AXIAL PIN Diodes 46

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Part RoHS Manufacturer Diode Type Terminal Position Terminal Form No. of Terminals Surface Mount Package Shape Package Body Material Diode Resistive Test Current Config Frequency Band Maximum Forward Voltage (VF) Maximum Diode Capacitance Technology Maximum Reverse Current No. of Elements Reverse Test Voltage Package Style (Meter) Sub-Category Maximum Repetitive Peak Reverse Voltage Maximum Operating Temperature Application Minimum Operating Temperature Terminal Finish JESD-30 Code Maximum Diode Forward Resistance Moisture Sensitivity Level (MSL) Case Connection Qualification Maximum Power Dissipation Nominal Diode Capacitance Additional Features Nominal Minority Carrier Lifetime JEDEC-95 Code Minimum Breakdown Voltage Maximum Non Repetitive Peak Forward Current JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Diode Element Material Diode Resistive Test Frequency Reference Standard

UM6601B

Microchip Technology

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

UNSPECIFIED

100 mA

SINGLE

ULTRA HIGH FREQUENCY

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

100 V

LONG FORM

PIN Diodes

175 Cel

ATTENUATOR; SWITCHING

-65 Cel

TIN LEAD

O-XALF-W2

2.5 ohm

ISOLATED

Not Qualified

2.5 W

.4 pF

1 us

100 V

e0

SILICON

100 MHz

UM6610B

Microchip Technology

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

UNSPECIFIED

100 mA

SINGLE

ULTRA HIGH FREQUENCY

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

100 V

LONG FORM

PIN Diodes

175 Cel

ATTENUATOR; SWITCHING

-65 Cel

TIN LEAD

O-XALF-W2

2.5 ohm

ISOLATED

Not Qualified

2.5 W

.4 pF

1 us

1000 V

e0

SILICON

100 MHz

UM9415

Microchip Technology

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

50 mA

SINGLE

4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

175 Cel

SWITCHING

-65 Cel

TIN LEAD

O-LALF-W2

1 ohm

ISOLATED

Not Qualified

2.5 W

4 pF

LOW DISTORTION

5 us

50 V

e0

SILICON

100 MHz

UM9415B

Microchip Technology

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

UNSPECIFIED

50 mA

SINGLE

HIGH FREQUENCY TO ULTRA HIGH FREQUENCY

4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

0 V

LONG FORM

PIN Diodes

SWITCHING

TIN LEAD

O-XALF-W2

1 ohm

ISOLATED

Not Qualified

2.5 W

4 pF

LOW DISTORTION

5 us

50 V

e0

SILICON

100 MHz

UM4001B

Microchip Technology

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

UNSPECIFIED

100 mA

SINGLE

HIGH FREQUENCY TO S BAND

3 pF

POSITIVE-INTRINSIC-NEGATIVE

1

100 V

LONG FORM

PIN Diodes

ATTENUATOR; SWITCHING

TIN LEAD

O-XALF-W2

.5 ohm

ISOLATED

Not Qualified

2.5 W

2.4 pF

LOW DISTORTION

10 us

e0

SILICON

100 MHz

5082-3080

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

2.5 ohm

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

1.3 us

100 V

e0

SILICON

100 MHz

5082-3081

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

-65 Cel

TIN LEAD

O-LALF-W2

3.5 ohm

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

2.5 us

100 V

e0

SILICON

100 MHz

UM9441

Microchip Technology

PIN DIODE

AXIAL

WIRE

2

NO

ELLIPTICAL

UNSPECIFIED

SINGLE

MEDIUM FREQUENCY

10 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

175 Cel

-55 Cel

TIN LEAD

E-XALF-W2

ISOLATED

Not Qualified

HIGH RELIABILITY

2 us

100 V

e0

SILICON

BAQ800

NXP Semiconductors

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

LOW FREQUENCY

12 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

LOW LEAKAGE, LOW DISTORTION

20 us

SILICON

BAQ800T/R

NXP Semiconductors

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

LOW FREQUENCY

12 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

LOW LEAKAGE, LOW DISTORTION

20 us

SILICON

934050600133

NXP Semiconductors

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

LOW FREQUENCY

6 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

25 us

SILICON

934050600113

NXP Semiconductors

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

LOW FREQUENCY

6 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

25 us

SILICON

1SV121TE

Renesas Electronics

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

HIGH FREQUENCY

.7 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

