SS32 R6 Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS32 R6 is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 20 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. This component is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for existing designs and production requirements.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 20 V
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SS32 R6 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

Voltage - DC Reverse (Vr) (Max): 20 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 500 mV @ 3 A
Current - Reverse Leakage @ Vr: 500 µA @ 20 V
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Mechanical Parameters (Must Match or Be Compatible):

Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C ~ 125°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Package Considerations: Substitutes may utilize different surface mount packages (DO-214AB/SMC or DO-214AC/SMA) provided the footprint and lead configuration are compatible with the application's printed circuit board design.

Parameter Comparison

Parameter	SS32 R6 (Main Part)	SS32 (MDD)	SS32H (Taiwan Semiconductor)
Manufacturer	Taiwan Semiconductor Corporation	MDD	Taiwan Semiconductor Corporation
Technology	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V
Current - Average Rectified (Io)	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 3 A	Not specified	500 mV @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 20 V	500 µA @ 20 V	500 µA @ 20 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AB, SMC	DO-214AC, SMA	DO-214AB, SMC
Operating Temperature - Junction	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics	Active	Active

Engineering Selection Recommendations

SS32H (Taiwan Semiconductor Corporation) is the primary substitute for the SS32 R6. Both components are manufactured by Taiwan Semiconductor Corporation, share identical electrical specifications, and utilize the same DO-214AB (SMC) package. The SS32H maintains full electrical and mechanical compatibility while offering active product status and AEC-Q101 automotive qualification. This substitute is suitable for direct replacement in existing designs without circuit board modification.

SS32 (MDD) is a secondary substitute option. This component meets all critical electrical parameters and operates within the same temperature range with equivalent RoHS and MSL compliance. However, the SS32 (MDD) utilizes a DO-214AC (SMA) package, which differs from the original DO-214AB (SMC) package. PCB footprint compatibility must be verified before implementation, as the SMA package may require circuit board redesign or adapter considerations.

Selection between these substitutes depends on package compatibility requirements and supply chain availability. The SS32H is recommended for applications requiring direct footprint compatibility. The SS32 (MDD) is suitable for designs where package transition is feasible and supply constraints necessitate alternative sourcing.

Frequently Asked Questions (FAQ)

Q: Can the SS32 (MDD) substitute for the SS32 R6 without PCB modification?

A: The SS32 (MDD) meets all electrical specifications but uses a DO-214AC (SMA) package instead of the original DO-214AB (SMC) package. PCB footprint compatibility must be confirmed. If the circuit board is designed specifically for SMC footprints, the SMA package will not mount directly without redesign.

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

A: Both are surface mount Schottky diode packages, but they have different physical dimensions and lead configurations. DO-214AB (SMC) and DO-214AC (SMA) are not interchangeable without circuit board modification.

Q: Is the SS32H suitable for automotive applications?

A: Yes. The SS32H carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. The original SS32 R6 does not specify automotive qualification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both the SS32 (MDD) and SS32H are ROHS3 compliant, matching the compliance status of the original SS32 R6.

Q: What is the moisture sensitivity level for these diodes?

A: All three components (SS32 R6, SS32, and SS32H) have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Do the substitute parts have identical forward voltage characteristics?

A: The SS32H specifies 500 mV @ 3 A forward voltage, matching the SS32 R6. The SS32 (MDD) does not provide forward voltage specifications in the available data.

Q: Which substitute has the best current availability?

A: The SS32 (MDD) has 19,566 pieces in stock, compared to 728 pieces for the SS32H. Availability should be confirmed with suppliers at the time of procurement.

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