DF1502M Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DF1502M is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 200 V peak reverse voltage and 1.5 A average rectified current in a 4-EDIP (0.300", 7.62mm) through-hole package. The component is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production support.

Key Parameters

Parameter	DF1502M Value
Voltage - Peak Reverse (Max)	200 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1.5 A
Current - Reverse Leakage @ Vr	10 µA @ 100 V
Operating Temperature Range	-65°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-EDIP (0.300", 7.62mm)
Diode Type	Single Phase
Technology	Standard
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the DF1502M is determined by the following criteria:

Voltage Rating Compatibility: The substitute must support a peak reverse voltage of 200 V or higher to maintain circuit protection margins.

Current Rating Compatibility: The substitute must support an average rectified current of 1.5 A or higher to handle the design load without thermal stress.

Package Compatibility: Through-hole mounting is required. Physical dimensions must accommodate the 4-EDIP form factor (0.300" or 0.321" spacing variants are mechanically compatible with standard PCB layouts).

Electrical Characteristics: Forward voltage drop (Vf) and reverse leakage current must remain within acceptable ranges for the application circuit.

Temperature Range: Operating temperature capability must meet or exceed -65°C to 150°C to ensure reliability across the intended operating environment.

Compliance Status: RoHS3 compliance is mandatory for new designs and ongoing production.

Parameter Comparison

Part Number	Manufacturer	Voltage (V)	Current (A)	Vf @ If (V)	Package	Temp Range (°C)	Status	RoHS
DF1502M	Diodes Incorporated	200	1.5	1.1 @ 1.5	4-EDIP (0.300")	-65 ~ 150	Obsolete	ROHS3
DB103-BP	Micro Commercial Co	200	1.0	1.1 @ 1.0	4-EDIP (0.321")	-55 ~ 150	Not For New Designs	ROHS3
DF202-G	Comchip Technology	200	2.0	1.1 @ 2.0	4-EDIP (0.321")	-55 ~ 150	Active	ROHS3
DF06M	onsemi	600	1.5	1.1 @ 1.0	4-EDIP (0.300")	-55 ~ 150	Obsolete	ROHS3
DB106-BP	Micro Commercial Co	800	1.0	1.1 @ 1.0	4-EDIP (0.321")	-55 ~ 150	Active	ROHS3
DB105-BP	Micro Commercial Co	600	1.0	1.1 @ 1.0	4-EDIP (0.321")	-55 ~ 150	Active	ROHS3
DF005M	Fairchild Semiconductor	50	1.0	1.1 @ 1.0	4-EDIP (0.300")	-65 ~ 150	Active	Not Listed

Engineering Selection Recommendations

Primary Substitute: DF202-G

The DF202-G from Comchip Technology is the most direct functional replacement. It matches the 200 V voltage rating and exceeds the 1.5 A current requirement with a 2.0 A rating. The part is in active production status, ensuring long-term availability. RoHS3 compliance is confirmed. The 4-EDIP (0.321") package is mechanically compatible with standard through-hole PCB layouts designed for the DF1502M. Operating temperature range (-55°C to 150°C) covers most industrial applications, though the lower minimum temperature (-55°C vs. -65°C) should be evaluated for extreme cold-weather environments.

Secondary Substitute: DB103-BP

The DB103-BP from Micro Commercial Co provides exact voltage matching at 200 V. However, the 1.0 A current rating falls below the DF1502M specification of 1.5 A. This part is suitable only for applications where the actual circuit load does not exceed 1.0 A. Product status is "Not For New Designs," limiting its use to legacy system maintenance. RoHS3 compliance is confirmed.

Higher Voltage Alternatives: DB105-BP, DB106-BP

These parts provide voltage ratings above the 200 V requirement (600 V and 800 V respectively), offering enhanced circuit protection margins. Both are in active production. DB105-BP and DB106-BP are suitable for applications where overvoltage protection is a design priority, though the higher voltage rating may introduce slightly different reverse leakage characteristics. Current ratings are 1.0 A, which is below the DF1502M specification.

Package Consideration: DF005M and DF06M

These alternatives maintain the 4-EDIP (0.300") package footprint matching the original DF1502M. DF005M is rated for only 50 V and is unsuitable for 200 V applications. DF06M provides 600 V rating with 1.5 A current capacity and matches the original package dimensions, but is classified as obsolete.

Frequently Asked Questions (FAQ)

Q: Can DB103-BP replace DF1502M in all applications?

A: DB103-BP matches the 200 V voltage rating but is limited to 1.0 A average rectified current, compared to the DF1502M's 1.5 A rating. Substitution is valid only if the actual circuit load does not exceed 1.0 A. Additionally, DB103-BP is marked "Not For New Designs," making it unsuitable for new product development.

Q: What is the difference between the 4-EDIP (0.300") and 4-EDIP (0.321") packages?

A: Both are 4-pin DIP packages with different lead spacing. The 0.300" variant (DF1502M, DF005M, DF06M) and 0.321" variant (DB103-BP, DB105-BP, DB106-BP, DF202-G) are mechanically compatible with standard through-hole PCB layouts. Lead spacing differences are minor and do not prevent interchangeability on typical circuit boards.

Q: Why does DF202-G have a 2.0 A rating when the DF1502M is rated for 1.5 A?

A: DF202-G is rated for higher current capacity, making it a suitable upgrade substitute. The higher rating provides additional thermal margin and allows the component to handle transient current spikes without degradation. This does not create compatibility issues; the circuit will operate within the component's safe operating area.

Q: Is DF005M suitable as a substitute?

A: No. DF005M is rated for only 50 V peak reverse voltage, which is insufficient for a 200 V application. Using this part would result in component failure and circuit damage.

Q: Can I use DB106-BP or DB105-BP instead of DF1502M?

A: Yes, both parts are suitable substitutes from an electrical standpoint. DB105-BP (600 V, 1.0 A) and DB106-BP (800 V, 1.0 A) provide voltage ratings above the 200 V requirement, offering enhanced overvoltage protection. However, both are limited to 1.0 A current, which is below the DF1502M's 1.5 A rating. Substitution is valid if circuit load does not exceed 1.0 A. Both parts are in active production with confirmed RoHS3 compliance.

Q: What is the impact of the -55°C minimum operating temperature in substitute parts versus the DF1502M's -65°C?

A: The DF1502M supports operation down to -65°C, while most substitute parts (DB103-BP, DB105-BP, DB106-BP, DF202-G) are rated to -55°C. For applications requiring operation below -55°C, DF005M maintains the -65°C minimum, though it is unsuitable for 200 V circuits. Evaluate the actual operating environment to determine if the -55°C limit is acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended substitutes (DB103-BP, DB105-BP, DB106-BP, DF202-G, DF06M) are confirmed RoHS3 compliant. DF005M compliance status is not listed in the provided data and should be verified with the manufacturer before use in RoHS-regulated applications.

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