.25 W

HIGH RELIABILITY

DO-34

100 V

SILICON

1SV121TD

Renesas Electronics

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

HIGH FREQUENCY

.7 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

.25 W

HIGH RELIABILITY

DO-34

100 V

SILICON

1SV121TAX

Renesas Electronics

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

HIGH FREQUENCY

.7 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

.25 W

HIGH RELIABILITY

DO-34

100 V

SILICON

1SV121TDX

Renesas Electronics

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

HIGH FREQUENCY

.7 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

.25 W

HIGH RELIABILITY

DO-34

100 V

SILICON

1SV121RX

Renesas Electronics

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

HIGH FREQUENCY

.7 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

.25 W

HIGH RELIABILITY

DO-34

100 V

SILICON

1SV121RY

Renesas Electronics

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

HIGH FREQUENCY

.7 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

.25 W

HIGH RELIABILITY

DO-34

100 V

SILICON

1SV121TA

Renesas Electronics

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

HIGH FREQUENCY

.7 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR

O-LALF-W2

10 ohm

ISOLATED

Not Qualified

.25 W

HIGH RELIABILITY

DO-34

100 V

SILICON

5082-3080#T50

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

2.5 ohm

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

1.3 us

100 V

e0

SILICON

100 MHz

5082-3188#T25

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

10 mA

SINGLE

VERY HIGH FREQUENCY TO ULTRA HIGH FREQUENCY

1 pF

POSITIVE-INTRINSIC-NEGATIVE

1

20 V

LONG FORM

PIN Diodes

150 Cel

SWITCHING

O-LALF-W2

.6 ohm

ISOLATED

Not Qualified

.25 W

1 pF

LOW HARMONIC DISTORTION

.07 us

35 V

SILICON

100 MHz

5082-3039

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.25 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1.25 ohm

1

ISOLATED

Not Qualified

.25 W

.25 pF

LOW HARMONIC DISTORTION

.1 us

150 V

e0

SILICON

100 MHz

5082-3188#T50

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

10 mA

SINGLE

VERY HIGH FREQUENCY TO ULTRA HIGH FREQUENCY

1 pF

POSITIVE-INTRINSIC-NEGATIVE

1

20 V

LONG FORM

PIN Diodes

150 Cel

SWITCHING

O-LALF-W2

.6 ohm

ISOLATED

Not Qualified

.25 W

1 pF

LOW HARMONIC DISTORTION

.07 us

35 V

SILICON

100 MHz

1N5767#T25

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

2.5 ohm

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

1.3 us

100 V

e0

SILICON

100 MHz

5082-3039#T25

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.25 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1.25 ohm

1

ISOLATED

Not Qualified

.25 W

.25 pF

LOW HARMONIC DISTORTION

.1 us

150 V

e0

SILICON

100 MHz

5082-3001#T25

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.25 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

O-LALF-W2

1 ohm

ISOLATED

Not Qualified

.25 W

.25 pF

LOW HARMONIC DISTORTION

.1 us

200 V

SILICON

100 MHz

5082-3379#T50

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

1.3 us

50 V

e0

SILICON

5082-3077#T50

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.3 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1.5 ohm

1

ISOLATED

Not Qualified

.25 W

.3 pF

LOW HARMONIC DISTORTION

.1 us

200 V

e0

SILICON

100 MHz

HPND-4166

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

.3 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

150 Cel

ATTENUATOR

-65 Cel

O-LALF-W2

1.5 ohm

ISOLATED

Not Qualified

.25 W

.1 us

100 V

SILICON

1N5767

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

-65 Cel

TIN LEAD

O-LALF-W2

2.5 ohm

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

1.3 us

100 V

e0

SILICON

100 MHz

5082-3379#T25

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

1.3 us

50 V

e0

SILICON

HPND-4166G

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

.3 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

150 Cel

ATTENUATOR

-65 Cel

O-LALF-W2

1.5 ohm

ISOLATED

Not Qualified

.25 W

.1 us

100 V

SILICON

5082-3077

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.3 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1.5 ohm

