Datasheet 3D Model Technical Bulletin

WA8351-AL Ultrasonic

Sensing Transformer

Compact, low-profile package (8.2 × 6.6 × 5.4 mm)
reduces board space by up to 20% and is 24% shorter than competitive options
Optimized for the Texas Instruments PGA460-Q1
Ideal for a variety of available ultrasonic transducers
Excellent temperature stability up to 125°C
High performance for ultrasonic time-of-flight (TOF) sensing
AEC-Q200 Grade 1 (−40°C to +125°C)
Ideal for automotive ADAS and industrial applications such as liquid level sensing, flow sensing, or fluid identification

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Count	Unit price
1	$2.56
100	$2.17
250	$1.88
500	$1.64
1000	$1.28
2500	$1.10
5000	$1.00

For high volume or non-stock items, request a quote.

Packaging

C = 7" machine-ready reel

. in stock, ready to ship today.

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Specifications

Electrical specifications at 25°C.

Part number 1 (Hover for schematics)	Inductance at 0A (mH) 2 (Tolerance: ±10%)	DCR max 3			Leakage Inductance max (µH) 4	Turns Ratio	Isolation Voltage (Vrms) 5
Part number 1 (Hover for schematics)	Inductance at 0A (mH) 2 (Tolerance: ±10%)	W1 (Ω)	W2 (mΩ)	W3 (mΩ)	Leakage Inductance max (µH) 4	W1 : W2 : W3	Isolation Voltage (Vrms) 5
WA8351-ALC	3.0	0.74	740.00	7560.00	25.2	1 : 1 : 8.4	500

Notes

When ordering, please specify packaging code: WA8351-ALC
Inductance is tested between pins 4 and 6 at 100 kHz, 1.0 Vrms, 0 Adc.
DCR is with the primary windings connected in series and the secondary windings connected in parallel. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
Leakage inductance is measured between pins 4 and 6 with all other pins shorted.
500 Vrms, one minute isolation (hipot) between primary and secondary.

Termination:

RoHS-compliant. 260°C compatible. Tin-silver-copper over tin over nickel over phos bronze.

Packaging:

C = 7″ machine-ready reel. EIA-481 embossed plastic tape (250 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (1000 parts per full reel).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +125°C

Storage temperature range:

Component: –40°C to +165°C
Tape and reel packaging: –40°C to +80°C

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Schematics

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

590 mg

Packaging:

250/7″ reel; 1000/13″ reel Plastic tape: 16 mm wide, 0.5 mm thick, 12 mm pocket spacing, 5.54 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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WA8351-AL Ultrasonic

Sensing Transformer

Selected configuration not available

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

General specification

Soldering/Washing

Warning