BCR420UFDQ / BCR421UFDQ

Document number: DS39535 Rev. 3 - 2

2 of 13

www.diodes.com

January 2018

© Diodes Incorporated

BCR420UFDQ / BCR421UFDQ

Marking Information

Absolute Maximum Ratings (Voltage relative to GND, @TA = +25°C, unless otherwise specified.)

Characteristic

Symbol

Value

Unit

Enable Voltage

BCR420U

VEN

40

V

BCR421U

18

Output Current

IOUT

500

mA

Output Voltage

VOUT

40

V

Reverse Voltage Between all Terminals

VR

0.5

V

Thermal Characteristics (@TA = +25°C, unless otherwise specified.)

Characteristic

Symbol

Value

Unit

Power Dissipation

(Note 6)

PD

1.7

W

(Note 7)

1.3

Thermal Resistance, Junction to Ambient

(Note 6)

RθJA

75

°C/W



(Note 7)

100

Thermal Resistance, Junction to Lead

(Note 8)

RθJL

35

°C/W

Recommended Operating Junction Temperature Range

TJ

-55 to +150

°C

Maximum Operating Junction and Storage Temperature Range

TJ , TSTG

-65 to +150

ESD Ratings (Note 9)

Characteristic

Symbol

Value

Unit

JEDEC Class

Electrostatic Discharge

– Human Body

Model

BCR420U

HBM

700

V

1B

BCR421U

1000

V

1C

Electrostatic Discharge

– Machine Model

BCR420U

MM

300

V

B

BCR421U

400

V

C

Notes:

6. For a device mounted with the OUT leads on 50mm x 50mm 1oz copper that is on a single-sided 1.6mm FR-4 PCB; device is measured under still

air conditions while operating in steady-state.

7. Same as Note 6, except mounted on 25mm x 25mm 1oz copper.

8. RθJL = Thermal resistance from junction to solder-point (at the end of the OUT leads).

9. Refer to JEDEC specification JESD22-A114 and JESD22-A115

.

xxx = Part Marking (See Ordering Information)

Y = Year: 0~9

W = Week: A~Z: 1~26 week;

a~z; 27~52 week; z represents

52 and 53 week

xxx