BAT30LFILM Equivalent & Substitute Parts

Part Overview

The BAT30LFILM is a Schottky diode manufactured by STMicroelectronics, rated for 30V DC reverse voltage with 300mA average rectified current in a SOD-923 surface mount package. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and procurement needs. Substitute parts must maintain compatibility with the electrical specifications and mechanical form factor of the original component.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	300	mA
Voltage - Forward (Vf) (Max) @ If	530 mV @ 300 mA	mV
Technology	Schottky	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	5	µA @ 30 V
Package / Case	SOD-923	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the BAT30LFILM is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a DC reverse voltage rating of 30V to ensure safe operation within the original circuit design envelope.

Current Rating: The original part is rated for 300mA average rectified current. Substitute parts with equal or higher current ratings (200mA, 500mA, or 1A) are electrically compatible, as they can safely handle the specified load without exceeding thermal or electrical limits.

Technology: All substitutes employ Schottky diode technology, maintaining identical switching characteristics and forward voltage behavior within acceptable ranges.

Package Compatibility: The BAT30LFILM uses SOD-923 packaging. Substitute parts in SOD-523 packaging are mechanically compatible for surface mount applications, though PCB layout modifications may be required due to different footprint dimensions.

Speed Classification: Fast recovery diodes (≤ 500ns) are directly substitutable for the BAT30LFILM. Small signal diodes are also acceptable substitutes where switching speed requirements do not exceed their specified performance envelope.

Compliance: All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring regulatory and environmental compatibility.

Parameter Comparison

Parameter	BAT30LFILM	NSVR0230P2T5G	PMEG3002AEB,115	PMEG3005EB,115	PMEG3010EB,115	RB520S30,115
Manufacturer	STMicroelectronics	onsemi	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V	30 V	30 V	30 V
Current - Average Rectified (Io)	300 mA	200 mA	200 mA	500 mA	1 A	200 mA
Voltage - Forward (Vf) (Max) @ If	530 mV @ 300 mA	500 mV @ 200 mA	480 mV @ 200 mA	500 mV @ 500 mA	680 mV @ 1 A	600 mV @ 200 mA
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Small Signal ≤ 200mA (Io), Any Speed
Current - Reverse Leakage @ Vr	5 µA @ 30 V	10 µA @ 10 V	10 µA @ 10 V	500 µA @ 30 V	500 µA @ 30 V	1 µA @ 10 V
Package / Case	SOD-923	SOD-923	SOD-523	SOD-523	SOD-523	SOD-523
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction (Max)	150°C	125°C	125°C	150°C	150°C	150°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	—	Yes (AEC-Q100)	Yes (AEC-Q100)	Yes (AEC-Q100)	Yes (AEC-Q100)

Engineering Selection Recommendations

Direct Package Compatibility (SOD-923): The NSVR0230P2T5G from onsemi is the only substitute maintaining the original SOD-923 package form factor. This part is active in production with ROHS3 compliance. The 200mA current rating is lower than the original 300mA specification; selection of this part is appropriate for applications where the actual circuit current demand does not exceed 200mA.

Package Migration (SOD-523): The Nexperia USA Inc. parts (PMEG3002AEB,115, PMEG3005EB,115, PMEG3010EB,115, and RB520S30,115) employ SOD-523 packaging and require PCB layout modification. All four parts are active in production with ROHS3 compliance and automotive-grade AEC-Q100 qualification.

Current Rating Selection:

PMEG3002AEB,115 and RB520S30,115: 200mA rating, suitable for applications not exceeding 200mA
PMEG3005EB,115: 500mA rating, suitable for applications requiring current capacity between 300mA and 500mA
PMEG3010EB,115: 1A rating, suitable for applications requiring maximum current capacity

Temperature Considerations: NSVR0230P2T5G has a maximum junction temperature of 125°C, compared to 150°C for the original BAT30LFILM and most Nexperia alternatives. Applications operating near thermal limits should prioritize parts with 150°C maximum ratings.

Reverse Leakage: RB520S30,115 exhibits the lowest reverse leakage (1 µA @ 10 V), followed by the original part (5 µA @ 30 V). PMEG3005EB,115 and PMEG3010EB,115 exhibit higher reverse leakage (500 µA @ 30 V), which may impact low-power standby circuit performance.

Frequently Asked Questions (FAQ)

Q: Can NSVR0230P2T5G directly replace BAT30LFILM without PCB modification?

A: Yes. NSVR0230P2T5G maintains the SOD-923 package form factor and identical pinout. No PCB layout changes are required. However, the 200mA current rating must be verified against actual circuit requirements.

Q: What is the primary difference between SOD-923 and SOD-523 packages?

A: SOD-923 and SOD-523 are both surface mount packages but have different physical dimensions and footprints. SOD-523 is larger than SOD-923. Migration from SOD-923 to SOD-523 requires PCB redesign and component placement modification.

Q: Are the Nexperia parts (PMEG series and RB520S30) suitable for automotive applications?

A: Yes. All Nexperia substitute parts carry AEC-Q100 automotive qualification and are suitable for automotive-grade applications. NSVR0230P2T5G does not carry automotive qualification.

Q: How do forward voltage differences affect circuit performance?

A: Forward voltage variations between 480 mV and 680 mV across the substitute parts will result in different voltage drops across the diode during conduction. Applications with tight voltage regulation requirements should account for these differences in circuit design calculations.

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

A: RB520S30,115 exhibits the lowest reverse leakage at 1 µA @ 10 V, making it suitable for low-power standby applications where leakage current must be minimized.

Q: Can I use PMEG3010EB,115 (1A rating) in place of BAT30LFILM (300mA rating)?

A: Yes. PMEG3010EB,115 has a higher current rating and can safely handle 300mA operation. The higher rating provides additional design margin. However, PCB layout modification is required due to SOD-523 packaging.

Q: What is the impact of different speed classifications on substitution?

A: Fast recovery diodes (BAT30LFILM, PMEG3005EB,115, PMEG3010EB,115) are suitable for high-frequency switching applications. Small signal diodes (NSVR0230P2T5G, PMEG3002AEB,115, RB520S30,115) are suitable for lower-frequency or DC rectification applications. Speed classification must align with circuit switching frequency requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring regulatory and environmental compatibility with the original BAT30LFILM.

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