SE30AFD-M3/6B Equivalent & Substitute Parts

Part Overview

The SE30AFD-M3/6B is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V DC reverse voltage and 1.4 A average rectified current in a surface mount DO-221AC (SlimSMA) package. This diode operates within the eSMP® series and maintains Active product status. Alternative equivalent parts become necessary when addressing supply chain constraints, inventory availability, or application-specific requirements such as automotive qualification while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1.4	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 3	V @ A
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	10 @ 200	µA @ V
Capacitance @ Vr, F	19 @ 4V, 1MHz	pF
Operating Temperature - Junction	-55 to 175	°C
Package / Case	DO-221AC, SMA Flat Leads
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SE30AFD-M3/6B is determined by strict equivalence across the following critical parameters:

Voltage Rating: 200 V DC reverse voltage (Vr)
Current Rating: 1.4 A average rectified current (Io)
Forward Voltage: 1.1 V maximum at 3 A forward current
Recovery Characteristics: 1.5 µs reverse recovery time
Reverse Leakage: 10 µA at 200 V
Package: DO-221AC (SlimSMA) with SMA flat leads
Mounting: Surface mount configuration
Temperature Range: -55°C to 175°C junction operating temperature
Compliance: ROHS3 compliant, MSL 1 (Unlimited)

All substitute parts listed maintain identical electrical performance and mechanical compatibility with the main part number. Differences in part designation reflect manufacturing date codes, tape reel configurations, or automotive-grade qualification levels without affecting functional interchangeability.

Parameter Comparison

Parameter	SE30AFD-M3/6B	SE30AFD-M3/6A	SE30AFDHM3/6A
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Series	eSMP®	eSMP®	eSMP®
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	1.4 A	1.4 A	1.4 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A	1.1 V @ 3 A	1.1 V @ 3 A
Reverse Recovery Time (trr)	1.5 µs	1.5 µs	1.5 µs
Current - Reverse Leakage @ Vr	10 µA @ 200 V	10 µA @ 200 V	10 µA @ 200 V
Capacitance @ Vr, F	19 pF @ 4V, 1MHz	19 pF @ 4V, 1MHz	19 pF @ 4V, 1MHz
Package / Case	DO-221AC, SMA Flat Leads	DO-221AC, SMA Flat Leads	DO-221AC, SMA Flat Leads
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 175°C
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Automotive Grade	Standard	Standard	Automotive (AEC-Q101)

Engineering Selection Recommendations

All three part numbers—SE30AFD-M3/6B, SE30AFD-M3/6A, and SE30AFDHM3/6A—are electrically and mechanically interchangeable for applications requiring 200 V, 1.4 A general-purpose rectification in a surface mount DO-221AC package.

SE30AFD-M3/6B and SE30AFD-M3/6A are functionally identical standard-grade diodes suitable for general industrial and consumer applications. Selection between these two is determined by inventory availability and tape reel configuration requirements.

SE30AFDHM3/6A provides the same electrical performance with automotive-grade qualification (AEC-Q101). This variant is required for applications subject to automotive industry standards and reliability requirements. The automotive qualification does not alter electrical or mechanical specifications but certifies the component for automotive supply chain use.

All parts maintain Active product status, ROHS3 compliance, and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard surface mount assembly processes and environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can SE30AFD-M3/6A be used as a direct replacement for SE30AFD-M3/6B?

A: Yes. Both parts are electrically and mechanically identical, with identical voltage ratings (200 V), current ratings (1.4 A), forward voltage characteristics (1.1 V @ 3 A), and package specifications (DO-221AC, SMA flat leads). Substitution is direct without circuit modification.

Q: What is the difference between SE30AFD-M3/6A and SE30AFDHM3/6A?

A: The SE30AFDHM3/6A carries automotive-grade qualification (AEC-Q101) while maintaining identical electrical specifications. The "HM" designation indicates automotive qualification. Both parts are electrically equivalent; selection depends on application requirements for automotive compliance.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the DO-221AC (SlimSMA) package with SMA flat leads and surface mount configuration. PCB footprints, solder pad layouts, and assembly processes are identical across all three part numbers.

Q: Can SE30AFDHM3/6A be used in non-automotive applications?

A: Yes. The automotive-grade qualification is a superset of standard requirements. SE30AFDHM3/6A meets all specifications of the standard-grade parts and can be used in any application where SE30AFD-M3/6B or SE30AFD-M3/6A is specified.

Q: What does the part number suffix indicate?

A: The suffix reflects manufacturing date codes and tape reel configurations. "M3/6B" and "M3/6A" indicate different manufacturing batches or reel specifications. The "HM" in SE30AFDHM3/6A indicates automotive-grade qualification. These designations do not affect electrical performance or interchangeability.

Q: Are all parts ROHS3 compliant?

A: Yes. All three part numbers are ROHS3 compliant with MSL 1 (Unlimited), meeting environmental and regulatory requirements for standard surface mount assembly and storage.

Q: What is the reverse recovery time specification, and why is it important?

A: The reverse recovery time (trr) is 1.5 µs for all three parts. This parameter defines the time required for the diode to transition from forward conduction to reverse blocking. Identical specifications ensure consistent switching behavior across all substitute parts.

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