SDM1U40CSP-7 Equivalent & Substitute Parts

Part Overview

The SDM1U40CSP-7 is an active Schottky diode manufactured by Diodes Incorporated, rated for 40 V DC reverse voltage with 500 mA average rectified current. This component is designed for surface mount applications in fast recovery rectification circuits. The part is ROHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), making it suitable for standard manufacturing environments.

Substitute parts are identified when electrical characteristics, mechanical compatibility, and regulatory compliance align with the original specification, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	500	mA
Voltage - Forward (Vf) (Max) @ If	460 mV @ 500 mA	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	75	µA @ 40 V
Capacitance @ Vr, F	35	pF @ 4V, 1MHz
Package / Case	2-XDFN	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

The SDM1U40CSP-7 qualifies for substitution with the SDM05U40CSP-7 based on the following criteria:

Electrical Parameter Alignment:

Identical DC reverse voltage rating: 40 V
Identical average rectified current: 500 mA
Identical forward voltage drop: 460 mV @ 500 mA
Identical fast recovery speed specification: ≤ 500ns, > 200mA (Io)
Identical reverse leakage current: 75 µA @ 40 V
Identical junction capacitance: 35 pF @ 4V, 1MHz

Mechanical Compatibility:

Identical package type: 2-XDFN
Identical mounting type: Surface Mount
Identical operating temperature range: -55°C to 150°C

Regulatory & Compliance Alignment:

Identical RoHS status: ROHS3 Compliant
Identical moisture sensitivity level: MSL 1 (Unlimited)
Identical REACH status: REACH Unaffected
Identical ECCN classification: EAR99
Identical HTSUS code: 8541.10.0070

Both parts are manufactured by Diodes Incorporated and maintain active product status, confirming ongoing availability and support.

Parameter Comparison

Parameter	SDM1U40CSP-7	SDM05U40CSP-7	Match
Manufacturer	Diodes Incorporated	Diodes Incorporated	✓
Technology	Schottky	Schottky	✓
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	✓
Current - Average Rectified (Io)	500 mA	500 mA	✓
Voltage - Forward (Vf) (Max) @ If	460 mV @ 500 mA	460 mV @ 500 mA	✓
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	✓
Current - Reverse Leakage @ Vr	75 µA @ 40 V	75 µA @ 40 V	✓
Capacitance @ Vr, F	35 pF @ 4V, 1MHz	35 pF @ 4V, 1MHz	✓
Package / Case	2-XDFN	2-XDFN	✓
Mounting Type	Surface Mount	Surface Mount	✓
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓
Product Status	Active	Active	✓

Engineering Selection Recommendations

The SDM05U40CSP-7 is a direct electrical and mechanical equivalent to the SDM1U40CSP-7. Both components are active products from Diodes Incorporated with identical electrical specifications, package geometry, and regulatory certifications.

Selection between these parts is based on inventory availability and supply chain considerations. The SDM1U40CSP-7 maintains 25,100 units in stock, while the SDM05U40CSP-7 maintains 29,436 units in stock. Both parts carry ROHS3 compliance and unlimited moisture sensitivity level, confirming suitability for standard manufacturing processes without additional handling requirements.

The identical forward voltage drop (460 mV @ 500 mA), reverse leakage current (75 µA @ 40 V), and fast recovery speed specification (≤ 500ns) ensure functional equivalence in rectification circuits. The 2-XDFN surface mount package is identical across both parts, eliminating any PCB layout or assembly process modifications.

Frequently Asked Questions (FAQ)

Q: Can the SDM05U40CSP-7 be used as a direct replacement for the SDM1U40CSP-7 in production?

A: Yes. The SDM05U40CSP-7 is electrically and mechanically equivalent to the SDM1U40CSP-7. All electrical parameters, package specifications, and regulatory certifications are identical. No circuit modifications or PCB layout changes are required.

Q: Are there differences in the supplier device package designation?

A: The supplier device packages differ: SDM1U40CSP-7 uses X3-WLB1406-2, while SDM05U40CSP-7 uses X3-WLB1006-2. Both packages are 2-XDFN form factors with identical electrical and mechanical characteristics. The package designation difference reflects internal supplier nomenclature and does not affect functional compatibility.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the SDM1U40CSP-7 and SDM05U40CSP-7 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity level. Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0070) classifications.

Q: What are the critical electrical parameters for substitution?

A: The critical parameters that must match for substitution are: DC reverse voltage (40 V), average rectified current (500 mA), forward voltage drop (460 mV @ 500 mA), fast recovery speed (≤ 500ns), reverse leakage current (75 µA @ 40 V), and junction capacitance (35 pF @ 4V, 1MHz). Both parts meet all these specifications identically.

Q: Is the operating temperature range the same?

A: Yes. Both parts operate across the identical junction temperature range of -55°C to 150°C, ensuring equivalent thermal performance in all operating environments.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The SDM1U40CSP-7 and SDM05U40CSP-7 are fully interchangeable. Identical electrical performance, package geometry, and regulatory compliance eliminate any design or manufacturing constraints for substitution.

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