Components for CAN Physical Layer

1. Common Mode Chokes

Common mode chokes like L1 in the image above supress wire-bound common mode interferences, i. e. transients that occur with the same polarity on two electrical connections at the same time. This list gives an overview of automotive common mode chokes for differential CAN signal lines.

Manufacturer	Type	Features	RUT Art. Nr.	Size	other	Operating Temp.
Murata	DLW43SH101XK2L	100µH / 100mA	IND8521	1812		125
Murata	DLW32SH101XF2	100µH / 150mA	–	1210	CAN-FD	125
TDK	ACT1210-101-2P-TL00	100µH / 150mA	IND18368	1210	identical to B82786C0104H002	150
PULSE	PE-1210ACC101STS	100µH / 150mA	IND17992	1210		125
Epcos	B82787C0104H002	100µH / 150mA	IND18105	1812	identical to ACT45B-101-2P	150
TDK	ACT45B-101-2P	100µH / 200mA	IND12750	1812	identical to B82787C0104H002	150
TDK	ACT1210-110-2P-TL00	11µA / 300mA	IND19153	1210	identical to B82786C0113H002	150
TDK	ACT45B-220-2P	22µA / 200mA	IND7833	1812		150
PULSE	PE-1210ACC220STS	22µH / 250mA	IND17989	1210		125
TDK	ACT1210-220-2P-TL00	22µH / 250mA	–	1210	identical to B82786C0223H002	150
MURATA	DLW32SH510XK2L	51µH / 200mA	IND17915	1210		125
Epcos	B82786C0513H002	51µH / 200mA	–	1210	identical to ACT1210-510-2P-TL00	150
TDK	ACT1210-510-2P-TL00	51µH / 200mA	IND13813	1210	identical to B82786C0513H002	150
PULSE	PE-1210ACC510STS	51µH / 200mA	IND17991	1210		125
TDK	ACT45B-510-2P	51µH / 200mA	IND6528	1812	identical to B82787C0513H002	150
Epcos	B82787C0513H002	51µH / 200mA	IND18104	1812	identical to ACT45B-510-2P	150
Murata	DLW43SH510XK2	51µH / 230mA	IND17137	1812		125

Table 1: A selection of common mode chokes. Expect errors and omissions. Refer to the datasheet for specifications before selecting a component.

2. Transient Voltage Suppressors for CAN Data Lines

The inputs of CAN transceivers have to be protected against voltage spikes with reference to ground. This is usually done by ESD diodes like D1 and D2 in the image above. Table 2 lists a small selection of automotive dual (two bidirectional) protection diodes in one package.

Supplier	Type	Features
Vishay	VCANxxx	dual, bidirectional, SOT323 or SOT23
DIODES	DSD1CAN2SOQ	dual, bidirectional, 200W, SOT23
Littelfuse	SM24CANA-02HTG	dual, bidirectional, 200W, SOT23-3

Table 2: Automotive protection devices for CAN. Expect errors and omissions. Refer to the datasheet for specifications before selecting a component.

3. CAN Transceivers

CAN Transceivers are the line drivers of the CAN bus. They come in many different varieties regarding package, power supply, power saving features, wake-up mechanism and so on. For this reason Table 3 only shows complete product series with their main features. For details please refer to the respective datasheet.

Supplier	Type	Features
Infineon	TLE925x	CAN-FD up to 5 Mbit/s
Infineon	TLE725x	CAN-FD up to 2 Mbit/s
Infineon	TLE625x	CAN up to 1 Mbit/s
BOSCH	CF1xx	CAN up to 1Mbit/s

Table 3: Examples of Automotive CAN Transceivers. Expect errors and omissions. Refer to the datasheet for specifications before selecting a component.

4. Find more Options with LIN-Transceivers here.

Last update 20210430