Equivalent & Substitute Parts for S3M-13

Part Overview

The S3M-13 is a general-purpose rectifier diode rated for 1000 V DC reverse voltage and 3 A average rectified current in a surface mount SMC (DO-214AB) package. Manufactured by Diodes Incorporated, this component is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

The S3M-13 operates across a junction temperature range of -65°C to 150°C with standard recovery characteristics (>500 ns) and forward voltage of 1.15 V at 3 A. Due to its discontinued status, equivalent substitute parts must maintain electrical and mechanical compatibility while meeting current availability and compliance requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 3 A	V
Speed Classification	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	10	µA @ 1000 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-65 to 150	°C
RoHS Status	Non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the S3M-13 is determined by strict equivalence across the following critical parameters:

Mandatory Electrical Equivalence:

Voltage - DC Reverse (Vr) (Max): 1000 V
Current - Average Rectified (Io): 3 A
Package / Case: DO-214AB, SMC (surface mount)
Mounting Type: Surface Mount

Acceptable Variation Ranges:

Voltage - Forward (Vf) (Max) @ If: Substitute parts may vary within ±0.55 V of the original 1.15 V specification
Current - Reverse Leakage @ Vr: Substitute parts may equal or be lower than 10 µA @ 1000 V
Speed Classification: Both standard recovery (>500 ns) and fast recovery (≤500 ns) diodes are acceptable substitutes, as fast recovery represents an enhancement
Operating Temperature - Junction: Substitute parts must support the minimum range of -65°C to 150°C or equivalent

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (Standard Recovery): Parts maintaining identical electrical characteristics and standard recovery speed classification.

Category B - Enhanced Performance Alternatives (Fast Recovery): Parts with improved recovery speed (≤500 ns) that provide superior switching performance while maintaining voltage and current ratings.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed Classification	Reverse Leakage @ Vr [µA]	Package	Temp Range [°C]	Product Status	RoHS Status
S3M-13	Diodes Incorporated	1000	3	1.15 @ 3 A	Standard Recovery >500ns	10 @ 1000 V	DO-214AB, SMC	-65 to 150	Discontinued	Non-compliant
S3M-13-F	Diodes Incorporated	1000	3	1.15 @ 3 A	Standard Recovery >500ns	10 @ 1000 V	DO-214AB, SMC	-65 to 150	Active	ROHS3 Compliant
S3M	Diotec Semiconductor	1000	3	1.15 @ 3 A	Standard Recovery >500ns	5 @ 1000 V	DO-214AB, SMC	-50 to 150	Active	Not applicable
S3M-E3/57T	Vishay General Semiconductor - Diodes Division	1000	3	1.15 @ 2.5 A	Standard Recovery >500ns	10 @ 1000 V	DO-214AB, SMC	-55 to 150	Active	ROHS3 Compliant
S3M-TP	Micro Commercial Co	1000	3	1.2 @ 3 A	Standard Recovery >500ns	10 @ 1000 V	DO-214AB, SMC	-55 to 150	Active	ROHS3 Compliant
CURC307-G	Comchip Technology	1000	3	1.7 @ 3 A	Fast Recovery ≤500ns	5 @ 1000 V	DO-214AB, SMC	-40 to 150	Active	ROHS3 Compliant
STTH310S	STMicroelectronics	1000	3	1.7 @ 3 A	Fast Recovery ≤500ns	10 @ 1000 V	DO-214AB, SMC	-40 to 175	Active	ROHS3 Compliant
SMLJ60S10-TP	Micro Commercial Co	1000	6	1.0 @ 6 A	Standard Recovery >500ns	5 @ 1000 V	DO-214AB, SMC	-55 to 150	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalent:

The S3M-13-F (Diodes Incorporated) is the direct functional equivalent of the S3M-13. This part maintains identical electrical specifications (1000 V, 3 A, 1.15 V forward voltage, standard recovery) and mechanical compatibility while offering active product status and ROHS3 compliance. The S3M-13-F is available in Cut Tape and Digi-Reel packaging with 15,100 units in stock.

