DG405DJ Equivalent & Substitute Parts

Part Overview

The DG405DJ is a 2-circuit IC switch with DPST-NO configuration and 45Ohm on-state resistance, manufactured by Vishay Siliconix in a 16-DIP package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The DG405DJ operates across single supply (13V–36V) and dual supply (±7V–22V) ranges, making it suitable for analog switching applications requiring low on-state resistance and fast switching times.

Key Parameters

Parameter	Value
Switch Circuit Type	DPST - NO
Multiplexer/Demultiplexer Configuration	2:1
Number of Circuits	2
On-State Resistance (Max)	45Ohm
Voltage - Supply, Single (V+)	13V ~ 36V
Voltage - Supply, Dual (V±)	±7V ~ 22V
Switch Time (Ton, Toff) (Max)	150ns, 100ns
Charge Injection	60pC
Channel Capacitance (CS(off), CD(off))	12pF, 12pF
Current - Leakage (IS(off)) (Max)	500pA
Crosstalk	-90dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-DIP (0.300", 7.62mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the DG405DJ is determined by the following critical parameters:

Switch Circuit Configuration: DPST - NO topology must be maintained
Multiplexer/Demultiplexer Circuit: 2:1 configuration required
Number of Circuits: 2 circuits minimum
On-State Resistance: Maximum 45Ohm (lower values are acceptable as functional improvements)
Package / Case: 16-DIP (0.300", 7.62mm) form factor for mechanical compatibility
Mounting Type: Through Hole compatibility
Supply Voltage Ranges: Single supply 13V–36V and dual supply ±7V–22V (or compatible subsets)
Switching Performance: Ton/Toff specifications of 150ns/100ns or faster
Leakage Current: 500pA maximum specification

Two substitute parts meet these criteria:

DG405DJ-E3 (Vishay Siliconix): Parametric equivalent with identical electrical specifications and active product status
MAX305CPE+ (Analog Devices Inc./Maxim Integrated): Manufacturer-recommended substitute with improved on-state resistance (35Ohm) and lower charge injection (10pC)

Parameter Comparison

Parameter	DG405DJ	DG405DJ-E3	MAX305CPE+
Manufacturer	Vishay Siliconix	Vishay Siliconix	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active	Active
Switch Circuit	DPST - NO	DPST - NO	DPST - NO
Multiplexer/Demultiplexer Circuit	2:1	2:1	2:1
Number of Circuits	2	2	2
On-State Resistance (Max)	45Ohm	45Ohm	35Ohm
Voltage - Supply, Single (V+)	13V ~ 36V	13V ~ 36V	10V ~ 30V
Voltage - Supply, Dual (V±)	±7V ~ 22V	±7V ~ 22V	±4.5V ~ 20V
Switch Time (Ton, Toff) (Max)	150ns, 100ns	150ns, 100ns	150ns, 100ns
Charge Injection	60pC	60pC	10pC
Channel Capacitance (CS(off), CD(off))	12pF, 12pF	12pF, 12pF	12pF, 12pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA
Crosstalk	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	0°C ~ 70°C (TA)
Package / Case	16-DIP (0.300", 7.62mm)	16-DIP (0.300", 7.62mm)	16-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

DG405DJ-E3 is the direct parametric equivalent, offering identical electrical specifications with the advantage of active product status and ROHS3 compliance. This part is suitable for applications requiring exact performance matching to the original DG405DJ design without modification.

MAX305CPE+ is the manufacturer-recommended substitute, providing improved electrical characteristics including lower on-state resistance (35Ohm vs. 45Ohm) and significantly reduced charge injection (10pC vs. 60pC). This part is suitable for new designs or redesigns where enhanced performance is beneficial. Note that the MAX305CPE+ operates within a narrower temperature range (0°C–70°C vs. -40°C–85°C) and reduced supply voltage ranges; applications requiring the full -40°C to 85°C operating window or extended supply voltage ranges must remain on the DG405DJ-E3 or original DG405DJ.

Both substitute parts are ROHS3 compliant and REACH unaffected, supporting modern procurement and environmental compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the DG405DJ-E3 be used as a direct replacement for the DG405DJ?

A: Yes. The DG405DJ-E3 is a parametric equivalent with identical electrical specifications, package, and mounting type. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What are the key differences between DG405DJ-E3 and MAX305CPE+?

A: Both parts share the same 2:1 DPST-NO switch configuration and 16-DIP package. The MAX305CPE+ offers lower on-state resistance (35Ohm vs. 45Ohm) and reduced charge injection (10pC vs. 60pC). However, the MAX305CPE+ has a narrower operating temperature range (0°C–70°C vs. -40°C–85°C) and reduced supply voltage ranges (10V–30V single supply vs. 13V–36V, and ±4.5V–20V dual supply vs. ±7V–22V).

Q: Is the MAX305CPE+ suitable for applications requiring -40°C operation?

A: No. The MAX305CPE+ is rated for 0°C–70°C operation only. Applications requiring -40°C minimum operating temperature must use the DG405DJ or DG405DJ-E3.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 16-DIP (0.300", 7.62mm) package with through-hole mounting, ensuring mechanical and electrical pin compatibility.

Q: What is the significance of the RoHS compliance difference?

A: The DG405DJ is RoHS non-compliant, while DG405DJ-E3 and MAX305CPE+ are ROHS3 compliant. For applications subject to RoHS regulations or procurement policies requiring RoHS compliance, the DG405DJ-E3 or MAX305CPE+ must be selected.

Q: Can the MAX305CPE+ be used in applications designed for the full -40°C to 85°C temperature range?

A: No. The MAX305CPE+ is rated only to 0°C–70°C. Applications requiring the full -40°C to 85°C operating window must use the DG405DJ-E3.

Q: What supply voltage ranges are supported by each part?

A: DG405DJ and DG405DJ-E3 support 13V–36V single supply and ±7V–22V dual supply. MAX305CPE+ supports 10V–30V single supply and ±4.5V–20V dual supply. Applications requiring supply voltages above 30V (single) or ±20V (dual) must use the DG405DJ or DG405DJ-E3.

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