DL4934-13 Equivalent & Substitute Parts

Part Overview

The DL4934-13 is a general-purpose rectifier diode rated for 100 V DC reverse voltage and 1 A average rectified current in a surface mount MELF (DO-213AB) package. This component is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing production and repair applications. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while meeting modern 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	1.2 V @ 1 A	V
Reverse Recovery Time (trr)	200	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Capacitance @ Vr, F	15	pF @ 4V, 1MHz
Operating Temperature - Junction	-65 to 150	°C
Package / Case	DO-213AB, MELF (Glass)	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory electrical and mechanical parameters:

Voltage Rating: Minimum 100 V DC reverse voltage (Vr)
Current Rating: Minimum 1 A average rectified current (Io)
Package: DO-213AB / MELF surface mount form factor
Forward Voltage: Maximum 1.2 V @ 1 A (allows higher performance alternatives with lower Vf)
Reverse Leakage: Maximum 5 µA @ 100 V (allows lower leakage alternatives)
Recovery Speed: Fast recovery ≤ 500 ns or standard recovery > 500 ns (both acceptable)
Operating Temperature: Minimum -65°C to 150°C junction temperature range

All identified substitute parts meet or exceed these parameters. Substitute parts with improved specifications (lower forward voltage, faster recovery time, lower leakage current, higher temperature rating, or RoHS3 compliance) are functionally compatible and represent direct replacements.

Parameter Comparison

Parameter	DL4934-13	1N6479-E3/96	BYM10-100-E3/96	BYM10-100-E3/97	BYM12-100-E3/96	EGL41B-E3/96	GL41B-E3/96	GL41BHE3/96
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A	1.0 V @ 1 A	1.0 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A
Speed	Fast Recovery ≤ 500ns	Standard Recovery > 500ns	Standard Recovery > 500ns	Standard Recovery > 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Standard Recovery > 500ns	Standard Recovery > 500ns
Reverse Recovery Time (trr)	200 ns	—	—	—	50 ns	50 ns	—	—
Current - Reverse Leakage @ Vr	5 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V
Capacitance @ Vr, F	15 pF @ 4V, 1MHz	8 pF @ 4V, 1MHz	8 pF @ 4V, 1MHz	8 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz	8 pF @ 4V, 1MHz	8 pF @ 4V, 1MHz
Operating Temperature - Junction	-65 to 150°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C
Package / Case	DO-213AB, MELF	DO-213AB, MELF	DO-213AB, MELF	DO-213AB, MELF	DO-213AB, MELF	DO-213AB, MELF	DO-213AB, MELF	DO-213AB, MELF
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance, addressing the discontinuation status and regulatory requirements of the original DL4934-13. Selection among substitutes depends on application-specific performance priorities:

For applications requiring fast recovery characteristics: BYM12-100-E3/96 and EGL41B-E3/96 offer reverse recovery time of 50 ns with forward voltage of 1.0 V @ 1 A, representing the highest performance option.

For applications with standard recovery requirements: 1N6479-E3/96, BYM10-100-E3/96, BYM10-100-E3/97, GL41B-E3/96, and GL41BHE3/96 provide standard recovery characteristics with forward voltages between 1.0 V and 1.1 V @ 1 A.

For applications with reverse leakage sensitivity: BYM12-100-E3/96 and EGL41B-E3/96 maintain the original 5 µA @ 100 V leakage specification, while other substitutes specify 10 µA @ 100 V.

All substitute parts support the full operating temperature range of -65°C to 175°C, exceeding the original -65°C to 150°C specification. All substitute parts are available in active inventory with ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can BYM12-100-E3/96 directly replace DL4934-13 in all applications?

A: Yes. BYM12-100-E3/96 meets all mandatory electrical parameters: 100 V reverse voltage, 1 A current rating, DO-213AB package, and surface mount configuration. It provides improved specifications including lower forward voltage (1.0 V vs. 1.2 V), faster recovery time (50 ns vs. 200 ns), and extended temperature range (-65°C to 175°C vs. -65°C to 150°C).

Q: What is the difference between fast recovery and standard recovery diodes in this group?

A: Fast recovery diodes (BYM12-100-E3/96, EGL41B-E3/96) have reverse recovery time ≤ 500 ns, specified at 50 ns. Standard recovery diodes (1N6479-E3/96, BYM10-100-E3/96, GL41B-E3/96, GL41BHE3/96) have reverse recovery time > 500 ns. Fast recovery diodes are suitable for high-frequency switching applications; standard recovery diodes are suitable for general rectification and lower-frequency applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are ROHS3 compliant, whereas the original DL4934-13 is RoHS non-compliant. This compliance upgrade is beneficial for applications subject to RoHS regulations.

Q: Does package compatibility require any PCB layout changes?

A: No. All substitute parts use the DO-213AB MELF surface mount package, identical to the original DL4934-13. No PCB layout modifications are required.

Q: Which substitute offers the lowest forward voltage drop?

A: BYM12-100-E3/96 and EGL41B-E3/96 both specify 1.0 V @ 1 A forward voltage, representing the lowest among all options. This reduces power dissipation compared to the original 1.2 V specification.

Q: Can I use GL41B-E3/96 in high-temperature applications?

A: Yes. GL41B-E3/96 supports operating junction temperatures from -65°C to 175°C, exceeding the original -65°C to 150°C range by 25°C. This extended range accommodates high-temperature circuit environments.

Q: What is the difference between BYM10-100-E3/96 and BYM10-100-E3/97?

A: Both parts are electrically identical with 100 V reverse voltage, 1 A current, 1.1 V forward voltage, and standard recovery characteristics. The difference is packaging: BYM10-100-E3/96 is supplied in Cut Tape & Digi-Reel format, while BYM10-100-E3/97 is supplied in Tape & Reel format. Selection depends on assembly process requirements.

Q: Is reverse leakage current a critical factor for substitution?

A: Reverse leakage becomes critical in high-impedance or precision analog circuits. The original DL4934-13 specifies 5 µA @ 100 V. BYM12-100-E3/96 and EGL41B-E3/96 maintain this specification. Other substitutes specify 10 µA @ 100 V, which is acceptable for most general-purpose rectification applications but may require evaluation in sensitive circuits.

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