Secondary Recommendations - Standard Recovery Alternatives:

The S3M-TP (Micro Commercial Co) provides equivalent electrical performance with active status and ROHS3 compliance. Forward voltage is marginally higher at 1.2 V @ 3 A. Inventory availability is substantial at 321,300 units. Packaging is Tape & Reel format.

The S3M-E3/57T (Vishay General Semiconductor - Diodes Division) maintains electrical equivalence with forward voltage of 1.15 V @ 2.5 A and active product status with ROHS3 compliance. Inventory is 34,200 units in Cut Tape packaging.

The S3M (Diotec Semiconductor) offers equivalent electrical performance with reduced reverse leakage (5 µA vs. 10 µA). Product status is active with 9,293 units available. RoHS compliance status is not applicable.

Enhanced Performance Alternative - Fast Recovery:

The STTH310S (STMicroelectronics) and CURC307-G (Comchip Technology) provide fast recovery characteristics (≤500 ns, 75 ns reverse recovery time) while maintaining 1000 V and 3 A ratings. Both are ROHS3 compliant and active. Forward voltage is elevated at 1.7 V @ 3 A. These parts are suitable for applications requiring improved switching performance.

Higher Current Alternative:

The SMLJ60S10-TP (Micro Commercial Co) is rated for 6 A average rectified current at 1000 V, providing current margin above the original 3 A specification. This part is suitable for applications requiring higher current capacity within the same voltage class and package footprint.

Frequently Asked Questions (FAQ)

Q: Can the S3M-13-F be used as a direct replacement for the S3M-13?

A: Yes. The S3M-13-F is electrically and mechanically identical to the S3M-13, with matching voltage (1000 V), current (3 A), forward voltage (1.15 V @ 3 A), and package specifications (DO-214AB, SMC). The primary difference is product status (active vs. discontinued) and RoHS compliance (ROHS3 vs. non-compliant).

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

A: Standard recovery diodes (>500 ns) have longer reverse recovery times, while fast recovery diodes (≤500 ns) switch more rapidly. Fast recovery diodes reduce switching losses and electromagnetic interference in high-frequency applications. Both types maintain identical voltage and current ratings for the S3M series.

Q: Are there any thermal considerations when selecting a substitute?

A: The S3M-13 operates from -65°C to 150°C. Most substitute parts operate within -55°C to 150°C or -40°C to 175°C ranges. Verify that the selected substitute meets the minimum temperature requirement of your application. The STTH310S extends to 175°C maximum junction temperature.

Q: Can the SMLJ60S10-TP be used in place of the S3M-13?

A: The SMLJ60S10-TP is rated for 6 A average rectified current compared to the S3M-13's 3 A rating. While it maintains the same 1000 V voltage rating and DO-214AB package, the higher current rating makes it suitable only for applications where the additional current capacity does not create thermal or design conflicts. Forward voltage is lower at 1.0 V @ 6 A.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in Cut Tape (CT), Digi-Reel, and Tape & Reel (TR) formats. All maintain the same DO-214AB (SMC) physical package. Select packaging based on assembly equipment compatibility and procurement volume requirements.

Q: Are all substitute parts RoHS compliant?

A: Most active substitute parts (S3M-13-F, S3M-TP, S3M-E3/57T, CURC307-G, STTH310S, SMLJ60S10-TP) are ROHS3 compliant. The S3M (Diotec Semiconductor) has RoHS status listed as not applicable. The original S3M-13 is non-compliant. Verify RoHS compliance requirements for your application before final selection.

Q: What is the significance of reverse leakage current specifications?

A: Reverse leakage current (measured at maximum reverse voltage) indicates the quality of the diode junction. Lower leakage current (5 µA vs. 10 µA) represents better junction quality and lower standby power consumption. Both values are acceptable for general-purpose rectification applications.

Q: Can fast recovery diodes (STTH310S, CURC307-G) be used in applications designed for standard recovery diodes?

A: Yes. Fast recovery diodes are backward compatible with standard recovery applications. The faster switching characteristic provides improved performance without compromising functionality. However, the elevated forward voltage (1.7 V vs. 1.15 V) may affect power dissipation calculations in high-current applications.

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