SS24HE3_A/I Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS24HE3_A/I is an active Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 40 V DC reverse voltage and 2 A average rectified current. The device is packaged in DO-214AA (SMB) surface mount configuration and qualifies for automotive applications under AEC-Q101 certification. This part is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or manufacturer availability while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	500	mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	400	µA @ 40 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-65 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SS24HE3_A/I are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 2 A
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: DO-214AA, SMB
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Secondary Compatibility Factors:

Operating Temperature Range: -65°C to 150°C (minimum)
RoHS3 Compliance
MSL 1 (Unlimited)

Parts are grouped as parametric equivalents when all primary criteria are met. Forward voltage (Vf) and reverse leakage current (Ir) variations within the specified ranges do not preclude substitution compatibility. Packaging format (Tape & Reel or Cut Tape) does not affect electrical substitutability but may influence procurement and assembly workflows.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 2A [mV]	Ir @ 40V [µA]	Speed	Temp Range [°C]	Package	Packaging Format
SS24HE3_A/I	Vishay	40	2	500	400	Fast Recovery ≤ 500ns	-65 to 150	DO-214AA, SMB	Tape & Reel (TR)
SS24HE3_A/H	Vishay	40	2	500	400	Fast Recovery ≤ 500ns	-65 to 150	DO-214AA, SMB	Tape & Reel (TR)
STPS2L40U	STMicroelectronics	40	2	430	220	Fast Recovery ≤ 500ns	-65 to 150	DO-214AA, SMB	Cut Tape (CT) & Digi-Reel®
B240-13-F	Diodes Incorporated	40	2	500	500	Fast Recovery ≤ 500ns	-65 to 150	DO-214AA, SMB	Cut Tape (CT) & Digi-Reel®
B240Q-13-F	Diodes Incorporated	40	2	500	500	Fast Recovery ≤ 500ns	-65 to 150	DO-214AA, SMB	Tape & Reel (TR)
CMSH2-40 TR13 PBFREE	Central Semiconductor Corp	40	2	500	500	Fast Recovery ≤ 500ns	-65 to 150	DO-214AA, SMB	Tape & Reel (TR)

Engineering Selection Recommendations

Parametric Equivalents (Identical Electrical Characteristics):

SS24HE3_A/H is a direct parametric equivalent to SS24HE3_A/I, both manufactured by Vishay with identical electrical specifications. Both parts carry AEC-Q101 automotive qualification and ROHS3 compliance. Selection between these variants is determined by packaging format availability and inventory status.

Manufacturer Alternatives:

STPS2L40U (STMicroelectronics) meets all primary substitution criteria with improved forward voltage performance (430 mV vs. 500 mV @ 2 A) and lower reverse leakage current (220 µA vs. 400 µA @ 40 V). This part is available in Cut Tape and Digi-Reel® packaging formats. STPS2L40U does not carry explicit automotive grade designation in the provided specifications.

B240Q-13-F (Diodes Incorporated) is a parametric equivalent with AEC-Q101 automotive qualification and Tape & Reel packaging. This part carries identical electrical ratings to the main part with higher reverse leakage current (500 µA).

B240-13-F (Diodes Incorporated) provides parametric equivalence in Cut Tape format without explicit automotive grade designation in the provided specifications.

CMSH2-40 TR13 PBFREE (Central Semiconductor Corp) is a parametric equivalent available in Tape & Reel format with identical electrical specifications and lower capacitance (150 pF vs. unspecified for main part).

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity level. Parts with explicit AEC-Q101 qualification (SS24HE3_A/H, B240Q-13-F) are suitable for automotive applications requiring this certification. Selection of non-automotive-qualified alternatives requires design review confirmation that automotive qualification is not a mandatory requirement.

Frequently Asked Questions (FAQ)

Q: Can SS24HE3_A/H be used as a direct replacement for SS24HE3_A/I?

A: Yes. SS24HE3_A/H is a parametric equivalent with identical electrical specifications, voltage rating, current rating, forward voltage, reverse leakage, and operating temperature range. Both parts are manufactured by Vishay and carry AEC-Q101 automotive qualification. The difference is packaging format (both Tape & Reel) and inventory availability.

Q: What is the difference between STPS2L40U and SS24HE3_A/I?

A: STPS2L40U meets all primary electrical substitution criteria (40 V, 2 A, fast recovery Schottky, DO-214AA SMB package). The key differences are: forward voltage is lower (430 mV vs. 500 mV @ 2 A), reverse leakage current is lower (220 µA vs. 400 µA @ 40 V), and STPS2L40U is manufactured by STMicroelectronics in Cut Tape format. STPS2L40U does not carry explicit automotive grade designation.

Q: Are B240-13-F and B240Q-13-F interchangeable?

A: Both parts are manufactured by Diodes Incorporated with identical electrical specifications. The primary difference is packaging format: B240-13-F is supplied in Cut Tape & Digi-Reel® format, while B240Q-13-F is supplied in Tape & Reel format. B240Q-13-F carries AEC-Q101 automotive qualification; B240-13-F does not have explicit automotive grade designation in the provided specifications.

Q: Can I substitute a non-automotive-qualified part for an automotive-qualified part?

A: Substitution of non-automotive-qualified parts for automotive-qualified parts requires design review and confirmation that AEC-Q101 certification is not a mandatory requirement for the application. Electrical parameter compatibility alone does not satisfy automotive qualification requirements.

Q: What is the significance of packaging format (Tape & Reel vs. Cut Tape)?

A: Packaging format affects procurement, storage, and assembly workflow but does not impact electrical substitutability. Tape & Reel format is suitable for automated pick-and-place assembly. Cut Tape format is suitable for manual assembly or lower-volume applications. Both formats contain identical components in the same DO-214AA SMB package.

Q: Does forward voltage variation affect substitutability?

A: Forward voltage variations within the specified maximum ratings do not preclude substitution. STPS2L40U exhibits lower forward voltage (430 mV vs. 500 mV @ 2 A), which may result in reduced power dissipation in the application. Circuit design must confirm that the lower forward voltage does not create unintended operational changes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance status and MSL 1 (Unlimited) moisture sensitivity level, matching the compliance profile of SS24HE3_A/I.

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