Features
■ Formerly brand
■ Extremely high speed performance
■ Blocks high voltages and currents
■ Low insertion loss
■ Two TBU® protectors in one small package
■ Very high bandwidth; GHz compatible
■ RoHS compliant*, UL Recognized
P650-U and P850-U Series TBU® High-Speed Protectors
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Transient Blocking Units - TBU® Devices
Bourns® Model P650-U and P850-U products are high-speed,
unidirectional protection components, constructed using
MOSFET semiconductor technology, designed to protect against
faults caused by short circuits, AC power cross, induction and
lightning surges.
The TBU® high-speed protector, triggering as a function of the
MOSFET, blocks surges and provides an effective barrier behind
which sensitive electronics are not exposed to large voltages or
currents during surge events. The TBU® device is provided in a
surface mount DFN package and meets industry standard
requirements such as RoHS and Pb Free solder refl ow profi les.
Electrical Characteristics (Tamb = 25 °C)
The P-U Series TBU® devices are unidirectional; specifi cations are valid for input direction only. For the output direction, the TBU® device is a
resistor.
Absolute Maximum Ratings (Tamb = 25 °C)
Symbol Parameter Value Unit
Vimp Maximum protection voltage for impulse faults with rise time ≥ 1 µsec P650-Uxxx-WH
P850-Uxxx-WH
650
850 V
Vrms
Maximum protection voltage for continuous Vrms faults connected as
a series pair (refer to page 3 Test Confi guration Diagram)
P650-Uxxx-WH
P850-Uxxx-WH
300
425 V
Top Operating temperature range -40 to +85 °C
Tstg Storage temperature range -65 to +150 °C
Agency Approval
UL recognized component File # E315805.
Industry Standards
Description Model
Telcordia GR-1089
Port Type 3, 5 P650-U
Port Type 2, 4 P850-U
ITU-T K.20, K.20E, K.21, K.21E,
K.45 P850-U
Symbol Parameter Min. Typ. Max. Unit
Iop Maximum current through the device that will not cause
current blocking
P650-U180-WH
P650-U260-WH
P850-U180-WH
P850-U260-WH
180
260
180
260
mA
Itrigger Typical current for the device to go from normal operating
state to protected state
P650-U180-WH
P650-U260-WH
P850-U180-WH
P850-U260-WH
220
330
220
330
mA
Iout Maximum current through the device
P650-U180-WH
P650-U260-WH
P850-U180-WH
P850-U260-WH
360
520
360
520
mA
Rdevice Series resistance of the TBU® device P650-Uxxx-WH
P850-Uxxx-WH
6
8
7
9Ω
Rbal Line-to line series resistance difference between two TBU® devices 0.5 Ω
tblock Maximum time for the device to go from normal operating
state to protected state
P650-Uxxx-WH
P850-Uxxx-WH 1µs
Iquiescent Current through the triggered TBU® device with 50 Vdc circuit
voltage 1mA
Vreset Voltage below which the triggered TBU® device will
transition to normal operating state
P650-Uxxx-WH
P850-Uxxx-WH 11
14 V
*RoHS COMPLIANT
The P650-U & P850-U Series are
currently available, but not recom-
mended for new designs. Bourns®
TBU-DT Series is preferred.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Typical Performance Characteristics
P650-U and P850-U Series TBU® High-Speed Protectors
V-I Characteristics Time to Block vs. Fault Current
Trigger Current vs. Temperature
Trigger
Current
Reset
Voltage
Threshold
1/R
ITRIG
I
V
0.0000001
0.000001
0.00001
0.0001
0.001
0.01
0.1
1
0.1 1 10 100 1000
Fault Current
(
A
)
Time to Block (sec)
20
40
60
80
100
120
140
-40 -20 0 20 40 60 80
Temperature (°C)
% of Trigger Current
Applications
■ Mb Ethernet port protection
■ Gb Ethernet port protection
■ Isolated and fl oating interfaces
P650-U and P850-U Series TBU® High-Speed Protectors
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Operational Characteristics
P650-U Lightning, 650 V P850-U Lightning, 850 V
The graphs below demonstrate the operational characteristics of the TBU® protector. For each graph the fault voltage, protected side
voltage, and current is presented.
