SS14-6HE3_A/I Equivalent & Substitute Parts

Part Overview

The SS14-6HE3_A/I is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 40 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This part is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing production and design requirements. The device meets automotive-grade specifications with AEC-Q101 qualification and operates across a junction temperature range of -65°C to 150°C.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	200	µA @ 40 V
Technology	Schottky	—
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SS14-6HE3_A/I is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 500 mV @ 1 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 200 µA @ 40 V
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Technology: Schottky

Grouping Categories:

Group 1: Direct Manufacturer Equivalents (Vishay) Parts SS14-6HE3_B/I, SS14-M3/5AT, SS14-M3/61T, SS14HM3_B/H, and SS14HM3_B/I are manufactured by Vishay and meet all electrical and mechanical parameters of the main part. These differ only in packaging format (bulk versus tape & reel) and product status (active versus discontinued).

Group 2: Parametric Equivalents (Alternative Manufacturers) Parts B140-13-F and B140Q-13-F from Diodes Incorporated and SS14-AU_R1_000A1 from Panjit International Inc. meet all critical electrical parameters and package specifications. These components are manufactured by different suppliers but maintain electrical and mechanical compatibility.

Group 3: Non-Equivalent Parts The RB050L-40TE25 (Rohm Semiconductor) and SS14 (SMC Diode Solutions) do not qualify as direct substitutes due to parameter deviations outside the allowed range and are listed for reference only.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Ir @ Vr [µA]	Package	Product Status	Grade	AEC-Q101
SS14-6HE3_A/I	Vishay	40	1	500 @ 1 A	200 @ 40 V	DO-214AC (SMA)	Discontinued	Automotive	Yes
SS14-6HE3_B/I	Vishay	40	1	500 @ 1 A	200 @ 40 V	DO-214AC (SMA)	Active	Automotive	Yes
SS14-M3/5AT	Vishay	40	1	500 @ 1 A	200 @ 40 V	DO-214AC (SMA)	Active	—	—
SS14-M3/61T	Vishay	40	1	500 @ 1 A	200 @ 40 V	DO-214AC (SMA)	Active	—	—
SS14HM3_B/H	Vishay	40	1	500 @ 1 A	200 @ 40 V	DO-214AC (SMA)	Active	Automotive	Yes
SS14HM3_B/I	Vishay	40	1	500 @ 1 A	200 @ 40 V	DO-214AC (SMA)	Active	Automotive	Yes
SS14-AU_R1_000A1	Panjit International Inc.	40	1	500 @ 1 A	200 @ 40 V	DO-214AC (SMA)	Active	Automotive	Yes
B140-13-F	Diodes Incorporated	40	1	500 @ 1 A	500 @ 40 V	DO-214AC (SMA)	Active	—	—
B140Q-13-F	Diodes Incorporated	40	1	500 @ 1 A	500 @ 40 V	DO-214AC (SMA)	Active	Automotive	Yes

Engineering Selection Recommendations

Primary Selection (Direct Replacement): SS14-6HE3_B/I is the direct successor to the discontinued SS14-6HE3_A/I. Both parts are manufactured by Vishay with identical electrical specifications, automotive-grade classification, and AEC-Q101 qualification. This part is currently active and maintains full compatibility with existing designs.

Alternative Vishay Options: SS14HM3_B/H and SS14HM3_B/I are active Vishay alternatives with identical electrical parameters and automotive qualification. These parts differ only in packaging format (tape & reel) and are suitable for high-volume production environments. SS14-M3/5AT and SS14-M3/61T are also active Vishay options with equivalent electrical specifications, available in tape & reel packaging.

Cross-Manufacturer Alternatives: SS14-AU_R1_000A1 (Panjit International Inc.) and B140Q-13-F (Diodes Incorporated) are parametrically equivalent alternatives from established manufacturers. Both maintain automotive-grade specifications and AEC-Q101 qualification. B140Q-13-F offers higher inventory availability (40,400 units) compared to other alternatives.

Non-Recommended Alternatives: B140-13-F lacks automotive-grade classification and AEC-Q101 qualification, making it unsuitable for automotive applications. RB050L-40TE25 and SMC SS14 exceed the specified reverse leakage current and forward voltage parameters and are not recommended as direct substitutes.

Frequently Asked Questions (FAQ)

Q: Can SS14-6HE3_B/I be used as a direct replacement for SS14-6HE3_A/I? A: Yes. Both parts are manufactured by Vishay with identical electrical specifications (40 V, 1 A, 500 mV forward voltage), automotive-grade classification, and AEC-Q101 qualification. The primary difference is product status: SS14-6HE3_A/I is discontinued while SS14-6HE3_B/I is active.

Q: What is the difference between SS14-6HE3_B/I and SS14-M3/5AT? A: Both parts are Vishay-manufactured with identical electrical parameters. The primary difference is packaging format: SS14-6HE3_B/I is supplied in bulk packaging, while SS14-M3/5AT is supplied in tape & reel (TR) format. Tape & reel packaging is standard for automated assembly processes.

Q: Are B140-13-F and B140Q-13-F interchangeable? A: Both parts meet the electrical specifications of the SS14-6HE3_A/I (40 V, 1 A, 500 mV forward voltage) and use the same DO-214AC (SMA) package. However, B140Q-13-F includes automotive-grade classification and AEC-Q101 qualification, while B140-13-F does not. For automotive applications, B140Q-13-F is the appropriate choice.

Q: What is the significance of the reverse leakage current difference between Vishay and Diodes Incorporated parts? A: The SS14-6HE3_A/I specifies 200 µA reverse leakage at 40 V, while B140-13-F and B140Q-13-F specify 500 µA at the same voltage. Both values are within acceptable ranges for Schottky diode applications. The lower leakage of Vishay parts may provide marginal advantages in low-power or high-impedance circuits.

Q: Can I use SS14-AU_R1_000A1 in place of SS14-6HE3_A/I? A: Yes. SS14-AU_R1_000A1 from Panjit International Inc. meets all critical electrical parameters (40 V, 1 A, 500 mV forward voltage), maintains automotive-grade classification, and carries AEC-Q101 qualification. The part is supplied in tape & reel format and is currently active.

Q: Why is RB050L-40TE25 not recommended as a substitute? A: RB050L-40TE25 is rated for 3 A average rectified current, exceeding the 1 A specification of the SS14-6HE3_A/I. Additionally, it specifies 1 mA reverse leakage at 40 V, which is significantly higher than the 200 µA specification of the original part. The product status is also listed as "Not For New Designs," making it unsuitable for new applications.

Q: What packaging formats are available for equivalent parts? A: Equivalent parts are available in two primary packaging formats: bulk packaging (SS14-6HE3_B/I) and tape & reel (TR) format (SS14-M3/5AT, SS14-M3/61T, SS14HM3_B/H, SS14HM3_B/I, SS14-AU_R1_000A1). Tape & reel format is standard for automated pick-and-place assembly, while bulk packaging is used for manual assembly or lower-volume applications.

Q: Are all recommended substitutes RoHS3 compliant? A: Yes. All recommended substitute parts (Vishay, Panjit, and Diodes Incorporated) are RoHS3 compliant with MSL rating of 1 (Unlimited), matching the environmental compliance profile of the original SS14-6HE3_A/I.

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