Surface Mount Toroidal Transformer PH9085.011NLT Suitable for Industrial Isolated Power Applications

Pulse Electronics PH9085.XXXNL and PM2180.XXXNL Isolation Power Transformers

Product Overview

The Pulse Electronics PH9085.XXXNL and PM2180.XXXNL series are high isolation power supply transformer drivers designed for fixed duty cycle Push-Pull topologies. These SMD toroidal transformers offer a low-cost solution for delivering up to 2W from a low voltage source, suitable for applications like isolated RS-485/RS-232 power supply driver circuits. The design is compatible with the Maxim MAX253 IC. With a 2.5KVrms isolation rating (380Vrms continuous), these transformers are ideal for applications requiring robust electrical isolation.

Product Attributes

• Brand: Pulse Electronics
• Platform: Toroid Platform
• Mounting Type: SMD (Surface Mount Device)
• Certifications (PM2180.XXXNL only): AEC-Q200, IATF16949
• Packaging: Tape & Reel, Tray

Technical Specifications

Part Number	Inductance (1-3) (H 35%)	Leakage Inductance (1-3) with (4-6) shorted (H MAX)	Capacitance (1, 2, 3) to (4, 5, 6) (pF MAX)	DCR (1-3) ( MAX)	DCR (4-6) ( MAX)	ET MAX (1-3) (V-sec Max)	Turns Ratio (1:3) (6:4)	Isolated Voltage (Vrms)
PH9085.011NL / PM2180.011NL	1020	0.8	30	0.60	0.65	22	1CT : 1CT	2500
PH9085.012NL / PM2180.012NL	1020	0.6	40	0.85	1.60	22	1CT : 2CT	2500
PH9085.021NL / PM2180.021NL	1160	1.6	20	0.60	0.35	23.6	2CT : 1CT	2500
PH9085.034NL / PM2180.034NL	1020	0.6	40	0.60	0.75	22	3CT : 4CT	2500
PH9085.035NL / PM2180.035NL	1020	0.6	40	0.80	1.20	22	3CT : 5CT	2500
PH9085.038NL / PM2180.038NL	1020	0.7	40	0.85	2.00	22	3CT : 8CT	2500
PH9085.043NL / PM2180.043NL	1160	0.8	30	0.60	0.50	23.6	4CT : 3CT	2500
PH9085.083NL / PM2180.083NL	1160	2.0	15	0.60	0.30	23.6	8CT : 3CT	2500
PH9085.089NL / PM2180.089NL	1160	0.6	40	0.60	0.70	23.6	8CT : 9CT	2500

Specification	Value
Operating Temperature	-40C to +125C
Weight	0.365 grams
Reel Quantity	700/reel
Tray Quantity	55/tray
Continuous Isolation Voltage	380Vrms
Functional Insulation	Yes
Topology Compatibility	Push Pull Converter
Power Output (Typical)	Up to 2W
Dimensions Tolerance	0.25 mm

Notes:

• ET Max is calculated to limit core loss and temperature rise at 420KHz based on a bipolar flux swing of 210mT Peak.
• For Push-Pull topology, ET needs to be derated by 50% for the same flux swing.
• Applied ET may need further derating for higher frequencies based on temperature rise from core and copper losses.
• Continuous isolation voltage confirmed by 125C/1000hrs accelerated aging with bias voltage applied between primary and secondary windings.

Tape & Reel Information:

Part Number Suffix	Reel Size (mm)	Tape Size (mm)	Qty/Reel
T / T	330	16.4	700

2410010203_PULSE-PH9085-011NLT_C6147296.pdf

Surface Mount Toroidal Transformer PH9085.011NLT Suitable for Industrial Isolated Power Applications Images