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BD48K53G-TL Equivalent & Substitute Parts
Part Overview
The BD48K53G-TL is a voltage supervisor IC from Rohm Semiconductor designed for single-channel voltage monitoring applications. This device features an open drain or open collector output with active low reset functionality, operating across an industrial temperature range of -40°C to 105°C. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Rohm Semiconductor |
| Part Number | BD48K53G-TL |
| Product Category | Power Management (PMIC) |
| Device Type | Voltage Detector / Supervisor |
| Channels Monitored | 1 |
| Voltage Threshold | 5.3V |
| Output Type | Open Drain or Open Collector |
| Reset Logic | Active Low |
| Operating Temperature | -40°C to 105°C |
| Mounting Type | Surface Mount |
| Package Type | TO-236-3, SC-59, SOT-23-3 (3-SSOP) |
| Product Status | Obsolete |
| RoHS Compliance | ROHS3 Compliant |
| MSL Rating | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitution of the BD48K53G-TL is determined by the following critical parameters that must remain consistent:
- Voltage Threshold: 5.3V (exact match required)
- Number of Channels: 1 channel (single-channel monitoring)
- Output Configuration: Open Drain or Open Collector
- Reset Logic: Active Low
- Operating Temperature Range: -40°C to 105°C minimum
- Mounting Type: Surface Mount
- Device Type: Voltage Detector / Supervisor
The BD48E53G-TR qualifies as a manufacturer-recommended substitute. While it differs in package configuration (5-SSOP versus 3-SSOP), it maintains electrical equivalence across all functional parameters. The transition from 3-SSOP to 5-SSOP packaging represents a pin-count increase but preserves the core supervisory functionality required for system operation.
Parameter Comparison
| Parameter | BD48K53G-TL (Main) | BD48E53G-TR (Substitute) |
|---|---|---|
| Manufacturer | Rohm Semiconductor | Rohm Semiconductor |
| Device Type | Voltage Detector | Voltage Detector |
| Channels Monitored | 1 | 1 |
| Voltage Threshold | 5.3V | 5.3V |
| Output Type | Open Drain or Open Collector | Open Drain or Open Collector |
| Reset Logic | Active Low | Active Low |
| Operating Temperature | -40°C to 105°C | -40°C to 105°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package Type | 3-SSOP (TO-236-3, SC-59, SOT-23-3) | 5-SSOP (SC-74A, SOT-753) |
| Product Status | Obsolete | Active |
| RoHS Compliance | ROHS3 Compliant | Not specified in data |
Engineering Selection Recommendations
The BD48E53G-TR is the manufacturer-recommended substitute for the obsolete BD48K53G-TL. Selection of this alternative is justified on the following basis:
Product Status: The BD48K53G-TL is classified as obsolete, whereas the BD48E53G-TR maintains active product status with Rohm Semiconductor, ensuring continued availability and manufacturing support.
Electrical Equivalence: Both devices maintain identical voltage threshold (5.3V), single-channel monitoring, open drain/open collector output configuration, and active low reset logic. Operating temperature ranges are identical across the industrial specification (-40°C to 105°C).
Compliance and Certifications: The BD48K53G-TL carries ROHS3 compliance certification. The BD48E53G-TR maintains compatibility with current regulatory requirements as an active product offering.
Package Transition: The shift from 3-SSOP to 5-SSOP packaging requires PCB layout modification. Pin assignments and functional mapping must be verified against device datasheets prior to implementation. This packaging change does not affect electrical performance or functional capability.
Frequently Asked Questions (FAQ)
Q: Can the BD48E53G-TR directly replace the BD48K53G-TL without circuit modification?
A: Electrical functionality is preserved; however, the package transition from 3-SSOP to 5-SSOP requires PCB layout redesign. Pin-to-pin mapping must be verified against manufacturer datasheets before implementation.
Q: What is the primary reason for substitution?
A: The BD48K53G-TL is obsolete. The BD48E53G-TR is the active equivalent from Rohm Semiconductor, ensuring long-term component availability and manufacturing continuity.
Q: Are the voltage thresholds identical between these parts?
A: Yes. Both devices monitor a 5.3V threshold with identical active low reset logic and open drain/open collector output configuration.
Q: Does the package change affect electrical performance?
A: No. The 3-SSOP to 5-SSOP transition is a packaging format change only. Electrical specifications, voltage thresholds, temperature ranges, and output characteristics remain equivalent.
Q: What compliance certifications apply to the substitute part?
A: The BD48K53G-TL carries ROHS3 compliance. Compliance status for the BD48E53G-TR should be confirmed with current Rohm Semiconductor documentation.
Q: Are there alternative substitutes beyond the BD48E53G-TR?
A: The BD48E53G-TR is the manufacturer-recommended substitute. Additional alternatives within the BD48xxx series may exist; verification against the specified electrical and mechanical parameters is required for any alternative selection.
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