S2M-TP Equivalent & Substitute Parts

Part Overview

The S2M-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 1000 V DC reverse voltage and 2 A average rectified current in a DO-214AA (SMB) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

The S2M-TP operates across a junction temperature range of -55°C to 150°C and complies with RoHS3 and REACH requirements. Standard recovery characteristics and MSL-1 moisture sensitivity make this component suitable for general industrial and commercial applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.15 @ 2 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	10	µA @ 1000 V
Capacitance @ Vr, F	30	pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the S2M-TP is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a DC reverse voltage rating of 1000 V to ensure equivalent reverse bias protection.

Current Rating: The average rectified current (Io) determines thermal and power handling capability. Direct equivalents maintain 2 A rating; parts with higher current ratings (3 A) are suitable for applications with lower current demands but not for designs requiring the full 2 A specification.

Package Type: The DO-214AA (SMB) surface mount package is mandatory for PCB compatibility. Substitutes with different package types (SMA) require board redesign.

Forward Voltage: Forward voltage drop at rated current affects power dissipation and circuit efficiency. Equivalents maintain 1.15 V @ 2 A specification.

Recovery Characteristics: Recovery speed (standard vs. fast) and reverse recovery time (trr) affect switching performance and EMI characteristics. Standard recovery parts (>500ns) are interchangeable; fast recovery parts (≤500ns) offer improved performance in switching applications.

Temperature Range: Operating junction temperature range must support the application environment. The S2M-TP operates -55°C to 150°C; substitutes with identical or wider ranges are acceptable.

Compliance: RoHS3 and REACH compliance status must match or exceed the original part specification.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	Speed	trr	Ir @ Vr	Package	Status
S2M-TP	Micro Commercial Co	1000 V	2 A	1.15 V @ 2 A	Standard >500ns	2 µs	10 µA @ 1000 V	DO-214AA (SMB)	Discontinued
S2M-LTP	Micro Commercial Co	1000 V	2 A	1.15 V @ 2 A	Fast ≤500ns	-	5 µA @ 1000 V	DO-214AA (SMB)	Active
S2M R5G	Taiwan Semiconductor Corporation	1000 V	2 A	1.15 V @ 2 A	Standard >500ns	1.5 µs	1 µA @ 1000 V	DO-214AA (SMB)	Discontinued
SB2M-M3/5BT	Vishay General Semiconductor - Diodes Division	1000 V	2 A	1.15 V @ 2 A	Standard >500ns	2 µs	1 µA @ 1000 V	DO-214AA (SMB)	Active
SB2M-M3/52T	Vishay General Semiconductor - Diodes Division	1000 V	2 A	1.15 V @ 2 A	Standard >500ns	2 µs	1 µA @ 1000 V	DO-214AA (SMB)	Active
S2M-13-F	Diodes Incorporated	1000 V	1.5 A	1.15 V @ 1.5 A	Standard >500ns	-	5 µA @ 1000 V	DO-214AA (SMB)	Active
HS3MB	Good-Ark Semiconductor	1000 V	3 A	1.7 V @ 3 A	Fast ≤500ns	75 ns	10 µA @ 1000 V	DO-214AA (SMB)	Active
S2M	MDD	1000 V	2 A	1.15 V @ 2 A	-	-	-	SOD-214AC (SMA)	Active

Engineering Selection Recommendations

Direct Equivalents (Recommended for Drop-In Replacement):

The S2M-LTP (Micro Commercial Co) is the primary recommended substitute. It maintains identical voltage and current ratings, forward voltage characteristics, and DO-214AA package compatibility. The S2M-LTP is active in production with higher inventory availability (2606 pcs) compared to the discontinued S2M-TP. The improved reverse leakage performance (5 µA vs. 10 µA) and fast recovery characteristics (≤500ns) provide enhanced reliability without requiring circuit redesign.

The SB2M-M3/5BT and SB2M-M3/52T (Vishay General Semiconductor - Diodes Division) are parametric equivalents with identical electrical specifications and DO-214AA packaging. Both parts are active with RoHS3 compliance. The SB2M-M3/5BT offers lower inventory (751 pcs) while SB2M-M3/52T provides higher availability (2600 pcs). These parts feature reduced reverse leakage (1 µA) and are suitable for direct substitution.

