PSRDA3.3-4-LF-T7 - PROTEK DEVICES

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05096.R12 5/18 Page 1

05096

PSRDA3.3-4 - PSRDA15-4

500 WATT LOW CAPACITANCE STEERING DIODE/TVS ARRAY

ISO 9001: 2015 CERTIFIED

DESCRIPTION

The PSRDAxx-4 Series are low capacitance mul-line steering diode/transient voltage suppressor arrays that provides

board level protecon for standard TTL and CMOS bus line applicaons against the damaging eects of ESD, terary

lightning and switching transients.

The PSRDAxx-4 Series has a peak pulse power rang of 500 Was for an 8/20µs waveshape. This device series meets

the IEC 61000-4-2, IEC 61000-4-4 and IEC 61000-4-5 requirements.

FEATURES

• Compable with IEC 61000-4-2 (ESD): Air - 15kV, Contact - 8kV

• Compable with IEC 61000-4-4 (EFT): 40A - 5/50ns

• Compable with IEC 61000-4-5 (Surge): 24A, 8/20µs - Level 2(Line-

Gnd) & Level 3(Line-Line)

• 500 Was Peak Pulse Power per Line (tp = 8/20µs)

• Unidireconal Conguraon

• Available in 3.3V, 5V, 12V & 15V

• Protects Up to Four I/O Ports

• Low Capacitance: 5pF per Diode

• RoHS Compliant

• REACH Compliant

MECHANICAL CHARACTERISTICS

• Molded JEDEC SO-8 Package

• Approximate Weight: 70 milligrams

• Lead-Free Pure-Tin Plang (Annealed)

• Solder Reow Temperature:

Pure-Tin - Sn, 100: 260-270°C

• 12mm Tape and Reel Per EIA Standard 481

• Flammability Rang UL 94V-0

APPLICATIONS

• Computer Interface Protecon

• Ethernet - 10/100/1000 Base T

• Set-Top Box Protecon

• Video Card

PIN CONFIGURATION



1 2 4

567

GND I/O 4 I/O 3 GND

I/O 2+V

REF

I/O 1

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05096

PSRDA3.3-4 - PSRDA15-4

ISO 9001: 2015 CERTIFIED

TYPICAL DEVICE CHARACTERISTICS

MAXIMUM RATINGS 

PARAMETER SYMBOL VALUE UNITS

Peak Pulse Power (tp = 8/20µs) - See Figure 1 PPP 500 Was

Operang Temperature TL-55 to 150 °C

Storage Temperature TSTG -55 to 150 °C

Connuous Power Dissipaon PPC 1000 mW

Maximum Forward Voltage @ 10mA (Note 1) VF1.1 Volts

NOTES

1. Measured between pins 8 or 5 to 1, 2, 3, 4, 6 and 7.

ELECTRICAL CHARACTERISTICS PER LINE 

PART

NUMBER

DEVICE



RATED



VOLTAGE

VWM

VOLTS

MINIMUM



VOLTAGE

mA

V

VOLTS

MAXIMUM

CLAMPING

VOLTAGE

(Fig. 2)

P = 1A

VOLTS

MAXIMUM



CURRENT

WM

µA

MAXIMUM

CAPACITANCE

ote

ig

z

C

PSRDA3.3-4 PRA 3.3 4.0 6.5 125 5

PSRDA05-4 PRB 5.0 6.0 9.8 20 5

PSRDA12-4 PRD 12.0 13.3 19.0 1 5

PSRDA15-4 PRE 15.0 16.7 24.0 1 5

NOTES

1. Capacitance measured at VWM = VCC connected between I/O pins to pin 8 and 5 (Gnd). VR = VWM @ 1MHz. As shown in Figure 6, REF1 is connected to ground, REF2 is connected to +VCC,

and input applies to VCC = 5V, VSIGN = 30mV, F = 1MHz

FIGURE 1



t

500W, 8/20µs Waveform



PPP

100





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05096

PSRDA3.3-4 - PSRDA15-4

ISO 9001: 2015 CERTIFIED

TYPICAL DEVICE CHARACTERISTICS

Peak Pulse Power

8/20µs

Average Power

FIGURE 3

POWER DERATING CURVE

TA - Ambient Temperature - °C

0 25 50 75 100 125 150



100



TEST

WAVEFORM

PARAMETERS

tf = 8µs

td = 20µs

e-t

Peak Value IPP

td = t/(IPP/2)

FIGURE 2

PULSE WAVE FORM

t - Time - µs

0 5 10 15 20 25 30

IPP - Peak Pulse Current - % of IPP



100

120

FIGURE 4







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05096.R12 5/18 Page 4

05096

PSRDA3.3-4 - PSRDA15-4

ISO 9001: 2015 CERTIFIED

TYPICAL DEVICE CHARACTERISTICS

FIGURE 5



0 5 10 15 20 25 30

IPP - Peak Pulse Current - Amps



VC - Clamping Voltage - Volts

REF1

+VCC

VSIGN

REF2

I/O

FIGURE 6

INPUT CAPACITANCE CIRCUIT

FIGURE 7





-50

-20









-50

-20



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05096.R12 5/18 Page 5

05096

PSRDA3.3-4 - PSRDA15-4

ISO 9001: 2015 CERTIFIED

SPICE MODEL

FIGURE 1

SPICE MODEL



PARAMETER UNIT  LCRD

BV V See Table 2 200

IBV µA 1 0.01

Cjo pF See Table 2 5

ISASee Table 2 1E-13

Vj V 0.6 0.6

M-0.33 0.33

N-1 1

RSOhms See Table 2 0.31

TT s1E-8 1E-9

EG eV 1.11 1.11



PART NUMBER BV Cjop IS Rs

PSRDA3.3-4 4.0 438 1E-11 0.21

PSRDA05-4 6.0 284 1E-11 0.14

PSRDA12-4 13.3 123 1E-11 0.4

PSRDA15-4 16.7 102 1E-11 0.52

ABD - Avalanche Breakdown Diode (TVS)

