SF14M-TP Equivalent & Substitute Parts

Part Overview

The SF14M-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (HSMA) package. This component is classified as obsolete, indicating discontinuation from the manufacturer. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

SF14M-TP

Micro Commercial CoIn Stock: 936SF14M-TP Datasheet

Current PartRFQ

ES1D-LTP

Micro Commercial CoIn Stock: 335351ES1D-LTP Datasheet

DirectRFQ

ES1D

EVVO SemiIn Stock: 140421ES1D Datasheet

SimilarRFQ

ES1D R3G

Taiwan Semiconductor CorporationIn Stock: 860ES1D R3G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SF14M-TP is determined by electrical and mechanical parameter equivalence within the general-purpose rectifier diode category. The critical parameters that define substitutability are:

Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 1 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Reverse Recovery Time (trr): 35 ns
• Current - Reverse Leakage @ Vr: 5 µA @ 200 V
• Capacitance @ Vr, F: 15 pF @ 4V, 1MHz

Mechanical Parameters:

• Mounting Type: Surface Mount
• Package / Case: DO-214AC, SMA

Environmental & Compliance:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must meet or exceed these specifications. Variations in forward voltage (Vf) and operating temperature range are permissible provided the primary electrical ratings and package compatibility remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: ES1D-LTP (Micro Commercial Co)

The ES1D-LTP is the recommended direct substitute for the obsolete SF14M-TP. Both components are manufactured by Micro Commercial Co and share identical electrical specifications across all critical parameters. The ES1D-LTP maintains ROHS3 compliance and MSL 1 rating. The extended operating temperature range (-65°C ~ 175°C) of the ES1D-LTP provides additional thermal margin compared to the SF14M-TP (-65°C ~ 150°C). Inventory availability of 335,300 pieces ensures supply continuity. Product status is Active, confirming ongoing manufacturer support.

Secondary Substitute: ES1D (EVVO Semi)

The ES1D from EVVO Semi meets all core electrical specifications and package requirements. This part is Active in product status with substantial inventory (140,400 pieces). The forward voltage specification (1 V @ 1 A) is marginally higher than the ES1D-LTP (950 mV @ 1 A), and the operating temperature range is -55°C ~ 150°C, which is narrower at the lower end compared to the SF14M-TP. Selection of this substitute is appropriate for applications where the lower temperature limit of -55°C is acceptable.

Tertiary Substitute: ES1D R3G (Taiwan Semiconductor Corporation)

The ES1D R3G is electrically equivalent to the SF14M-TP with matching reverse voltage, current rating, and recovery characteristics. This part is listed as Discontinued at DiGi Electronics, indicating limited future availability. Capacitance specification is 16 pF @ 4V, 1MHz, which is marginally higher than the 15 pF specification of the main part. Operating temperature range is -55°C ~ 150°C. Selection of this substitute is appropriate only when inventory is confirmed available and long-term supply is not a requirement.

Frequently Asked Questions (FAQ)

Q: Can the ES1D-LTP directly replace the SF14M-TP without circuit modification?

A: Yes. The ES1D-LTP meets all electrical specifications of the SF14M-TP, including voltage rating (200 V), current rating (1 A), reverse recovery time (35 ns), and reverse leakage current (5 µA @ 200 V). Both components use the DO-214AC (SMA) surface mount package. No circuit modification is required.

Q: What is the difference between the ES1D-LTP and ES1D?

A: Both parts meet the core electrical specifications of the SF14M-TP. The ES1D-LTP is manufactured by Micro Commercial Co with an operating temperature range of -65°C ~ 175°C and forward voltage of 950 mV @ 1 A. The ES1D is manufactured by EVVO Semi with an operating temperature range of -55°C ~ 150°C and forward voltage of 1 V @ 1 A. Selection depends on application temperature requirements and acceptable forward voltage variation.

Q: Is the ES1D R3G a suitable long-term replacement?

A: The ES1D R3G is electrically equivalent but is listed as Discontinued at DiGi Electronics. This status indicates limited future availability. While current inventory (840 pieces) exists, this part is not recommended for new designs or applications requiring long-term supply assurance. The ES1D-LTP or ES1D are preferred for sustained production requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (ES1D-LTP, ES1D, and ES1D R3G) are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the SF14M-TP.

Q: What is the significance of the capacitance specification (15 pF vs. 16 pF)?

A: The capacitance specification at 4 V, 1 MHz is a parasitic parameter of the diode junction. The ES1D R3G specifies 16 pF compared to 15 pF for other parts. This 1 pF difference is within typical manufacturing tolerance and does not affect substitutability for general-purpose rectification applications.

Q: Can these diodes be used in high-frequency switching applications?

A: All listed parts are classified as Fast Recovery diodes with reverse recovery time (trr) of 35 ns. This specification indicates suitability for switching applications up to moderate frequencies. Application-specific circuit analysis is required to confirm compatibility with particular switching frequencies and duty cycles.

Q: What packaging options are available for the substitute parts?

A: The ES1D-LTP and ES1D R3G are supplied in Cut Tape (CT) and Digi-Reel® packaging. The ES1D is also supplied in Cut Tape (CT) and Digi-Reel® packaging. All parts use the DO-214AC (SMA) surface mount package, ensuring compatibility with existing PCB layouts designed for the SF14M-TP.