode Choke CM Series  

Rev:A  

2.SPECIFICATION  

Common Mode  

Impedance(ohm)  

100MHz/0.5V  

Insulation  

Test Voltage  

V/AC Max  

DC  

Resistance  

(ohm) Max  

Rated  

Current  

(mA)  

IR  

(Mohm)  

Min  

Rated Volt  

(Vdc)  

Part No.  

CMA0805A900R-1A  

CMA0805A121R-1A  

CMA0805A201R-1A  

CMA0805A361R-1A  

CMA0805A681R-1A  

90

±25%  

120±25%  

200±25%  

360±25%  

680±25%  

125  

125  

125  

125  

125  

0.19  

0.22  

0.25  

0.50  

1.30  

400  

370  

350  

220  

200  

50  

50  

50  

50  

50  

10  

10  

10  

10  

10  

3.EQUIVALENT CIRCUIT  

4.MATERIAL LIST  

(a) Upper Cover  

(b) Wire  

(c) Core  

(d) Terminal  

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Common Mode Choke CM Series  

Rev:A  

5. CHARACTERISTICS CURVES  

COMMON MODE IMPEDANCE  

2000  

1600  

1200  

800  

400  

0

CMA0805A681R-1A  

CMA0805A361R-1A  

CMA0805A201R-1A  

CMA0805A121R-1A  

CMA0805A900R-1A  

1

10  

100  

1000  

Frequency (MHz)  

DIFFERENTIAL MODE IMPEDANCE  

250  

200  

150  

100  

50  

CMA0805A681R-1A  

CMA0805A361R-1A  

CMA0805A201R-1A  

CMA0805A121R-1A  

CMA0805A900R-1A  

0

1

10  

100  

1000  

10000  

Frequency (MHz)  

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Common Mode Choke CM Series  

Rev:A  

6. SOLDERING  

Mildly activated rosin fluxes are preferred.  

Recommended temperature profiles for re – flow soldering in Figure 1 .  

Reworking with sldering iron  

Preheating  

150

°C 1 minute  

280

°

C max  

Tip temperature  

Soldering time  

3 seconds max  

30w max  

Soldering iron output  

End of soldering iron  

f 3mm max  

Reworking should be limited to only one time.  

Note : Do not directly touch the products with the tip of the soldering iron in order to prevent the crack on the ferrite  

material due to the thermal shock.  

Solder Volume  

Solder shall be used not to be exceed the upper limits as shown below.  

When solder volume is increased ,the mechanical stress to product is also increased . Exceeding solder volum  

may cause the failure of mechanical or 1 performance.  

Laird Performance Materials  

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Common Mode Choke CM Series  

Rev:A  

7.RELIABILITY  

ITEM  

CONDITION  

SPECIFICATION  

1. No visible mechanical  

damage  

2. Impedance or inductance  

change within user spec  

3. 30pcs  

Reference : AEC-Q200-006  

Force : 5N Dwell : 60+1 sec  

Terminal Strength  

1. No visible mechanical  

damage  

2. Impedance or inductance  

change within user spec  

3. 77pcs  

Reference : MIL-STD-202 Method 108  

125

°

C 100hrs.  

High Temperature Exposure  

Temperature Cycling  

Biased Humidity  

1. No visible mechanical  

damage  

2. Impedance or inductance  

change within user spec  

3. 77pcs  

Reference : JESD22 , Method JA-104  

-40

°

C to 125

°

C ,1000

 

cycles  

1. No visible mechanical  

damage  

2. Impedance or inductance  

change within user spec  

3. 77pcs  

Reference : MIL-STD-202 Method 103  

85°C,85%RH 1000hrs,

 

Unpowered  

1. No visible mechanical  

damage  

2. Impedance or inductance  

change within user spec  

3. 77pcs  

Reference : MIL-PPF-27  

125

°C

(Including self-heating) 1000hrs ,  

rated current applied

(as the part  

drawing)  

Operational Life  

1. No visible mechanical  

damage  

Reference : J-STD-002  

Solderability  

Method D ,category 3, 260

±

5

°

C , 5

±

1 sec,

 

2.Wetting shall be exceed 95%  

Solder : 96.5Sn/3.0 Ag/0.5Cu  

coverage  

3.30pcs  

1. No visible mechanical  

damage  

2. Impedance or inductance  

change within user spec  

3. 30pcs  

Reference : MIL-STD-202 Method 210  

Condition B No pre-heat of samples.  

