DF04SP-HF Equivalent & Substitute Parts

Part Overview

The DF04SP-HF is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 400 V peak reverse voltage and 1 A average rectified current. This component is classified as obsolete, indicating discontinuation from the manufacturer. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production, repair, and field replacement applications.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	400 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing

Substitute Part Grouping Explanation

Substitution eligibility for the DF04SP-HF is determined by the following critical parameters:

Voltage - Peak Reverse (Max): 400 V (exact match required)
Current - Average Rectified (Io): 1 A (exact match required)
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A (exact match required)
Operating Temperature Range: -55°C ~ 150°C (TJ) (exact match required)
Mounting Type: Surface Mount (exact match required)
Package / Case: 4-SMD, Gull Wing (exact match required)
Diode Type: Single Phase (exact match required)
Technology: Standard (exact match required)

All substitute parts listed meet these electrical and mechanical specifications. Variations in current leakage characteristics, supplier device package designations, and product status are noted but do not preclude functional equivalence within the specified parameter set.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Mounting Type	Package / Case	Inventory (Pcs)
DF04SP-HF	Comchip Technology	Obsolete	400 V	1 A	1.1 V @ 1 A	10 µA @ 400 V	-55°C ~ 150°C	Surface Mount	4-SMD, Gull Wing	1150
DF04S-HF	Comchip Technology	Active	400 V	1 A	1.1 V @ 1 A	10 µA @ 400 V	-55°C ~ 150°C	Surface Mount	4-SMD, Gull Wing	729
DB104S-G	Comchip Technology	Obsolete	400 V	1 A	1.1 V @ 1 A	10 µA @ 400 V	-55°C ~ 150°C	Surface Mount	4-SMD, Gull Wing	1511
DB104S-HF	Comchip Technology	Active	400 V	1 A	1.1 V @ 1 A	10 µA @ 400 V	-55°C ~ 150°C	Surface Mount	4-SMD, Gull Wing	997
DF04S-G	Comchip Technology	Obsolete	400 V	1 A	1.1 V @ 1 A	10 µA @ 400 V	-55°C ~ 150°C	Surface Mount	4-SMD, Gull Wing	1425
DBLS104G C1G	Taiwan Semiconductor Corporation	Active	400 V	1 A	1.1 V @ 1 A	2 µA @ 400 V	-55°C ~ 150°C	Surface Mount	4-SMD, Gull Wing	1078
DBLS104GHC1G	Taiwan Semiconductor Corporation	Active	400 V	1 A	1.1 V @ 1 A	2 µA @ 400 V	-55°C ~ 150°C	Surface Mount	4-SMD, Gull Wing	1051
DF04S-E3/45	Vishay General Semiconductor - Diodes Division	Active	400 V	1 A	1.1 V @ 1 A	5 µA @ 400 V	-55°C ~ 150°C	Surface Mount	4-SMD, Gull Wing	5400
DF04SA-E3/45	Vishay General Semiconductor - Diodes Division	Active	400 V	1 A	1.1 V @ 1 A	5 µA @ 400 V	-55°C ~ 150°C	Surface Mount	4-SMD, Gull Wing	735

Engineering Selection Recommendations

Primary Recommendation: DF04S-HF

The DF04S-HF is the direct manufacturer equivalent from Comchip Technology with active product status. This part maintains identical electrical specifications and mechanical packaging to the obsolete DF04SP-HF. Selection of DF04S-HF eliminates obsolescence risk and ensures long-term component availability.

Secondary Recommendations (Active Status, Multi-Source Options):

DF04S-E3/45 (Vishay General Semiconductor - Diodes Division): Active product with highest inventory availability (5400 pcs). Meets all critical electrical and mechanical parameters. RoHS3 compliant.
DF04SA-E3/45 (Vishay General Semiconductor - Diodes Division): Active product with identical specifications to DF04S-E3/45. RoHS3 compliant.
DBLS104GHC1G (Taiwan Semiconductor Corporation): Active product with automotive-grade qualification (AEC-Q101). Meets all critical parameters with lower reverse leakage (2 µA @ 400 V). RoHS3 compliant.
DBLS104G C1G (Taiwan Semiconductor Corporation): Active product with identical specifications to DBLS104GHC1G. RoHS3 compliant.

Tertiary Options (Obsolete Status, Inventory Availability):

DB104S-G (Comchip Technology): Obsolete status but available inventory (1511 pcs). Meets all critical parameters.
DF04S-G (Comchip Technology): Obsolete status but available inventory (1425 pcs). Meets all critical parameters.
DB104S-HF (Comchip Technology): Active product with available inventory (997 pcs). Meets all critical parameters.

All listed parts are RoHS3 compliant and REACH unaffected where specified. Selection should prioritize active product status to ensure long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can DF04S-HF directly replace DF04SP-HF without circuit modification?

A: Yes. The DF04S-HF maintains identical electrical specifications (400 V peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage at 1 A) and mechanical packaging (4-SMD, Gull Wing surface mount). No circuit modification is required.

Q: What is the difference between Comchip Technology and Vishay General Semiconductor - Diodes Division parts?

A: Both manufacturers produce bridge rectifiers meeting the same electrical and mechanical specifications for this application. Vishay parts (DF04S-E3/45, DF04SA-E3/45) exhibit lower reverse leakage current (5 µA @ 400 V) compared to Comchip parts (10 µA @ 400 V). This difference does not affect functional equivalence within the specified parameter set.

Q: What is the significance of the Taiwan Semiconductor Corporation DBLS104 series?

A: The DBLS104G C1G and DBLS104GHC1G parts meet all critical electrical and mechanical specifications. The DBLS104GHC1G variant includes automotive-grade qualification (AEC-Q101) and is suitable for automotive applications. Both exhibit lower reverse leakage (2 µA @ 400 V) than the original part.

Q: Are there differences in packaging between substitute parts?

A: All substitute parts use identical 4-SMD, Gull Wing surface mount packaging. Supplier device package designations (DFS, DBS, DBLS) reflect internal manufacturer classifications but do not affect physical footprint or mounting compatibility.

Q: Why is DF04SP-HF classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active equivalent parts (DF04S-HF, DF04S-E3/45, DF04SA-E3/45, DBLS104G C1G, DBLS104GHC1G) are available from multiple manufacturers to ensure continued supply.

Q: What is the difference between current leakage specifications across substitute parts?

A: Current leakage varies: DF04SP-HF and Comchip parts specify 10 µA @ 400 V; Vishay parts specify 5 µA @ 400 V; Taiwan Semiconductor parts specify 2 µA @ 400 V. All values remain within acceptable limits for standard bridge rectifier applications and do not affect functional equivalence.

Q: Can automotive-grade parts (DBLS104GHC1G) be used in non-automotive applications?

A: Yes. Automotive-grade parts exceed standard specifications and are suitable for any application requiring the specified electrical and mechanical parameters. AEC-Q101 qualification indicates additional reliability testing and is not restrictive for non-automotive use.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts operate across the identical temperature range: -55°C to 150°C (junction temperature). This specification is maintained across all manufacturers and variants.

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