DLE30C Equivalent & Substitute Parts

Part Overview

The DLE30C is a general-purpose rectifier diode manufactured by onsemi, rated for 200 V DC reverse voltage and 3 A average rectified current in a through-hole axial package (DO-201AD). This component is classified as obsolete, indicating it is no longer in active production. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing maintenance and repair operations for legacy systems utilizing this diode.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	980 mV @ 3 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	10 µA @ 400 V
Mounting Type	Through Hole
Package / Case	DO-201AD, Axial
Operating Temperature - Junction (Max)	150°C
Technology	Standard

Substitute Part Grouping Explanation

Substitution of the DLE30C is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 3 A minimum
Mounting Type: Through Hole
Package / Case: DO-201AD, Axial

Secondary Compatibility Factors:

Speed Classification: Fast Recovery ≤ 500ns preferred for functional equivalence
Reverse Recovery Time (trr): ≤ 50 ns acceptable
Operating Temperature - Junction: ≥ 150°C preferred
Forward Voltage (Vf): ≤ 1.2 V @ 3 A acceptable

Substitute parts meeting all primary criteria and most secondary criteria are classified as direct equivalents. Parts exceeding current ratings (5 A) remain compatible but represent over-specification. Parts with standard recovery characteristics (> 500ns) are functionally compatible but exhibit different switching performance.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	trr	Tj (Max)	Product Status	RoHS Status
DLE30C	onsemi	200 V	3 A	980 mV @ 3 A	Fast Recovery ≤ 500ns	35 ns	150°C	Obsolete	Not Specified
EGP30D	onsemi	200 V	3 A	950 mV @ 3 A	Fast Recovery ≤ 500ns	50 ns	150°C	Not For New Designs	ROHS3 Compliant
1N5402-E3/54	Vishay General Semiconductor - Diodes Division	200 V	3 A	1.2 V @ 3 A	Standard Recovery > 500ns	Not Specified	150°C	Active	ROHS3 Compliant
HER503GP-TP	Micro Commercial Co	200 V	5 A	1 V @ 5 A	Fast Recovery ≤ 500ns	50 ns	150°C	Not For New Designs	ROHS3 Compliant
STTH302	STMicroelectronics	200 V	3 A	950 mV @ 3 A	Fast Recovery ≤ 500ns	35 ns	175°C	Active	ROHS3 Compliant
STTH302RL	STMicroelectronics	200 V	3 A	950 mV @ 3 A	Fast Recovery ≤ 500ns	175°C	Active	ROHS3 Compliant	35 ns

Engineering Selection Recommendations

Preferred Substitutes (Active Product Status):

The STTH302 and STTH302RL manufactured by STMicroelectronics are the primary recommended substitutes for the obsolete DLE30C. Both parts maintain identical electrical specifications (200 V, 3 A, 35 ns recovery time) and are classified as Active products with ROHS3 compliance. The STTH302RL variant offers identical performance with alternative packaging configuration. These parts provide direct functional replacement with enhanced thermal capability (175°C junction temperature versus 150°C).

The 1N5402-E3/54 manufactured by Vishay General Semiconductor is an alternative substitute with Active product status and ROHS3 compliance. This part meets all primary substitution criteria (200 V, 3 A, DO-201AD package) but operates with standard recovery characteristics (> 500ns) rather than fast recovery. This difference affects switching performance in high-frequency applications but maintains compatibility for standard rectification circuits.

Secondary Substitutes (Not For New Designs Status):

The EGP30D manufactured by onsemi is a direct electrical equivalent with identical voltage and current ratings, fast recovery characteristics, and 150°C junction temperature. However, this part carries "Not For New Designs" status, limiting its application to legacy system support and repair operations.

The HER503GP-TP manufactured by Micro Commercial Co exceeds the current specification (5 A versus 3 A) while maintaining 200 V voltage rating and fast recovery performance. This over-specification is compatible but represents unnecessary component cost and thermal dissipation in applications requiring only 3 A capacity.

Compliance Considerations:

All substitute parts listed carry ROHS3 compliance certification. The DLE30C product status is not specified for RoHS compliance; however, all identified substitutes meet current environmental and regulatory requirements for new and legacy applications.

Frequently Asked Questions (FAQ)

Q: Can the STTH302 directly replace the DLE30C without circuit modification?

A: Yes. The STTH302 maintains identical voltage (200 V), current (3 A), and recovery time (35 ns) specifications. Both components use the DO-201AD axial package with identical pinout and mechanical dimensions. No circuit modification is required.

Q: What is the difference between STTH302 and STTH302RL?

A: Both parts are manufactured by STMicroelectronics with identical electrical specifications (200 V, 3 A, 35 ns recovery time, 175°C junction temperature). The designation difference indicates alternative packaging or tape configuration. Electrical performance and compatibility are equivalent.

Q: Why is the 1N5402-E3/54 listed as a substitute if it has standard recovery instead of fast recovery?

A: The 1N5402-E3/54 meets all primary substitution criteria: 200 V voltage rating, 3 A current rating, DO-201AD package, and through-hole mounting. Standard recovery (> 500ns) versus fast recovery (≤ 500ns) affects switching speed but does not prevent functional operation in rectification circuits. This part is suitable for applications where switching frequency does not require fast recovery performance.

Q: Is the HER503GP-TP suitable for applications requiring exactly 3 A?

A: Yes. The HER503GP-TP is rated for 5 A average rectified current, which exceeds the 3 A requirement of the DLE30C. Higher current rating does not prevent operation at lower current levels. The component will operate within specification at 3 A with reduced thermal stress.

Q: What is the significance of "Not For New Designs" status on the EGP30D and HER503GP-TP?

A: "Not For New Designs" indicates the manufacturer has discontinued active development and recommends against use in new product designs. These parts remain available for existing inventory and legacy system support but should not be selected for new applications. The STTH302 and 1N5402-E3/54 with "Active" status are preferred for new designs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (EGP30D, 1N5402-E3/54, HER503GP-TP, STTH302, STTH302RL) carry ROHS3 compliance certification. The original DLE30C does not specify RoHS status; however, all identified substitutes meet current environmental regulations.

Q: Can the DLE30C be used interchangeably with the STTH302 in existing circuits?

A: Yes. Both parts share identical electrical ratings (200 V, 3 A), fast recovery characteristics (35 ns), and DO-201AD axial package configuration. The STTH302 offers improved thermal capability (175°C versus 150°C junction temperature). No circuit redesign or component layout modification is required.

Q: What is the difference between forward voltage specifications across substitute parts?

A: Forward voltage varies between 950 mV and 1.2 V at 3 A across the substitute parts. This variation affects power dissipation and thermal performance but does not prevent functional substitution. The STTH302 and EGP30D at 950 mV match the DLE30C specification most closely. The 1N5402-E3/54 at 1.2 V represents acceptable variation for standard rectification applications.

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