SMD : Procedure 2  

Resistance to soldering Heat  

Leaded : Procedure 1  

1. No visible mechanical  

damage  

2. Impedance or inductance  

change within user spec  

3. 30pcs  

Reference :MIL-STD-202 Method 213  

Figure 1 of method 213  

SMD :Condition F  

Mechanical Shock  

Leaded : Condition C  

Laird Performance Materials  

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Common Mode Choke CM Series  

Rev:A  

ITEM  

CONDITION  

SPECIFICATION  

1. No visible mechanical  

damage  

2. Impedance or inductance  

change within user spec  

3. 30pcs  

Reference : MIL-STD-202 Method 204  

5 g`s for 20 minutes . 10-2000Hz 12  

cycles  

Vibration  

each of 3 orientations  

1. No visible mechanical  

damage  

2. Impedance or inductance  

change within user spec  

3. 30pcs  

Reference: AEC-Q200-005  

2mm (min) Dwell :60 +1 sec  

Board Flex  

External Visual  

No any defect found after visual inspection for all samples.  

No dimension issue found after dimension measurement for 30 pcs  

samples.  

Physical dimension  

Electrical characterization  

Remark : Performance for all samples can meet spec.  

Laird Performance Materials  

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Common Mode Choke CM Series  

Rev:A  

8. TEMINAL TO BE TESTED  

Teminal to be Tested  

When measuring and supplying the voltage , the following terminal is applied.  

No.  

1

ITEM  

TERMINAL TO BE TESTED  

Common Mode Impedance  

2

3

4

5

DC Resistance  

Rated Current  

Insulation Resistance  

Withstanding Voltage  

Laird Performance Materials  

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Common Mode Choke CM Series  

Rev:A  

7. PACKAGING  

7-1 Reel Dimension  

Size  

Type  

A(mm)  

9.0±0.5  

B(mm)  

C(mm)  

D(mm)  

CMA0805  

7“x8mm  

60.0±2.0  

13.5±0.5  

178.0±2.0  

Size  

P(mm) Po(mm)

 

P2(mm) Bo(mm) Ao(mm) Ko(mm)

 

D(mm) E(mm) F(mm)

 

W(mm) T(mm)  

4.0±0.1 2.0±0.1

 

2.35±0.1 1.5±0.1

 

1.67±0.15 1.55±0.1

 

1.75±0.1 3.5±0.05 8.0±0.1 0.22±0.05  

CMA0805 4.0±0.1  

Size  

Reel  

2000  

Inner Box  

10000  

Outer Box  

60000  

CMA0805  

Laird Performance Materials  

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Common Mode Choke CM Series  

Rev:A  

7-2 Tearing Off Force  

The force for tearing off cover tape is 10~100 grame in the arrow direction under the following conditions .  

Room Temp  

Room  

Humidity(%)  

Room atm  

(hPa)  

Tearing Speed  

mm/min  

(

°

C)  

5~35  

45~85  

860~1060  

300  

8. Application Notice:  

1.Storage Conditions:  

To maintain the solderability of terminal electrodes:  

a) Recommended products should be used within 12 months from the time of delivery .  

b) The packaging materal should be kept where no chlorine or sulfur exists in the air .  

2. Transportation:  

a) Products should be -handled with care to avoid damage or contamination from perspiration and skin oils .  

b) Vacuum pick up is strongly recommended for individual components .  

c) Bulk handling should ensure that abrasion and mechanical shock are minimized .  

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