SD101A-TR Schottky Diode Equivalent & Substitute Parts

Part Overview

The SD101A-TR is an active Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates at 60 V DC reverse voltage with 30 mA average rectified current in a DO-35 through-hole package. The SD101A-TR is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1). Alternative equivalent parts are necessary when primary stock availability is limited, when automotive-grade qualification is required, or when application parameters permit operation within the electrical specifications of substitute devices.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	30	mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 15 mA	V
Current - Reverse Leakage @ Vr	200 nA @ 50 V	nA
Capacitance @ Vr, F	2 pF @ 0V, 1MHz	pF
Technology	Schottky	—
Package / Case	DO-204AH (DO-35)	—
Mounting Type	Through Hole	—
Operating Temperature - Junction (Max)	125	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SD101A-TR is determined by electrical parameter compatibility within the following criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 60 V
Current - Average Rectified (Io): Must equal or exceed 30 mA
Voltage - Forward (Vf) (Max) @ If: Must not exceed 1 V @ 15 mA
Package / Case: Must be DO-204AH (DO-35) axial through-hole
Technology: Schottky diode type
Mounting Type: Through Hole

Secondary Compatibility Factors:

RoHS compliance status
Operating temperature range
Current - Reverse Leakage characteristics
Capacitance specifications

Substitute parts are grouped into two categories: Parametric Equivalents (matching all primary electrical specifications) and Manufacturer Recommended Alternatives (meeting or exceeding primary specifications with potential variations in secondary parameters).

Parameter Comparison

Parameter	SD101A-TR (Main)	BAT83S-TR	1N5711	1N6263	BAT42
Manufacturer	Vishay	Vishay	Microchip	STMicroelectronics	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	70 V	60 V	30 V
Current - Average Rectified (Io)	30 mA	30 mA	33 mA	15 mA	200 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 15 mA	1 V @ 15 mA	1 V @ 15 mA	1 V @ 15 mA	1 V @ 200 mA
Current - Reverse Leakage @ Vr	200 nA @ 50 V	200 nA @ 60 V	200 nA @ 50 V	200 nA @ 50 V	500 nA @ 25 V
Capacitance @ Vr, F	2 pF @ 0V, 1MHz	1.6 pF @ 1V, 1MHz	2 pF @ 0V, 1MHz	2.2 pF @ 0V, 1MHz	7 pF @ 1V, 1MHz
Package / Case	DO-204AH (DO-35)	DO-204AH (DO-35)	DO-35 (DO-204AH)	DO-35	DO-35
Operating Temperature - Junction (Max)	125°C	125°C	150°C	200°C	125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Non-Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

BAT83S-TR (Parametric Equivalent)

The BAT83S-TR is a direct parametric equivalent to the SD101A-TR. Both devices share identical electrical specifications: 60 V reverse voltage, 30 mA average rectified current, and 1 V forward voltage at 15 mA. The BAT83S-TR carries automotive-grade qualification (AEC-Q101) and is ROHS3 compliant. This substitute is suitable for applications requiring automotive-qualified components or when Vishay BAT83 series availability is preferred. Current reverse leakage is specified at 60 V versus 50 V for the main part, and capacitance is marginally lower at 1.6 pF. Both devices operate at 125°C maximum junction temperature.

1N5711 (Manufacturer Recommended Alternative)

The 1N5711 from Microchip Technology exceeds the primary electrical specifications of the SD101A-TR with 70 V reverse voltage and 33 mA average rectified current. Forward voltage and reverse leakage characteristics match the main part. The 1N5711 operates at an extended temperature range of −65°C to 150°C, providing superior thermal performance. However, this device is RoHS non-compliant and should be selected only when RoHS compliance is not a design requirement. Inventory availability is substantial at 47,190 pieces.

1N6263 (Manufacturer Recommended Alternative)

The 1N6263 from STMicroelectronics meets the 60 V reverse voltage specification but provides only 15 mA average rectified current, which is below the 30 mA requirement of the SD101A-TR. This device is suitable only for applications where the actual circuit current demand does not exceed 15 mA. The 1N6263 offers extended operating temperature range (−65°C to 200°C) and is ROHS3 compliant. Selection of this part requires verification that application current requirements are satisfied at 15 mA maximum.

BAT42 (Not Recommended for Direct Substitution)

The BAT42 from STMicroelectronics does not meet the primary substitution criteria. The device is rated for only 30 V reverse voltage, which is insufficient for the 60 V specification of the SD101A-TR. Although the BAT42 provides higher current capacity (200 mA), the voltage limitation makes it unsuitable for direct replacement. This device should not be selected as a substitute for the SD101A-TR.

Frequently Asked Questions (FAQ)

Q: Can the BAT83S-TR replace the SD101A-TR in all applications?

A: Yes. The BAT83S-TR is a parametric equivalent with identical electrical specifications (60 V, 30 mA, 1 V forward voltage). Both devices are ROHS3 compliant and operate at 125°C maximum junction temperature. The BAT83S-TR includes automotive-grade qualification (AEC-Q101), making it suitable for applications requiring automotive certification.

Q: Is the 1N5711 a suitable substitute for the SD101A-TR?

A: The 1N5711 exceeds the electrical specifications of the SD101A-TR (70 V versus 60 V, 33 mA versus 30 mA) and is electrically compatible. However, the 1N5711 is RoHS non-compliant. Selection of this device is appropriate only when RoHS compliance is not required by design specifications or regulatory requirements.

Q: Why is the 1N6263 listed as a substitute if it only provides 15 mA current?

A: The 1N6263 meets the voltage specification (60 V) and forward voltage characteristics of the SD101A-TR. However, its 15 mA current rating is below the 30 mA specification of the main part. The 1N6263 is suitable only for applications where actual circuit current demand does not exceed 15 mA. Circuit analysis is required to confirm current compatibility before selection.

Q: Can the BAT42 replace the SD101A-TR?

A: No. The BAT42 is rated for only 30 V reverse voltage, which does not meet the 60 V requirement of the SD101A-TR. Although the BAT42 provides higher current capacity (200 mA), the insufficient voltage rating makes it unsuitable for direct substitution.

Q: Are all substitute parts available in the same DO-35 package?

A: Yes. All listed substitute parts (BAT83S-TR, 1N5711, 1N6263, and BAT42) are packaged in DO-204AH (DO-35) axial through-hole format, matching the mechanical package of the SD101A-TR. No PCB layout modifications are required for substitution.

Q: What is the difference between the SD101A-TR and BAT83S-TR in terms of compliance?

A: Both devices are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1). The BAT83S-TR includes automotive-grade qualification (AEC-Q101), which the SD101A-TR does not specify. Selection of the BAT83S-TR is required for applications with automotive qualification requirements.

Q: Which substitute offers the widest operating temperature range?

A: The 1N6263 offers the widest operating temperature range at −65°C to 200°C, compared to 125°C maximum for the SD101A-TR, BAT83S-TR, and BAT42. The 1N5711 operates to 150°C maximum. Extended temperature range may be beneficial for high-temperature applications, provided current requirements do not exceed the device rating.

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