SM4003PL-TP Equivalent & Substitute Parts Reference

Part Overview

The SM4003PL-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 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 ongoing maintenance, repair, and legacy system support where the original part is no longer readily available or where design flexibility permits component substitution within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	V
Speed Classification	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Mounting Type	Surface Mount	—
Package / Case	SOD-123F	—
Operating Temperature - Junction	-65 to 175	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SM4003PL-TP is determined by strict adherence to the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Mounting Type: Surface Mount (required)
Package / Case: SOD-123F or mechanically compatible surface mount packages
RoHS Status: ROHS3 Compliant (required)
Moisture Sensitivity Level: MSL 1 (Unlimited) or equivalent

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max) @ If: Acceptable range 980 mV to 1.25 V @ rated current
Current - Reverse Leakage @ Vr: Lower values indicate superior performance; maximum acceptable 100 nA @ 200 V
Operating Temperature Range: Must support application requirements; SM4003PL-TP range is -65°C to 175°C
Speed Classification: Standard Recovery or Fast Recovery both acceptable for general-purpose applications

Substitute parts are grouped into two categories: Direct Electrical Equivalents (matching all primary criteria with identical or superior electrical performance) and Functional Alternatives (meeting primary criteria with acceptable performance trade-offs in secondary parameters).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	Ir @ Vr [µA]	Package	Tj (Max) [°C]	Product Status
SM4003PL-TP	Micro Commercial Co	200	1	1.1 @ 1 A	Standard Recovery >500ns	5 @ 200 V	SOD-123F	175	Not For New Designs
CDSW21-G	Comchip Technology	200	0.2	1.25 @ 0.2 A	Small Signal ≤200mA	5 @ 200 V	SOD-123	—	Active
CRH01(TE85L,Q,M)	Toshiba Semiconductor and Storage	200	1	0.98 @ 1 A	Fast Recovery ≤500ns	10 @ 200 V	SOD-123F	150	Active
CRH01(TE85R,Q,M)	Toshiba Semiconductor and Storage	200	1	0.98 @ 1 A	Fast Recovery ≤500ns	10 @ 200 V	SOD-123F	150	Active
DFLR1200-7	Diodes Incorporated	200	1	1.1 @ 1 A	Standard Recovery >500ns	3 @ 200 V	POWERDI®123	150	Active
GS1002FL_R1_00001	Panjit International Inc.	200	1	1.1 @ 1 A	Standard Recovery >500ns	1 @ 200 V	SOD-123F	150	Active
NHP120SFT3G	onsemi	200	1	1.0 @ 1 A	Fast Recovery ≤500ns	0.5 @ 200 V	SOD-123F	175	Active
NRVHP120SFT3G	onsemi	200	1	1.0 @ 1 A	Fast Recovery ≤500ns	0.5 @ 200 V	SOD-123F	175	Active
RF071MM2STR	Rohm Semiconductor	200	0.7	0.85 @ 0.7 A	Fast Recovery ≤500ns	10 @ 200 V	SOD-123F	150	Active
S1DFL	onsemi	200	1	1.1 @ 1 A	Standard Recovery >500ns	1 @ 200 V	SOD-123F	150	Not For New Designs

Engineering Selection Recommendations

Direct Electrical Equivalents (Recommended for 1:1 Replacement):

The following parts meet all primary substitution criteria and maintain electrical performance within acceptable tolerances of the SM4003PL-TP:

NHP120SFT3G (onsemi): Identical voltage and current ratings, SOD-123F package, superior reverse leakage performance (0.5 µA vs. 5 µA), extended junction temperature range (-65°C to 175°C matching original), Active product status, ROHS3 compliant. Fast Recovery characteristic provides improved switching performance.
NRVHP120SFT3G (onsemi): Electrically identical to NHP120SFT3G with automotive-grade qualification (AEC-Q101), suitable for applications requiring automotive reliability standards. Active product status, ROHS3 compliant.
GS1002FL_R1_00001 (Panjit International Inc.): Matches voltage, current, and forward voltage specifications, SOD-123F package, superior reverse leakage (1 µA vs. 5 µA), Active product status, ROHS3 compliant. Operating temperature range -50°C to 150°C is narrower than original.
CRH01(TE85L,Q,M) and CRH01(TE85R,Q,M) (Toshiba Semiconductor and Storage): Both variants meet 200 V / 1 A specifications with improved forward voltage (0.98 V vs. 1.1 V), SOD-123F package, Fast Recovery characteristic, Active product status, ROHS3 compliant. Operating temperature maximum of 150°C is lower than original 175°C.

Functional Alternatives (Application-Dependent Substitution):

DFLR1200-7 (Diodes Incorporated): Meets 200 V / 1 A electrical requirements with matching forward voltage (1.1 V), superior reverse leakage (3 µA), PowerDI™ 123 package (mechanically compatible with SOD-123F footprint), Active product status, ROHS3 compliant. Operating temperature maximum of 150°C requires verification against application requirements.
S1DFL (onsemi): Electrically equivalent to SM4003PL-TP with identical forward voltage and current ratings, SOD-123F package, superior reverse leakage (1 µA), but classified as "Not For New Designs." Suitable only for legacy system maintenance where original part sourcing is critical.

