S3K-TP Equivalent & Substitute Parts

Part Overview

The S3K-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 V DC reverse voltage and 3 A average rectified current in a surface mount SMC (DO-214AB) package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and environmental specifications align with the original part's performance envelope, enabling direct replacement in circuit applications without design modification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 3 A	V
Current - Reverse Leakage @ Vr	10	µA @ 800 V
Speed	Standard Recovery >500ns	-
Package / Case	DO-214AB, SMC	-
Operating Temperature - Junction	-55°C ~ 150°C	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the S3K-TP are classified based on strict alignment with the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 800 V minimum
Current - Average Rectified (Io): 3 A minimum
Package / Case: DO-214AB (SMC) or DO-214AA (SMB) surface mount packages
Operating Temperature Range: -55°C to 150°C minimum
RoHS Status: ROHS3 Compliant
Mounting Type: Surface Mount

Grouping Logic:

Direct Equivalents (Same Package - DO-214AB SMC): Parts maintaining identical 800 V / 3 A ratings in DO-214AB SMC packaging with standard or fast recovery characteristics.

Package Variants (DO-214AA SMB): Parts with identical electrical ratings but in larger SMB package format, suitable for applications where board space permits larger component footprint.

Higher Voltage Variants: Parts rated above 800 V reverse voltage with 3 A current rating, providing overvoltage margin in applications requiring enhanced voltage headroom.

All substitute parts maintain ROHS3 compliance, surface mount technology, and active product status.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Package	Temp Range	Reverse Leakage @ Vr
S3K-TP	Micro Commercial Co	800 V	3 A	1.2 V @ 3 A	Standard >500ns	DO-214AB SMC	-55°C ~ 150°C	10 µA @ 800 V
RS3K-E3/57T	Vishay General Semiconductor	800 V	3 A	1.3 V @ 2.5 A	Fast ≤500ns	DO-214AB SMC	-55°C ~ 150°C	10 µA @ 800 V
RS3K-E3/9AT	Vishay General Semiconductor	800 V	3 A	1.3 V @ 2.5 A	Fast ≤500ns	DO-214AB SMC	-55°C ~ 150°C	10 µA @ 800 V
S3K-E3/57T	Vishay General Semiconductor	800 V	3 A	1.15 V @ 2.5 A	Standard >500ns	DO-214AB SMC	-55°C ~ 150°C	10 µA @ 800 V
S3K-E3/9AT	Vishay General Semiconductor	800 V	3 A	1.15 V @ 2.5 A	Standard >500ns	DO-214AB SMC	-55°C ~ 150°C	10 µA @ 800 V
S3K-13-F	Diodes Incorporated	800 V	3 A	1.15 V @ 3 A	Standard >500ns	DO-214AB SMC	-65°C ~ 150°C	10 µA @ 800 V
RS3K-13-F	Diodes Incorporated	800 V	3 A	1.3 V @ 3 A	Fast ≤500ns	DO-214AB SMC	-65°C ~ 150°C	5 µA @ 800 V
RS3KHE3_A/H	Vishay General Semiconductor	800 V	3 A	1.3 V @ 2.5 A	Fast ≤500ns	DO-214AB SMC	-55°C ~ 150°C	10 µA @ 800 V
S3KB-13-F	Diodes Incorporated	800 V	3 A	1.15 V @ 3 A	Standard >500ns	DO-214AA SMB	-65°C ~ 150°C	10 µA @ 800 V
RS3KB-13-F	Diodes Incorporated	800 V	3 A	1.3 V @ 3 A	Fast ≤500ns	DO-214AA SMB	-65°C ~ 150°C	5 µA @ 800 V
RS3M-13-F	Diodes Incorporated	1000 V	3 A	1.3 V @ 3 A	Fast ≤500ns	DO-214AB SMC	-65°C ~ 150°C	5 µA @ 1000 V

Engineering Selection Recommendations

Direct Package Equivalents (DO-214AB SMC):

Parts S3K-E3/57T, S3K-E3/9AT, S3K-13-F, RS3K-E3/57T, RS3K-E3/9AT, RS3K-13-F, and RS3KHE3_A/H maintain identical 800 V / 3 A electrical specifications and DO-214AB SMC package format. These parts are suitable for direct replacement without PCB layout modification. All are ROHS3 compliant and active product status.

