Planar Back (Tunnel) Diodes

Rev. V2

MBDxx57-x Series

1

1

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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 +110°C.

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

Peak

Current

Sensitivity

(γ)

Video

Resistance

Reverse

Voltage (

Forward

Voltage

100 MHz

(pF)

(µA)

(mV / mW)

(Ω)

(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.