About TT Electronics BI Technologies
We supply sensors and assemblies to the world's leading businesses. Our electromagnetic components portfolio includes both power and signal products, used for transportation and industrial applications. We have one of the industry’s most extensive lines of precision and trimming potentiometers, panel pots and tactile switches.
Technical Resources
Product Range
HA78M Series SMD Power Inductor

The HA78M series consists of ferrite based, SMD shielded power inductors designed with a wide range of inductances and package sizes.
The HA78M series of high-temperature, surface-mount power inductors is targeted for high-reliability automotive applications.
Due to its low core loss ferrite material, it is an excellent component for high frequency DC/DC converter applications with a switching frequency up to 3 MHz.
Features:
- Operating temperature range –55°C to +155°C
- Ambient temperature, max +115°C
- Temperature rise, 40°C
- Operating frequency up to 3MHz
- AEC-Q200 certified
Applications:
- Filtering of supply voltages
- Coupling, decoupling
- DC/DC converter
- Automotive electronics
Additional Features:
- Many case sizes
- Magnetically shielded
- High mechanical stability
- Low DC resistance
- High rated current up to 19.90 Amps
- RoHS certified
Product Documentation
HA78DM SMD Power Inductor

The HA78DM series is a SMD coupling of two shielded, ferrite-based power inductors, designed to meet a tight coupling factor.
The HA78DM series of high-temperature, surface-mount, coupled power inductors is ideal for LED automotive applications.
This series excels in high-frequency, DC/DC converter applications, with a switching frequency up to 3 MHz and tight coupling.
Features:
- Operating temperature range –55ᵒC to +155ᵒC
- Tight coupling factor, typically 99%
- Ambient temperature, 115ᵒC Max.
- Temperature rise, 40ᵒC
- Operating frequency up to 3MHz
- AEC-Q200 certified
Applications:
- Common-mode choke
- DC/DC converter, especially for SEPIC topology
- 1:1 Transformer
Additional Features:
- High-rated current
- Low DC resistance
- RoHS compliance
Product Documentation
HA78DM SMD Power Inductor

The HM78M series of power inductors is ferrite based, magnetically shielded and features low resistance values. It has a low DC resistance and high saturation current.
It is ideal for high power density applications, where size is critical. The HM78M is used for high power density DC-DC applications where the ambient temperature is less or equal to 85°C.
Features:
- -40°C to 125°C operating temperature
- 5 amps max. rated current
- Temperature rise, maximum 40°C
- Operating frequency up to 3MHz
- Magnetically shielded
Applications:
- Buck DC-DC converters
- High efficiency DC-DC converters used with battery supply
- EMI inductance in PI filters
Benefits:
- Small footprint for given rating which saves PCB area
- Magnetically shielded for robust operation
- Low cost
Product Documentation
HM66M Series Surface Mount Power Inductors

he HM66M series is a shielded miniature low profile SMD power inductor, with ferrite material core. It is characterized by low losses at high frequencies.
The HM66M is designed specifically for power supplies and frequency converters that operate with fast switching power semiconductors on a GaN basis.
Features:
- -40°C to 125°C operation temperature
- 10 amps maximum rated current
- 680 μHenry maximum inductance value
- Temperature rise, maximum 40°C
- Operating frequency up to 4MHz
- Magnetically shielded
- Low profile — from Hmax: 3.0mm to 4.1mm depending on the case size
Applications:
- Low profile buck DC-DC converters
- Low profile POL converter
- Output power filter for forward converter
- Power inductance for electronic breaker
- Industrial automation systems
- Industrial DC-DC converters
- Industrial EMI filters
Benefits:
- Compact and low profile size for PCB space saving
- Magnetically shielded for robust operation
- Various package sizes for flexible design
Product Documentation
HM79M Power Inductor

New from TT Electronics comes the HM79M family of power inductors, a surface mount power inductor with ferrite core for industrial applications, including automation systems, DC-DC converters, and EMI filters.
The HM79M offers system designers low DC resistance and high saturation current, able to meet 125°C temperatures. Its ferrite core and wide temperature range makes this power inductor ideal for high power density applications, such as high efficiency DC-DC converters and EMI/low pass DC filters.
Features:
- -55°C to +125°C operation
- Ambient temperature, maximum to +85°C
- Temperature rise, maximum 40°C
- RoHS Compliant
- Magnetically unshielded
Applications:
- Industrial
- Automation systems
- DC/DC converters
- EMI filters
Product Documentation
HA42A Series Gate Drive Transformer

