Product Overview
The Pulse Electronics EP7 Platform SMD Push Pull Transformer (PH9185.XXXNL series) is designed for high isolation power supply driver applications. It operates within a fixed duty cycle Push Pull topology, offering a cost-effective solution for delivering up to 3W from low voltage sources. This transformer is ideal for isolated RS-485/RS-232 power supply driver circuits and is compatible with the MAXIM MAX253 IC. It features reinforced insulation, 8mm creepage, and 5KVrms isolation, meeting UL and TUV certifications for safety and reliability in demanding applications. The design complies with Pulses class F insulation system.
Product Attributes
- Brand: Pulse Electronics
- Platform: EP7
- Type: SMD Push Pull Transformer
- Insulation: Reinforced insulation
- Certifications: UL and TUV certified
- Compliance: UL60950-1 2nd edition, CAN/CSA C22.2 NO. 60950-1-07 2nd edition, EN61558-1, EN61558-2-16
- RoHS: NL suffix indicates RoHS-compliant part number
Technical Specifications
| Part Number | Inductance (1-3) (H 45%) | DCR (1-3) ( MAX) | DCR (4-6) ( MAX) | MAX (1-3) (V-sec Max) | Turns Ratio (1:3) (6:4) | Isolated Voltage (Vrms) |
|---|---|---|---|---|---|---|
| PH9185.011NL | 750 | 0.50 | 0.55 | 66 | 1CT : 1CT | 5000 |
| PH9185.012NL | 450 | 0.40 | 0.80 | 52 | 1CT : 2CT | 5000 |
| PH9185.013NL | 200 | 0.35 | 0.95 | 36 | 1CT : 3CT | 5000 |
| PH9185.021NL | 1800 | 0.75 | 0.45 | 100 | 2CT : 1CT | 5000 |
| PH9185.034NL | 750 | 0.50 | 0.75 | 66 | 3CT : 4CT | 5000 |
| PH9185.038NL | 310 | 0.44 | 1.00 | 44 | 3CT : 8CT | 5000 |
| PH9185.043NL | 1260 | 0.70 | 0.56 | 89 | 4CT : 3CT | 5000 |
| PH9185.083NL | 2350 | 0.90 | 0.40 | 110 | 8CT : 3CT | 5000 |
| Specification | Value |
|---|---|
| Operating Temperature | -40C to +125C |
| Weight | 2.6 grams |
| Tape & Reel Packaging | 150/reel (add "T" suffix to part number for order) |
| Tray Packaging | 80/tray |
| Continuous Isolation Voltage | 600Vrms |
| Creepage Distance | 8mm |
| Isolation Voltage (Test) | 5KVrms |
Note on MAX (1-3): The maximum volt-usec rating limits the peak flux density to 3600 gauss when used in bi-polar drive application with 200KHz. For unipolar drive applications or a bi-polar drive with 350kHz, a maximum volt-usec could be 60% of the listed value. For Push-Pull topology, where the voltage is applied across half the primary winding turns, the maximum volts-usec needs to be derated by 50%.
Note on Isolated Voltage: AEC-Q200 temperature and humidity operational life testing completed using a dielectric strength test of 5000Vdc.
Note on PH9185.013NL: This part was not included in the original UL/TUV certification but is compliant.
Note on Cost Reduced Versions: Versions without UL/TUV certification are available; please contact Pulse Electronics.
2410121851_PULSE-PH9185-034NLT_C581401.pdf
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