Compact SMD Transformer TDK B78307A2338A003 E10 EM Series with Ferrite Core and Triple Insulated Wire
SMD Transformers E10 EM Series
Product Overview
The TDK Electronics E10 EM series SMD transformers are designed for high-frequency applications, offering robust performance and reliability. Featuring a ferrite core and triple insulated wire, these transformers are built to meet stringent industry standards, including IEC and UL certifications. They are qualified to AEC-Q200, ensuring suitability for demanding environments. The compact design with SMD gullwing pins facilitates easy integration into automated assembly processes. Ideal for isolated DC/DC converters, gate driver circuits, and digital isolator ICs, the E10 EM series provides efficient and safe power conversion solutions.
Product Attributes
- Brand: TDK Electronics
- Series: E10 EM series
- Type: B78307A*A003
- Construction Material: Ferrite core (MnZn)
- Insulation System: UL1446 class 155(F)
- Certifications: AEC-Q200 qualified, RoHS compatible
- Delivery Mode: Blister tape (380 mm diameter)
- Packing Unit: 280 pcs per reel
Technical Specifications
| Specification | Value |
|---|---|
| Height | 11.35 mm max |
| Operating Temperature Range | -40 C +150 C (component) |
| Weight | Approx. 2 g |
| Typical Operational Frequency | 100 ... 500 kHz (typ.) |
| High Voltage Test (AC N1 / N2) | 3000 V AC (50 Hz, 1 s) |
| High Voltage Type Test (AC, N1 / N2) | 3750 V AC (50 Hz, 60 s) |
| Partial Discharge Inception Voltage (N1/N2) | >900 V peak (type test) |
| Partial Discharge Extinction Voltage (N1/N2) | >700 V peak (type test) |
| Creepage Distance N1 / N2 | >6 mm; cumulative, core floating |
| Clearance Distance N1 / N2 | >5.5 mm; cumulative, core floating |
| Creepage Distance [N1,N2] / core | >3 mm |
| Clearance Distance [N1,N2] / core | >2.75 mm |
| Clearance, Creepage Core / Top Surface | >2 mm |
| Pollution Degree | P2 (to IEC 60664) |
| Insulation Thermal Class | +155 C (F) (to IEC 60085) |
| Climatic Category | 40/150/56 (to IEC 60068) |
| Storage Conditions | -25 C +40 C, humidity 75% RH |
| Resistance to Reflow Soldering Heat | In accordance with JEDEC J-STD-020D (Tpeak= +245 C) |
| Working Voltage N1 / N2 (Reinforced Insulation) | 300 V |
| Working Voltage N1 / N2 (Basic Insulation) | 500 V |
Characteristics and Ordering Codes
| Topology | Turns Ratio N1/N2 | LN1 (H) | Lleak,typ, N1 (H) | Isat,N1 (A) | E*dtN1 (max, unipolar/ bipolar) (Vs) | RDC,N1 (m) | RDC,N2 (m) | Cp N1/N2 (pF) | Fig. | Ordering Code |
|---|---|---|---|---|---|---|---|---|---|---|
| B1, B2 | 1 : 1.08 | 100 | 0.35 | - | 15 / 30 | 350 | 410 | 9 | F1 | B78307A2276A003 |
| B1, B2 | 1 : 0.76 | 100 | 0.45 | - | 18 / 36 | 360 | 300 | 9 | F1 | B78307A9741A003 |
| B1, B2 | 1 : 3.67 | 10 | 0.1 | - | 10 / 20 | 200 | 700 | 6 | F2 | B78307A2385A003 |
| B3,B4 | 1 : 4 | 2 10% | 0.06 | 4 | -105 | 340 | 4 | F3 | B78307A2338A003 | |
| B3,B4 | 4 : 1 | 25 10% | - | 1 | - | - | - | 4 | F4 | B78307A2338A003 |
Applications
- Isolated DC/DC converters (bridge and flyback topology)
- Gate driver circuits (e.g., for 650 V IGBTs)
- Digital isolator ICs
Get in Touch
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