MADP-009989-14340T [TE]
Fast MRI Protection Diode;
| 型号： | MADP-009989-14340T |
| 厂家： | 
TE CONNECTIVITY |
| 描述： | Fast MRI Protection Diode |
| 文件： | 总5页 (文件大小：653K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MADP-009989
Fast MRI Protection Diode
Rev. V2
Features
Available in Surface Mount Package & Axial Lead
Passivated Chip
Ultra Low Magnetic Construction
Non Cavity Design
Thermally Matched Configuration
Low Capacitance @ 0 V bias
Low Conductance @ 0 V bias
Compatible with Automatic Insertion Equipment
RoHS* Compliant
MELF
Axial
Description
The MADP-009989 diode was designed to protect MRI receivers from high RF energy fields including long RF
pulses and RF spike pulses present in most MRI machines. This diode acts as a passive protector (limiter) for the
MRI receiver. No forward bias voltage is required to turn on the diode. It is self-biased by the RF transmitter pulse
power. A switch driver is not needed for this receiver protection application.
Receiver protector diodes appear directly across the input port of the receiver. They are connected in anti-parallel
pairs to limit the RF carrier excursion in both polarities. They must, therefore, exhibit extremely low insertion loss,
both in the “on” state (high power present) and the “off” state (receiver power present) so as not to decrease the
receiver’s sensitivity. This diode is available in two package configurations for flexibility in design.
The MADP-009989 is ideally suited for MRI Receiver Protection and Body Coil Isolation.
Electrical Specifications: TA = +25°C
Parameter
Forward Voltage1
Test Conditions
Units
V
Min.
—
Typ.
—
Max.
IF = 10 mA, TJ = 25°C
IF = 100 mA, TJ = 25°C
1.0
1.2
Reverse Breakdown Voltage1
Reverse Current1
IR = 10 µA
V
75
—
—
—
VR = 20 V, TJ = 25°C
VR = 50 V, TJ = 25°C
50
500
nA
pF
µs
—
Total Capacitance
Conductance
VR = 0 V, 1 MHz
VR = 0 V, 64 MHz
—
1.2
—
5.0
40
—
1. Short term duration test pulse used to minimize self heating effect.
Ordering Information
Package
Description
Part Number
Package
MADP-009989-14320T
MADP-009989-14340T
Melf
1200 piece reel
3500 piece reel
* Restrictions on Hazardous Substances,
European Union Directive 2011/65/EU.
Axial
1
MACOM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
DC-0012239
MADP-009989
Fast MRI Protection Diode
Rev. V2
Absolute Maximum Ratings2,3
Parameter
Absolute Maximum
Junction Temperature
175°C
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
75 V
RMS Reverse Voltage
Forward Current
50 V
150 mA DC
2.5 A
Non-Repetitive Peak Forward Surge Current
8.3 ms Single half sine wave
Storage Temperature
Operating Temperature
-65°C to +175°C
-65°C to +175°C
2. Exceeding any one or combination of these limits may cause permanent damage to this device.
3. MACOM does not recommend sustained operation near these survivability limits.
Thermal Characteristics
Parameter
Test Conditions
Units
Axial Leaded RθJL @ lead length = 3/8 inches
Surface Mount (US) RθJEC
150°C/W
40°C/W
Thermal Resistance
2
MACOM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
DC-0012239
MADP-009989
Fast MRI Protection Diode
Rev. V2
Typical Performance Curves
If vs. VF
Conductance vs. Frequency
101
100
100
10-1
10-2
10-3
10-4
10-5
10-6
10
1
150
0
1
2
3
4
5
10
100
Forward Voltage (VF)
Frequency (MHz)
Capacitance vs. Frequency
5
4
3
2
1
0
0
20
40
60
80
100
120
140
Frequency (MHz)
3
MACOM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
DC-0012239
MADP-009989
Fast MRI Protection Diode
Rev. V2
Outline Drawing, Hermetically Sealed Glass Axial Leaded
Lead Finish: tin
Lead Material: copper
Dimensions
Polarity: cathode end is banded
Package Weight: 0.150 G
Inches
Millimeters
Symbol
Notes
Min.
Max.
Min.
Max.
BD
BL
LD
LL
0.056
0.130
0.018
1.00
0.080
0.180
0.022
1.420
3.300
0.046
2.03
4.57
0.56
2
—
3
1.500 25.400 38.10
—
Outline Drawing, Hermetically Sealed Glass
Lead Finish: tin
End Cap Material (U, US): copper
Polarity: cathode end is banded
Package Weight: 0.095 G
Mounting Surface Selection: The
Axial Coefficient of Expansion (COE) of this
device is approximately +4PPM/°C. The
COE of the Mounting Surface System
should be selected to provide a suitable
match with this device.
Dimensions
Inches
Millimeters
Symbol
Min.
Max.
Min.
Max.
D
B
0.070
0.165
0.019
0.003
0.085
0.195
0.028
—
1.78
4.19
2.16
4.95
0.71
—
ECT
S
0.048
0.08
Notes:
1. Dimensions are in inches. Millimeters are given for general information only.
2. Dimension BD shall be measured at the largest diameter.
3. The specified lead diameter applies in the zone between .050 inch (1.27 mm) from the diode body to the end of the lead. Outside of this
zone lead shall not exceed BD.
4. In accordance with ASME Y14.5M, diameters are equivalent to Φx symbology.
4
MACOM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
DC-0012239
MADP-009989
Fast MRI Protection Diode
Rev. V2
MACOM Technology Solutions Inc. All rights reserved.
Information in this document is provided in connection with MACOM Technology Solutions Inc ("MACOM")
products. These materials are provided by MACOM as a service to its customers and may be used for
informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such products or
in any separate agreement related to this document, MACOM assumes no liability whatsoever. MACOM
assumes no responsibility for errors or omissions in these materials. MACOM may make changes to
specifications and product descriptions at any time, without notice. MACOM makes no commitment to update
the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future
changes to its specifications and product descriptions. No license, express or implied, by estoppels or otherwise,
to any intellectual property rights is granted by this document.
THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, RELATING TO SALE AND/OR USE OF MACOM PRODUCTS INCLUDING LIABILITY OR
WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR
INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR
OTHER INTELLECTUAL PROPERTY RIGHT. MACOM FURTHER DOES NOT WARRANT THE ACCURACY
OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN
THESE MATERIALS. MACOM SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS,
WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.
MACOM products are not intended for use in medical, lifesaving or life sustaining applications. MACOM
customers using or selling MACOM products for use in such applications do so at their own risk and agree to
fully indemnify MACOM for any damages resulting from such improper use or sale.
5
MACOM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
DC-0012239
相关型号：
©2020 ICPDF网 联系我们和版权申明