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Specifications
Mfr. Part #:
B78307A2385A003
Package:
SMD-8P,13.2x9.3mm
Key Attributes
Model Number:
B78307A2385A003
Product Description
SMD Transformers - E10 EM Series
The E10 EM series SMD transformers from TDK Electronics are designed for high-performance applications, offering excellent electrical insulation and a wide operating temperature range. These transformers are qualified to AEC-Q200 and are RoHS compatible, making them suitable for demanding industrial and automotive environments.
Product Attributes
- Brand: TDK Electronics
- Series: E10 EM series
- Ordering Code: B78307A*A003
- Construction: Ferrite core (MnZn), SMD gullwing pins, triple insulated wire, non-conductive pick-and-place cap
- Insulation System: UL1446 class 155 (F)
- Certifications: AEC-Q200 qualified, RoHS compatible
- Plastic Materials: UL94-V0
- Insulated Wire: UL60950-1, Annex U
Technical Specifications
| Feature | Specification |
|---|---|
| Height | 11.35 mm max |
| Operating Temperature Range | -40 C to +150 C (component) |
| Weight | Approx. 2 g |
| Typical Operational Frequency | 100 - 500 kHz |
| 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 to +40 C, humidity 75% RH |
| Resistance to Reflow Soldering Heat | In accordance with JEDEC J-STD-020D (Tpeak = +245 C) |
| Delivery Mode | Blister tape, 380 mm diameter |
| Packing Unit | 280 pcs per reel |
Applications
- Isolated DC/DC converters (bridge and flyback topology)
- Gate driver circuits (e.g., for 650 V IGBTs)
- Digital isolator ICs
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) | Ordering Code |
|---|---|---|---|---|---|---|---|---|---|
| B1, B2 | 1 : 1.08 | 100 | 0.35 | - | 15 / 30 | 350 | 410 | 9 | B78307A2276A003 |
| B1, B2 | 1 : 0.76 | 100 | 0.45 | - | 18 / 36 | 360 | 300 | 9 | B78307A9741A003 |
| B1, B2 | 1 : 3.67 | 10 | 0.1 | - | 10 / 20 | 200 | 700 | 6 | 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 |
Note: For detailed explanations of footnotes and configuration details, please refer to the original datasheet.
2411272151_TDK-B78307A2385A003_C17483703.pdf
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