VSSA310SHM3_A/I Schottky Diode Equivalent & Substitute Parts

Part Overview

The VSSA310SHM3_A/I is an automotive-grade Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 100 V DC reverse voltage with 3 A average rectified current capacity. The device is part of the TMBS® series and maintains Active product status with AEC-Q101 automotive qualification. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to packaging availability, inventory constraints, or supply chain considerations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	800 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	150	µA @ 100 V
Capacitance @ Vr, F	175	pF @ 4V, 1MHz
Package / Case	DO-214AC (SMA)	—
Operating Temperature - Junction	-40 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
Technology	Schottky	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the VSSA310SHM3_A/I is determined by strict equivalence across all electrical and mechanical parameters. The substitute part VSSA310SHM3_A/H maintains identical specifications in the following critical areas:

Electrical Parameters (Must Match Exactly):

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 800 mV @ 3 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 150 µA @ 100 V
Capacitance @ Vr, F: 175 pF @ 4V, 1MHz

Mechanical & Compliance Parameters (Must Match Exactly):

Package / Case: DO-214AC (SMA)
Mounting Type: Surface Mount
Technology: Schottky
Series: TMBS®
Grade: Automotive
Qualification: AEC-Q101
Operating Temperature - Junction: -40°C to 150°C
RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

The primary difference between the main part and substitute is the packaging format: Tape & Reel (TR) versus Cut Tape (CT) & Digi-Reel®. This distinction affects supply chain logistics and inventory management but does not alter component functionality or electrical performance.

Parameter Comparison

Parameter	VSSA310SHM3_A/I (Main)	VSSA310SHM3_A/H (Substitute)	Match
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	✓
Current - Average Rectified (Io)	3 A	3 A	✓
Voltage - Forward (Vf) (Max) @ If	800 mV @ 3 A	800 mV @ 3 A	✓
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	✓
Current - Reverse Leakage @ Vr	150 µA @ 100 V	150 µA @ 100 V	✓
Capacitance @ Vr, F	175 pF @ 4V, 1MHz	175 pF @ 4V, 1MHz	✓
Package / Case	DO-214AC (SMA)	DO-214AC (SMA)	✓
Mounting Type	Surface Mount	Surface Mount	✓
Operating Temperature - Junction	-40°C to 150°C	-40°C to 150°C	✓
Grade	Automotive	Automotive	✓
Qualification	AEC-Q101	AEC-Q101	✓
Technology	Schottky	Schottky	✓
Series	TMBS®	TMBS®	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Different

Engineering Selection Recommendations

Both the VSSA310SHM3_A/I and VSSA310SHM3_A/H are Active products manufactured by Vishay General Semiconductor - Diodes Division with identical electrical and mechanical specifications. Selection between these parts is based on packaging and supply requirements rather than functional performance.

VSSA310SHM3_A/I (Tape & Reel): Suitable for high-volume automated assembly operations requiring continuous reel feeding. Inventory availability is 1004 pieces.

VSSA310SHM3_A/H (Cut Tape & Digi-Reel®): Suitable for mixed-volume production, prototyping, and applications requiring flexible packaging formats. Inventory availability is 163,300 pieces.

Both parts maintain AEC-Q101 automotive qualification, ROHS3 compliance, and REACH unaffected status. The choice between these substitutes does not affect circuit performance, thermal characteristics, or reliability in automotive applications.

Frequently Asked Questions (FAQ)

Q: Can VSSA310SHM3_A/H be used as a direct replacement for VSSA310SHM3_A/I in production?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tape & Reel versus Cut Tape & Digi-Reel®). Direct substitution is valid for all circuit applications.

Q: Are there any differences in electrical performance between these two part numbers?

A: No. Both parts share identical electrical specifications including voltage rating (100 V), current capacity (3 A), forward voltage (800 mV @ 3 A), reverse leakage (150 µA @ 100 V), and capacitance (175 pF @ 4V, 1MHz).

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both VSSA310SHM3_A/I and VSSA310SHM3_A/H carry AEC-Q101 automotive qualification and are rated for automotive-grade applications across the operating temperature range of -40°C to 150°C.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging provides continuous component reels for automated high-speed assembly lines. Cut Tape (CT) & Digi-Reel® packaging offers flexibility for lower-volume production, prototyping, and mixed-component assembly. Both formats use the same DO-214AC (SMA) component package.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both VSSA310SHM3_A/I and VSSA310SHM3_A/H are ROHS3 compliant and REACH unaffected.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Since both parts are electrically and mechanically identical with the same DO-214AC (SMA) surface mount package, they are fully interchangeable in circuit design and PCB layout.

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