S1J-13 Equivalent & Substitute Parts

Part Overview

The S1J-13 is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 600 V DC reverse voltage and 1 A average rectified current in a surface mount SMA package. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing production and repair applications. Substitute parts must maintain electrical performance within the specified voltage, current, and thermal operating ranges while accommodating different packaging and recovery speed characteristics.

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	V @ 1 A
Reverse Recovery Time (trr)	3	µs
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Operating Temperature - Junction	-65 to 150	°C
Package / Case	DO-214AC, SMA
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution of the S1J-13 is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 1 A
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Up to 1.7 V @ 1 A (original: 1.1 V)
Reverse Recovery Time (trr): 35 ns to 3 µs (original: 3 µs)
Current - Reverse Leakage @ Vr: 5 to 10 µA @ 600 V (original: 5 µA)
Operating Temperature - Junction: -55°C to 175°C (original: -65°C to 150°C)

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications) and Manufacturer Recommended Alternatives (functionally compatible with allowable parameter variations).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ 1A (V)	trr (µs/ns)	Ir @ 600V (µA)	Tj (°C)	Product Status	RoHS Status
S1J-13	Diodes Incorporated	600	1	1.1	3 µs	5	-65 to 150	Discontinued	Non-compliant
S1J-13-F	Diodes Incorporated	600	1	1.1	3 µs	5	-65 to 150	Active	ROHS3 Compliant
CSFA105-G	Comchip Technology	600	1	1.5	35 ns	5	-55 to 150	Active	ROHS3 Compliant
ES1J	HY Electronic (Cayman) Limited	600	1	1.7	35 ns	5	-55 to 150	Active	RoHS Compliant
ES1J-LTP	Micro Commercial Co	600	1	1.7	35 ns	5	-65 to 175	Active	ROHS3 Compliant
GF1J	onsemi	600	1	1.0	2 µs	5	-65 to 175	Not For New Designs	ROHS3 Compliant
GS1J-LTP	Micro Commercial Co	600	1	1.0	>500ns	10	-55 to 150	Active	ROHS3 Compliant
MRA4005T1G	onsemi	600	1	1.1	>500ns	10	-55 to 175	Not For New Designs	ROHS3 Compliant
MRA4005T3G	onsemi	600	1	1.1	>500ns	10	-55 to 175	Not For New Designs	ROHS3 Compliant
RS1J-E3/5AT	Vishay General Semiconductor - Diodes Division	600	1	1.3	250 ns	5	-55 to 150	Active	ROHS3 Compliant
RS1J-E3/61T	Vishay General Semiconductor - Diodes Division	600	1	1.3	250 ns	5	-55 to 150	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute (Parametric Equivalent):

The S1J-13-F is the direct parametric equivalent to the S1J-13. This part maintains identical electrical specifications including 600 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage drop, and 3 µs reverse recovery time. The S1J-13-F differs only in product status (Active versus Discontinued) and RoHS compliance (ROHS3 Compliant versus Non-compliant). This part is the preferred replacement for direct substitution in existing designs.

Secondary Substitutes (Functionally Compatible):

For applications where recovery speed is not critical, the following parts provide functional compatibility:

ES1J-LTP (Micro Commercial Co): Maintains 600 V / 1 A ratings with extended operating temperature range (-65°C to 175°C). Forward voltage increases to 1.7 V and recovery time improves to 35 ns. ROHS3 compliant and actively produced.
RS1J-E3/5AT and RS1J-E3/61T (Vishay): Both maintain 600 V / 1 A ratings with 1.3 V forward voltage and 250 ns recovery time. Actively produced with ROHS3 compliance. Differ in packaging (Tape & Reel versus Cut Tape).
GF1J (onsemi): Provides 600 V / 1 A performance with superior forward voltage (1.0 V) and extended temperature range (-65°C to 175°C). Marked "Not For New Designs" but available for legacy support.

Not Recommended for New Designs:

Parts marked "Not For New Designs" (GF1J, MRA4005T1G, MRA4005T3G) are suitable only for replacement in existing applications. These parts are retained in inventory for legacy system support but should not be selected for new product development.

Frequently Asked Questions (FAQ)

Q: Can S1J-13-F be used as a direct replacement for S1J-13?

A: Yes. The S1J-13-F is a parametric equivalent with identical electrical specifications. The only differences are product status (Active versus Discontinued) and RoHS compliance (ROHS3 Compliant). No circuit modifications are required.

Q: What is the difference between standard recovery and fast recovery diodes in this group?

A: Standard recovery diodes (S1J-13, S1J-13-F, GF1J, GS1J-LTP, MRA4005T1G, MRA4005T3G) have reverse recovery times greater than 500 ns or specified in microseconds. Fast recovery diodes (CSFA105-G, ES1J, ES1J-LTP, RS1J-E3/5AT, RS1J-E3/61T) have reverse recovery times of 35 ns to 250 ns. Fast recovery types are suitable for higher-frequency switching applications.

Q: Are all substitute parts available in the same SMA package?

A: Yes. All listed substitute parts use the DO-214AC (SMA) surface mount package, ensuring mechanical and thermal compatibility with the original S1J-13 footprint.

Q: What is the significance of forward voltage variation among substitutes?

A: Forward voltage ranges from 1.0 V to 1.7 V across the substitute group. Higher forward voltage results in increased power dissipation in the diode. For applications sensitive to power loss or thermal management, lower forward voltage parts (GF1J at 1.0 V, S1J-13-F at 1.1 V) are preferred. For general-purpose applications, variations within this range are typically acceptable.

Q: Which substitute offers the widest operating temperature range?

A: ES1J-LTP and GF1J both support -65°C to 175°C junction temperature, compared to the original S1J-13 range of -65°C to 150°C. This extended range is beneficial for applications in extreme thermal environments.

Q: Why is RoHS compliance important for this selection?

A: The original S1J-13 is RoHS non-compliant. All active substitute parts listed are ROHS3 compliant, meeting current environmental and regulatory requirements for new product designs and procurement in regulated markets.

Q: Can I use ES1J or ES1J-LTP if my circuit operates at frequencies above 100 kHz?

A: Yes. Both ES1J and ES1J-LTP feature fast recovery characteristics (35 ns reverse recovery time), making them suitable for higher-frequency switching applications. Standard recovery parts (S1J-13-F, GS1J-LTP) are appropriate for lower-frequency rectification circuits.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Both are surface mount packaging formats. Tape & Reel (TR) is supplied on continuous tape for automated assembly lines. Cut Tape (CT) is supplied in shorter tape segments for smaller production runs or manual assembly. Electrical performance is identical; packaging choice depends on manufacturing process requirements.

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