Functional Equivalents (Current Derating Required):

The S2M-13-F (Diodes Incorporated) operates at 1.5 A average rectified current, representing a 25% current reduction from the S2M-TP specification. This part is suitable for applications where the design current requirement does not exceed 1.5 A. The part is active with substantial inventory (20300 pcs) and maintains identical forward voltage and package specifications.

Higher Current Alternative (Thermal Margin Increase):

The HS3MB (Good-Ark Semiconductor) provides 3 A current rating with identical 1000 V voltage specification and DO-214AA packaging. This part is suitable for applications requiring thermal margin above the 2 A specification. The forward voltage increases to 1.7 V @ 3 A, resulting in higher power dissipation. Fast recovery characteristics (75 ns) improve switching performance. This part is active with high inventory (4400 pcs).

Package Variant (Board Redesign Required):

The S2M (MDD) maintains identical 1000 V / 2 A electrical specifications but uses SOD-214AC (SMA) packaging instead of DO-214AA (SMB). This part requires PCB layout modification and is not recommended for direct substitution without board redesign.

Discontinued Alternatives (Not Recommended):

The S2M R5G (Taiwan Semiconductor Corporation) is discontinued at DiGi Electronics and should not be selected for new designs despite parametric equivalence to the S2M-TP.

Frequently Asked Questions (FAQ)

Q: Can the S2M-LTP directly replace the S2M-TP without circuit modification?

A: Yes. The S2M-LTP maintains identical voltage (1000 V), current (2 A), forward voltage (1.15 V @ 2 A), and DO-214AA package specifications. The improved fast recovery characteristic (≤500ns vs. >500ns) and lower reverse leakage (5 µA vs. 10 µA) provide enhanced performance without requiring design changes.

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

A: Recovery speed refers to the time required for the diode to transition from forward conduction to reverse blocking when the applied voltage reverses. Standard recovery (>500ns) is suitable for low-frequency rectification and general-purpose applications. Fast recovery (≤500ns) reduces switching losses and EMI in higher-frequency switching applications. Both types are electrically compatible in the S2M-TP application.

Q: Can the S2M-13-F (1.5 A) be used in place of the S2M-TP (2 A)?

A: The S2M-13-F is suitable only if the application circuit current requirement does not exceed 1.5 A. The part maintains identical voltage and forward voltage specifications with DO-214AA packaging. Using this part in a 2 A application would exceed the component rating and create reliability risk.

Q: Why does the HS3MB have higher forward voltage (1.7 V @ 3 A) than the S2M-TP (1.15 V @ 2 A)?

A: Forward voltage is measured at the part's rated current. The HS3MB is rated for 3 A operation, and forward voltage increases with current. At 2 A operation, the HS3MB forward voltage would be lower than 1.7 V. The HS3MB is suitable for applications requiring thermal margin above 2 A or where the higher forward voltage is acceptable.

Q: Is the S2M (MDD) with SMA package compatible with S2M-TP designs?

A: The S2M (MDD) maintains identical electrical specifications but uses SOD-214AC (SMA) package instead of DO-214AA (SMB). These packages have different footprints and pin configurations. Direct substitution requires PCB redesign and is not recommended for drop-in replacement.

Q: What does MSL-1 (Unlimited) moisture sensitivity mean?

A: MSL-1 indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. All substitute parts listed maintain MSL-1 classification, ensuring equivalent moisture sensitivity performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance status, matching the S2M-TP specification. REACH compliance status is also consistent across all alternatives.

Q: What inventory considerations apply to substitute selection?

A: The S2M-LTP offers the highest active inventory (2606 pcs) among direct equivalents. The S2M-13-F provides the largest available stock (20300 pcs) among functional equivalents. The HS3MB offers high availability (4400 pcs) for higher current applications. Discontinued parts (S2M-TP, S2M R5G) should not be selected for new designs.

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