The HA42A series gate drive transformer is a miniature surface mount design solution targeted for high reliability automotive industry applications. Gate drive transformers are used to deliver the controlling pulses while providing isolation between the MOSFET and the controlling drive circuit. It is mechanically robust with lower leakage inductance which gives it the advantage of much lower turn on and turn off delay time. The HA42A design has higher current capability and lower temperature rise performance. It is ideal for high efficiency of battery management system application where size is critical and AEC-Q200 certification assures performance and reliability levels that automotive applications demand.
Features:
- -40°C to 125°C Operation
- Ambient Temperature, Maximum to +85°C
- Temperature Rise, Maximum 40°C
- RoHS Compliant
- AEC-Q200 Certified
Applications:
- Automotive
- HV/EV Battery Management System
- Industrial
- Switch mode power supply
Product Documentation
HA86A Series Gate Drive Transformer

HA86A Series gate drive transformer is a miniature surface mount design solution targeted for high reliability automotive applications. Gate drive transformers are used to deliver the controlling pulses while providing isolation between the MOSFET and the controlling drive circuit. It is mechanically robust with lower leakage inductance which gives it the advantage of much lower turn on and turn off delay time.
The HA86A design has higher current capability and lower temperature rise performance. It is ideal for high efficiency of Battery Management System applications where size is critical and AEC-Q200 certification assures performance and reliability levels that automotive applications demand.
Features:
- -40°C to 125°C Operation
- Ambient Temperature, Maximum to +85°C
- Temperature Rise, Maximum 40°C
- RoHS Compliant
- AEC-Q200 Certified
- Design for Freescale HV/EV Battery Management System
Applications:
- Automotive
- HV/EV Battery Management System
- Industrial
- Switch mode power supply
Product Documentation
Miniature Slide Potentiometer

The PSM is a miniature slide potentiometer that has a long operational life. Its small form factor results in less space on PCBs. These reliable potentiometers have a smooth slide and are offered at a low cost.
Features:
- Microminiature package (5mm wide, as low as 4mm travel)
- Smooth slide
- Long operational life
- Carbon composite resistive element
- Options for resistance, length, etc.
- Surface mount option
- Through hole option (only with 4 and 5 mm mechanical travel)
Applications:
- Virtual reality
- Headset volume control
- Lighting control
- Power tool speed control
- Medical/dental position sensing
Market Segments:
- Pro-audio
- Consumer
- Medical
- Industrial
Benefits:
- Low system cost
- Design flexibility
- Reliable/low maintenance costs
Product Documentation
HA74 Series Low Profile Surface Mount Inductors

HA74 series surface mount inductors are miniature power inductors targeted for high-reliability automotive industry applications. It is mechanically robust, offers a higher inductance value and higher saturation current capability.
The lower DC resistance offers a lower temperature rise performance. This series is ideal for high- efficiency DC-DC applications where height, size and higher inductance value are needed. The AEC-Q200 qualification makes it ideal for automotive applications and special for the ADAS application.
Features:
- -50°C to 155°C operation
- Inductance value from 4.7µhenry to 33µh
- Rated current from 1.2Amphs to 2.9Amphs
- Size maximum 5.5x5.5x2.05mm
- RoHS compliant
- AEC-Q200 certified
Applications:
- Transportation
- Powertrain
- ADAS
- Engine control
- Transmission control
- Industrial
- Automation system
- Low profile DC-DC converter
Product Documentation
HA72L Moulded, Surface-Mount Inductor

The HA72L series of moulded inductors have been designed with the latest composite moulded core materials to maximise inductance, temperature performance and saturation current while minimising DC resistance and physical size. The result is a compact, surface mount component that operates in demanding environments with saturation currents up to 80 amps.
Features:
- Operating temperature range – 55°C to +155°C
- Ambient temperature, maximum +115°C
- Temperature rise, 40°C
- RoHS compliant
- AEC-Q200 certified
Product Documentation
HA66 Miniature Low Profile, Shielded Surface Mount Inductors

The HA66 series is a low profile, low loss, ferrite-based inductor designed with a wide range of inductances and package sizes. It is very compact, magnetically shielded, and has low DC resistance and high saturation current. This part is able to meet an operating temperature of 155°C. It is suited for high power density applications where size is critical. This series is ideal for high efficiency DC-DC converters using high switching frequencies to 3MHz as well as EMI and low pass DC filter. This part is AEC-Q200 certified, assuring performance and reliability levels that automotive applications and high reliability industrial applications demand.
Features:
- Operating Temperature Range -40°C to +125°C
- Ambient Temperature, Maximum +85°C
- Temperature Rise, Maximum 40°C
- RoHS Compliant
- AEC-Q200 Certified
Product Documentation
HA66 Data Sheet | PDF
HA66 Fast Facts | PDF
HA66 Press Release | PDF
HA19 Series Common Mode Chokes

