BAT30F4 Equivalent & Substitute Parts

Part Overview

The BAT30F4 is a Schottky diode manufactured by STMicroelectronics, rated for 30 V DC reverse voltage with 300 mA average rectified current. This component is designed for surface mount applications in the 0201 package form factor. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical performance can be achieved within the specified voltage and current ratings, while maintaining compatibility with surface mount assembly processes and environmental compliance standards.

Key Parameters

Parameter	BAT30F4 Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	300	mA
Voltage - Forward (Vf) (Max) @ If	310 mV @ 10 mA	mV
Current - Reverse Leakage @ Vr	50	µA @ 30 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	-
Mounting Type	Surface Mount	-
Package / Case	0201 (0603 Metric)	-
Operating Temperature - Junction	-30 to 85	°C
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution eligibility for the BAT30F4 is determined by the following criteria:

Voltage Rating: All substitute parts must maintain a maximum DC reverse voltage (Vr) of 30 V or greater to ensure equivalent or superior voltage withstand capability.

Current Rating: Substitute parts must support the required average rectified current (Io). The BAT30F4 is rated for 300 mA. Parts rated at 200 mA or 100 mA represent reduced current capacity and are suitable only for applications requiring lower current levels.

Technology: All identified substitutes utilize Schottky diode technology, consistent with the base part.

Mounting and Package: All substitutes are surface mount components with package designations compatible with 0201 (0603 Metric) form factor specifications.

Compliance: All substitute parts maintain RoHS3 compliance and MSL 1 rating, ensuring compatibility with standard assembly and storage requirements.

Speed Classification: The BAT30F4 is classified as Fast Recovery (≤ 500ns, > 200mA). Substitute parts with Small Signal classification (≤ 200mA, Any Speed) are functionally equivalent for applications where the average rectified current does not exceed 200 mA.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) [mV]	Ir @ Vr [µA]	Speed	Tj (Max) [°C]	Package
BAT30F4	STMicroelectronics	30	300	310 @ 10mA	50 @ 30V	Fast Recovery ≤500ns	85	0201
NSR01L30NXT5G	onsemi	30	100	530 @ 100mA	3 @ 30V	Small Signal ≤200mA	150	2-DSN (0.60x0.30)
NSR02F30NXT5G	onsemi	30	200	550 @ 200mA	50 @ 30V	Small Signal ≤200mA	125	2-DSN (0.60x0.30)
NSR02L30NXT5G	onsemi	30	200	580 @ 200mA	3 @ 30V	Small Signal ≤200mA	150	2-DSN (0.60x0.30)
SDM02M30LP3-7B	Diodes Incorporated	30	100	450 @ 10mA	0.4 @ 30V	Small Signal ≤200mA	150	X3-DFN0603-2
SDM02U30CSP-7	Diodes Incorporated	30	200	500 @ 200mA	50 @ 30V	Small Signal ≤200mA	150	X3-WLB0603-2
SDM02U30LP3-7B	Diodes Incorporated	30	100	370 @ 10mA	4 @ 30V	Small Signal ≤200mA	150	X3-DFN0603-2

Engineering Selection Recommendations

Full Current Capacity Substitutes (300 mA): No substitute parts in the provided list maintain the full 300 mA current rating of the BAT30F4. The highest-rated substitute is SDM02U30CSP-7 at 200 mA.

200 mA Current Capacity Substitutes: NSR02F30NXT5G, NSR02L30NXT5G, and SDM02U30CSP-7 are suitable for applications requiring up to 200 mA average rectified current. All three maintain 30 V reverse voltage rating and RoHS3 compliance.

100 mA Current Capacity Substitutes: NSR01L30NXT5G, SDM02M30LP3-7B, and SDM02U30LP3-7B are suitable for applications requiring up to 100 mA average rectified current. All maintain 30 V reverse voltage rating and RoHS3 compliance.

Compliance and Certification: All substitute parts are RoHS3 compliant and carry MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Operating Temperature: Substitute parts from onsemi and Diodes Incorporated support maximum junction temperatures of 125°C to 150°C, exceeding the BAT30F4 specification of 85°C. This provides enhanced thermal margin in applications with elevated ambient conditions.

Forward Voltage Characteristics: Forward voltage drops vary across substitutes. SDM02U30LP3-7B exhibits the lowest forward voltage (370 mV @ 10 mA), while NSR02L30NXT5G exhibits the highest (580 mV @ 200 mA). Selection should account for power dissipation requirements in the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can NSR01L30NXT5G replace BAT30F4 in all applications?

A: NSR01L30NXT5G is suitable only for applications where the average rectified current requirement does not exceed 100 mA. The BAT30F4 is rated for 300 mA. If the application requires the full 300 mA capacity, NSR01L30NXT5G is not a direct substitute.

Q: What is the difference between Fast Recovery and Small Signal speed classifications?

A: Fast Recovery classification (BAT30F4) applies to diodes with recovery times ≤ 500 ns and average rectified current > 200 mA. Small Signal classification applies to diodes with average rectified current ≤ 200 mA and any recovery time. For applications operating below 200 mA, Small Signal diodes provide equivalent performance.

Q: Are all substitute parts compatible with the 0201 package footprint?

A: All substitute parts are designated for 0201 (0603 Metric) package classification. However, the actual supplier device packages vary (2-DSN, X3-DFN0603-2, X3-WLB0603-2). Physical footprint compatibility must be verified against the specific PCB layout and assembly equipment specifications.

Q: Which substitute offers the lowest forward voltage drop?

A: SDM02U30LP3-7B from Diodes Incorporated exhibits the lowest forward voltage at 370 mV @ 10 mA. This characteristic reduces power dissipation in applications with high switching frequency or continuous conduction.

Q: Do all substitutes maintain the same reverse leakage current as BAT30F4?

A: No. Reverse leakage current varies significantly across substitutes. BAT30F4 specifies 50 µA @ 30 V. NSR01L30NXT5G and NSR02L30NXT5G specify 3 µA @ 30 V, while SDM02M30LP3-7B specifies 0.4 µA @ 30 V. Lower leakage current reduces standby power consumption.

Q: Can I use a 200 mA rated substitute in a 300 mA application?

A: No. Using a component rated for 200 mA in an application requiring 300 mA average rectified current exceeds the component's electrical specification and creates reliability risk. The substitute must be rated equal to or greater than the application requirement.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All identified substitute parts carry RoHS3 compliance certification, consistent with the BAT30F4. All parts also maintain MSL 1 (Unlimited) moisture sensitivity level.

Q: Which substitute has the highest maximum junction temperature rating?

A: NSR01L30NXT5G, NSR02L30NXT5G, SDM02U30CSP-7, SDM02M30LP3-7B, and SDM02U30LP3-7B all support 150°C maximum junction temperature, compared to BAT30F4 at 85°C. This provides superior thermal performance in high-temperature environments.

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