S1GL Equivalent & Substitute Parts

Part Overview

The S1GL is a general-purpose rectifier diode rated for 400 V DC reverse voltage and 1 A average rectified current in a Sub SMA surface mount package (DO-219AB). This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product roadmap. For applications requiring continued support, active equivalent parts with identical electrical specifications are available as direct substitutes.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1 A	V
Reverse Recovery Time (trr)	1.8	µs
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Capacitance @ Vr, F	9	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 175	°C
Package / Case	DO-219AB	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the S1GL is determined by the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Reverse Recovery Time (trr): 1.8 µs
Current - Reverse Leakage @ Vr: 5 µA @ 400 V
Operating Temperature - Junction: -55°C to 175°C

Mechanical Equivalence Criteria:

Mounting Type: Surface Mount
Package / Case: DO-219AB (Sub SMA)

Compliance Criteria:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories:

Category 1: Parametric Equivalents (Same Package - DO-219AB Sub SMA) Parts S1GL M2G, S1GL MHG, S1GL MTG, S1GL RFG, S1GL RHG, S1GL RQG, S1GL RTG, and S1GL RUG maintain identical electrical and mechanical specifications with active product status. These parts are direct replacements with no design modifications required.

Category 2: Package Variant (Different Package - SOD-123W) Part S1GLW provides electrical equivalence with modified package geometry (SOD-123W instead of DO-219AB). This substitute requires PCB layout and footprint redesign but maintains all critical electrical parameters.

Parameter Comparison

Parameter	S1GL	S1GL M2G	S1GL MHG	S1GL MTG	S1GL RFG	S1GL RHG	S1GL RQG	S1GL RTG	S1GL RUG	S1GLW
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A
Reverse Recovery Time (trr)	1.8 µs	1.8 µs	1.8 µs	1.8 µs	1.8 µs	1.8 µs	1.8 µs	1.8 µs	1.8 µs	Not Specified
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	1 µA @ 400 V
Capacitance @ Vr, F	9 pF @ 4V, 1MHz	9 pF @ 4V, 1MHz	9 pF @ 4V, 1MHz	9 pF @ 4V, 1MHz	9 pF @ 4V, 1MHz	9 pF @ 4V, 1MHz	9 pF @ 4V, 1MHz	9 pF @ 4V, 1MHz	9 pF @ 4V, 1MHz	Not Specified
Operating Temperature - Junction	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	SOD-123W
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Not For New Designs	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (No PCB Redesign Required):

Select from the active parametric equivalents: S1GL M2G, S1GL MHG, S1GL MTG, S1GL RFG, S1GL RHG, S1GL RQG, S1GL RTG, or S1GL RUG. All maintain identical electrical specifications, mechanical package geometry (DO-219AB Sub SMA), and compliance certifications. These parts are suitable for both new designs and legacy system support. Selection among these variants may be based on inventory availability and supplier lead times.

For Package Variant Substitution:

The S1GLW provides electrical equivalence with a different surface mount package (SOD-123W). This option requires PCB layout modification and footprint redesign. The S1GLW exhibits improved reverse leakage characteristics (1 µA versus 5 µA at 400 V), which may provide performance benefits in low-leakage applications. The S1GLW is classified as Active product status, ensuring long-term availability and manufacturing support.

Compliance Verification:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage processes. REACH status remains unaffected across all variants.

Frequently Asked Questions (FAQ)

Q: Can S1GL M2G, S1GL MHG, S1GL MTG, S1GL RFG, S1GL RHG, S1GL RQG, S1GL RTG, and S1GL RUG be used interchangeably with S1GL?

A: Yes. These parts are parametric equivalents with identical electrical specifications (400 V, 1 A, 1.1 V forward voltage, 1.8 µs reverse recovery time) and mechanical package (DO-219AB Sub SMA). They require no PCB modifications and are direct pin-for-pin replacements.

Q: What is the difference between S1GL and S1GLW?

A: The primary difference is package geometry. S1GL uses DO-219AB (Sub SMA), while S1GLW uses SOD-123W. Both maintain 400 V, 1 A electrical ratings and -55°C to 175°C operating temperature. S1GLW exhibits lower reverse leakage (1 µA versus 5 µA at 400 V). PCB layout and footprint redesign is required for S1GLW substitution.

Q: Why is S1GL marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's product portfolio. Active equivalent parts with identical specifications are available. For new designs, select from the active variants (S1GL M2G, S1GL MHG, S1GL MTG, S1GL RFG, S1GL RHG, S1GL RQG, S1GL RTG, S1GL RUG, or S1GLW).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) rating, ensuring compatibility with standard manufacturing processes and environmental regulations.

Q: Which substitute part should I select for inventory planning?

A: For applications requiring the DO-219AB Sub SMA package without PCB redesign, any of the active parametric equivalents (S1GL M2G, S1GL MHG, S1GL MTG, S1GL RFG, S1GL RHG, S1GL RQG, S1GL RTG, S1GL RUG) are suitable. Selection may be based on supplier availability and lead times. For new designs where package flexibility exists, S1GLW offers improved reverse leakage performance with SOD-123W package geometry.

Q: Does reverse recovery time differ among the substitute parts?

A: No. All parametric equivalents maintain 1.8 µs reverse recovery time. S1GLW does not specify this parameter in the provided data.

Q: Can S1GLW be used in existing S1GL PCB layouts?

A: No. S1GLW uses SOD-123W package geometry, which differs from the DO-219AB Sub SMA footprint of S1GL. PCB layout and component footprint redesign is required for S1GLW substitution.

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