SSL24 Schottky Diode 40V 2A DO-214AA Equivalent & Substitute Parts

Part Overview

The SSL24 is an active-status Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 40V DC reverse voltage and 2A average rectified current in a surface-mount DO-214AA (SMB) package. This component is designed for fast-recovery applications requiring low forward voltage drop and rapid switching characteristics. Equivalent and substitute parts are identified to support design flexibility, supply chain alternatives, and application-specific requirements such as automotive qualification or alternative packaging formats.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	40	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) Maximum @ If	410	mV @ 2A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	400	µA @ 40V
Technology	Schottky	—
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 125	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SSL24 is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) Maximum: 40V (exact match required)
Current - Average Rectified (Io): 2A (exact match required)
Technology: Schottky (exact match required)
Package / Case: DO-214AA, SMB (exact match required for direct PCB compatibility)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)
Mounting Type: Surface Mount (exact match required)

Secondary Considerations:

Voltage - Forward (Vf) Maximum @ If: Substitute parts may exhibit higher forward voltage (up to 500 mV @ 2A) while maintaining functional equivalence
Current - Reverse Leakage @ Vr: Substitute parts may exhibit higher leakage (up to 500 µA @ 40V) while maintaining functional equivalence
Operating Temperature Range: Substitute parts may offer extended temperature ranges
Automotive Qualification (AEC-Q101): Available in qualified variants for automotive applications
Packaging Format: Alternatives available in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats

Parts that deviate from the primary criteria (such as 1A or 3A current ratings, or alternative package types like SMA) are classified as similar alternatives rather than direct substitutes and are presented separately.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Package	Temp Range [°C]	AEC-Q101	Packaging Format
SSL24	Taiwan Semiconductor Corporation	40	2	410 @ 2A	400 @ 40V	DO-214AA, SMB	-55 to 125	—	Tape & Reel (TR)
SSL24H	Taiwan Semiconductor Corporation	40	2	410 @ 2A	400 @ 40V	DO-214AA, SMB	-55 to 125	Yes	Tape & Reel (TR)
B240-13-F	Diodes Incorporated	40	2	500 @ 2A	500 @ 40V	DO-214AA, SMB	-65 to 150	—	Cut Tape (CT) & Digi-Reel®
B240Q-13-F	Diodes Incorporated	40	2	500 @ 2A	500 @ 40V	DO-214AA, SMB	-65 to 150	Yes	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Parametric Equivalent:

SSL24H (Taiwan Semiconductor Corporation) is the parametric equivalent variant of SSL24, offering identical electrical specifications with automotive-grade AEC-Q101 qualification. Selection of SSL24H is appropriate for applications requiring automotive-qualified components or when higher inventory availability is required (6922 pcs vs. 681 pcs for SSL24).

Functional Substitutes (40V, 2A, DO-214AA, SMB):

B240-13-F and B240Q-13-F (Diodes Incorporated) are functional substitutes meeting all primary substitution criteria. Both parts exhibit higher forward voltage (500 mV @ 2A vs. 410 mV @ 2A) and higher reverse leakage (500 µA @ 40V vs. 400 µA @ 40V). B240Q-13-F includes AEC-Q101 automotive qualification and Tape & Reel packaging, matching the SSL24 supply format. B240-13-F is supplied in Cut Tape & Digi-Reel® format. Both parts support extended operating temperature ranges (-65°C to 150°C vs. -55°C to 125°C).

Selection Basis:

SSL24H: Identical performance, automotive qualified, higher stock availability
B240Q-13-F: Automotive qualified, Tape & Reel format, extended temperature range, higher forward voltage and leakage acceptable for most applications
B240-13-F: Extended temperature range, higher stock availability (65,400 pcs), alternative packaging format

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can SSL24 be replaced with B240-13-F or B240Q-13-F?

A: Yes. Both B240-13-F and B240Q-13-F meet the primary substitution criteria: 40V reverse voltage, 2A average rectified current, Schottky technology, DO-214AA SMB package, and fast-recovery speed classification. The higher forward voltage (500 mV vs. 410 mV @ 2A) and reverse leakage (500 µA vs. 400 µA @ 40V) are within acceptable functional tolerances for most rectifier applications.

Q: What is the difference between SSL24 and SSL24H?

A: SSL24H is the automotive-qualified variant of SSL24, carrying AEC-Q101 certification. Electrical specifications are identical. SSL24H is appropriate for automotive applications or when automotive-grade reliability is required. Higher inventory availability (6922 pcs) also supports supply chain continuity.

Q: Can I use a 1A or 3A rated diode as a substitute?

A: No. The SSL24 is rated for 2A average rectified current. Substitution requires exact current rating match. Parts rated for 1A (such as B140BQ-13-F or CDBB140-HF) or 3A (such as B340BQ-13-F) are not direct substitutes and may result in circuit malfunction or component failure.

Q: What is the difference between DO-214AA (SMB) and DO-214AC (SMA) packages?

A: DO-214AA (SMB) and DO-214AC (SMA) are different surface-mount package outlines with different PCB footprints. B240A-13-F uses the DO-214AC (SMA) package and is not a direct substitute for SSL24, which requires DO-214AA (SMB) package. Package substitution requires PCB redesign.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance?

A: No. Packaging format (Tape & Reel, Cut Tape, or Digi-Reel®) affects supply and handling only, not electrical performance. SSL24 is supplied in Tape & Reel format. B240Q-13-F is also supplied in Tape & Reel format. B240-13-F is supplied in Cut Tape & Digi-Reel® format. All formats are compatible with standard pick-and-place assembly equipment.

Q: Are all recommended substitutes RoHS3 compliant?

A: Yes. SSL24, SSL24H, B240-13-F, and B240Q-13-F are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH unaffected status.

Q: What is the operating temperature range difference between SSL24 and B240Q-13-F?

A: SSL24 operates from -55°C to 125°C junction temperature. B240Q-13-F operates from -65°C to 150°C junction temperature. B240Q-13-F provides extended low-temperature and high-temperature capability, suitable for applications with wider thermal requirements.

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