SMD Transformer for Ultrasonic Sensors
EP 6 series
Series/Type:
Ordering code:
B78416
B78416A*A003
Date:
Version:
2020-03-12
1
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Identification/Classification 1
SMD Transformer for Ultrasonic Sensors
(header 1 + top left bar):
Identification/Classification 2
EP 6 series
(header 2 + bottom left header bar):
Ordering code: (top right header bar)
B78416A*A003
Series/Type: (bottom right header bar)
B78416
Preliminary data (optional):
Department:
MAG TF T PD
Date:
2020-03-12
Version:
1
TDK Electronics AG 2020. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without TDK Electronics' prior express consent is prohibited.
SMD Transformer for Ultrasonic Sensors
EP 6 series
B78416A*A003
B78416
Construction
Ferrite core
EP 6 SMD type
Shielding for optimized EMC-behavior
5 U-shape terminals
Applications
Ultrasonic Sensor
Ultrasonic Park Assist
Industrial distance measuring
Robotics
Features
Qualification: AEC-Q200
Resistance to reflow soldering heat in accordance to
JEDEC J-STD-020D with Tpeak 245 °C
MSL level 1
RoHS compatible
Marking
Product brand, middle block of ordering code, date code,
pin1 marker, production place identification code
Delivery mode and packing unit
Blister tape
Packing unit: 1000 pcs. per reel
MAG TF T PD
Please read Cautions and warnings and
Important notes at the end of this document.
2020-03-12
Page 2 of 7
SMD Transformer for Ultrasonic Sensors
EP 6 series
B78416A*A003
B78416
Dimensional drawing
Schematics
Recommended PCB layout (Top View)
Recommendation: Connect Pin 6 on PCB to GND
Blister Tape
Reel: Ø 380 mm, W1: 24.4 mm, W2: 30.4 mm
Dimensions in [mm] / all dimensions without tolerances are typical values
MAG TF T PD
Please read Cautions and warnings and
Important notes at the end of this document.
2020-03-12
Page 3 of 7
SMD Transformer for Ultrasonic Sensors
EP 6 series
B78416A*A003
B78416
Technical data and measuring conditions
Specified @ +25 °C if not mentioned otherwise / all values without tolerances are typical values
Inductance L
(4 - 6)
Turns ratio
N1a : N1b : N2
RDC
N1a / N1b
RDC
N2
Operating
frequency
Ordering code
3 mH ±10%1
1 : 1 : 8.42
0.59 Ω / 0.59 Ω
23.0 Ω
52 kHz
B78416A2232A003
3 mH ±10%1, 2
1 : 1 : 8.42
0.59 Ω / 0.59 Ω
23.0 Ω
52 kHz
B78416A2360A003
0.23 mH ±8%3
1:1:9
0.23 Ω / 0.23 Ω
8.7 Ω
300 kHz
B78416A2386A003
4.2 mH ±8%3
1 : 1 : 15
0.55 Ω / 0.55 Ω
33 Ω
50 kHz
B78416A2430A003
5 mH ±10%3
1 : 1 : 10.1
0.74 Ω / 0.74 Ω
29.2 Ω
50 kHz
B78416A2433A003
High Voltage test (N1a, N1b) / N2 (f = 50 Hz, t = 1 s)
200 VRMS
Weight
appr. 1 g
Operating temperature range (component)
–40 °C … +125 °C
Inductance test conditions: V = 1 V, f = 52 kHz
Version with short cut between shielding and Pin 6
3 Inductance test conditions: V = 100 mV, f = 50 kHz
1
2
MAG TF T PD
Please read Cautions and warnings and
Important notes at the end of this document.
2020-03-12
Page 4 of 7
SMD Transformer for Ultrasonic Sensors
EP 6 series
B78416A*A003
B78416
Cautions and warnings
Please note the recommendations in our Inductors data book (latest edition or in the Internet) and
in the data sheets.
Particular attention should be paid to the derating curves given there. The soldering conditions
should also be observed. Temperatures quoted in relation to wave soldering refer to the pin, not
the housing.
If the components are to be washed varnished it is necessary to check whether the washing
varnish agent that is used has a negative effect on the wire insulation, any plastics that are used,
or on glued joints. In particular, it is possible for washing varnish agent residues to have a
negative effect in the long-term on wire insulation.
The following points must be observed if the components are potted in customer applications:
– Many potting materials shrink as they harden. They therefore exert a pressure on the plastic
housing or core. This pressure can have a deleterious effect on electrical properties, and in
extreme cases can damage the core or plastic housing mechanically.
– It is necessary to check whether the potting material used attacks or destroys the wire
insulation, plastics or glue.
– The effect of the potting material can change the high-frequency behaviour of the components.
Ferrites are sensitive to direct impact. This can cause the core material to flake, or lead to
breakage of the core.
Even for customer-specific products, conclusive validation of the component in the circuit can only
be carried out by the customer.
Display of ordering codes for TDK Electronics products
The ordering code for one and the same product can be represented differently in data sheets, data books,
other publications, on the company website, or in order-related documents such as shipping notes, order
confirmations and product labels. The varying representations of the ordering codes are due to different
processes employed and do not affect the specifications of the respective products. Detailed
information can be found on the Internet under www.tdk-electronics.tdk.com/orderingcodes
MAG TF T PD
Please read Cautions and warnings and
Important notes at the end of this document.
2020-03-12
Page 5 of 7
Important notes
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical
requirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application. As a
rule we are either unfamiliar with individual customer applications or less familiar with them than the
customers themselves. For these reasons, it is always ultimately incumbent on the customer to
check and decide whether a product with the properties described in the product specification is
suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or failure
before the end of their usual service life cannot be completely ruled out in the current state
of the art, even if they are operated as specified. In customer applications requiring a very high
level of operational safety and especially in customer applications in which the malfunction or failure
of an electronic component could endanger human life or health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by means of suitable design of the customer
application or other action taken by the customer (e.g. installation of protective circuitry or
redundancy) that no injury or damage is sustained by third parties in the event of malfunction or
failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our Material
Data Sheets on the Internet (www.tdk-electronics.tdk.com/material). Should you have any more
detailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order.
We also reserve the right to discontinue production and delivery of products. Consequently,
we cannot guarantee that all products named in this publication will always be available.
The aforementioned does not apply in the case of individual agreements deviating from the
foregoing for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to our General Terms and
Conditions of Supply.
7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard.
The IATF certifications confirm our compliance with requirements regarding the quality
management system in the automotive industry. Referring to customer requirements and customer
specific requirements (“CSR”) TDK always has and will continue to have the policy of respecting
individual agreements. Even if IATF 16949 may appear to support the acceptance of unilateral
requirements, we hereby like to emphasize that only requirements mutually agreed upon can
and will be implemented in our Quality Management System. For clarification purposes we like
to point out that obligations from IATF 16949 shall only become legally binding if individually agreed
upon.
Page 6 of 7
Important notes
8. The trade names EPCOS, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS,
DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK,
MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar,
SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, ThermoFuse,
WindCap are trademarks registered or pending in Europe and in other countries. Further
information will be found on the Internet at www.tdk-electronics.tdk.com/trademarks.
Release 2018-10
Page 7 of 7