DB2U30800L Equivalent & Substitute Parts

Part Overview

The DB2U30800L is a Schottky diode manufactured by Panasonic Electronic Components, rated for 30 V DC reverse voltage and 100 mA average rectified current in a surface mount USSMINI2-F2-B 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 performance within the specified voltage and current parameters while accommodating available packaging options.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	100	mA
Voltage - Forward (Vf) (Max) @ If	420 mV @ 100 mA	—
Reverse Recovery Time (trr)	1.3	ns
Current - Reverse Leakage @ Vr	120	µA @ 30 V
Mounting Type	Surface Mount	—
Package / Case	SOD-923	—
Operating Temperature - Junction (Max)	125	°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the DB2U30800L is determined by the following electrical and mechanical criteria:

Primary Substitution Criteria:

Technology: Schottky diode
Voltage - DC Reverse (Vr) (Max): Equal to or greater than 30 V
Current - Average Rectified (Io): Equal to or greater than 100 mA
Mounting Type: Surface Mount
Speed Classification: Small Signal ≤ 200 mA (Io), Any Speed

Secondary Compatibility Factors:

Package / Case compatibility with PCB layout requirements
Moisture Sensitivity Level: MSL 1 (Unlimited) preferred
Operating Temperature - Junction: Minimum 125°C

The substitute parts listed below satisfy the primary electrical criteria and maintain surface mount compatibility. Package variations (SOD-323, SOD-882, SOD-923) represent different physical footprints suitable for different PCB designs while maintaining electrical equivalence within the specified parameter ranges.

Parameter Comparison

Parameter	DB2U30800L (Panasonic)	RB521CM-30T2R (Rohm)	BAT54L,315 (NXP)	BAS140WE6327HTSA1 (Infineon)
Manufacturer	Panasonic Electronic Components	Rohm Semiconductor	NXP Semiconductors	Infineon Technologies
Product Status	Obsolete	Active	Active	Active
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V	40 V
Current - Average Rectified (Io)	100 mA	100 mA	200 mA	120 mA
Voltage - Forward (Vf) (Max) @ If	420 mV @ 100 mA	350 mV @ 10 mA	800 mV @ 100 mA	1 V @ 40 mA
Reverse Recovery Time (trr)	1.3 ns	—	—	100 ps
Current - Reverse Leakage @ Vr	120 µA @ 30 V	10 µA @ 10 V	2 µA @ 25 V	1 µA @ 30 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-923	SOD-923	SOD-882	SOD-323
Operating Temperature - Junction (Max)	125°C	150°C	150°C	150°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	—	ROHS3 Compliant	—	ROHS3 Compliant
REACH Status	—	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

RB521CM-30T2R (Rohm Semiconductor) - Closest Electrical Match

The RB521CM-30T2R provides the most direct substitution for the DB2U30800L. Both components share identical voltage and current ratings (30 V, 100 mA) and are packaged in SOD-923, eliminating PCB layout modifications. The RB521CM-30T2R is active in production with ROHS3 compliance and REACH unaffected status. Operating temperature rating of 150°C exceeds the original specification. This part is suitable for direct replacement in existing designs.

BAT54L,315 (NXP Semiconductors) - Higher Current Capacity

The BAT54L,315 maintains the 30 V voltage rating while providing doubled current capacity (200 mA). This part is active and REACH unaffected. The SOD-882 package differs from the original SOD-923, requiring PCB footprint verification. Forward voltage at 100 mA (800 mV) is higher than the original specification. This part is suitable for applications requiring increased current margin.

BAS140WE6327HTSA1 (Infineon Technologies) - Enhanced Voltage Rating

The BAS140WE6327HTSA1 provides a 40 V voltage rating with 120 mA current capacity, exceeding both original specifications. This part is active with ROHS3 compliance and REACH unaffected status. The SOD-323 package differs from the original SOD-923, requiring PCB footprint verification. Reverse recovery time of 100 ps is significantly faster than the original 1.3 ns. This part is suitable for applications requiring enhanced voltage margin or faster switching performance.

Frequently Asked Questions (FAQ)

Q: Can the RB521CM-30T2R directly replace the DB2U30800L without PCB modifications?

A: Yes. Both components use the SOD-923 package with identical pinout and footprint. No PCB layout changes are required for this substitution.

Q: What is the primary difference between the three substitute parts?

A: The RB521CM-30T2R matches the original voltage and current ratings exactly. The BAT54L,315 provides doubled current capacity (200 mA) in a different package (SOD-882). The BAS140WE6327HTSA1 provides higher voltage rating (40 V) and faster switching (100 ps trr) in a smaller package (SOD-323).

Q: Are all substitute parts RoHS compliant?

A: The RB521CM-30T2R and BAS140WE6327HTSA1 are ROHS3 compliant. The BAT54L,315 RoHS status is not specified in the provided data.

Q: Which substitute part has the lowest reverse leakage current?

A: The BAS140WE6327HTSA1 has the lowest reverse leakage at 1 µA @ 30 V, compared to 120 µA for the original DB2U30800L.

Q: Can I use the BAT54L,315 or BAS140WE6327HTSA1 if my PCB is designed for SOD-923?

A: No. The BAT54L,315 uses SOD-882 and the BAS140WE6327HTSA1 uses SOD-323 packages. PCB footprint modifications are required for these substitutions. The RB521CM-30T2R maintains SOD-923 compatibility.

Q: What is the operating temperature range for each substitute part?

A: The RB521CM-30T2R and BAT54L,315 both support maximum junction temperatures of 150°C. The BAS140WE6327HTSA1 supports -55°C to 150°C operating range. The original DB2U30800L maximum is 125°C.

Q: Are all parts classified as small signal diodes?

A: Yes. All parts, including the original DB2U30800L and all substitutes, are classified as Small Signal ≤ 200 mA (Io), Any Speed.

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