1

ISOLATED

Not Qualified

.25 W

.3 pF

LOW HARMONIC DISTORTION

.1 us

200 V

e0

SILICON

100 MHz

5082-3081#T25

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

3.5 ohm

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

2.5 us

100 V

e0

SILICON

100 MHz

5082-3080#T25

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

2.5 ohm

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

1.3 us

100 V

e0

SILICON

100 MHz

5082-3379

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

8 ohm

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

1.3 us

50 V

e0

SILICON

100 MHz

5082-3081#T50

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

3.5 ohm

1

ISOLATED

Not Qualified

.25 W

.4 pF

LOW HARMONIC DISTORTION

2.5 us

100 V

e0

SILICON

100 MHz

5082-3188

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

10 mA

SINGLE

VERY HIGH FREQUENCY TO ULTRA HIGH FREQUENCY

1 pF

POSITIVE-INTRINSIC-NEGATIVE

1

20 V

LONG FORM

PIN Diodes

150 Cel

SWITCHING

-65 Cel

TIN LEAD

O-LALF-W2

.6 ohm

ISOLATED

Not Qualified

.25 W

1 pF

LOW HARMONIC DISTORTION

.07 us

35 V

e0

SILICON

100 MHz

5082-3001#T50

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.25 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

O-LALF-W2

1 ohm

ISOLATED

Not Qualified

.25 W

.25 pF

LOW HARMONIC DISTORTION

.1 us

200 V

SILICON

100 MHz

1N5719

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.3 pF

POSITIVE-INTRINSIC-NEGATIVE

1

100 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

-65 Cel

TIN LEAD

O-LALF-W2

1.25 ohm

1

ISOLATED

Not Qualified

.25 W

.25 pF

LOW HARMONIC DISTORTION

.1 us

150 V

e0

SILICON

100 MHz

5082-3077#T25

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.3 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1.5 ohm

1

ISOLATED

Not Qualified

.25 W

.3 pF

LOW HARMONIC DISTORTION

.1 us

200 V

e0

SILICON

100 MHz

1N5719#T50

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.3 pF

POSITIVE-INTRINSIC-NEGATIVE

1

100 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1.25 ohm

1

ISOLATED

Not Qualified

.25 W

.3 pF

LOW HARMONIC DISTORTION

.1 us

150 V

e0

SILICON

100 MHz

5082-3039#T50

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.25 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1.25 ohm

1

ISOLATED

Not Qualified

.25 W

.25 pF

LOW HARMONIC DISTORTION

.1 us

150 V

e0

SILICON

100 MHz

1N5719#T25

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.3 pF

POSITIVE-INTRINSIC-NEGATIVE

1

100 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1.25 ohm

1

ISOLATED

Not Qualified

.25 W

.3 pF

LOW HARMONIC DISTORTION

.1 us

150 V

e0

SILICON

100 MHz

1N5767#T50

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

SINGLE

.4 pF

POSITIVE-INTRINSIC-NEGATIVE

1

LONG FORM

ATTENUATOR; SWITCHING

O-LALF-W2

2.5 ohm

ISOLATED

Not Qualified

.25 W

LOW HARMONIC DISTORTION

1.3 us

100 V

SILICON

5082-3001

Broadcom

PIN DIODE

AXIAL

WIRE

2

NO

ROUND

GLASS

100 mA

SINGLE

.25 pF

POSITIVE-INTRINSIC-NEGATIVE

1

50 V

LONG FORM

PIN Diodes

150 Cel

ATTENUATOR; SWITCHING

TIN LEAD

O-LALF-W2

1 ohm

ISOLATED

Not Qualified

.25 W

.25 pF

LOW HARMONIC DISTORTION

.1 us

200 V

e0

SILICON

100 MHz

PIN Diodes

PIN diodes are electronic components that are used in microwave and radio frequency applications as switches or attenuators. They are named after their structure, which consists of a P-type layer, an intrinsic layer, and an N-type layer.

PIN diodes operate based on the properties of their intrinsic layer, which has a low doping density, making it highly resistive. When a forward-bias voltage is applied to the diode, the intrinsic layer becomes less resistive, allowing current to flow through the diode. When a reverse-bias voltage is applied to the diode, the intrinsic layer becomes highly resistive, acting as an open switch or attenuator for microwave and radio frequency signals.

PIN diodes offer several advantages over other types of switches and attenuators, such as low insertion loss, high isolation, and fast switching speed. They can be used in various applications, such as radio frequency amplifiers, attenuators, switches, and phase shifters.

PIN diodes come in different package sizes and configurations, depending on the application and the required performance. They can be integrated into a circuit board or mounted in a separate enclosure, depending on the application and the space available.