DL4003-TP Equivalent & Substitute Parts

Part Overview

The DL4003-TP is a general-purpose rectifier diode rated for 200 V DC reverse voltage and 1 A average rectified current, manufactured by Micro Commercial Co in a surface mount MELF (DO-213AB) package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging and compliance certifications.

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	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Mounting Type	Surface Mount	—
Package / Case	DO-213AB, MELF	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the DL4003-TP is determined by the following mandatory parameters:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Mounting Type: Must be Surface Mount
Package / Case: Must be compatible with DO-213AB or MELF form factors
Moisture Sensitivity Level (MSL): Must be 1 (Unlimited) or equivalent

Secondary parameters that may vary between substitutes include forward voltage drop, recovery speed classification, reverse leakage current, and operating temperature range. All identified substitutes meet the mandatory electrical and mechanical requirements for direct replacement in applications designed for the DL4003-TP.

Parameter Comparison

Parameter	DL4003-TP	1N6480-E3/96	BYM11-200-E3/96	1N5614US	1N5615US	RGL41D/1
Manufacturer	Micro Commercial Co	Vishay General Semiconductor	Vishay General Semiconductor	Microchip Technology	Microchip Technology	Vishay General Semiconductor
Product Status	Obsolete	Active	Active	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A	1.3 V @ 1 A	1.3 V @ 3 A	1.6 V @ 3 A	1.3 V @ 1 A
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	5 µA @ 200 V	10 µA @ 200 V	5 µA @ 200 V	500 nA @ 200 V	500 nA @ 200 V	5 µA @ 200 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-213AB, MELF	DO-213AB, MELF (Glass)	DO-213AB, MELF (Glass)	SQ-MELF, A	SQ-MELF, A	DO-213AB, MELF (Glass)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Operating Temperature - Junction	Not specified	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 200°C	-65°C ~ 175°C	-65°C ~ 175°C

Engineering Selection Recommendations

Primary Substitutes (ROHS3 Compliant)

The 1N6480-E3/96 and BYM11-200-E3/96, both manufactured by Vishay General Semiconductor, are ROHS3 compliant and represent the most direct electrical equivalents to the DL4003-TP. The 1N6480-E3/96 maintains identical forward voltage characteristics (1.1 V @ 1 A) and standard recovery speed classification, making it the closest functional replacement. The BYM11-200-E3/96 offers fast recovery performance with equivalent reverse leakage specifications and is suitable for applications requiring reduced switching losses.

Secondary Substitutes (RoHS Non-Compliant)

The 1N5614US and 1N5615US, manufactured by Microchip Technology, meet all mandatory electrical and mechanical requirements but carry RoHS non-compliant status. These parts are available in active production with higher inventory levels. The 1N5614US provides standard recovery characteristics, while the 1N5615US offers fast recovery performance with significantly lower reverse leakage current (500 nA vs. 5 µA). Both operate at extended junction temperatures up to 200°C (1N5614US) or 175°C (1N5615US).

Alternative Substitute (RoHS Non-Compliant)

The RGL41D/1, manufactured by Vishay General Semiconductor, provides fast recovery performance with electrical characteristics matching the BYM11-200-E3/96. This part is available in active production status but carries RoHS non-compliant certification.

Compliance Considerations

Applications subject to ROHS3 compliance requirements must utilize either the 1N6480-E3/96 or BYM11-200-E3/96. Applications without RoHS constraints may select from all available substitutes based on performance requirements and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the 1N6480-E3/96 directly replace the DL4003-TP?

A: Yes. The 1N6480-E3/96 meets all mandatory electrical parameters: 200 V reverse voltage rating, 1 A average rectified current, surface mount MELF package, and MSL 1 moisture sensitivity. Forward voltage characteristics are identical at 1.1 V @ 1 A. Both components are ROHS3 compliant.

Q: What is the difference between standard recovery and fast recovery diodes in these substitutes?

A: Standard recovery diodes (DL4003-TP, 1N6480-E3/96, 1N5614US) exhibit recovery times exceeding 500 ns. Fast recovery diodes (BYM11-200-E3/96, 1N5615US, RGL41D/1) exhibit recovery times of 150 ns or less. Fast recovery types reduce switching losses and are suitable for higher-frequency applications.

Q: Are the 1N5614US and 1N5615US mechanically compatible with the DL4003-TP?

A: Both parts are surface mount diodes in SQ-MELF package format, which is mechanically compatible with DO-213AB MELF footprints. However, verification of PCB layout compatibility is required, as SQ-MELF and DO-213AB may have minor dimensional variations.

Q: Why do some substitutes show higher reverse leakage current than the DL4003-TP?

A: Reverse leakage current varies by manufacturer process technology and device design. The 1N6480-E3/96 specifies 10 µA @ 200 V compared to the DL4003-TP at 5 µA @ 200 V. This difference remains within acceptable limits for general-purpose rectification applications. The 1N5614US and 1N5615US specify significantly lower leakage at 500 nA @ 200 V.

Q: Which substitute offers the lowest forward voltage drop?

A: The 1N6480-E3/96 and DL4003-TP both specify 1.1 V @ 1 A forward voltage. The BYM11-200-E3/96 and RGL41D/1 specify 1.3 V @ 1 A. The 1N5614US specifies 1.3 V @ 3 A, and the 1N5615US specifies 1.6 V @ 3 A. Forward voltage selection depends on application power dissipation requirements.

Q: What is the significance of ROHS3 compliance for substitute selection?

A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements. Applications subject to regulatory or customer compliance mandates must use ROHS3-compliant parts: 1N6480-E3/96 or BYM11-200-E3/96. Applications without such constraints may select from all available substitutes.

Q: Can I use the 1N5614US in place of the 1N5615US?

A: Both parts meet the DL4003-TP electrical requirements and are manufactured by Microchip Technology. The 1N5614US provides standard recovery performance, while the 1N5615US provides fast recovery performance. Selection depends on application switching frequency and loss requirements. The 1N5614US operates at higher junction temperatures (200°C vs. 175°C).

Q: What packaging format should I specify for new designs?

A: For ROHS3-compliant applications, specify either the 1N6480-E3/96 (Tape & Reel) or BYM11-200-E3/96 (Tape & Reel) in DO-213AB MELF package. Both are available in active production with established supply chains. For non-compliant applications, the 1N5614US and 1N5615US offer higher inventory availability in bulk packaging.

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