SF15G-TP Equivalent & Substitute Parts Reference

Part Overview

The SF15G-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 300 V DC reverse voltage and 1 A average rectified current in a DO-41 through-hole axial package. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for ongoing maintenance, repair, and legacy system support where the original component is no longer available or inventory is depleted.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	300	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3	V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 300 V
Capacitance @ Vr, F	10	pF @ 4V, 1MHz
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SF15G-TP are classified based on strict electrical and mechanical parameter matching:

Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 300 V (exact match required)
Current - Average Rectified (Io): 1 A (exact match required)
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A (exact match required)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)
Reverse Recovery Time (trr): 35 ns (exact match required)
Current - Reverse Leakage @ Vr: 5 µA @ 300 V (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: DO-204AL, DO-41, Axial (compatible variants acceptable)
Operating Temperature Range: -55°C to 150°C minimum (equal or wider range acceptable)
RoHS Status: ROHS3 Compliant (required)

Grouping Categories:

Upgrade Substitute: SF15GHB0G (Taiwan Semiconductor Corporation) — Active product status with automotive-grade qualification (AEC-Q101), providing enhanced reliability for new designs while maintaining all electrical parameters.

Parametric Equivalents: SF15G, SF15G R1G, SF15GH, SF15GHR1G (Taiwan Semiconductor Corporation) — All maintain identical electrical specifications. SF15GH and SF15GHR1G include automotive-grade qualification. Differences exist only in packaging format (Cut Tape vs. Tape & Reel) and product status (Active vs. Not For New Designs).

Similar Substitute: MUR130G (onsemi) — Meets all core electrical parameters but carries Obsolete product status and exhibits a longer reverse recovery time (75 ns vs. 35 ns), making it suitable only for applications where recovery speed is not performance-critical.

Parameter Comparison

Parameter	SF15G-TP (Main)	SF15GHB0G	SF15G	SF15GH	MUR130G
Manufacturer	Micro Commercial Co	Taiwan Semiconductor	Taiwan Semiconductor	Taiwan Semiconductor	onsemi
Vr (Max)	300 V	300 V	300 V	300 V	300 V
Io	1 A	1 A	1 A	1 A	1 A
Vf (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A	1.25 V @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
trr	35 ns	35 ns	35 ns	35 ns	75 ns
Ir @ Vr	5 µA @ 300 V	5 µA @ 300 V	5 µA @ 300 V	5 µA @ 300 V	5 µA @ 300 V
Capacitance @ Vr, F	10 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	—
Tj (Operating)	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-65 to 175 °C
Package	DO-204AL, DO-41, Axial	DO-204AL, DO-41	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Product Status	Not For New Designs	Active	Active	Active	Obsolete
Grade	—	Automotive	—	Automotive	—
Qualification	—	AEC-Q101	—	AEC-Q101	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Active Production and New Designs: Select SF15GHB0G or SF15GH. Both are Active products with ROHS3 compliance and AEC-Q101 automotive qualification. SF15GHB0G is the preferred upgrade substitute, offering the highest product maturity and qualification status. SF15GH provides an equivalent alternative with identical electrical performance.

For Legacy System Maintenance: SF15G and SF15G R1G are direct parametric equivalents with Active product status. These parts maintain all electrical specifications of the original SF15G-TP and are suitable for direct replacement in existing assemblies.

For Cost-Sensitive Applications Where Recovery Speed is Non-Critical: MUR130G is electrically compatible but carries Obsolete product status and exhibits 75 ns reverse recovery time versus 35 ns for the primary substitutes. Use only when recovery speed performance margin exists in the circuit design and long-term availability is not a concern.

Compliance Considerations: All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental specifications. Parts with automotive qualification (SF15GHB0G, SF15GH, SF15GHR1G) are suitable for automotive and high-reliability applications.

Frequently Asked Questions (FAQ)

Q: Can SF15G-TP be directly replaced with SF15G? A: Yes. SF15G is a parametric equivalent with identical electrical specifications (300 V, 1 A, 35 ns trr, 1.3 V Vf). Both use DO-204AL/DO-41 axial packages. The primary difference is product status: SF15G is Active while SF15G-TP is Not For New Designs. Mechanical and electrical compatibility is complete.

Q: What is the difference between SF15GH and SF15GHB0G? A: Both parts are electrically identical and carry AEC-Q101 automotive qualification. SF15GHB0G is classified as an Upgrade Substitute with Active status, while SF15GH is a Parametric Equivalent, also Active. Both are suitable for automotive and high-reliability applications. Selection may depend on packaging availability and supplier inventory.

Q: Why does MUR130G have a longer reverse recovery time (75 ns vs. 35 ns)? A: MUR130G is from the onsemi SWITCHMODE™ series and carries Obsolete product status. The 75 ns reverse recovery time is a characteristic of this device family. It remains electrically compatible for 300 V, 1 A applications but should be used only when circuit design tolerates the longer recovery time without performance degradation.

Q: Are all substitute parts available in the same package format? A: All substitute parts use DO-204AL/DO-41 axial through-hole packages, ensuring mechanical compatibility with existing PCB layouts. Packaging format variations (Cut Tape vs. Tape & Reel) do not affect electrical performance or physical fit.

Q: Which substitute part should be selected for automotive applications? A: SF15GHB0G, SF15GH, or SF15GHR1G are qualified for automotive use with AEC-Q101 certification. SF15GHB0G is the recommended upgrade substitute for new automotive designs. SF15GH and SF15GHR1G are equivalent alternatives with identical automotive qualification.

Q: Is RoHS3 compliance maintained across all substitutes? A: Yes. All substitute parts listed (SF15GHB0G, SF15G, SF15G R1G, SF15GH, SF15GHR1G, MUR130G) are ROHS3 Compliant, matching the original SF15G-TP specification.

Q: Can SF15G-TP be used interchangeably with MUR130G in existing designs? A: Electrical substitution is possible due to matching 300 V, 1 A, and 5 µA leakage specifications. However, MUR130G's 75 ns reverse recovery time differs from SF15G-TP's 35 ns. Use MUR130G only if circuit design analysis confirms that the longer recovery time does not compromise performance. MUR130G's Obsolete status also presents long-term supply risk.

Q: What is the significance of AEC-Q101 qualification? A: AEC-Q101 is the automotive electronics council qualification standard for discrete semiconductors. Parts carrying this qualification (SF15GHB0G, SF15GH, SF15GHR1G) have undergone rigorous reliability testing and are approved for automotive applications. Non-qualified parts may not meet automotive supply chain requirements.

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