Equivalent & Substitute Parts for S1B-TP

Part Overview

The S1B-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 100 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AA (HSMB) package. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with modified performance characteristics within acceptable application parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	V
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Capacitance @ Vr, F	12	pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	-
Operating Temperature - Junction	-55 to 150	°C
Technology	Standard	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the S1B-TP is determined by the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a DC reverse voltage rating of 100 V or greater to ensure safe operation within the original circuit design envelope.

Package Compatibility: The DO-214AA (SMB) surface mount package is mandatory for mechanical and thermal compatibility with existing PCB layouts and assembly processes.

Operating Temperature Range: The junction temperature range of -55°C to 150°C establishes the thermal operating envelope. Substitute parts must support this range.

Current Rating Consideration: The S1B-TP is rated for 1 A average rectified current. Substitute parts with equal or higher current ratings are functionally compatible, as they can safely handle the specified load without exceeding thermal or electrical limits.

Recovery Characteristics: Standard recovery technology (>500 ns) defines the switching speed class. Substitute parts may employ faster recovery characteristics without compromising circuit function.

Regulatory Compliance: RoHS3 compliance and REACH unaffected status are required for equivalent substitution in regulated applications.

Parameter Comparison

Parameter	S1B-TP (Micro Commercial Co)	S1B_R1_00001 (Panjit International Inc.)	ES3BB-13-F (Diodes Incorporated)
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	1 A	1 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A	900 mV @ 3 A
Reverse Recovery Time (trr)	2 µs	Not specified	25 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	1 µA @ 100 V	10 µA @ 100 V
Capacitance @ Vr, F	12 pF @ 4V, 1MHz	12 pF @ 4V, 1MHz	45 pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Technology	Standard	Standard	Fast Recovery
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Active	Active

Engineering Selection Recommendations

S1B_R1_00001 (Panjit International Inc.): This part is a parametric equivalent to the S1B-TP, maintaining identical voltage rating, current rating, forward voltage, and capacitance specifications. The S1B_R1_00001 is currently in active production status with 1882 pieces in stock inventory. This part is ROHS3 compliant and REACH unaffected, meeting all regulatory requirements. The parametric equivalence and active product status make this the primary substitute for direct replacement applications.

ES3BB-13-F (Diodes Incorporated): This part shares the same 100 V voltage rating and DO-214AA package with the S1B-TP but provides enhanced current handling capability at 3 A versus 1 A. The ES3BB-13-F employs fast recovery technology (25 ns) compared to the standard recovery of the original part. This part is currently in active production with 126199 pieces in stock inventory and is ROHS3 compliant and REACH unaffected. The ES3BB-13-F is suitable for applications requiring higher current capacity or faster switching characteristics within the same voltage and package constraints.

Frequently Asked Questions (FAQ)

Q: Can the S1B_R1_00001 be used as a direct replacement for the S1B-TP?

A: Yes. The S1B_R1_00001 maintains identical electrical specifications including 100 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage at 1 A, and 12 pF capacitance. Both parts use the DO-214AA surface mount package. The S1B_R1_00001 is currently in active production status.

Q: What is the primary difference between the ES3BB-13-F and the S1B-TP?

A: The ES3BB-13-F is rated for 3 A average rectified current compared to the S1B-TP's 1 A rating. Additionally, the ES3BB-13-F employs fast recovery technology (25 ns) versus the standard recovery (2 µs) of the S1B-TP. Both parts maintain the same 100 V voltage rating and DO-214AA package.

Q: Are all substitute parts compatible with the original PCB layout?

A: Yes. All listed substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with existing PCB designs and assembly processes.

Q: Do the substitute parts meet the same regulatory requirements as the S1B-TP?

A: Yes. Both the S1B_R1_00001 and ES3BB-13-F are ROHS3 compliant and REACH unaffected, matching the regulatory status of the S1B-TP.

Q: Can the ES3BB-13-F be used in applications designed for the S1B-TP?

A: Yes. The ES3BB-13-F maintains the same 100 V voltage rating and operating temperature range (-55°C to 150°C). The higher current rating (3 A) and faster recovery characteristics (25 ns) do not create incompatibility; they represent enhanced performance margins. The part is suitable for circuits designed for the S1B-TP.

Q: What is the inventory status of the substitute parts?

A: The S1B_R1_00001 has 1882 pieces in stock. The ES3BB-13-F has 126199 pieces in stock. Both parts are currently in active production.

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