planar back (tunnel) diodes rev. v2 mbdxx57 - x series 1 1 macom technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information co ntained 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 1 features ? zero bias operation ? low video impedance ? excellent temperature stability ? screening per mil - prf - 19500 and mil - prf - 35834 available ? rohs* compliant description the mbd series of back (tunnel) diodes are fabricated on germanium substrates using passivated, planar construction and gold metallization for reliable operation up to +110c. unlike the standard tunnel diode ip is minimized for detector operation and offered in five nominal values with varying degrees of sensitivity and video impedance. the back detector is generally operated with zero bias and is known for its excellent temperature stability and fast video rise times part number junction capacitance (c j ) peak current (i p ) sensitivity ( ) video resistance (r v ) reverse voltage ( v r ) forward voltage (v f ) v r = v v , 100 mhz p in = - 20 dbm, r l = 10 k , 10 ghz i r = 500 a i f = 3 ma (pf) (a) (mv / mw) ( ) (mv) (mv) max. min. max. typ. typ. min. max. mbd1057 - c18 0.30 100 200 1000 180 420 135 mbd2057 - c18 0.30 200 300 750 130 410 130 MBD3057 - c18 0.30 300 400 500 80 400 125 mbd4057 - c18 0.30 400 500 275 65 400 120 mbd5057 - c18 0.30 500 600 250 60 400 110 * restrictions on hazardous substances, european union directive 2011/65/eu. die electrical specifications: t a = +25c, peak / valley current = 2.5 a
planar back (tunnel) diodes rev. v2 mbdxx57 - x series 2 2 macom technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information co ntained 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 2 base part number 1 package style total capacitance (c t ) peak current (i p ) sensitivity ( ) video resistance (r v ) reverse voltage (v r ) forward voltage (v f ) v r = v v , 100 mhz p in = - 20 dbm, r l = 10 k , 10 ghz i r = 500 a i f = 3 ma (pf) (a) (mv / mw) ( ) (mv) (mv) max. min. max. typ. typ. min. max. mbd1057 e28 / 28x 0.40 100 200 1000 180 420 135 h20 0.50 t54 0.55 t80 0.65 mbd2057 e28 / 28x 0.40 200 300 750 130 410 130 h20 0.50 t54 0.55 t80 0.65 MBD3057 e28 / 28x 0.45 300 400 500 80 400 125 h20 0.55 t54 0.60 t80 0.70 mbd4057 e28 / 28x 0.50 400 500 275 65 400 120 h20 0.60 t54 0.65 t80 0.75 mbd5057 e28 / 28x 0.55 500 600 250 60 400 110 h20 0.65 t54 0.70 t80 0.80 package electrical specifications: t a = +25c, peak / valley current = 2.5 a 1. to order enter base part number - package style. absolute maximum ratings parameter absolute maximum input power 14 dbm cw or pulsed in a tuned detector operating temperature - 65c to +110c storage temperature - 65c to +125c soldering temperature: die packaged see chip assembly instructions +230c for 5 seconds (must be hand soldered)
planar back (tunnel) diodes rev. v2 mbdxx57 - x series 3 3 macom technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information co ntained 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 3 back diode parameters diode equivalent circuit 10 ghz rf detector test circuit the germanium planar back (tunnel) diode is sensitive to mechanical pressure and high temperatures. die attach: conductive epoxy only with maximum curing temperature of +125c wire bond: 0.7 mil gold wire and thermo - compression wedge bond within the following: stage temperature: +155c maximum for 20 seconds max tip temperature: +160c maximum bonding pressure: 20 grams maximum bonding is performed on the larger diameter offset bonding pad (see figure 1) and not over the junction. die assembly
planar back (tunnel) diodes rev. v2 mbdxx57 - x series 4 4 macom technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information co ntained 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 4 typical performance curves video resistance vs. input power video impedance & sensitivity vs. peak current output power vs. input power
planar back (tunnel) diodes rev. v2 mbdxx57 - x series 5 5 macom technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information co ntained 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 5 typical performance curves: mdb2057 output voltage vs. temperature output voltage vs. input power
planar back (tunnel) diodes rev. v2 mbdxx57 - x series 6 6 macom technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information co ntained 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 6 typical performance curves: mdb5057 output voltage vs. temperature output voltage vs. input power
planar back (tunnel) diodes rev. v2 mbdxx57 - x series 7 7 macom technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information co ntained 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 7 outline drawings
planar back (tunnel) diodes rev. v2 mbdxx57 - x series 8 8 macom technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information co ntained 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 8 outline drawings (continued)
planar back (tunnel) diodes rev. v2 mbdxx57 - x series 9 9 macom technology solutions inc. (macom) and its affiliates reserve the right to make changes to the product(s) or information co ntained 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 9 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.
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