Not Recommended for Direct Substitution:

CDSW21-G (Comchip Technology): Current rating of 200 mA is insufficient for 1 A application requirements. Suitable only for applications with reduced current demands.
RF071MM2STR (Rohm Semiconductor): Current rating of 700 mA is below the 1 A requirement of SM4003PL-TP. Acceptable only where application current demand does not exceed 700 mA.

Compliance and Certification Status:

All recommended substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage practices. Parts with Active product status are preferred for new procurement to ensure long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q1: Can CDSW21-G replace SM4003PL-TP in my application?

A: CDSW21-G is not suitable as a direct replacement. While it matches the 200 V reverse voltage rating, its current rating of 200 mA is significantly below the SM4003PL-TP specification of 1 A. Use CDSW21-G only if your application current requirement is confirmed to be 200 mA or less.

Q2: What is the difference between NHP120SFT3G and NRVHP120SFT3G?

A: Both parts are electrically identical with 200 V / 1 A ratings and SOD-123F packaging. NRVHP120SFT3G carries automotive-grade qualification (AEC-Q101) and is designated for automotive applications. NHP120SFT3G is the standard industrial version. Select NRVHP120SFT3G if your application requires automotive reliability standards.

Q3: Why do some substitute parts have lower maximum junction temperatures than SM4003PL-TP?

A: SM4003PL-TP specifies -65°C to 175°C junction temperature range. Several substitutes (CRH01 variants, DFLR1200-7, GS1002FL_R1_00001, S1DFL) specify maximum temperatures of 150°C. Verify that your application's thermal environment does not exceed the substitute part's maximum rating. If sustained operation above 150°C is required, select NHP120SFT3G or NRVHP120SFT3G, which maintain the 175°C maximum.

Q4: What does "Fast Recovery" versus "Standard Recovery" mean for rectifier diodes?

A: Recovery speed refers to how quickly the diode transitions from conducting to blocking state. Standard Recovery (>500 ns) is suitable for general-purpose rectification and low-frequency applications. Fast Recovery (≤500 ns) provides improved switching characteristics and reduced switching losses, beneficial in higher-frequency circuits. Both are acceptable for SM4003PL-TP replacement unless your application specifically requires one characteristic.

Q5: Are the Toshiba CRH01 variants (TE85L and TE85R) interchangeable?

A: CRH01(TE85L,Q,M) and CRH01(TE85R,Q,M) are electrically identical with identical electrical specifications. The designations TE85L and TE85R refer to internal lead frame orientation and do not affect electrical performance. They are interchangeable from an electrical standpoint; verify mechanical orientation requirements for your specific PCB layout.

Q6: Can I use RF071MM2STR as a substitute if my circuit only draws 700 mA?

A: RF071MM2STR is suitable only if your application current requirement is confirmed to be 700 mA or less. The part is rated for 700 mA average rectified current, below the SM4003PL-TP 1 A specification. Exceeding the rated current will cause excessive heat generation and potential device failure. Confirm actual circuit current draw before substitution.

Q7: What is the significance of "ROHS3 Compliant" and "MSL 1 (Unlimited)"?

A: ROHS3 Compliant indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. MSL 1 (Unlimited) indicates the part has unlimited shelf life and does not require special moisture-controlled storage or baking procedures before soldering. All recommended substitutes maintain these compliance levels, ensuring compatibility with standard manufacturing processes.

Q8: Why is SM4003PL-TP marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status and the manufacturer is no longer actively producing it for new applications. Existing inventory may be available, but long-term supply cannot be guaranteed. For new designs, select from Active-status alternatives such as NHP120SFT3G, NRVHP120SFT3G, or GS1002FL_R1_00001 to ensure sustained component availability.

Q9: What package compatibility should I verify when substituting?

A: SM4003PL-TP uses SOD-123F package. Most recommended substitutes also use SOD-123F, ensuring direct PCB footprint compatibility. DFLR1200-7 uses PowerDI™ 123 package, which is mechanically compatible with SOD-123F footprints but verify pin assignment and thermal pad requirements for your specific PCB design. CDSW21-G uses SOD-123 package (slightly different from SOD-123F); verify footprint compatibility before use.

Q10: How do I select between multiple equivalent parts?

A: Prioritize based on: (1) Product Status—select Active parts for new procurement; (2) Availability—verify inventory levels with your supplier; (3) Temperature Range—confirm the substitute's maximum junction temperature meets your application requirements; (4) Reverse Leakage—lower values (NHP120SFT3G at 0.5 µA) indicate superior performance; (5) Cost and Lead Time—compare pricing and delivery schedules with your procurement team. For automotive applications, specify NRVHP120SFT3G (AEC-Q101 qualified).

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