1A7-AP Equivalent & Substitute Parts

Part Overview

The 1A7-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 1000 V DC reverse voltage and 1 A average rectified current in an R-1 axial through-hole package. This component is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement. The 1A7-AP remains functional for applications requiring standard recovery rectification at 1 kV and 1 A specifications, but active alternatives are available to ensure long-term component availability and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	5	µA @ 1000 V
Capacitance @ Vr, F	15	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	R-1, Axial	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the 1A7-AP is determined by electrical and mechanical parameter equivalence. The primary criteria for valid substitution are:

Electrical Parameters (Must Match or Exceed):

Voltage - DC Reverse (Vr) (Max): 1000 V minimum
Current - Average Rectified (Io): 1 A minimum
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A maximum
Speed: Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 5 µA @ 1000 V maximum
Capacitance @ Vr, F: 15 pF @ 4V, 1MHz maximum

Mechanical Parameters (Must Be Compatible):

Mounting Type: Through Hole
Package / Case: Axial configuration
Operating Temperature - Junction: -55°C to 150°C minimum range

Compliance Parameters:

RoHS Status: ROHS3 Compliant

The 1N4007-E3/54 meets all electrical and mechanical substitution criteria and maintains full compliance with RoHS3 requirements. The primary distinction is package designation (DO-204AL versus R-1) and product status (Active versus Obsolete).

Parameter Comparison

Parameter	1A7-AP	1N4007-E3/54	Match Status
Voltage - DC Reverse (Vr) (Max)	1000 V	1000 V	Equivalent
Current - Average Rectified (Io)	1 A	1 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A	Equivalent
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Equivalent
Current - Reverse Leakage @ Vr	5 µA @ 1000 V	5 µA @ 1000 V	Equivalent
Capacitance @ Vr, F	15 pF @ 4V, 1MHz	15 pF @ 4V, 1MHz	Equivalent
Mounting Type	Through Hole	Through Hole	Compatible
Package / Case	R-1, Axial	DO-204AL (DO-41), Axial	Compatible
Operating Temperature - Junction	-55°C ~ 150°C	-50°C ~ 150°C	Compatible
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Substitute Advantage

Engineering Selection Recommendations

The 1N4007-E3/54 is a direct electrical equivalent to the 1A7-AP with identical performance specifications across all critical rectification parameters. Selection of the 1N4007-E3/54 is supported by the following factors:

Product Status: The 1N4007-E3/54 maintains Active product status, ensuring long-term availability and supply chain reliability. The 1A7-AP is classified as Obsolete, creating procurement risk for new designs and ongoing production.

Compliance Certification: Both components maintain ROHS3 Compliance, ensuring regulatory alignment for applications subject to RoHS requirements.

Electrical Equivalence: All electrical parameters—reverse voltage, forward voltage, average rectified current, recovery speed, reverse leakage current, and junction capacitance—are identical between the two components.

Mechanical Compatibility: Both components are through-hole mounted axial diodes. The package designation difference (R-1 versus DO-204AL/DO-41) does not affect electrical performance or PCB footprint compatibility for standard through-hole applications.

Temperature Range: The 1N4007-E3/54 operating temperature range (-50°C to 150°C) encompasses the critical upper and lower operational limits required by the 1A7-AP specification.

Frequently Asked Questions (FAQ)

Q: Can the 1N4007-E3/54 be used as a direct replacement for the 1A7-AP in existing designs?

A: Yes. The 1N4007-E3/54 meets all electrical specifications of the 1A7-AP. Both components are through-hole axial diodes with identical voltage, current, and thermal characteristics. PCB footprints for R-1 and DO-204AL (DO-41) packages are compatible for standard through-hole applications.

Q: What is the difference between the R-1 and DO-204AL package designations?

A: R-1 and DO-204AL (DO-41) are equivalent axial through-hole package standards. Both use identical lead spacing and mounting methodology. The designation difference reflects manufacturer nomenclature conventions rather than physical or electrical differences.

Q: Why is the 1A7-AP classified as Obsolete?

A: Obsolete status indicates the component is no longer manufactured or supported by the original supplier. The 1N4007-E3/54 provides an active alternative with identical electrical performance.

Q: Are there any temperature range limitations when substituting the 1N4007-E3/54?

A: The 1N4007-E3/54 operating temperature range (-50°C to 150°C) is compatible with the 1A7-AP specification (-55°C to 150°C). Applications requiring operation below -50°C should be evaluated against the 1N4007-E3/54 datasheet.

Q: Do both components have the same RoHS compliance status?

A: Yes. Both the 1A7-AP and 1N4007-E3/54 are ROHS3 Compliant, ensuring regulatory alignment for applications subject to RoHS requirements.

Q: What inventory considerations apply to these components?

A: The 1A7-AP has 830 pieces in stock (Obsolete status). The 1N4007-E3/54 has 137,700 pieces in stock (Active status), providing significantly greater availability for new procurement and production requirements.

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