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PH300A280-24
TDK-Lambda Americas Inc
DC DC CONVERTER 24V 300W
9841 Pcs New Original In Stock
Isolated Module DC DC Converter 1 Output 24V 12.5A 200V - 425V Input
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5.0 / 5.0
- (403 Ratings)
PH300A280-24
Product Overview
13050187
DiGi Electronics Part Number
PH300A280-24-DGManufacturer
TDK-Lambda Americas Inc
PH300A280-24
Description
DC DC CONVERTER 24V 300WInventory
9841 Pcs New Original In Stock
Isolated Module DC DC Converter 1 Output 24V 12.5A 200V - 425V 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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PH300A280-24 Technical Specifications
Category
DC DC Converters
Packaging
Tube
Series
PH-A280 (300W)
Product Status
Active
Type
Isolated Module
Number of Outputs
1
Voltage - Input (Min)
200V
Voltage - Input (Max)
425V
Voltage - Output 1
24V
Voltage - Output 2
-
Voltage - Output 3
-
Voltage - Output 4
-
Current - Output (Max)
12.5A
Power (Watts)
300 W
Voltage - Isolation
3 kV
Applications
ITE (Commercial)
Features
Remote On/Off, OCP, OVP
Operating Temperature
-40°C ~ 100°C
Efficiency
90.5%
Mounting Type
Through Hole
Package / Case
Half Brick
Size / Dimension
2.40" L x 2.28" W x 0.50" H (61.0mm x 57.9mm x 12.7mm)
Base Product Number
PH300A280
Datasheet & Documents
HTML Datasheet
PH300A280-24-DG
Environmental & Export Classification
RoHS Status
RoHS Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8504.40.9580
Additional Information
Other Names
285-2660
PH300A280-24
PH300A28024
285-PH300A280-24
285-2660-ND
Standard Package
1
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Their consistent focus on packaging safety shows a customer-centric approach.
de desembre 02, 2025
I find the website layout very intuitive, making shopping effortless.
de desembre 02, 2025
The overall shopping experience at DiGi Electronics is fantastic, thanks to great products and efficient delivery.
de desembre 02, 2025
Their post-sale service sets a high standard in the industry, making us feel valued as customers.
de desembre 02, 2025
Great value for money combined with an easy-to-use website—highly recommended.
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Frequently Asked Questions (FAQ)
Can the PH300A280-24 operate reliably in a high-temperature industrial environment with ambient temperatures reaching 85°C, and what thermal derating considerations should be factored into the design?
Yes, the PH300A280-24 is rated for operation up to 100°C, making it suitable for demanding industrial environments. However, to ensure long-term reliability at elevated ambient temperatures, proper thermal management is critical. The converter begins derating at 60°C, reducing output power linearly to 50% (150W) at 100°C. For sustained 300W operation, ensure at least 200 LFM airflow or implement a heatsink strategy. Avoid enclosing the PH300A280-24 in a sealed chassis without forced cooling, as localized heating could trigger thermal shutdown or degrade electrolytic components prematurely. Use thermal vias and copper planes to assist heat dissipation in through-hole mounting applications.
How does the PH300A280-24 compare to the equivalent XP Power JCA300D24 in terms of input voltage range and suitability for legacy 270VDC systems in aerospace ground support equipment?
The PH300A280-24 offers a wider 200–425VDC input range compared to the XP Power JCA300D24’s 180–360VDC range, giving it better compatibility with high-line transients in 270VDC aerospace systems. This makes the PH300A280-24 more robust in applications where input voltage surges above 360V occur—such as during load dump events. Additionally, the PH300A280-24’s higher isolation voltage (3 kV vs. 2.5 kV) improves safety margin in high-reliability setups. While both converters deliver 24V/12.5A, the TDK-Lambda part's broader input tolerance reduces risk of dropout in unstable or aging power distribution systems, making it a safer drop-in replacement in upgraded or retrofitted systems.
What are the key risks when replacing a legacy 300W half-brick DC-DC converter with the PH300A280-24, and how can I ensure mechanical and electrical compatibility?
Critical risks include mismatched pinouts, inadequate creepage, and missing control signal compatibility. The PH300A280-24 uses a standard half-brick footprint (2.40" x 2.28"), but verify pin assignments—especially for remote on/off and sense lines—against the legacy part to avoid miswiring. Use a breakout adapter if uncertain. Confirm that your PCB layout maintains minimum 8 mm creepage for 400VDC inputs to meet insulation requirements enabled by the 3 kV isolation. Also, ensure the remote on/off is pulled appropriately (active-high or active-low via external resistor) as misconfiguration may prevent startup. Double-check input filter requirements, as the PH300A280-280-24 may interact differently with existing EMI filters.
Does the PH300A280-24 require external input filtering or snubbers when used with long DC bus runs in industrial motor drives?
Yes, long DC bus runs can introduce significant voltage transients and ringing due to parasitic inductance, which risk triggering the PH300A280-24’s over-voltage protection or damaging internal components. While the converter includes input OVP, adding an external LC filter or a transient-voltage-suppression (TVS) diode rated at 450V is recommended for bus runs over 1 meter. A 10 µF–22 µF bulk capacitor with low ESR near the input pins helps stabilize voltage during load steps. Avoid daisy-chaining multiple converters without individual input filtering, as current surges may couple noise. Always measure input waveforms under worst-case load transitions to validate stability.
Can the PH300A280-24 safely power sensitive analog sensors and precision ADCs, or is additional post-regulation required?
The PH300A280-24 provides isolated 24V at 90.5% efficiency, but its typical output ripple is around 150 mVp-p, which is too high for precision analog circuits like strain-gauge amplifiers or 16-bit+ ADCs. To power sensitive loads, always add external LC or RC filtering—e.g., a 10 µH shielded inductor followed by a 220 µF low-ESR polymer capacitor—to reduce ripple below 20 mVp-p. For ultra-sensitive applications, consider a low-noise LDO (e.g., TPS7A47) post-regulating down to 5V or 3.3V. Use star grounding and keep high-current return paths separate from analog grounds to maintain signal integrity when sharing the PH300A280-24 output.
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.
PH300A280-24 CAD Models
TDK-Lambda Americas Inc PH300A280-24 PCB symbols & footprints
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