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CDH53-390KC Equivalent & Substitute Parts
Part Overview
The CDH53-390KC is a 39 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 640 mA continuous current with a maximum DC resistance of 550 mOhm. The part operates across a temperature range of -30°C to 100°C and is specified at 1 kHz inductance frequency test conditions.
The CDH53-390KC is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and design continuity where this inductor specification is required.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 39 µH |
| Inductance Tolerance | ±10% |
| Current Rating | 640 mA |
| DC Resistance (DCR) | 550 mOhm Max |
| Core Type | Ferrite Drum Core |
| Shielding | Unshielded |
| Mounting Type | Surface Mount |
| Physical Dimensions | 6.00 mm L × 5.20 mm W × 3.20 mm H |
| Operating Temperature Range | -30°C to 100°C |
| Inductance Test Frequency | 1 kHz |
Substitute Part Grouping Explanation
Substitution of the CDH53-390KC is determined by strict equivalence across the following electrical and mechanical parameters:
- Inductance Value: 39 µH ±10%
- Current Rating: 640 mA minimum
- DC Resistance: 550 mOhm maximum
- Core Material & Type: Ferrite drum core, unshielded
- Mounting Configuration: Surface mount, nonstandard package
- Physical Footprint: 6.00 mm × 5.20 mm × 3.20 mm maximum height
- Operating Temperature: Minimum -30°C to 100°C range
The CDH53NP-390KC meets all electrical and mechanical equivalence criteria and is therefore classified as a direct substitute for the obsolete CDH53-390KC.
Parameter Comparison
| Parameter | CDH53-390KC (Main Part) | CDH53NP-390KC (Substitute) | Match Status |
|---|---|---|---|
| Inductance | 39 µH | 39 µH | Equivalent |
| Inductance Tolerance | ±10% | ±10% | Equivalent |
| Current Rating (Amps) | 640 mA | 640 mA | Equivalent |
| DC Resistance (DCR) | 550 mOhm Max | 550 mOhm Max | Equivalent |
| Core Type | Ferrite Drum Core | Ferrite Drum Core | Equivalent |
| Shielding | Unshielded | Unshielded | Equivalent |
| Mounting Type | Surface Mount | Surface Mount | Equivalent |
| Physical Dimensions | 6.00 mm × 5.20 mm × 3.20 mm | 6.00 mm × 5.20 mm × 3.20 mm | Equivalent |
| Operating Temperature Range | -30°C to 100°C | -40°C to 100°C | Substitute Exceeds Specification |
| Inductance Test Frequency | 1 kHz | 1 kHz | Equivalent |
| Product Status | Obsolete | Active | Substitute Available |
Engineering Selection Recommendations
The CDH53NP-390KC is the direct equivalent substitute for the obsolete CDH53-390KC. Both parts are manufactured by Sumida America Components Inc. within the CDH53 series and share identical electrical specifications and physical dimensions.
Key Selection Factors:
The CDH53NP-390KC offers an extended operating temperature range of -40°C to 100°C compared to the -30°C to 100°C range of the main part, providing additional thermal margin in low-temperature applications.
The CDH53NP-390KC is classified as ROHS3 compliant, whereas the CDH53-390KC is RoHS non-compliant. This distinction is relevant for applications subject to RoHS regulatory requirements.
The CDH53NP-390KC is supplied in Tape & Reel (TR) packaging format, which is standard for automated assembly operations. The main part does not specify packaging format.
The CDH53NP-390KC maintains active product status with confirmed inventory availability (1068 pieces), ensuring supply chain continuity and long-term sourcing reliability.
Frequently Asked Questions (FAQ)
Q: Can the CDH53NP-390KC be used as a direct replacement for the CDH53-390KC in existing designs?
A: Yes. The CDH53NP-390KC is electrically and mechanically equivalent to the CDH53-390KC across all specified parameters: 39 µH inductance, 640 mA current rating, 550 mOhm maximum DC resistance, ferrite drum core construction, unshielded configuration, and identical physical dimensions (6.00 mm × 5.20 mm × 3.20 mm). No circuit redesign is required.
Q: What is the difference in operating temperature range between these parts?
A: The CDH53-390KC operates from -30°C to 100°C. The CDH53NP-390KC operates from -40°C to 100°C. The substitute part provides an additional 10°C of low-temperature capability, which may be beneficial in cold environment applications but is not required for direct substitution.
Q: Are there any compliance differences between the two parts?
A: The CDH53NP-390KC is ROHS3 compliant, while the CDH53-390KC is RoHS non-compliant. Both parts are REACH unaffected and classified under ECCN EAR99. If RoHS compliance is a design requirement, the CDH53NP-390KC is the appropriate selection.
Q: What packaging format is the substitute part supplied in?
A: The CDH53NP-390KC is supplied in Tape & Reel (TR) packaging, which is standard for surface mount component automated assembly. The main part does not specify a packaging format in the provided data.
Q: Is the CDH53NP-390KC currently available?
A: Yes. The CDH53NP-390KC is classified as active product status with 1068 pieces confirmed in new original stock inventory.
Q: Are there any electrical performance differences between the parts?
A: No. Both parts are specified with identical inductance (39 µH ±10%), current rating (640 mA), DC resistance (550 mOhm maximum), and inductance test frequency (1 kHz). Electrical performance is equivalent.
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