UFM15PL-TP Equivalent & Substitute Parts

Part Overview

The UFM15PL-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123FL package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for legacy system support, maintenance applications, and design transitions to active alternatives that meet identical or superior electrical specifications.

Key Parameters

Parameter	Value	Specification Basis
Voltage - DC Reverse (Vr) (Max)	600 V	Primary rating determining voltage class compatibility
Current - Average Rectified (Io)	1 A	Primary rating determining current capacity
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 1 A	Affects power dissipation and circuit performance
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Determines switching characteristics and application suitability
Reverse Recovery Time (trr)	75 ns	Critical for high-frequency switching applications
Mounting Type	Surface Mount	Determines PCB assembly compatibility
Package / Case	SOD-123F	Physical footprint and thermal characteristics
Operating Temperature - Junction	-65°C ~ 150°C	Defines thermal operating range
RoHS Status	ROHS3 Compliant	Environmental and regulatory compliance

Substitute Part Grouping Explanation

Substitution of the UFM15PL-TP is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 600 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Mounting Type: Must be Surface Mount
Package compatibility: SOD-123 family variants acceptable (SOD-123F, SOD-123FL, SOD-123H, SOD-123T)
RoHS3 Compliance: Required for regulatory alignment

Secondary Performance Considerations:

Voltage - Forward (Vf): Lower values indicate improved efficiency; values up to 1.7 V @ 1 A are acceptable
Speed Classification: Fast Recovery (≤ 500ns) or Standard Recovery (> 500ns) both acceptable depending on application requirements
Reverse Recovery Time (trr): Lower values preferred for switching applications; no maximum restriction imposed
Operating Temperature Range: Must encompass or match the -65°C to 150°C range

Substitute parts are grouped into two categories:

Category A - Functional Equivalents (Same Speed Class): Parts with Fast Recovery characteristics matching UFM15PL-TP specifications (CMMR1U-06 TR PBFREE, SF1JWF-7)

Category B - Parametric Substitutes (Alternative Speed Class): Parts with Standard Recovery characteristics that meet voltage and current requirements but differ in switching speed (CGRKM4005-HF, CGRM4005-HF, CGRMT4005-HF)

Parameter Comparison

Parameter	UFM15PL-TP	CGRKM4005-HF	CGRM4005-HF	CGRMT4005-HF	CMMR1U-06 TR PBFREE	SF1JWF-7
Manufacturer	Micro Commercial Co	Comchip Technology	Comchip Technology	Comchip Technology	Central Semiconductor Corp	Diodes Incorporated
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 1 A	1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.7 V @ 1 A	1.7 V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns	Standard Recovery > 500ns	Standard Recovery > 500ns	Standard Recovery > 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns
Reverse Recovery Time (trr)	75 ns	Not specified	Not specified	Not specified	100 ns	35 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	1 µA @ 600 V	5 µA @ 600 V
Capacitance @ Vr, F	20pF @ 4V, 1MHz	15pF @ 4V, 1MHz	15pF @ 4V, 1MHz	15pF @ 4V, 1MHz	9pF @ 4V, 1MHz	7pF @ 4V, 1MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123F	SOD-123T	SOD-123T	SOD-123H	SOD-123F	SOD-123F
Operating Temperature - Junction	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Product Status	Not For New Designs	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Characteristics):

CMMR1U-06 TR PBFREE and SF1JWF-7 are parametric equivalents to UFM15PL-TP. Both maintain Fast Recovery speed classification (≤ 500ns), identical 600 V / 1 A ratings, and forward voltage of 1.7 V @ 1 A. Both manufacturers are active, with ROHS3 compliance and unlimited moisture sensitivity level. CMMR1U-06 TR PBFREE offers the widest operating temperature range (-65°C ~ 150°C) matching UFM15PL-TP. SF1JWF-7 provides superior reverse recovery time (35 ns versus 75 ns), beneficial for high-frequency switching applications. Both are suitable for legacy system maintenance and direct circuit substitution.