P650-U Power Fault, 120 Vrms, 25 A P850-U Power Fault, 230 Vrms, 25 A
V1 V2
Load
1 us/div.
100 V/div.
200 mA/div.
Ch1 V1 Ch2 V2 Ch3 Current
1
3
2
1 us/div.
100 V/div.
200 mA/div.
Ch1 V1 Ch2 V2 Ch3 Current
1
3
2
4 ms/div.
100 V/div.
200 mA/div.
Ch1 V1 Ch2 V2 Ch3 Current
1
2
3
4 ms/div.
100 V/div.
200 mA/div.
Ch1 V1 Ch2 V2 Ch3 Current
1
2
3
TEST CONFIGURATION DIAGRAM
64
13
TBU® Device
Line
Side Load
Side
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
P650-U and P850-U Series TBU® High-Speed Protectors
Product Dimensions
Recommended Pad Layout
Pad # Apply
1 In1
2NC
3 Out1
4 Out2
5NC
6 In2
NC = Solder to PCB; do not make electrical
connection, do not connect to ground.
Pad Designation
TBU® devices have matte-tin termination fi nish. Suggested layout should use non-solder mask
defi ne (NSMD). Recommended stencil thickness is 0.10-0.12 mm (.004-.005 in.) with stencil
opening size 0.025 mm (.0010 in.) less than the device pad size. As when heat sinking any power
device, it is recommended that, wherever possible, extra PCB copper area is allowed. For mini-
mum parasitic capacitance, do not allow any signal, ground or power signals beneath any of the
pads of the device. Block Diagram
Thermal Resistances
Symbol Parameter Value Unit
Rth(j-a)
Junction to leads (package) 105 °C/W
Junction to leads (per TBU® device) 202 °C/W
Refl ow Profi le
Profi le Feature Pb-Free Assembly
Average Ramp-Up Rate (Tsmax to Tp) 3 °C/sec. max.
Preheat
- Temperature Min. (Tsmin)
- Temperature Max. (Tsmax)
- Time (tsmin to tsmax)
150 °C
200 °C
60-180 sec.
Time maintained above:
- Temperature (TL)
- Time (tL)
217 °C
60-150 sec.
Peak/Classifi cation Temperature (Tp) 260 °C
Time within 5 °C of Actual Peak Temp. (tp) 20-40 sec.
Ramp-Down Rate 6 °C/sec. max.
Time 25 °C to Peak Temperature 8 min. max.
PIN 1
A
B
D
C
4
3
6
1
5
2
E
J
J
N
N
H
P
G
K
L
F
TOP VIEW SIDE VIEW BOTTOM VIEW
H
DIMENSIONS: MM
(INCHES)
Dim. Min. Typ. Max.
A 6.15
(.242)
6.25
(.246)
6.35
(.250)
B7.65
(.301)
7.75
(.305)
7.85
(.309)
C0.80
(.031)
0.85
(.033)
0.90
(.035)
D0.000
(.000)
0.025
(.001)
0.050
(.002)
E 0.50
(.020)
0.55
(.022)
0.60
(.024)
F1.20
(.047)
1.25
(.049)
1.30
(.051)
G4.20
(.165)
4.25
(.167)
4.30
(.169)
H2.45
(.096)
2.50
(.098)
2.55
(.100)
J0.20
(.008)
0.25
(.010)
0.30
(.012)
K0.45
(.018)
0.50
(.020)
0.55
(.022)
L0.65
(.026)
0.70
(.028)
0.75
(.030)
N0.20
(.008)
0.25
(.010)
0.30
(.012)
P0.70
(.028)
0.75
(.030)
0.80
(.031)
Q3.20
(.126)
3.25
(.128)
3.30
(.130)
2.525
(.099)
0.50
(.020)
1.25
(.049)
0.575
(.023)
0.375
(.015)
0.70
(.028)
4.275
(.168)
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
3312 - 2 mm SMD Trimming Potentiometer
P650-U and P850-U Series TBU® High-Speed Protectors
Typical Part MarkingHow to Order
P 650 - U 180 - WH
Form Factor
P = Two TBU® protectors in one device
Impulse Voltage Rating
650 = 650 V
850 = 850 V
Directional Indication for Paired Devices
U = Unidirectional
Iop Indicator
180 = 180 mA
260 = 260 mA
Packaging Specifi cations (per EIA468-B)
B
A
DC
NF
G (MEASURED AT HUB)
USER DIRECTION OF FEED
K0
B0
P2
D1
CENTER
LINES OF
CAVITY
EMBOSSMENT
tD
P0
TOP
COVER
TAPE
E
W
P
A0
DIMENSIONS: MM
(INCHES)
Device A B C D G N
Min. Max. Min. Max. Min. Max. Min. Max. Ref. Ref.
