1N4948-AP Equivalent & Substitute Parts

Part Overview

The 1N4948-AP is a general-purpose rectifier diode rated for 1000 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute parts must maintain electrical performance across voltage, current, and thermal specifications while accommodating packaging and sourcing variations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 1 A	V
Reverse Recovery Time (trr)	500	ns
Current - Reverse Leakage @ Vr	5	µA @ 1000 V
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Through Hole	-
Package / Case	DO-204AL, DO-41, Axial	-
Technology	Standard	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the 1N4948-AP are grouped based on strict electrical and mechanical parameter alignment. All substitute candidates maintain the following critical specifications:

Electrical Parameters (Non-Negotiable):

Voltage - DC Reverse (Vr) (Max): 1000 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A
Reverse Recovery Time (trr): 500 ns
Current - Reverse Leakage @ Vr: 5 µA @ 1000 V
Operating Temperature - Junction: -55°C to 150°C

Mechanical Parameters (Compatible):

Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, Axial
Technology: Standard
RoHS Status: ROHS3 Compliant

Substitutes are classified as direct manufacturer equivalents, parametric equivalents, or similar parts based on manufacturer identity and product status. All listed substitutes are active products with current availability, addressing the obsolete status of the main part.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Tj [°C]	Package	Product Status
1N4948-AP	Micro Commercial Co	1000	1	1.3 @ 1 A	500	5 @ 1000 V	-55 to 150	DO-41	Obsolete
1N4948GP-AP	Micro Commercial Co	1000	1	1.3 @ 1 A	500	5 @ 1000 V	-55 to 150	DO-41	Active
FR107GP-AP	Micro Commercial Co	1000	1	1.3 @ 1 A	500	5 @ 1000 V	-55 to 150	DO-41	Active
FR107G	Taiwan Semiconductor Corporation	1000	1	1.3 @ 1 A	500	5 @ 1000 V	-55 to 150	DO-204AL (DO-41)	Active
BA159-E3/73	Vishay General Semiconductor - Diodes Division	1000	1	1.3 @ 1 A	500	5 @ 1000 V	-65 to 125	DO-204AL (DO-41)	Active
FR107A-G	Comchip Technology	1000	1	1.3 @ 1 A	500	5 @ 1000 V	-55 to 150	DO-41	Active
PG1010R_AY_00001	Panjit International Inc.	1000	1	1.3 @ 1 A	500	1 @ 1000 V	-55 to 150	DO-41	Active

Engineering Selection Recommendations

Direct Manufacturer Equivalent (Preferred for Obsolete Part Replacement):

The 1N4948GP-AP is the direct active equivalent from the original manufacturer, Micro Commercial Co. This part maintains identical electrical specifications and operating temperature range. Selection of this part eliminates design re-qualification requirements and maintains supply chain consistency with the original design intent.

Parametric Equivalents (Alternative Sources):

FR107GP-AP, FR107G, FR107A-G, and PG1010R_AY_00001 are parametric equivalents meeting all critical electrical specifications. These parts are manufactured by alternative suppliers and are currently in active production with higher inventory availability. All parametric equivalents are ROHS3 compliant and carry REACH Unaffected status where documented.

Similar Part (Extended Operating Range Consideration):

BA159-E3/73 from Vishay General Semiconductor meets all electrical specifications but operates within a narrower junction temperature range (-65°C to 125°C versus -55°C to 150°C). This part is suitable for applications where the full temperature range of the original part is not required. BA159-E3/73 maintains the highest inventory availability at 10,359 pieces.

Reverse Leakage Consideration:

PG1010R_AY_00001 exhibits lower reverse leakage current (1 µA @ 1000 V) compared to the main part specification (5 µA @ 1000 V). This characteristic is acceptable for direct substitution as lower leakage represents improved performance in this parameter.

All substitute parts are ROHS3 compliant and suitable for applications requiring environmental compliance certification.

Frequently Asked Questions (FAQ)

Q: Can 1N4948GP-AP be used as a direct replacement for 1N4948-AP?

A: Yes. The 1N4948GP-AP is the active equivalent from the original manufacturer with identical electrical specifications, operating temperature range, and package configuration. This is the recommended substitution path for obsolete part replacement.

Q: What is the difference between FR107GP-AP and FR107G?

A: Both parts are parametric equivalents with identical electrical specifications. The primary difference is packaging format: FR107GP-AP is supplied in Tape & Box (TB) format, while FR107G is supplied in Cut Tape (CT) format. FR107G has higher inventory availability (2400 pieces versus 866 pieces). Selection depends on assembly process requirements.

Q: Is BA159-E3/73 suitable for all applications using 1N4948-AP?

A: BA159-E3/73 is suitable for applications where the operating junction temperature range of -65°C to 125°C is adequate. The original part specification extends to 150°C. Verify application temperature requirements before substitution. All other electrical parameters are equivalent.

Q: Why does PG1010R_AY_00001 show lower reverse leakage current?

A: PG1010R_AY_00001 exhibits 1 µA reverse leakage at 1000 V compared to the 5 µA specification of the main part. Lower reverse leakage is an acceptable variation and represents improved performance. This part is suitable for direct substitution.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. Parts with documented REACH status are marked as REACH Unaffected.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in the following packaging formats: Tape & Box (TB) for FR107GP-AP and FR107A-G; Cut Tape (CT) for FR107G, BA159-E3/73, and PG1010R_AY_00001. All parts use through-hole mounting in DO-41 or DO-204AL (equivalent) packages. Verify packaging compatibility with assembly equipment before final selection.

Q: Which substitute has the highest current inventory?

A: BA159-E3/73 has the highest inventory availability at 10,359 pieces. PG1010R_AY_00001 is the second highest at 5,825 pieces. FR107G has 2,400 pieces available.

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