S1JL Equivalent & Substitute Parts

Part Overview

The S1JL is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 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 reached end-of-life status. Identification of equivalent and substitute parts is necessary for ongoing production support, field repairs, and design transitions to active alternatives that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	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 @ 600 V
Capacitance @ Vr, F	9	pF @ 4V, 1MHz
Package / Case	DO-219AB	Sub SMA
Operating Temperature - Junction	-55 to 175	°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the S1JL are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents (Same Package, Identical Electrical Specifications): Parts that maintain the DO-219AB Sub SMA package and all core electrical parameters (600 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage, 1.8 µs reverse recovery time, 5 µA reverse leakage, 9 pF capacitance) are classified as parametric equivalents. These parts differ only in manufacturing date codes or internal process variations. Parametric equivalents include: S1JL MHG, S1JL MQG, S1JL MTG, S1JL RFG, S1JL RHG, S1JL RQG, S1JL RTG, S1JL RUG, and S1JL RVG. All parametric equivalents carry Active product status.

Functional Equivalent (Different Package, Equivalent Electrical Performance): The S1JLW is a functional equivalent that maintains the same core electrical specifications (600 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage) but uses the SOD-123W surface mount package instead of Sub SMA. This part is suitable for applications where package footprint differences are acceptable. The S1JLW carries Active product status and represents the manufacturer-recommended upgrade path.

Substitution logic is based strictly on the following parameters:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Reverse Recovery Time (trr): 1.8 µs (for parametric equivalents only)
Current - Reverse Leakage @ Vr: 5 µA @ 600 V (for parametric equivalents only)
Capacitance @ Vr, F: 9 pF @ 4V, 1MHz (for parametric equivalents only)
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C to 175°C

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs]	Ir @ Vr [µA]	Package	Inventory [Pcs]
S1JL	Taiwan Semiconductor Corporation	Not For New Designs	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	20200
S1JL MHG	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	749
S1JL MQG	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	875
S1JL MTG	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	1018
S1JL RFG	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	941
S1JL RHG	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	852
S1JL RQG	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	897
S1JL RTG	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	649
S1JL RUG	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	944
S1JL RVG	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	1.8	5 @ 600 V	DO-219AB (Sub SMA)	7700
S1JLW	Taiwan Semiconductor Corporation	Active	600	1	1.1 @ 1 A	Not Specified	1 @ 600 V	SOD-123W	833

Engineering Selection Recommendations

For Direct Replacement (Same Package, Same Footprint): When PCB layout and mechanical constraints require the DO-219AB Sub SMA package, select from the parametric equivalent parts: S1JL MHG, S1JL MQG, S1JL MTG, S1JL RFG, S1JL RHG, S1JL RQG, S1JL RTG, S1JL RUG, or S1JL RVG. All of these parts are Active status and maintain identical electrical specifications to the S1JL. Selection among these parametric equivalents may be based on inventory availability. S1JL RVG offers the highest inventory level at 7700 pieces.

For New Designs and Long-Term Availability: The S1JLW is the manufacturer-recommended substitute and carries Active product status, ensuring continued availability and support. This part is suitable for applications where the SOD-123W package footprint is compatible with the circuit board design. The S1JLW maintains the same voltage and current ratings as the S1JL. The reduced reverse leakage current (1 µA versus 5 µA) represents an improvement in performance characteristics.

Compliance and Regulatory Considerations: All substitute parts listed are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. All parts operate across the same temperature range (-55°C to 175°C junction temperature). These characteristics ensure compatibility with current manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can S1JL parametric equivalents be used interchangeably on the same PCB? A: Yes. Parts such as S1JL MHG, S1JL MQG, S1JL MTG, S1JL RFG, S1JL RHG, S1JL RQG, S1JL RTG, S1JL RUG, and S1JL RVG share identical electrical specifications and the same DO-219AB Sub SMA package. They are direct mechanical and electrical substitutes and require no circuit modifications.

Q: What is the difference between S1JL and S1JLW? A: The primary difference is the package type. The S1JL uses the DO-219AB Sub SMA package, while the S1JLW uses the SOD-123W package. Both maintain 600 V reverse voltage and 1 A average rectified current ratings. The S1JLW has lower reverse leakage current (1 µA versus 5 µA). PCB layout modifications are required to accommodate the different package footprint.

Q: Why is the S1JL marked "Not For New Designs"? A: The S1JL has reached end-of-life status. Taiwan Semiconductor Corporation recommends using Active alternatives such as S1JLW or the parametric equivalents (S1JL MHG, S1JL MQG, S1JL MTG, S1JL RFG, S1JL RHG, S1JL RQG, S1JL RTG, S1JL RUG, S1JL RVG) for new product development to ensure long-term supply continuity.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the operating temperature range for these diodes? A: All parts, including the S1JL and all substitutes, operate across a junction temperature range of -55°C to 175°C.

Q: Which substitute part has the highest inventory availability? A: S1JL RVG has the highest inventory level at 7700 pieces, followed by S1JL MTG at 1018 pieces.

Q: Can the S1JLW be used as a drop-in replacement without PCB modifications? A: No. The S1JLW uses the SOD-123W package, which has a different footprint than the S1JL's DO-219AB Sub SMA package. PCB layout modifications are required. For true drop-in replacement without PCB changes, use parametric equivalents such as S1JL RVG.

Q: What parameters determine substitution eligibility? A: Substitution is determined by matching the following parameters: Voltage - DC Reverse (Vr) (Max) of 600 V, Current - Average Rectified (Io) of 1 A, Voltage - Forward (Vf) (Max) @ If of 1.1 V @ 1 A, and for parametric equivalents, Reverse Recovery Time (trr) of 1.8 µs, Current - Reverse Leakage @ Vr of 5 µA @ 600 V, and Capacitance @ Vr, F of 9 pF @ 4V, 1MHz. Package type and mounting method must also be compatible with the application.

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