70G-IDC15G AC/DC Input Module - Equivalent & Substitute Parts

Part Overview

The 70G-IDC15G is an AC/DC input module manufactured by Grayhill Inc., designed to convert AC/DC supply voltages in the 35–60V range to a regulated 15VDC output at 10mA. This module features hold-down screw mounting, status LED indication, and is housed in a G5 style white enclosure. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar input/output characteristics.

Substiute Parts

70G-IDC15G

Grayhill Inc.In Stock: 118170G-IDC15G Datasheet

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70G-IDC15NP

Grayhill Inc.In Stock: 112370G-IDC15NP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 70G-IDC15G requires identification of AC/DC input modules within the Grayhill 70 series that maintain electrical and mechanical compatibility. The critical parameters governing substitution are:

Output Specifications (Non-Negotiable):

• Voltage output: 15VDC (fixed requirement)
• Current output: 10mA (fixed requirement)

Input Specifications (Substitution Constraint):

• The 70G-IDC15G accepts 35–60VAC/DC input. Substitute parts must operate within input voltage ranges that either match or encompass this specification, or operate within a defined subset of this range for applications with fixed supply voltages.

Mechanical & Functional Compatibility:

• Style G5 form factor with hold-down screw mounting
• Status LED indication
• White color housing

Regulatory & Environmental:

• RoHS compliance required
• MSL 1 rating (unlimited moisture sensitivity)

The 70G-IDC15NP is identified as a substitute candidate based on matching output specifications (15VDC, 10mA), identical form factor (G5 style, white, hold-down screw), and equivalent regulatory status. However, the input voltage range differs: 15–32VAC and 10–32VDC. This substitute is applicable only in applications where the supply voltage falls within the 15–32V range.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (70G-IDC15NP):

The 70G-IDC15NP is suitable as a substitute for the 70G-IDC15G in applications where the input supply voltage is constrained to the 15–32V range (15–32VAC or 10–32VDC). Both modules deliver identical output specifications (15VDC, 10mA) and share mechanical compatibility (G5 style, hold-down screw, status LED). The 70G-IDC15NP is currently in active production status, ensuring availability and supply chain continuity.

Key Differences Requiring Evaluation:

1. Input Voltage Range: The 70G-IDC15NP operates at lower input voltages (15–32V) compared to the 70G-IDC15G (35–60V). Applications with supply voltages above 32V cannot use the 70G-IDC15NP without external voltage regulation.

2. Input Current: The 70G-IDC15NP draws 18mA input current versus 6mA for the 70G-IDC15G. Power supply and circuit design must accommodate this increased input current draw.

3. Response Time: The 70G-IDC15NP exhibits faster turn-on and turn-off times (5ms each) compared to the 70G-IDC15G (10ms each). This may affect timing-sensitive applications.

Regulatory Compliance:

Both modules are RoHS compliant, REACH unaffected, and carry MSL 1 rating. No regulatory barriers exist to substitution within the specified input voltage constraints.

Frequently Asked Questions (FAQ)

Q1: Can the 70G-IDC15NP replace the 70G-IDC15G in all applications?

No. The 70G-IDC15NP is limited to input voltages of 15–32VAC or 10–32VDC. Applications requiring input voltages above 32V must retain the 70G-IDC15G or implement external voltage regulation upstream of the 70G-IDC15NP.

Q2: What is the impact of the increased input current (18mA vs. 6mA) on system design?

The 70G-IDC15NP draws three times the input current of the 70G-IDC15G. Power supply capacity, wiring gauge, and thermal management must be re-evaluated to accommodate this higher current draw. Ensure the supply source can deliver 18mA continuously without voltage sag.

Q3: Are the mechanical mounting and form factors identical?

Yes. Both modules use G5 style housing with hold-down screw mounting, white color, and status LED indication. No mechanical redesign is required for form factor compatibility.

Q4: Does the faster response time (5ms vs. 10ms) affect compatibility?

The 70G-IDC15NP's faster response time is generally beneficial for system performance. However, applications with timing-dependent circuits designed around the 10ms response of the 70G-IDC15G should be reviewed to confirm that faster switching does not introduce unintended behavior.

Q5: Are both modules RoHS compliant?

Yes. Both the 70G-IDC15G and 70G-IDC15NP are RoHS compliant with MSL 1 rating and REACH unaffected status. No regulatory compliance issues exist for substitution.

Q6: Why is the 70G-IDC15G classified as obsolete?

The 70G-IDC15G is no longer in active production. The 70G-IDC15NP represents the current active alternative within the Grayhill 70 series for applications within its specified input voltage range.