SF13-TP General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The SF13-TP is a general purpose rectifier diode rated for 150 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete product status and limited availability from the original manufacturer, identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and system maintenance.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 1 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 150 V
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-55°C ~ 125°C	°C
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SF13-TP is determined by equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 150 V minimum
Current - Average Rectified (Io): 1 A minimum
Voltage - Forward (Vf) (Max) @ If: 950 mV or lower @ 1 A
Reverse Recovery Time (trr): 35 ns or faster
Current - Reverse Leakage @ Vr: 5 µA or lower @ 150 V

Mechanical Equivalence Criteria:

Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial configuration
Operating Temperature Range: -55°C minimum to 125°C minimum

Compliance Criteria:

RoHS3 Compliance required
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must meet or exceed all electrical specifications while maintaining mechanical and thermal compatibility. Parts with active product status and additional qualifications (such as AEC-Q101 automotive qualification) provide enhanced availability and supply chain reliability.

Parameter Comparison

Parameter	SF13-TP (Micro Commercial Co)	SF13GHR1G (Taiwan Semiconductor Corporation)
Voltage - DC Reverse (Vr) (Max)	150 V	150 V
Current - Average Rectified (Io)	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 1 A	950 mV @ 1 A
Reverse Recovery Time (trr)	35 ns	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 150 V	5 µA @ 150 V
Mounting Type	Through Hole	Through Hole
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 125°C	-55°C ~ 150°C
Technology	Standard	Standard
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

SF13GHR1G (Taiwan Semiconductor Corporation) - Primary Substitute

The SF13GHR1G is a direct electrical and mechanical equivalent to the SF13-TP. Both components share identical ratings for reverse voltage (150 V), average rectified current (1 A), forward voltage drop (950 mV @ 1 A), and reverse recovery time (35 ns). Package compatibility is confirmed across DO-204AL and DO-41 configurations.

The SF13GHR1G offers the following advantages for component selection:

Active Product Status: Currently in production with established supply chain availability (670 Pcs in stock)
Extended Operating Temperature Range: -55°C to 150°C versus -55°C to 125°C, providing additional thermal margin
Automotive Qualification: AEC-Q101 certification indicates compliance with automotive reliability standards
REACH Compliance: REACH Unaffected status confirms regulatory compliance for European markets
Lower Capacitance: 20 pF @ 4V, 1 MHz versus 40 pF, reducing parasitic effects in high-frequency applications

Both components are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage processes.

Frequently Asked Questions (FAQ)

Q: Can SF13GHR1G be used as a direct replacement for SF13-TP in existing designs?

A: Yes. The SF13GHR1G meets all electrical specifications of the SF13-TP (150 V reverse voltage, 1 A current rating, 950 mV forward voltage, 35 ns recovery time) and shares identical through-hole DO-41 packaging. No circuit modifications are required.

Q: What is the significance of the extended operating temperature range in SF13GHR1G (-55°C to 150°C versus -55°C to 125°C)?

A: The extended upper temperature limit of 150°C provides additional thermal margin in applications where junction temperatures approach the component's maximum rating. This does not change functional operation but offers design flexibility for high-temperature environments.

Q: Does the lower capacitance of SF13GHR1G (20 pF versus 40 pF) affect circuit performance?

A: Lower capacitance reduces parasitic effects and switching transients, particularly beneficial in high-frequency rectification circuits. This represents an improvement over the original SF13-TP specification.

Q: Are both components RoHS compliant?

A: Yes. Both SF13-TP and SF13GHR1G are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, meeting current environmental and manufacturing standards.

Q: What does AEC-Q101 qualification on the SF13GHR1G indicate?

A: AEC-Q101 is an automotive industry qualification standard. This certification confirms that the SF13GHR1G has undergone rigorous reliability testing and is approved for automotive applications, indicating higher quality assurance than standard commercial-grade components.

Q: Are there any package compatibility considerations when substituting SF13-TP with SF13GHR1G?

A: Both components use DO-204AL (DO-41) axial through-hole packaging with identical pinout and lead spacing. Direct mechanical substitution is possible without PCB modifications.

Q: Why is the SF13-TP listed as obsolete?

A: Obsolete status indicates that the original manufacturer (Micro Commercial Co) has discontinued production. The SF13GHR1G provides an active, currently manufactured alternative with equivalent electrical performance and improved supply chain availability.

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