Surface Mount PIN Diode Limiter
LM202802-Q-C-301 Series Datasheet
Features
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Surface Mount Limiter in Compact Outline:
8mm L x 5mm W x 2.5 mm H
Incorporates PIN Limiter & Schottky Diodes, D.C. Blocks & D.C. Return
Higher Average Power Handling than Plastic ( 100 W C.W. Power )
Lower Insertion Loss ( 1.1 dB ) & Lower Flat Leakage Power ( 21 dBm )
RoHS Compliant
Description
The LM202802-Q-C-301 Surface Mount Silicon PIN Diode Limiter is manufactured using Aeroflex / Metelics
proven hybrid manufacturing process incorporating PIN Diodes and passive devices integrated within a
ceramic substrate. This low profile, compact , surface mount component, ( 8mm L x 5mm W x 2.5 mm H )
offers superior low and high signal performance to comparable MMIC devices in QFN packages. The Limiter
Modules are designed to optimize small signal insertion loss, (N.F.) and high signal flat leakage
performance in a compact, surface mount package.
Using PIN Diodes with lower thermal resistance ( < 20 ºC/W ), and a de-coupled Schottky detector network
as a current source, RF C.W. incident power levels of +50 dBm and RF peak incident power levels of +60
dBm @ 25 μS RF pulse width, 5% duty cycle are very achievable. In addition, this design concept provides
lower flat leakage power ( < +21 dBm ) and lower spike leakage energy ( < 0.5 Ergs ) for superior LNA
protection. The LM202802-Q-C-301 limiter can be configured without a D.C. block on the output to obtain
lower flat leakage power, (< +10 dBm) with an external ZBD schottky diode. This Limiter Part Number is
LM202802-Q-B-301. Schottky diode P/N in surface mount, 3 terminal plastic package is MZB601-2012.
Applications
These LM202802-Q-C-301 and LM202802-Q-B-301 Limiters are ideal for octave band Radar applications,
from 2-8 GHz, requiring high volume, surface mount, solder re-flow manufacturing. These products are
durable, reliable, and capable of meeting all military, commercial, and industrial environments. The devices
are fully RoHS compliant and are available in tube or tape-reel.
Environmental Capabilities
The LM202802-Q-C-301 and LM202802-Q-B-301 Limiters are capable of meeting the environmental
requirements of MIL-STD-750 and MIL-STD-202.
ESD and Moisture Sensitivity Level Rating
PIN Diode Limiters are susceptible to ESD conditions as with all semiconductors. The ESD rating for this
device is Class 0, HBM. The moisture sensitivity level rating for this device is MSL 2.
Document No. DS13815, Rev. C
Revision Date: 1/14/2011
PIN Diode Limiter
LM202802-Q-C-301 & LM202802-Q-B-301 Electrical Specifications
@ Zo = 50
Ω,
TA=+ 25 ºC (Unless Otherwise Defined)
Parameter
Frequency
Insertion Loss
Return Loss
Input Compression Power
2nd Harmonic
Peak Incident Power
C.W. Incident Power
Flat Leakage Power
Symbol
F
IL
RL
P1dB
2Fo
Pinc(Pk)
Pinc(CW)
Pf
Units
GHz
dB
dB
dBm
dBc
dBm
dBm
dBm
Test Conditions
Swept Frequency
Swept Frequency
Po = 0 dBm
Swept Frequency
Po = 0 dBm
Swept Frequency
Po = 0 dBm
Fo = 2 GHz
RF Pulse Width =
25 μS, 5% duty
Swept Frequency
+60 dBm,
RF Pulse Width =
25 μS, 5% duty
Spike Leakage Energy
Es
Ergs
+60 dBm,
