SS14-71CHE3_A/I Equivalent & Substitute Parts

Part Overview

The SS14-71CHE3_A/I is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 40 V 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 design support and procurement.

The part meets automotive-grade specifications with AEC-Q101 qualification and operates across a junction temperature range of -65°C to 150°C. RoHS3 compliance and unlimited moisture sensitivity level (MSL 1) support broad application deployment.

Key Parameters

Parameter	Value
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
Technology	Schottky
Package / Case	DO-214AC, SMA
Mounting Type	Surface Mount
Operating Temperature - Junction	-65°C ~ 150°C
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SS14-71CHE3_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)
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Operating Temperature - Junction: -65°C ~ 150°C

Grouping Logic:

Group 1: Direct Manufacturer Equivalents (Vishay) Parts SS14-71CHE3_B/I, SS14-M3/5AT, SS14-M3/61T, SS14HM3_B/H, and SS14HM3_B/I are manufactured by Vishay and maintain identical electrical specifications to the main part. These differ only in packaging format (tape & reel variants) and product status (active versus discontinued). All retain automotive-grade AEC-Q101 qualification.

Group 2: Cross-Manufacturer Parametric Equivalents Parts B140-13-F, B140Q-13-F, CMSH1-40 TR13 PBFREE, and CMSH1-40M TR13 PBFREE are manufactured by Diodes Incorporated and Central Semiconductor Corp respectively. These maintain identical reverse voltage, average rectified current, forward voltage, and recovery speed specifications. Reverse leakage current specifications differ (500 µA @ 40 V versus 200 µA @ 40 V), and capacitance values are provided for these alternatives. All are active products with RoHS3 compliance.

Group 3: Non-Equivalent Alternative Part SS14 (SMC Diode Solutions) exhibits different electrical characteristics (100 V reverse voltage, 850 mV forward voltage, 500 µA reverse leakage) and does not qualify as a direct substitute despite identical package format.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Ir @ Vr	Package	Product Status	Grade	AEC-Q101
SS14-71CHE3_A/I	Vishay	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	200 µA @ 40 V	DO-214AC (SMA)	Discontinued	Automotive	Yes
SS14-71CHE3_B/I	Vishay	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	200 µA @ 40 V	DO-214AC (SMA)	Active	Automotive	Yes
SS14-M3/5AT	Vishay	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	200 µA @ 40 V	DO-214AC (SMA)	Active	Not specified	Not specified
SS14-M3/61T	Vishay	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	200 µA @ 40 V	DO-214AC (SMA)	Active	Not specified	Not specified
SS14HM3_B/H	Vishay	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	200 µA @ 40 V	DO-214AC (SMA)	Active	Automotive	Yes
SS14HM3_B/I	Vishay	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	200 µA @ 40 V	DO-214AC (SMA)	Active	Automotive	Yes
B140-13-F	Diodes Incorporated	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	500 µA @ 40 V	DO-214AC (SMA)	Active	Not specified	Not specified
B140Q-13-F	Diodes Incorporated	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	500 µA @ 40 V	DO-214AC (SMA)	Active	Automotive	Yes
CMSH1-40 TR13 PBFREE	Central Semiconductor Corp	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	500 µA @ 40 V	DO-214AC (SMA)	Active	Not specified	Not specified
CMSH1-40M TR13 PBFREE	Central Semiconductor Corp	40 V	1 A	500 mV @ 1 A	Fast Recovery ≤ 500ns	500 µA @ 40 V	DO-214AC (SMA)	Active	Not specified	Not specified

Engineering Selection Recommendations

For Automotive Applications with AEC-Q101 Requirement:

Select from the following active parts that maintain automotive-grade qualification:

SS14-71CHE3_B/I (Vishay, direct manufacturer equivalent)
SS14HM3_B/H (Vishay, tape & reel packaging)
SS14HM3_B/I (Vishay, tape & reel packaging)
B140Q-13-F (Diodes Incorporated, cross-manufacturer equivalent)

These parts satisfy the original AEC-Q101 automotive qualification requirement and maintain identical electrical performance specifications.

