PA1877NL PULSE ELECTRONICS CORPORATION, PA1877NL Datasheet - Page 6

• Manufacturer Part Number: PA1877NL
• Description: TRANSFORMER POE 13W BASIC SMD
• Manufacturer: PULSE ELECTRONICS CORPORATION
• Type: For DC/DC Convertersr

Specifications of PA1877NL

• Applications: Flyback Converters
• Voltage - Primary: 34 ~ 57V
• Voltage - Auxillary: 13V @ 15mA
• Voltage - Isolation: 1500Vrms
• Frequency: 250kHz
• Operating Temperature: -40°C ~ 130°C
• Mounting Type: Surface Mount
• Footprint: 1.15" x 0.86" (29.2mm x 21.8mm)
• Height Above Board: 0.45" (11.4mm)
• For Use With/related Products: -
• Inductance: -
• Other names: Q2871820B

HIGH FREQUENCY WIRE WOUND
TRANSFORMERS
EFD20 Platforms - SMT
Notes
1. The temperature of the component (ambient plus temperature rise) must
2. The above transformers and inductors have been tested and approved
3. For flyback topology applications, it is necessary to ensure that the trans-
4. In high volt-µsec applications, it is important to calculate the core loss of
For More Information:
Pulse Worldwide
Headquarters
12220 World Trade Dr.
San Diego, CA 92128
U.S.A.
www.pulseeng.com
TEL: [phone]
FAX: [phone]
This is a “Preliminary” product data sheet. Products mentioned on this data sheet are in development and in the process of being qualified. These products are not fully
released nor are they in production. Features, specifications and performance of products offered are subject to change without notice. Other brand and product names
mentioned herein may be products and/or registered trademarks of their respective owners. For current information on this product, please contact the Pulse office
nearest you and ask for the “Power Applications Engineer.” © Copyright, 2008. Pulse Engineering, Inc. All rights reserved.
www.pulseeng.com
be within the stated operating temperature range.
by Pulse's power IC partners and are sited in the appropriate datasheet
or evaluation board documentation at these companies. To determine
which IC and IC partners are matched with the above Pulse part num-
bers please consult the IC Cross Reference on the Pulse website.
former will not saturate in the application. The peak flux density (Bpk)
should remain below 2700Gauss. To calculate the peak flux density use
the following formula:
the transformer. Approximate transformer core loss can be calculated as:
where ΔB can be calculated as:
CoreLoss (W) = 1.32E-13 * (Freq_kHz)
For Flyback Topology: ΔB = K1_Factor * Δ(A)
For Forward Topology: ΔB = K1_Factor * Volt-µsec
Bpk (Gauss) = K1_Factor * Ipk(A)
Pulse European
Headquarters
Einsteinstrasse 1
D-71083 Herrenberg
Germany
TEL: [phone]
FAX: [phone]
1.63
* (ΔB_Gauss)
Pulse China
Headquarters
B402, Shenzhen Academy of
Aerospace Technology Bldg.
10th Kejinan Rd.
High-Tech Zone
Nanshan District
Shenzen, PR China 518057
TEL: [phone]
FAX: [phone]
2.63
Mechanical
6
5. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to
6. The "NL" suffix indicates an RoHS-compliant part number. Non-NL suf-
Pulse North China
Room 1503
XinYin Building
No. 888 YiShan Rd.
Shanghai 200233
China
TEL: [phone]
FAX: [phone]
the part number (i.e. PA0273NL becomes PA0273NLT). Pulse complies
with industry standard tape and reel specification EIA481. The tape and
reel for this product has a width (W=44mm), pitch (Po=32mm) and depth
(Ko=11.78mm).
fixed parts are not necessarily RoHS compliant, but are electrically and
mechanically equivalent to NL versions. If a part number does not have
the "NL" suffix, but an RoHS compliant version is required, please con-
tact Pulse for availability.
Pulse South Asia
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: [phone]
FAX: [phone]
PRELIMINARY P666.A (3/08)
Pulse North Asia
No. 26
Kao Ching Rd.
Yang Mei Chen
Taoyuan Hsien
Taiwan, R. O. C.
32667
TEL: [phone]
FAX: [phone]