Package Variant Selection (DO-214AA SMB):

Parts S3KB-13-F and RS3KB-13-F provide equivalent 800 V / 3 A electrical performance in the larger DO-214AA SMB package. Selection of SMB variants requires PCB footprint compatibility verification, as the SMB package occupies greater board area than SMC.

Higher Voltage Variant:

Part RS3M-13-F is rated for 1000 V reverse voltage with 3 A current in DO-214AB SMC package. This part provides 200 V additional voltage margin and is suitable for applications requiring enhanced overvoltage protection. ROHS3 compliance and active status are maintained.

Automotive-Grade Option:

Part RS3KHE3_A/H carries AEC-Q101 automotive qualification and is suitable for automotive and harsh environment applications requiring formal qualification documentation.

Recovery Speed Considerations:

Standard recovery parts (S3K-TP, S3K-E3/57T, S3K-E3/9AT, S3K-13-F, S3KB-13-F) exhibit recovery times exceeding 500 ns. Fast recovery parts (RS3K-E3/57T, RS3K-E3/9AT, RS3K-13-F, RS3KB-13-F, RS3KHE3_A/H, RS3M-13-F) exhibit recovery times of 500 ns or less. Recovery speed selection depends on circuit switching frequency and EMI requirements.

Frequently Asked Questions (FAQ)

Q: Can S3K-TP be replaced with S3K-13-F?

A: Yes. Both parts are rated 800 V / 3 A in DO-214AB SMC package with standard recovery characteristics. S3K-13-F is manufactured by Diodes Incorporated and maintains ROHS3 compliance and active product status. Operating temperature range extends to -65°C for S3K-13-F versus -55°C for S3K-TP.

Q: What is the difference between SMC and SMB package variants?

A: SMC (DO-214AB) and SMB (DO-214AA) are both surface mount packages with identical electrical performance in the 800 V / 3 A rating. SMB is physically larger than SMC. Package selection depends on available PCB footprint space. Both packages are compatible with standard surface mount assembly processes.

Q: Can S3K-TP be replaced with RS3M-13-F?

A: Yes, with design consideration. RS3M-13-F is rated for 1000 V reverse voltage versus 800 V for S3K-TP, providing additional voltage margin. Current rating remains 3 A. The higher voltage rating does not degrade performance in 800 V applications. RS3M-13-F maintains DO-214AB SMC package compatibility and ROHS3 compliance.

Q: What does "Fast Recovery" mean in the speed specification?

A: Fast recovery indicates reverse recovery time of 500 ns or less. Standard recovery indicates reverse recovery time exceeding 500 ns. Fast recovery diodes exhibit lower switching losses and reduced EMI in high-frequency switching applications. Standard recovery diodes are suitable for lower frequency rectification circuits.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance status, consistent with the original S3K-TP specification.

Q: What is the significance of AEC-Q101 qualification on RS3KHE3_A/H?

A: AEC-Q101 is an automotive industry qualification standard. RS3KHE3_A/H carries this qualification, indicating suitability for automotive applications and harsh operating environments. This qualification is not required for general industrial applications.

Q: Can forward voltage differences affect circuit performance?

A: Forward voltage differences between parts are within acceptable engineering tolerance for rectifier diode applications. S3K-TP specifies 1.2 V @ 3 A, while substitute parts range from 1.15 V to 1.3 V at equivalent or similar current levels. These variations result in minor differences in power dissipation and are acceptable for standard rectification circuits.

Q: What packaging options are available for the S3K-TP substitute?

A: Substitute parts are available in two surface mount packages: DO-214AB (SMC) and DO-214AA (SMB). DO-214AB SMC is the original package format. DO-214AA SMB variants provide identical electrical performance in a larger footprint. Tape & Reel (TR) and Cut Tape (CT) packaging formats are available for manufacturing processes.

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