The HA19 common mode choke is designed specifically for noise suppression applications found in the growth and expansion of new generation vehicles such as electric vehicles (EVs) and plug-in hybrid vehicles (PHVs). The HA19 series offer high efficiency and excellent current handling in a rugged construction. It is mechanically robust and features low DC resistance and low temperature rise performance. HA19 is ideal for high efficiency electric power steering EMI applications where size and AEC-Q200 certification is critical.
Features:
- Operating temperature range -40°C to +125°C
- Rated current up to 44amps
- Ambient temperature, maximum +85°C
- Temperature rise, maximum 40°C
- Reduces line conducted interference
- Low loss ferrite core
- Proven performance in maintaining transmission signal integrity
- Excellent performance in rugged environments
- RoHS compliant
- AEC-Q200 certified
Applications:
- Ideal for high frequency EPS noise suppression applications
- Transportation
- Electric Power Steering
- Electronic Control Units
- Engine Control
- Transmission Control
- Industrial
- Switch Mode Power Supply
- DC/DC Converters
Product Documentation
HA78D-128 Series Shielded Surface Mount Coupled Inductors

The HA78D series of coupled inductors was designed especially for use in a variety of circuits, including Flyback, multi-output buck, SEPIC and ZETA application. Its high leakage inductance makes it ideal for SEPIC applications; the loosely coupled winding (K=0.8) improves SEPIC efficiency by reducing circulating current and providing 2x the ripple current reduction of separate inductors.
These inductors offer high efficiency and excellent current handling in a rugged environment. It is ideal for high frequency DC-DC converters and VRM/VRD applications due to its low loss ferrite core and high temperature rating of 155°C. The HA78D works well in high stress environments and is AEC-Q200 certified for the automotive market. The HA78D can also be used as 2 single inductors connected in a series, in parallel, or as a common mode choke (filter inductor) for EMI noise reduction.
Features:
- Loosely coupled winding (K = 0.8) (for-L128 series)
- High operating temperature (-50°C to 155°C)
- AEC-Q200 automotive certification
- Flexible design allows for series orparallel connection
- Low loss ferrite core
- High efficiency
- Excellent current handling
- High leakage inductance
Benefits:
- Improved SEPIC efficiency due to high leakage inductance
- Automotive-ready due to AEC-Q200 certification
- Customizable coupled winding factor
- Low losses at high frequency applications —> less temperature rise
- High operating temperature allows for a higher ambient or temperature rise
- Small size design allows for smaller PCB footprint
Applications:
- Dual inductance for a SEPIC converter
- DC-DC converter
- EMI filter
Market Segments:
- Automotive lighting
- Hybrid car
- Start and stop vehicle
- Electrical power steering
Product Documentation
HM210-05K060LFTR 5KV Flyback Isolation Transformer

Features:
- Operating Temperature -40°C to +155°C
- Small size
- High voltage isolation
- Developed for Avago IGBT Chipset ACPL-32JT/302J
Benefits:
- 5KV high voltage isolation; can withstand up to 7kV
- Compact SMD package
- Lower cost in comparison to optoelectronic (semi-conductor) solution
- Higher ratability in comparison to optoelectronic solution
- Less susceptible to temperature effects than optoelectronic solution
Applications:
- Industrial
- Inverters
- Uninterruptible power supplies
- Switch mode power supplies
- Automation systems
- DC/DC converters
- Renewable energy inverters
- AC and brushless DC motor drives
Series HM/HA73-E Shielded Surface Mount Inductors

Features:
- Rated current up to 65 amps
- Compact size
- Rugged, shielded construction
- Lowest DCR/μH in its package size
- Handles high transient current spikes without saturation
- Ultra-low buzz noise
- AEC-Q200 certified
- -50°C to +155°C operation
- RoHS compliant
- Ideal for high temperature, high power applications
Benefits:
- Cost savings in comparison to toroidal design
- Shielded construction offers excellent resistance to corrosion
- Compact size offers space saving on the PCB
- Automotive-ready due to AEC-Q200 certification, at no extra charge
- Lower weight results in less fuel consumption
Applications:
- Transportation
- Powertrain
- Engine control
- Transmission control
- Industrial
- Switch mode power supply
- Automation system
- DC/DC converters
Product Documentation
HM73E Data Sheet | PDF
HM/HA73E 10 Fast Facts | PDF
HM73E 10 Product Focus| PDF
Hollow Shaft Position Sensors
Applications include Industrial, Medical and Transportation
Product Benefits and Features:
- Stable output characteristics in harsh environment
- High accuracy
- Dust Proof
- Tight linearity of ±2%
- Low noise <80mV
- Low profile of 2.2mm
- D formation thru-hole anti-slip rotor (optional: H-type)
- Shaft hole up to f4mm
- Electrical angle selections
Product Documentation