LCRD: Low Capacitance Recer Diode

Lg - Lead Inductance

0.8nH

LCRD

I/O ABD

LCRD

VCC

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05096

PSRDA3.3-4 - PSRDA15-4

ISO 9001: 2015 CERTIFIED

APPLICATION INFORMATION



Circuit connecvity is as follows:

• Pins 1, 2, 4, 6 and 7 connected to the datalines.

• Pin 5 and 8 connected to ground.

• Pins 2 and 3 connected to the databus.

CIRCUIT BOARD RECOMMENDATIONS

Circuit board layout is crical for electromagnec compability protecon. The following guidelines are recommended:

• The protecon device should be placed near the input terminals or connectors, the device will divert the transient current

immediately before it can be coupled into the nearby traces.

• The path length between the TVS device and the protected line should be minimized.

• All conducve loops including power and ground loops should be minimized.

• The transient current return path to ground should be kept as short as possible to reduce parasic inductance.

• Ground planes should be used whenever possible. For mullayer PCBs, use ground vias.

124

5 6 7

VBUS

D+

D-

GND

USB Port

VBUS

D+

D-

GND

USB Port

USB Controller

VBUS

GND GND

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05096.R12 5/18 Page 7

05096

PSRDA3.3-4 - PSRDA15-4

ISO 9001: 2015 CERTIFIED

SO-8 PACKAGE INFORMATION

OUTLINE DIMENSIONS

DIM MILLIMETERS INCHES

MIN MAX MIN MAX

A4.80 5.00 0.189 0.196

B 3.80 4.00 0.150 0.157

C 1.35 1.75 0.054 0.068

D0.35 0.49 0.014 0.019

F 0.40 1.25 0.016 0.049

G1.27 BSC 0.05 BSC

J 0.18 0.25 0.007 0.009

K0.10 0.25 0.004 0.008

P5.80 6.20 0.229 0.244

R0.25 0.50 0.010 0.019

NOTES

1. -T- = Seang plane and datum surface.

2. Dimensions “A” and “B” are datum.

3. Dimensions “A” and “B” do not include mold protrusion.

4. Maximum mold protrusion is 0.015” (0.380mm) per side.

5. Dimensioning and tolerances per ANSI Y14.5M, 1982.

6. Dimensions are exclusive of mold ash and metal burrs.

PAD LAYOUT DIMENSIONS

DIM MILLIMETERS INCHES

MIN MAX MIN MAX

A1.14 1.40 0.045 0.055

B 0.64 0.89 0.025 0.035

C 6.22 -0.245 -

D3.94 4.17 0.155 0.165

E 1.02 1.27 0.040 0.050

NOTES

1. Controlling dimension: inches.

-A-

8 5

-B- P

-T-

K J

R x 45°

0° - 10°

4 PL

0.010” (0.25mm) MB

8 PL

0.010” (0.25mm) B

+AT

MSS

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05096.R12 5/18 

05096

PSRDA3.3-4 - PSRDA15-4

ISO 9001: 2015 CERTIFIED

TAPE AND REEL

User Direcon of Feed

A0 P

P2 E

10 Pitches Cumulave

Tolerance on tape ± 0.2

SPECIFICATIONS

REEL DIA. TAPE

WIDTH A0 B0  D E F W P0 P2 P tmax

178mm (7”) 12mm 6.50 ± 0.10 5.40 ± 0.10 2.00 ± 0.10 1.50 ± 0.10 1.75 ± 0.10 5.50 ± 0.05 12.00 ± 0.30 4.00 ± 0.12 2.00 ± 0.10 8.00 ± 0.10 0.25

NOTES

1. Dimensions are in millimeters.

2. Surface mount product is taped and reeled in accordance with EIA-481.

3. Sux - T7 = 7” Reel - 1,000 pieces per 12mm tape.

4. Sux - T13 = 13” Reel - 2,500 pieces per 12mm tape.

5. Bulk product shipped in tubes of 98 pieces per tube.

6. Marking on Part - marking code (see page 2), date code, logo and pin one dened by dot on top of package.

ORDERING INFORMATION

BASE PART NUMBER

xx = VoltageLEADFREE SUFFIX TAPE SUFFIX  REEL SIZE TUBE QTY

PSRDAxx-4 -LF -T7 1,000 7” 98

PSRDAxx-4 -LF -T13 2,500 13” 98

This device is only available in a Lead-Free conguraon.

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05096.R12 5/18 Page 9

05096

PSRDA3.3-4 - PSRDA15-4

ISO 9001: 2015 CERTIFIED