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URC_D-30WR2

2013.03.11-A/0

Page 3 of 6

EMC SPECIFICATIONS

CE

CISPR22/EN55022 CLASS A（Without External Circuit）/

CLASS B（External Circuit Refer to

Figure1-②）

EMI

RE

CISPR22/EN55022 CLASS A（Without External Circuit）/

CLASS B（External Circuit Refer to

Figure1-②）

ESD

IEC/EN61000-4-2

Contact

±4KV

perf. Criteria B

RS

IEC/EN61000-4-3

10V/m

perf. Criteria A

EFT

IEC/EN61000-4-4

±2KV

perf. Criteria B（External Circuit Refer to Figure1-①）

Surge

IEC/EN61000-4-5

±2KV

perf. Criteria B（External Circuit Refer to Figure1-①）

CS

IEC/EN61000-4-6

3 Vr.m.s

perf. Criteria A

EMS

Voltage dips, short and

interruptions immunity

IEC/EN61000-4-29

0%-70%

perf. Criteria B

EMC RECOMMENDED CIRCUIT

V in

G ND

+ Vo2

-Vo2

EUT

L O AD

C2

L CM

②

C0

TVS

LDM

MOV

FU SE

①

C1

C4

V in

G ND

C3

L O AD

0V

+ Vo1

LO AD

(Figure 1)

Recommended external circuit parameters:

Model

URC24_D-30WR2

URC48_D-30WR2

FUSE

Choose according to actual input current

MOV

10D560K

10D101K

LDM

56

μH

TVS

SMCJ48A

SMCJ90A

C0

120

μF/50V

120

μF/100V

C1

4.7

μF /50V

2.2

μF /100V

LCM

2.2mH（FL2D-30-222）

C2

4.7

μF /50V

2.2

μF /100V

C3

1nF /2KV

2nF /2KV

C4

1nF /2KV

2nF /2KV

Note: 1. In Figure 1,part①is EMS Recommended external circuit, part②is EMI recommended external circuit. Choose according to requirements.

2. FL2D-30-222 is the EMC auxiliary component of our company.

EMC RECOMMENDED CIRCUIT PCB LAYOUT

(Figure 2)

EMC TEST WAVEFORM(CLASS B TEST CIRCUIT)

URC240515D-30WR2

CE (Positive line)

URC240515D-30WR2

CE (Negative line)