RF Pulse Width =
25 μS, 5% duty
Recovery Time
Τ
r
ηS
+60 dBm,
RF Pulse Width =
25 μS, 5% duty
( 50% Trailing RF
Pulse - 1dB IL )
5
10
0.5
0.6
+50
+21
+51
+23
+60
+60
+8
45
+10
50
+12
| -13 |
| -15 |
Minimum
Value
1.5
Typical
Value
2.0 - 8.0
| -1.1 |
Maximum
Value
8.5
| -1.4 |
LM202802-Q-C-301 and LM202802-Q-B-301 Absolute Maximum Ratings
Parameter
Operating Temperature
Storage Temperature
Junction Temperature
RF C.W. Incident Power @ +85 ºC
Source & Load VSWR < 1.2:1
RF Peak. Incident Power @ +85 ºC
Source & Load VSWR < 1.2:1
Insertion Loss Rate of Change
with Operating Temperature
θjc
C.W. Thermal Resistance
( Junction to Case )
Assembly Temperature
2
Absolute Maximum Value
-65 ºC to +125 ºC
-65 ºC to +150 ºC
+175 ºC
+50 dBm
+60 dBm, RF Pulse Width = 25 μS, 5% duty cycle
+60 dBm, RF Pulse Width = 50 μS, 1% duty cycle
| - 0.005 dB / º C |
10 º C/W
+260 ºC for 10 Seconds
TEL: 603-641-SEMI (7364) • metelics-sales@aeroflex.com • www.aeroflex.com/metelics
Revision Date: 1/14/11
PIN Diode Limiter
LM202802-Q-C-301 Limiter Schematic
INPUT PIN Diodes
Limiter PIN Diode
Si ZBD
Schottky
Diode
LM202802-Q-B-301 Limiter Schematic
INPUT PIN Diodes
Limiter PIN Diode
Si ZBD
Schottky
Diode
Part Number Ordering Information:
Part Number
LM202802-Q-C-301-T
LM202802-Q-C-301-R
LM202802-Q-C-301-E
LM202802-Q-B-301-T
LM202802-Q-B-301-R
LM202802-Q-B-301-E
DC Blocking Configuration
D.C. Blocks on Input & Output
D.C. Blocks on Input & Output
D.C. Blocks on Input & Output
D.C. Block on Input Only
D.C. Block on Input Only
D.C. Block on Input Only
Description
Tube Packaging
Tape-Reel Packaging
RF Evaluation Board
Tube Packaging
Tape-Reel Packaging
RF Evaluation Board
TEL: 603-641-SEMI (7364) • metelics-sales@aeroflex.com • www.aeroflex.com/metelics
Revision Date: 1/14/11
3
PIN Diode Limiter
Assembly Instructions
The LM202802-Q-B-301 and LM202802-Q-C-301 Limiters are capable of being placed onto circuit boards with pick
and place manufacturing equipment from tube or tape-reel dispensing. The devices are attached to the circuit board
using conventional solder re-flow or wave soldering procedures with RoHS type or Sn 63 / Pb 37 type solders per
Table I and Graph I Time-Temperature recommended profile.
Table 1: Time-Temperature Profile for Sn 60/Pb40 or RoHS Type Solders
Profile Feature
Average ramp-up rate
(TL to TP)
Preheat
- Temperature Minimum (TSMIN)
- Temperature Maximum (TSMAX)
- Time (Minimum to maximum) (ts)
TSMAX to TL
- Ramp-up Rate
Time Maintauined above:
- Temperature (TL)
- Time (tL)
Peak Temperature (TP)
Time within 5°C of actual
Peak Temperature (TP)
Ramp-down Rate
Time 25°C to Peak Temperature
183°C
60-150 seconds
225
+0 / -5°C
Sn-Pb Eutectic
Assembly
3°C/second maximum
Pb-Free
Assembly
3°C/second maximum
100°C
150°C
60-120
seconds
150°C
200°C
60-180
seconds
3°C/second maximum
217°C
60-150 seconds
245
+0/-5°C
10-30 seconds
6°C/second maximum
6
minutes maximum
20-40 seconds
6°C/second maximum
8
minutes maximum
Graph1: Solder Re-Flow Time-Temperature Function
4
TEL: 603-641-SEMI (7364) • metelics-sales@aeroflex.com • www.aeroflex.com/metelics
Revision Date: 1/14/11
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