For Performance-Enhanced Replacement (Improved Characteristics):

CGRKM4005-HF, CGRM4005-HF, and CGRMT4005-HF are active Comchip Technology alternatives with reduced forward voltage (1.0 V to 1.1 V @ 1 A) compared to UFM15PL-TP (1.7 V @ 1 A), resulting in lower power dissipation. These parts employ Standard Recovery speed classification (> 500ns), suitable for low-frequency rectification applications. All three maintain 600 V / 1 A ratings and ROHS3 compliance. Operating temperature range is -55°C ~ 150°C, which covers most industrial applications but does not extend to -65°C. Package variants differ (SOD-123T for CGRKM4005-HF and CGRM4005-HF; SOD-123H for CGRMT4005-HF), requiring PCB footprint verification.

Product Status Consideration:

All substitute parts carry "Active" product status, ensuring long-term availability and manufacturing support. UFM15PL-TP's "Not For New Designs" status necessitates transition to active alternatives for new development and extended production runs.

Frequently Asked Questions (FAQ)

Q: Can CGRKM4005-HF, CGRM4005-HF, or CGRMT4005-HF replace UFM15PL-TP in all applications?

A: These Comchip Technology parts meet the primary electrical requirements (600 V, 1 A) but differ in speed classification. They employ Standard Recovery (> 500ns) versus UFM15PL-TP's Fast Recovery (≤ 500ns). In low-frequency rectification circuits (power supplies, general-purpose rectification), they function identically. In high-frequency switching applications (> 100 kHz), the longer recovery time may cause increased switching losses and heat generation. Verify application frequency requirements before substitution.

Q: What is the difference between CMMR1U-06 TR PBFREE and SF1JWF-7?

A: Both are Fast Recovery equivalents with identical 600 V / 1 A ratings and 1.7 V forward voltage. SF1JWF-7 offers superior reverse recovery time (35 ns versus 100 ns), making it preferable for high-frequency switching applications. CMMR1U-06 TR PBFREE provides lower reverse leakage current (1 µA versus 5 µA @ 600 V) and lower capacitance (9pF versus 7pF), beneficial for precision analog circuits. Both support the full -65°C ~ 150°C operating range.

Q: Are package variants (SOD-123F, SOD-123T, SOD-123H) interchangeable on the PCB?

A: SOD-123 family packages share identical electrical performance but differ in physical dimensions and thermal characteristics. SOD-123F, SOD-123T, and SOD-123H are mechanically distinct and require matching PCB footprints. Verify the target PCB design supports the substitute part's specific package variant before assembly. Footprint incompatibility will prevent proper component placement and electrical connection.

Q: Does operating temperature range affect substitution suitability?

A: UFM15PL-TP supports -65°C ~ 150°C; CMMR1U-06 TR PBFREE and SF1JWF-7 match this range. Comchip alternatives (CGRKM4005-HF, CGRM4005-HF, CGRMT4005-HF) support -55°C ~ 150°C. If the application requires operation below -55°C, only CMMR1U-06 TR PBFREE or SF1JWF-7 are suitable. For standard industrial temperature ranges (-40°C to +85°C), all substitutes are acceptable.

Q: Why do some substitutes show lower forward voltage?

A: Forward voltage (Vf) varies with diode construction and doping profile. CGRKM4005-HF (1.0 V), CGRM4005-HF (1.1 V), and CGRMT4005-HF (1.1 V) exhibit lower Vf than UFM15PL-TP (1.7 V), indicating improved efficiency and reduced power dissipation. This is a performance advantage in power supply applications. However, circuits designed with precise voltage drop calculations may require recalculation if substituting with lower-Vf parts.

Q: What does "Fast Recovery" versus "Standard Recovery" mean for circuit operation?

A: Recovery time (trr) is the interval required for a diode to transition from conducting to blocking state. Fast Recovery (≤ 500ns) minimizes reverse current spikes during switching transitions, reducing electromagnetic interference and switching losses in high-frequency circuits. Standard Recovery (> 500ns) is adequate for low-frequency rectification but generates larger transient currents. Application frequency determines which classification is appropriate.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. UFM15PL-TP and all listed substitutes (CGRKM4005-HF, CGRM4005-HF, CGRMT4005-HF, CMMR1U-06 TR PBFREE, SF1JWF-7) are ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing and restricted substance limitations.

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