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PH100F24-28
TDK-Lambda Americas Inc
DC DC CONVERTER 28V 100W
7113 Pcs New Original In Stock
Isolated Module DC DC Converter 1 Output 28V 3.6A 18V - 36V Input
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5.0 / 5.0
- (191 Ratings)
PH100F24-28
Product Overview
13050821
DiGi Electronics Part Number
PH100F24-28-DGManufacturer
TDK-Lambda Americas Inc
PH100F24-28
Description
DC DC CONVERTER 28V 100WInventory
7113 Pcs New Original In Stock
Isolated Module DC DC Converter 1 Output 28V 3.6A 18V - 36V Input
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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365 - Day Quality Guarantee - Every part fully backed.
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PH100F24-28 Technical Specifications
Category
DC DC Converters
Packaging
-
Series
PH-F (100W)
Product Status
Obsolete
Type
Isolated Module
Number of Outputs
1
Voltage - Input (Min)
18V
Voltage - Input (Max)
36V
Voltage - Output 1
28V
Voltage - Output 2
-
Voltage - Output 3
-
Current - Output (Max)
3.6A
Power (Watts)
100 W
Voltage - Isolation
3 kV
Applications
ITE (Commercial)
Features
Remote On/Off, OCP, OTP, OVP
Operating Temperature
-20°C ~ 85°C
Efficiency
-
Mounting Type
Through Hole
Package / Case
Module
Size / Dimension
3.39" L x 3.27" W x 0.50" H (86.0mm x 83.0mm x 12.7mm)
Control Features
Enable, Active Low
Datasheet & Documents
HTML Datasheet
PH100F24-28-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8504.40.9580
Additional Information
Other Names
PH100F2428
Standard Package
1
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
We rely heavily on DiGi Electronics' support services, and they never disappoint with their quick response.
de desembre 02, 2025
DiGi Electronics’s inventory management minimizes delays and keeps my supply chain smooth.
de desembre 02, 2025
Fast delivery and eco-friendly packaging show their dedication to customer satisfaction and sustainability.
de desembre 02, 2025
Received my order swiftly, and the prices were so reasonable. Excellent shopping experience.
de desembre 02, 2025
Their reliable products consistently meet my high standards, making DIY more enjoyable.
de desembre 02, 2025
I am pleased with how quickly they respond to post-sale inquiries, ensuring continuous support.
de desembre 02, 2025
Customer service responded swiftly to my inquiries, providing detailed support and guidance.
de desembre 02, 2025
I commend their use of eco-friendly materials in packaging and swift logistics.
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Frequently Asked Questions (FAQ)
What are the key reliability risks when designing in the PH100F24-28 DC-DC converter for industrial applications near its maximum operating temperature of 85°C?
The PH100F24-28 is rated for operation up to 85°C, but sustained operation near this limit significantly increases thermal stress on internal components, potentially reducing long-term reliability. At elevated temperatures, output voltage regulation may drift beyond typical tolerances, and efficiency typically drops by 3–5%, increasing self-heating. To mitigate risk, ensure adequate airflow (>100 LFM) or implement a heatsink if ambient temperature exceeds 60°C. Also, derate output power by 20% above 70°C to extend MTBF, especially in sealed enclosures common in industrial ITE systems.
Can the PH100F24-28 safely replace a Vicor MI-J61-IY in a 28V/3.5A telecom power system, and what design changes are required?
While both deliver 28V at ~3.5A, direct replacement of the Vicor MI-J61-IY with the PH100F24-28 is not recommended without validation. The PH100F24-28 has a narrower input range (18–36V vs. Vicor’s 18–75V), making it unsuitable for 48V telecom systems with wide brownout or surge conditions. Additionally, the PH100F24-28 uses through-hole mounting and lacks the same dynamic load response. If input voltage stays within 18–36V, verify enable logic compatibility (active-low on PH100F24-28) and ensure output ripple meets system noise budgets—TDK-Lambda modules typically have higher ripple than Vicor’s Zero Voltage Switching topology.
How should I handle remote on/off control with the PH100F24-28 in a system where the enable signal originates from a 3.3V microcontroller?
The PH100F24-28 features an active-low enable input with a typical threshold of 1.2V (max 1.5V), so a 3.3V GPIO can directly drive it without level shifting. However, ensure the microcontroller pin can sink at least 1mA, as the enable pin sources ~0.5–1mA when pulled low. Use a 10kΩ pull-up to Vin to guarantee startup if the MCU is in reset. Avoid floating the enable pin—this can cause erratic behavior. For noise immunity in electrically harsh environments, add a 100nF capacitor from the enable pin to ground and route the trace away from switching nodes.
Is the PH100F24-28 suitable for battery-powered applications with input voltages that may dip below 18V during discharge, and what alternatives exist?
No—the PH100F24-28 cannot operate below 18V input, making it incompatible with battery systems (e.g., 24V lead-acid dropping to 16V under load). Attempting to operate below spec risks latch-up, reduced efficiency, or failure to regulate. For such applications, consider wide-input alternatives like the RECOM RxxPxx24 series (e.g., R24P2428) or TDK-Lambda’s own iQE series, which support 9–36V or 16–75V inputs. If redesign isn’t feasible, add a pre-regulating boost converter to maintain ≥18V into the PH100F24-28, though this increases complexity and reduces overall system efficiency by ~8–10%.
Given that the PH100F24-28 is marked obsolete, what are the risks of last-time buy and long-term support, and which active TDK-Lambda parts are viable drop-in replacements?
As an obsolete part, the PH100F24-28 carries significant supply chain risk—no new stock will be produced, and remaining inventory may lack full traceability or undergo counterfeit exposure. For new designs, avoid last-time buys unless absolutely necessary for legacy sustainment. TDK-Lambda recommends migrating to the iFE100 series (e.g., iFE100-24S28), which offers similar 100W/28V output, 18–36V input, 3kV isolation, and through-hole compatibility in a slightly larger footprint. The iFE100 also improves efficiency by ~5%, includes digital monitoring, and is actively supported with full documentation and longevity guarantees—critical for commercial ITE products requiring 10+ year lifecycles.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
PH100F24-28 CAD Models
TDK-Lambda Americas Inc PH100F24-28 PCB symbols & footprints
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