PHS04
The PHS04 series is a rotary position sensor that features a small footprint, smooth operation, and a 300,000 life cycle. Some applications are game controllers and robot joint angle controls.
Applications:
- Robot joint angle control
- Game controller
Product Documentation

PHS07
Features:
- Dust-proof construction protects the interior from dust, which maintains stable characteristics
- High accuracy and long life over 1 million cycles
- Stable output characteristics can be secured for external noise and temperature changes
Product Documentation

PHS11
The PHS11 series is a rotary position sensor that features dust proof construction, an ultra thin size, and a life cycle of 1 million cycles. Some applications are HVAC sensors and motor drive units.
Applications:
- Rotary angle sensor
- Electric motor-driven bicycle
- Motor drive unit
- HAVC sensor
Product Documentation
MagnePot 8150 Series - NON-CONTACTING MULTI-TURN ROTARY POSITION SENSOR

- Shock up to 100g, vibration up to 10g, per MIL R-39023
- 10M+ shaft rotations with no output signal degradation
- Eliminates sliding contact noise across multiple turns
- 3, 5, or 10 turn with up to 3600° travel
- Protection options include IP50/67 sealing and sealed shafts
The MagnePot rotary position sensor is a new non-contacting multi-turn rotary position sensor available in three, five, and ten turn models. Various output options are available. Non-contacting technology provides consistent performance over a significantly extended life.
Product Documentation
HA72E Series New High Performance, Low Loss, Moulded Inductors for Extreme Environments

TT electronics has launched the next generation of its moulded inductor devices. The HM72E and HA72E are engineered for high performance and cost effectiveness and will utilise proprietary blends of alloy core materials that are optimised for high temperature stability, high dc bias capability, low core losses as well as minimising oxidation.
Designers of industrial and automotive DC/DC converters and other power applications where high power density is a requirement will benefit from the rust resistant over-moulded construction and the wide operating temperature rating. The new moulded inductors are operational from -40oC to +155oC making them ideal for powertrain applications where environmental conditions are demanding.
Both devices are targeted at designers who require a buck, boost or buck-boost inductor for voltage regulation at fast switching frequencies up to 3MHz but also need to save space. Additionally, the HA72E series is qualified to AEC-Q200 certification for automotive applications. Further features of the range include DC bias current of up to 45A and inductance levels ranging from 0.10uH to 33uH at a maximum dimension of 6.8 x 7.3 x 3mm (LxWxH).
The HM72E and HA72E are available in tape and reel packaging. They both have a lead time of approximately 10-12 weeks.
Product Documentation
Linear Sensors/Precision Potentiometers

- 400 Series
- Exceeds DO-160E environmental specification
- Unique sealing passes multi-icing cycles testing
- Stroke sizes from 0.5” to 6.0”
- End-bearings for different applications
- Redundant output & custom harness options
- Leads included on standard sensors
- Industrial, mil-aero & consumer applications
Product Documentation
Rotary Sensors

| NEW Incremental two-bit gray code encoders (EN11) | Datasheet |
| Automotive steering sensors with low-hysteresis for critical position and torque loading | Datasheet |
| Long-life rotary sensors with 1 million duty cycle (P270) | Datasheet |
| Low-profile precision control potentiometers (6130) | Datasheet |
| Non-contact Hall Effect sensors with 10 million rotations duty cycle (6120) | Datasheet |
| Multi-turn position sensors (7280) | Datasheet |
SMP & SMHP Surface-mount Power Resistors

- 10W, SOIC package (SMP series)
- 10Ω to 10KΩ resistance range
- Short-term overloads & pulse withstand capability
- ±1% & ±5% tolerances
- -55°C to 155°C temperature range
Product Documentation
- 20W, TO-263 package (SMHP series)
- 0.01Ω to 51KΩ resistance range
- Direct mounting to a heatsink
- Short-term overloads & pulse withstand capability
- ±1% & ±5% tolerances
- -55°C to 155°C temperature range
Product Documentation