For General Industrial Applications:

Active alternatives without automotive-grade specification include:

SS14-M3/5AT (Vishay, tape & reel, high inventory)
SS14-M3/61T (Vishay, tape & reel, high inventory)
B140-13-F (Diodes Incorporated, high inventory)
CMSH1-40 TR13 PBFREE (Central Semiconductor Corp)
CMSH1-40M TR13 PBFREE (Central Semiconductor Corp)

All maintain the critical electrical parameters: 40 V reverse voltage, 1 A average rectified current, 500 mV forward voltage, and fast recovery speed.

Packaging Considerations:

Tape & reel (TR) packaged variants (SS14-M3/5AT, SS14-M3/61T, SS14HM3_B/H, SS14HM3_B/I, CMSH1-40 TR13 PBFREE, CMSH1-40M TR13 PBFREE) support automated assembly processes. Cut tape (CT) and Digi-Reel® packaged variants (B140-13-F, B140Q-13-F) provide alternative handling formats.

Reverse Leakage Current Variance:

The main part SS14-71CHE3_A/I specifies 200 µA reverse leakage at 40 V. Cross-manufacturer alternatives (B140-13-F, B140Q-13-F, CMSH1-40 TR13 PBFREE, CMSH1-40M TR13 PBFREE) specify 500 µA at the same voltage. This difference does not affect primary rectification function but may impact applications with stringent leakage current requirements.

Frequently Asked Questions (FAQ)

Q: Can SS14-71CHE3_B/I directly replace SS14-71CHE3_A/I?

A: Yes. SS14-71CHE3_B/I is the direct manufacturer equivalent from Vishay, maintaining identical electrical specifications, automotive-grade qualification, and AEC-Q101 certification. The primary difference is product status (active versus discontinued).

Q: What is the difference between SS14-M3/5AT and SS14-M3/61T?

A: Both parts are Vishay Schottky diodes with identical electrical specifications (40 V, 1 A, 500 mV forward voltage). The designations reflect different tape & reel packaging configurations. Electrical performance is equivalent.

Q: Are B140-13-F and B140Q-13-F interchangeable?

A: Both parts are manufactured by Diodes Incorporated with identical electrical specifications. B140Q-13-F carries automotive-grade qualification and AEC-Q101 certification, while B140-13-F does not. For automotive applications, B140Q-13-F is the appropriate selection.

Q: Why do cross-manufacturer parts show higher reverse leakage current?

A: B140-13-F, B140Q-13-F, CMSH1-40 TR13 PBFREE, and CMSH1-40M TR13 PBFREE specify 500 µA reverse leakage at 40 V, compared to 200 µA for the Vishay SS14 series. This represents a difference in device characterization and manufacturing process. Both values remain within acceptable limits for standard rectification applications.

Q: Can I use SS14 (SMC Diode Solutions) as a substitute?

A: No. Although SS14 shares the same base product designation and DO-214AC package, it exhibits different electrical specifications: 100 V reverse voltage (versus 40 V), 850 mV forward voltage (versus 500 mV), and 500 µA reverse leakage (versus 200 µA). This part is not electrically equivalent.

Q: Which substitute part has the highest inventory availability?

A: SS14-M3/5AT (Vishay) maintains 31,312 pieces in stock, providing the highest availability among active equivalents. B140-13-F (Diodes Incorporated) offers 636,455 pieces, representing the largest cross-manufacturer inventory.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance status, consistent with the original SS14-71CHE3_A/I specification.

Q: What packaging format should I select for automated assembly?

A: Tape & reel (TR) packaged variants support automated pick-and-place assembly: SS14-M3/5AT, SS14-M3/61T, SS14HM3_B/H, SS14HM3_B/I, CMSH1-40 TR13 PBFREE, and CMSH1-40M TR13 PBFREE. Cut tape (CT) and Digi-Reel® formats (B140-13-F, B140Q-13-F) provide alternative handling for semi-automated or manual assembly processes.

Q: Do all substitute parts support the same operating temperature range?

A: Yes. All listed substitute parts operate across the junction temperature range of -65°C to 150°C, matching the original SS14-71CHE3_A/I specification.

Q: Is moisture sensitivity level (MSL) consistent across all parts?

A: Yes. All substitute parts maintain MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions during storage and handling.

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