Equivalent & Substitute Parts for DB2J40700L

Part Overview

The DB2J40700L is a Schottky diode manufactured by Panasonic Electronic Components, rated for 40 V DC reverse voltage and 500 mA average rectified current in a surface mount SMini2-F5-B package. This component is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain compatibility with the original electrical specifications and mechanical form factor to ensure direct replacement capability in existing circuit designs.

Key Parameters

Parameter	DB2J40700L
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	500 mA
Voltage - Forward (Vf) (Max) @ If	550 mV @ 500 mA
Technology	Schottky
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	3.6 ns
Package / Case	SC-90, SOD-323F
Mounting Type	Surface Mount
Operating Temperature - Junction (Max)	125°C
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the DB2J40700L is determined by the following critical parameters:

Mandatory Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V
Package / Case: SC-90, SOD-323F (surface mount)
Technology: Schottky diode

Current Rating Compatibility: Substitute parts are grouped by average rectified current (Io) capacity. The DB2J40700L operates at 500 mA. Substitutes with equal or greater current ratings at the specified voltage are direct replacements. Substitutes with lower current ratings are suitable only for applications where the circuit current demand does not exceed the substitute part's rating.

Performance Characteristics: Forward voltage drop (Vf), reverse recovery time (trr), and reverse leakage current are secondary parameters that influence circuit performance but do not prevent substitution when primary electrical and mechanical criteria are met.

Parameter Comparison

Parameter	DB2J40700L (Panasonic)	RB561VM-40TE-17 (Rohm)	PMEG4002EJ,115 (Nexperia)	RB501V-40TE-17 (Rohm)
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	500 mA	500 mA	200 mA	100 mA
Voltage - Forward (Vf) (Max) @ If	550 mV @ 500 mA	560 mV @ 500 mA	600 mV @ 200 mA	550 mV @ 100 mA
Technology	Schottky	Schottky	Schottky	Schottky
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed
Reverse Recovery Time (trr)	3.6 ns	Not specified	5 ns	Not specified
Current - Reverse Leakage @ Vr	100 µA @ 35 V	300 µA @ 40 V	10 µA @ 40 V	30 µA @ 10 V
Package / Case	SC-90, SOD-323F	SC-90, SOD-323F	SC-90, SOD-323F	SC-90, SOD-323F
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction (Max)	125°C	125°C	150°C	125°C
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: RB561VM-40TE-17 (Rohm Semiconductor)

The RB561VM-40TE-17 is the direct equivalent for the DB2J40700L. Both parts share identical voltage rating (40 V), current rating (500 mA), package type (SC-90, SOD-323F), and fast recovery speed classification. Forward voltage characteristics are comparable (560 mV vs. 550 mV at 500 mA). The RB561VM-40TE-17 is currently active in production with ROHS3 compliance and unlimited moisture sensitivity level. This part provides seamless substitution for applications requiring the full 500 mA current capacity.

Secondary Substitute: PMEG4002EJ,115 (Nexperia USA Inc.)

The PMEG4002EJ,115 maintains the 40 V voltage rating and SC-90, SOD-323F package compatibility. Current rating is reduced to 200 mA, limiting this substitute to circuits where maximum current demand does not exceed 200 mA. This part carries automotive-grade qualification (AEC-Q100) and operates at a higher maximum junction temperature (150°C). ROHS3 compliance and unlimited moisture sensitivity level are provided. Selection of this part requires verification that circuit current requirements remain within the 200 mA specification.

Tertiary Substitute: RB501V-40TE-17 (Rohm Semiconductor)

The RB501V-40TE-17 maintains the 40 V voltage rating and SC-90, SOD-323F package compatibility. Current rating is reduced to 100 mA, restricting this substitute to low-current applications only. Forward voltage at 100 mA matches the original specification (550 mV). This part is currently active with ROHS3 compliance. Selection requires confirmation that circuit current demand does not exceed 100 mA.

Frequently Asked Questions (FAQ)

Q: Can the RB561VM-40TE-17 be used as a direct replacement for the DB2J40700L?

A: Yes. The RB561VM-40TE-17 matches all critical parameters: 40 V reverse voltage rating, 500 mA current rating, SC-90 SOD-323F package, surface mount configuration, and fast recovery speed classification. Forward voltage characteristics are within acceptable tolerance (560 mV vs. 550 mV at 500 mA). This part is the primary equivalent.

Q: What is the difference between the RB561VM-40TE-17 and PMEG4002EJ,115?

A: Both parts share the 40 V voltage rating and SC-90 SOD-323F package. The primary difference is current rating: RB561VM-40TE-17 is rated for 500 mA, while PMEG4002EJ,115 is rated for 200 mA. The PMEG4002EJ,115 includes automotive qualification (AEC-Q100) and operates at a higher maximum junction temperature (150°C vs. 125°C). Selection depends on circuit current requirements.

Q: Can I use the RB501V-40TE-17 in place of the DB2J40700L?

A: The RB501V-40TE-17 is mechanically and electrically compatible at the 40 V voltage level and shares the SC-90 SOD-323F package. However, its 100 mA current rating is significantly lower than the original 500 mA specification. This substitute is suitable only for circuits where maximum current demand does not exceed 100 mA.

Q: Are all substitute parts in the same package?

A: Yes. All substitute parts use the SC-90, SOD-323F surface mount package, ensuring mechanical compatibility with the original PCB layout and assembly process.

Q: What compliance certifications apply to these substitutes?

A: The RB561VM-40TE-17 and RB501V-40TE-17 carry ROHS3 compliance. The PMEG4002EJ,115 carries ROHS3 compliance and automotive-grade AEC-Q100 qualification. All parts have unlimited moisture sensitivity level (MSL 1). The original DB2J40700L carries RoHS compliance.

Q: How do forward voltage characteristics compare across these parts?

A: Forward voltage varies with current rating. At 500 mA, the DB2J40700L specifies 550 mV and the RB561VM-40TE-17 specifies 560 mV. At 200 mA, the PMEG4002EJ,115 specifies 600 mV. At 100 mA, the RB501V-40TE-17 specifies 550 mV. These differences are typical for Schottky diodes and do not prevent substitution when current ratings are matched.

Q: What is the significance of reverse recovery time (trr)?

A: Reverse recovery time affects switching speed in high-frequency applications. The DB2J40700L specifies 3.6 ns. The PMEG4002EJ,115 specifies 5 ns. The RB561VM-40TE-17 and RB501V-40TE-17 do not provide trr specifications in the available data. For applications sensitive to switching transients, the PMEG4002EJ,115 with specified trr may be preferred over parts without this specification.

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