DS135AE Equivalent & Substitute Parts

Part Overview

The DS135AE is a general-purpose rectifier diode manufactured by onsemi, rated for 100 V DC reverse voltage and 1 A average rectified current in a DO-204AL (DO-41) axial through-hole package. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. Substitute parts must maintain electrical performance across voltage, current, and thermal specifications while accommodating packaging and compliance requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 1 A
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	10	µA @ 100 V
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction (Max)	150	°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the DS135AE is determined by strict equivalence across the following electrical and mechanical parameters:

Reverse Voltage Rating: Minimum 100 V DC
Average Rectified Current: Minimum 1 A
Forward Voltage Drop: Maximum 1 V at 1 A
Recovery Speed: Standard recovery classification (>500 ns at >200 mA)
Package Type: DO-204AL / DO-41 axial through-hole configuration
Mounting: Through-hole compatible with existing PCB layouts
Thermal Rating: Operating junction temperature support to 150°C minimum

The 1N4002G from Taiwan Semiconductor Corporation meets all specified electrical parameters and maintains package compatibility. This part is classified as active, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Parameter	DS135AE (onsemi)	1N4002G (Taiwan Semiconductor)	Match
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	✓ Equal
Current - Average Rectified (Io)	1 A	1 A	✓ Equal
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	1 V @ 1 A	✓ Equal
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	✓ Equal
Current - Reverse Leakage @ Vr	10 µA @ 100 V	5 µA @ 100 V	✓ Superior
Mounting Type	Through Hole	Through Hole	✓ Equal
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	✓ Equal
Operating Temperature - Junction	150°C (Max)	-55°C ~ 150°C	✓ Compatible
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓ Equal
REACH Status	REACH Unaffected	REACH Unaffected	✓ Equal
ECCN	EAR99	EAR99	✓ Equal
HTSUS	8541.10.0080	8541.10.0080	✓ Equal

Engineering Selection Recommendations

The 1N4002G is the direct substitute for the obsolete DS135AE. Selection is based on the following factors:

Product Status: The DS135AE is obsolete, creating supply and support discontinuity. The 1N4002G maintains active product status with established manufacturing and distribution channels.

Electrical Equivalence: All critical electrical parameters—reverse voltage, forward current, forward voltage drop, and recovery speed—are identical between the two parts. Reverse leakage current in the 1N4002G is superior (5 µA versus 10 µA), providing improved performance margin.

Compliance and Certifications: Both parts share identical REACH, ECCN, and HTSUS classifications, ensuring regulatory and trade compliance continuity. The 1N4002G carries RoHS3 compliance, meeting modern environmental standards.

Package Compatibility: The DO-204AL (DO-41) axial through-hole package is identical, permitting direct PCB layout substitution without redesign.

Thermal Performance: The 1N4002G supports the required 150°C maximum junction temperature and extends the operating range to -55°C, providing enhanced thermal margin.

Frequently Asked Questions (FAQ)

Q: Can the 1N4002G be used as a direct replacement for the DS135AE without circuit modification?

A: Yes. The 1N4002G is electrically and mechanically equivalent. All critical parameters—reverse voltage (100 V), forward current (1 A), forward voltage drop (1 V @ 1 A), and package type (DO-204AL axial)—are identical. No circuit redesign is required.

Q: What is the difference in reverse leakage current between these parts?

A: The DS135AE specifies 10 µA reverse leakage at 100 V, while the 1N4002G specifies 5 µA at the same conditions. The 1N4002G exhibits lower leakage, which is advantageous in high-impedance circuits but does not affect compatibility in standard applications.

Q: Are there packaging differences between the DS135AE and 1N4002G?

A: Both parts use the DO-204AL (DO-41) axial through-hole package. The 1N4002G is supplied in Tape & Reel (TR) format for automated assembly, while the DS135AE packaging format is not specified. For manual assembly or reel conversion, this difference is not functionally significant.

Q: Does the 1N4002G meet current regulatory requirements?

A: Yes. The 1N4002G is RoHS3 compliant and maintains REACH Unaffected status, identical to the DS135AE. Both parts share the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: What is the operating temperature range of the 1N4002G?

A: The 1N4002G operates from -55°C to +150°C junction temperature. The DS135AE specifies a maximum of 150°C. The 1N4002G provides extended low-temperature capability, ensuring compatibility across wider environmental conditions.

Q: Is the 1N4002G available in sufficient quantity for production use?

A: Inventory data indicates 1,491 pieces of 1N4002G in new original stock, compared to 743 pieces of the obsolete DS135AE. The 1N4002G is classified as active product, ensuring ongoing availability through established supply channels.

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