BD48L33G-TL Equivalent & Substitute Parts

Part Overview

The BD48L33G-TL is a voltage supervisor IC from Rohm Semiconductor's BD48Lxx series, designed for single-channel voltage monitoring applications. This component functions as a voltage detector with open drain or open collector output, providing active low reset functionality. The BD48L33G-TL is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. Equivalent and substitute parts maintain the core electrical and mechanical specifications required for direct replacement in existing applications.

Key Parameters

Parameter	Specification
Manufacturer	Rohm Semiconductor
Category	Power Management (PMIC)
Type	Voltage Detector
Number of Voltages Monitored	1
Voltage Threshold	3.3V
Output Type	Open Drain or Open Collector
Reset Function	Active Low
Operating Temperature Range	-40°C ~ 105°C (TA)
Mounting Type	Surface Mount
Package Type	TO-236-3, SC-59, SOT-23-3
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the BD48L33G-TL are identified based on strict electrical and mechanical parameter alignment. The substitution criteria are:

Primary Substitution Parameters:

Voltage threshold: 3.3V (exact match required)
Output configuration: Open Drain or Open Collector (exact match required)
Reset polarity: Active Low (exact match required)
Number of channels monitored: 1 (exact match required)
Operating temperature range: -40°C ~ 105°C (exact match required)
RoHS and REACH compliance status (exact match required)

Secondary Considerations:

Package type compatibility (TO-236-3/SC-59/SOT-23-3 for BD48L33G-TL; SC-74A/SOT-753 for BD48E33G-TR)
Moisture Sensitivity Level (MSL) differences noted but do not prevent substitution
Product status (active vs. obsolete) indicates availability

Two substitute parts meet these criteria: BD48K33G-TL (parametric equivalent) and BD48E33G-TR (manufacturer recommended).

Parameter Comparison

Parameter	BD48L33G-TL (Main)	BD48K33G-TL (Parametric Equivalent)	BD48E33G-TR (MFR Recommended)
Manufacturer	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor
Series	BD48Lxx	BD48Kxx	BD48Exx
Product Status	Obsolete	Active	Active
Type	Voltage Detector	Voltage Detector	Voltage Detector
Voltage Threshold	3.3V	3.3V	3.3V
Output Type	Open Drain or Open Collector	Open Drain or Open Collector	Open Drain or Open Collector
Reset Function	Active Low	Active Low	Active Low
Number of Channels	1	1	1
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	SC-74A, SOT-753
Supplier Device Package	3-SSOP	3-SSOP	5-SSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
MSL Rating	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)

Engineering Selection Recommendations

BD48K33G-TL (Parametric Equivalent): This part is the primary equivalent for the obsolete BD48L33G-TL. It maintains identical electrical specifications, operating temperature range, and package configuration (3-SSOP). The BD48K33G-TL is currently in active production status with substantial inventory availability (25,485 pcs), ensuring supply chain continuity. Both parts share identical RoHS3 and REACH compliance certifications. The MSL rating remains unchanged at Level 3. This substitute provides direct form-fit-function replacement with no circuit redesign required.

BD48E33G-TR (Manufacturer Recommended): This part is the manufacturer's recommended substitute, representing the current generation of the BD48 supervisor family. It maintains all critical electrical parameters: 3.3V threshold, open drain/collector output, active low reset, and identical operating temperature range. The BD48E33G-TR is in active production with higher inventory levels (2,195 pcs) and offers improved moisture sensitivity (MSL Level 1 vs. Level 3). The primary design consideration is the package change from 3-SSOP to 5-SSOP (SC-74A/SOT-753), which requires PCB layout modification. This substitute is suitable for new designs or redesign scenarios where package footprint adjustment is feasible.

Frequently Asked Questions (FAQ)

Q: Can BD48K33G-TL directly replace BD48L33G-TL without PCB modification? A: Yes. The BD48K33G-TL uses the identical 3-SSOP package (TO-236-3, SC-59, SOT-23-3) as the BD48L33G-TL, enabling direct PCB footprint compatibility and no circuit redesign.

Q: What is the key difference between BD48K33G-TL and BD48E33G-TR? A: The primary difference is package type. BD48K33G-TL uses 3-SSOP packaging, while BD48E33G-TR uses 5-SSOP packaging (SC-74A, SOT-753). Both maintain identical electrical specifications and operating parameters. PCB layout modification is required for BD48E33G-TR implementation.

Q: Are all three parts RoHS and REACH compliant? A: Yes. BD48L33G-TL, BD48K33G-TL, and BD48E33G-TR are all ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Does the MSL rating difference affect substitution suitability? A: MSL rating indicates moisture sensitivity during storage and handling. BD48K33G-TL maintains the same MSL Level 3 as the original part. BD48E33G-TR offers improved MSL Level 1 rating, which may provide advantages in high-humidity storage environments but does not prevent substitution.

Q: Which substitute should be selected for new production designs? A: BD48E33G-TR is the manufacturer-recommended choice for new designs, representing the current active product line. BD48K33G-TL is the preferred option for existing designs requiring direct replacement without PCB modification.

Q: Are there inventory or lead time considerations between the two substitutes? A: BD48K33G-TL has higher inventory availability (25,485 pcs) compared to BD48E33G-TR (2,195 pcs). Both parts are in active production status with established supply chains.

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