BAS40LP-7-79 Equivalent & Substitute Parts

Part Overview

The BAS40LP-7-79 is a Schottky diode manufactured by Diodes Incorporated, rated for 40 V DC reverse voltage and 200 mA average rectified current. This component is packaged in a 0402 (1006 Metric) surface mount configuration and features a forward voltage of 1 V at 40 mA with a reverse recovery time of 5 ns. The BAS40LP-7-79 is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 40 mA	V
Reverse Recovery Time (trr)	5	ns
Current - Reverse Leakage @ Vr	200 nA @ 30 V	nA
Capacitance @ Vr, F	2.3 pF @ 0V, 1MHz	pF
Package / Case	0402 (1006 Metric)	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BAS40LP-7-79 is determined by electrical and mechanical parameter equivalence. The critical parameters that define substitutability are:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 200 mA
Voltage - Forward (Vf) (Max) @ If: 1 V @ 40 mA
Reverse Recovery Time (trr): 5 ns
Current - Reverse Leakage @ Vr: 200 nA @ 30 V
Capacitance @ Vr, F: 2.3 pF @ 0V, 1MHz
Package / Case: 0402 (1006 Metric)
Mounting Type: Surface Mount
Technology: Schottky

All identified substitute parts maintain identical electrical performance specifications and physical packaging requirements. Substitutes are grouped based on product status and packaging configuration while maintaining full parameter compatibility.

Parameter Comparison

Parameter	BAS40LP-7-79 (Main)	BAS40LP-7 (Substitute)	BAS40LP-7-F (Substitute)
Manufacturer	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Technology	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V
Current - Average Rectified (Io)	200 mA	200 mA	200 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 40 mA	1 V @ 40 mA	1 V @ 40 mA
Reverse Recovery Time (trr)	5 ns	5 ns	5 ns
Current - Reverse Leakage @ Vr	200 nA @ 30 V	200 nA @ 30 V	200 nA @ 30 V
Capacitance @ Vr, F	2.3 pF @ 0V, 1MHz	2.3 pF @ 0V, 1MHz	2.3 pF @ 0V, 1MHz
Package / Case	0402 (1006 Metric)	0402 (1006 Metric)	0402 (1006 Metric)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 125°C	-55°C ~ 150°C
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

The BAS40LP-7-79 is classified as obsolete product status. Both substitute parts, BAS40LP-7 and BAS40LP-7-F, are active products with full electrical parameter equivalence to the main part.

BAS40LP-7: This substitute maintains all electrical specifications identical to the BAS40LP-7-79. The operating temperature range is -55°C to 125°C, which is narrower than the main part's -55°C to 150°C range. This part is supplied in Tape & Reel (TR) packaging configuration and has substantial inventory availability.

BAS40LP-7-F: This substitute maintains all electrical specifications identical to the BAS40LP-7-79, including the full operating temperature range of -55°C to 150°C. This part is active product status with high inventory availability.

Both substitutes are ROHS3 compliant and carry MSL rating of 1 (Unlimited), matching the compliance profile of the main part. Selection between substitutes depends on specific application temperature requirements and packaging format needs.

Frequently Asked Questions (FAQ)

Q: Can BAS40LP-7 be used as a direct replacement for BAS40LP-7-79?

A: BAS40LP-7 is electrically equivalent to BAS40LP-7-79 across all critical parameters including voltage rating, current rating, forward voltage, and reverse recovery time. The operating temperature range of BAS40LP-7 is -55°C to 125°C, compared to -55°C to 150°C for BAS40LP-7-79. Selection depends on whether the application requires operation above 125°C.

Q: What is the difference between BAS40LP-7 and BAS40LP-7-F?

A: Both parts are electrically identical with matching voltage, current, and switching characteristics. BAS40LP-7-F supports the full operating temperature range of -55°C to 150°C, while BAS40LP-7 is rated to -55°C to 125°C. Both are active products with ROHS3 compliance.

Q: Are the package dimensions identical for all three parts?

A: All three parts use the 0402 (1006 Metric) surface mount package with identical physical dimensions and land pattern requirements. They are mechanically interchangeable on PCB layouts.

Q: What is the significance of the obsolete status of BAS40LP-7-79?

A: Obsolete status indicates the part is no longer manufactured. BAS40LP-7 and BAS40LP-7-F are active products that provide full functional and electrical equivalence, ensuring design continuity and component availability.

Q: Do all three parts meet the same compliance standards?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry MSL rating of 1 (Unlimited). Compliance profiles are identical across all three parts.

Q: Which substitute should be selected for high-temperature applications?

A: BAS40LP-7-F supports the full operating temperature range of -55°C to 150°C and is suitable for applications requiring operation at elevated junction temperatures. BAS40LP-7 is limited to 125°C maximum junction temperature.

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