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CDLL5919E3
Electronics Part Number
CDLL5919E3-WXManufacturer
Microchip Technology
CDLL5919E3
Description
Voltage regulator chipInventory
181 Pcs New Original In Stock
Surface-mount zener, DO-213AB (MELF LL41), 5.6V, 1.25W. Robust and efficient; for voltage reference, power management.
Quantity
Minimum 1
Minimum 1
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Freight
Basic cost: USD 70.00
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Shipping method
Shipped from Hong Kong via FedEx/DHL/UPS/TNT
Delivery Time
In-stock items: Ready to ship in 1-2 days
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Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear Regulator Controllers
Manufacturer
Microchip Technology
Packaging
-
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
14-DIP (0.300", 7.62mm)
Series
-
Base Product Number
MIC5157
Product Status
Obsolete
Type
Positive Fixed
Current - Supply
4.5mA
Number of Outputs
1
Voltage - Input
3V ~ 36V
Supplier Device Package
14-DIP
Data Sheet Document (D)
Datasheets
Download MIC5157BN Product Specification (PDF)
HTML Datasheet
MIC5157BN-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Standard Package
25
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Frequently Asked Questions (FAQ)
Can I still safely design-in the MIC5157BN for a new industrial power supply project despite its obs
Designing in the MIC5157BN for new projects carries significant supply chain and long-term support risks due to its obsolete status. While it remains functional and may be available from distributors with stock (e.g., 4198 pcs in inventory), future production is not guaranteed, risking end-of-life (EOL) disruptions. To mitigate, qualify a drop-in replacement such as the MIC5157YN (same pinout and function) early, secure lifetime buys if volume justifies it, and document a second-source strategy. Avoid sole-sourcing this part in mission-critical or long-lifecycle applications like medical or industrial control systems.
What are the real-world thermal and efficiency trade-offs when using the MIC5157BN in a high-input-v
In a 24V-to-5V application at 100mA, the MIC5157BN will dissipate approximately 1.9W ((24V – 5V) × 0.1A), requiring careful thermal management despite its through-hole 14-DIP package. The linear regulation architecture inherently limits efficiency to ~21%, generating substantial heat that may necessitate a heatsink or airflow in enclosed environments. Consider switching regulators (e.g., MCP16301) for better efficiency if board space allows; otherwise, ensure adequate copper pour and ambient temperature stays below 85°C to avoid thermal shutdown or reduced MTBF.
Is the MIC5157BN electrically compatible with the MIC5157YN, and can I use them interchangeably in a
Yes, the MIC5157BN and MIC5157YN are functionally and pin-for-pin compatible, both housed in a 14-DIP package with identical electrical characteristics and operating ranges. You can substitute one for the other without PCB layout modifications. However, verify the YN variant’s availability and pricing, as it may also be nearing obsolescence. Always cross-check the latest datasheets for subtle differences in startup behavior or noise performance, especially in sensitive analog supply rails.
How does the MIC5157BN’s non-RoHS compliance impact its use in EU-based consumer electronics, and wh
The MIC5157BN’s non-RoHS status prohibits its use in most new EU consumer electronics under Directive 2011/65/EU unless a valid exemption applies (e.g., for specific industrial or medical equipment). If your application falls under Annex III exemptions (e.g., monitoring and control instruments), you may still use it, but full technical documentation and conformity assessments are required. For future-proofing, transition to RoHS-compliant alternatives like the MCP1700 series or modern LDO controllers to avoid regulatory roadblocks and simplify recycling compliance.
What failure modes should I anticipate when operating the MIC5157BN near its maximum input voltage (
Operating the MIC5157BN at or near 36V on a 24V automotive rail exposes it to transient overvoltage risks from load dumps, which can exceed 40V and damage the controller. Although the part tolerates up to 36V continuous, ISO 7637-2 pulses can breach this limit. To protect the MIC5157BN, implement a TVS diode (e.g., SMAJ33A) at the input and a series current-limiting resistor or fuse. Additionally, monitor long-term reliability—prolonged operation near voltage limits accelerates oxide stress and may reduce lifespan, especially at elevated temperatures.
Can I still safely design-in the MIC5157BN for a new industrial power supply project despite its obs
Designing in the MIC5157BN for new projects carries significant supply chain and long-term support risks due to its obsolete status. While it remains functional and may be available from distributors with stock (e.g., 4198 pcs in inventory), future production is not guaranteed, risking end-of-life (EOL) disruptions. To mitigate, qualify a drop-in replacement such as the MIC5157YN (same pinout and function) early, secure lifetime buys if volume justifies it, and document a second-source strategy. Avoid sole-sourcing this part in mission-critical or long-lifecycle applications like medical or industrial control systems.
What are the real-world thermal and efficiency trade-offs when using the MIC5157BN in a high-input-v
In a 24V-to-5V application at 100mA, the MIC5157BN will dissipate approximately 1.9W ((24V – 5V) × 0.1A), requiring careful thermal management despite its through-hole 14-DIP package. The linear regulation architecture inherently limits efficiency to ~21%, generating substantial heat that may necessitate a heatsink or airflow in enclosed environments. Consider switching regulators (e.g., MCP16301) for better efficiency if board space allows; otherwise, ensure adequate copper pour and ambient temperature stays below 85°C to avoid thermal shutdown or reduced MTBF.
Is the MIC5157BN electrically compatible with the MIC5157YN, and can I use them interchangeably in a
Yes, the MIC5157BN and MIC5157YN are functionally and pin-for-pin compatible, both housed in a 14-DIP package with identical electrical characteristics and operating ranges. You can substitute one for the other without PCB layout modifications. However, verify the YN variant’s availability and pricing, as it may also be nearing obsolescence. Always cross-check the latest datasheets for subtle differences in startup behavior or noise performance, especially in sensitive analog supply rails.
How does the MIC5157BN’s non-RoHS compliance impact its use in EU-based consumer electronics, and wh
The MIC5157BN’s non-RoHS status prohibits its use in most new EU consumer electronics under Directive 2011/65/EU unless a valid exemption applies (e.g., for specific industrial or medical equipment). If your application falls under Annex III exemptions (e.g., monitoring and control instruments), you may still use it, but full technical documentation and conformity assessments are required. For future-proofing, transition to RoHS-compliant alternatives like the MCP1700 series or modern LDO controllers to avoid regulatory roadblocks and simplify recycling compliance.
What failure modes should I anticipate when operating the MIC5157BN near its maximum input voltage (
Operating the MIC5157BN at or near 36V on a 24V automotive rail exposes it to transient overvoltage risks from load dumps, which can exceed 40V and damage the controller. Although the part tolerates up to 36V continuous, ISO 7637-2 pulses can breach this limit. To protect the MIC5157BN, implement a TVS diode (e.g., SMAJ33A) at the input and a series current-limiting resistor or fuse. Additionally, monitor long-term reliability—prolonged operation near voltage limits accelerates oxide stress and may reduce lifespan, especially at elevated temperatures.
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Sep 15 2026