P650-U, P850-U 326
(12.835)
330.25
(13.002)
1.5
(.059)
2.5
(.098)
12.8
(.504)
13.5
(.531)
20.2
(.795) - 16.5
(.650)
102
(4.016)
Device A0 B
0 D D1 E F
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. max.
P650-U,
P850-U
6.5
(.256)
6.7
(.264)
8.0
(.315)
8.2
(.323)
1.5
(.059)
1.6
(.063)
1.5
(.059) -1.65
(.065)
1.85
(.073)
7.4
(.291)
7.6
(.299)
Device K0P P0 P
2 t W
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
P650-U,
P850-U
1.4
(.055)
1.6
(.063)
11.9
(.469)
12.1
(.476)
3.9
(.159)
4.1
(.161)
1.9
(.075)
2.1
(.083)
0.25
(.010)
0.35
(.014)
15.7
(.618)
16.3
(.642)
QUANTITY: 3000 PIECES PER REEL
MARKING NUMBER
65UB = P650-U180-WH
65UC = P650-U260-WH
85UB = P850-U180-WH
85UC = P850-U260-WH
MANUFACTURER’S
TRADEMARK*
PIN 1
MANUFACTURING
DATE CODE*
- 1ST DIGIT INDICATES THE YEAR’S 6-MONTH PERIOD.
- 2ND DIGIT INDICATES THE WEEK NUMBER IN THE 6-MONTH PERIOD.
- 3RD & 4TH DIGITS INDICATE SPECIFIC LOT FOR THE WEEK.
6-MONTH PERIOD CODES:
A = JAN-JUN 2009 C = JAN-JUN 2010 E = JAN-JUN 2011
B = JUL-DEC 2009 D = JUL-DEC 2010 F = JUL-DEC 2011
EXAMPLE: ARBC
- 1ST DIGIT ‘A’ = JAN-JUN 2009
- 2ND DIGIT ‘R’ = WEEK 18; WEEK OF APRIL 27
- 3RD & 4TH DIGITS ‘BC’ = LOT SPECIFIC INFORMATION
*TRANSITION FROM FULTEC TRADEMARK AND LOT CODE
TO BOURNS TRADEMARK AND DATE CODE IN 2009.
V1 V2
G5200AS
G5200AS
G5200AS
G5200AS
P850-U
P850-U
P850-U
P850-U
P850-U
P850-U
P850-U
P850-U
RJ 45 connector
RJ 45 connector
2000 V, 22 pF 2000 V, 22 pF
Tx
Rx Tx
Rx
Tx
Rx Tx
Rx
P650-U and P850-U Series TBU® High-Speed Protectors
Reference Applications
A cost-effective protection solution utilizes the Bourns® TBU® protection devices. The diagrams below illustrate common
confi gurations of these components. The graph at the bottom demonstrates the operational characteristics of the circuit.
Typical Confi guration Diagrams
GbE Ethernet Protection
Up to 1500 V Common-Mode Lightning Protection
“TBU” is a registered trademark of Bourns, Inc. in the United States and other countries.
REV. 11/11
P850-U with G5200AS 4000 V Lightning 10/700 µsec, 150 A
GbE Ethernet Protection
Up to 6000 V Common-Mode Lightning Protection
1 µs/div.
100 V/div.
200 mA/div.
Ch1 V1 Ch2 V2 Ch3 Current
1
3
2
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Asia-Pacifi c: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe: Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
