Compiled from both manufacturers' published datasheets. Verify with samples and the PCB footprint before production.
For a 7499111001A socket, VOOHU SYT111Q068HWA1D is a functional alternative — verify with samples in your design. Each part is a single-port, right-angle, tab-down 1000BASE-T MagJack (RJ45 jack with integrated magnetics) with no LEDs, published for −40 to +85 °C. Both datasheets put the four PHY-side pairs on pins 1/2, 3/6, 4/5 and 7/8, the centre-tap common on pin 9 and GND on pin 10, and both show the common mode chokes on the cable side. Plan the board change around the shield pins: Würth Ø1.6 mm on 15.49 mm centres; VOOHU Ø1.63 mm on 15.75 mm centres. The two datasheets also state their isolation tests under different conditions, covered below.
#Würth 7499111001A and VOOHU SYT111Q068HWA1D side by side
Every row names the page it was read from. Würth Elektronik figures: WE-RJ45LAN 7499111001A datasheet, rev 002.000. VOOHU figures: SYT111Q068HWA1D datasheet, REV A0, or the SYT111Q068HWA1D product page where the row says so. Lengths are in millimetres as each drawing prints them; "Not stated" means the document gives no value.
#What to check before moving a 7499111001A layout to SYT111Q068HWA1D
Shield-pin holes come first. The two drawings dimension the shield pins differently: Würth Ø1.6 mm on 15.49 mm centres; VOOHU Ø1.63 mm on 15.75 mm centres. That is a 0.26 mm difference in spacing on the widest-spaced pair of holes in the pattern. Lay the VOOHU recommended PCB layout (drawn as viewed from the component side) over your existing pads, check these two holes before anything else, and confirm the fit on a sample board.
Locating posts and signal holes. Both drawings put the two locating posts 11.43 mm apart and the ten signal holes on a 1.27 mm / 2.54 mm stagger, but the printed diameters are not the same: Ø3.25 mm (Würth) against Ø3.20 mm (VOOHU) for the posts, and Ø0.9 mm against Ø0.89 mm for the signal pins. If the board was drilled to the Würth sizes, compare the finished hole sizes your fabricator delivers with the VOOHU drawing and try a sample in them.
Isolation test wording. Würth gives an insulation test voltage of 1500 V (RMS) minimum for 1 minute. The VOOHU datasheet gives a hi-pot of 2250 V DC for 6 s at 1 mA, primary to secondary, and does not list an AC value. An AC test and a DC test are different methods, so the two figures should not be read as equal or converted into each other. If your safety file, customer specification or incoming inspection is written around an AC test, send that requirement to our FAE team and ask for the AC test condition of SYT111Q068HWA1D before it goes into your qualification plan.
Body, pins and front panel. SYT111Q068HWA1D measures 16.00 × 21.10 × 13.45 mm and its pins extend 3.6 mm below the board; the Würth drawing gives 16.0 × 21.25 × 13.5 mm and 3.5 ± 0.5 mm. The suggested front-panel cutouts also differ — 16.76 × 14.13 mm for Würth, 16.15 × 13.75 mm for VOOHU, which marks its figure as reference only. Where the jack sits behind an enclosure opening, check the opening with a sample in place rather than from either drawing alone.
Magnetics and the missing LEDs. Inside, both datasheets draw a transformer on the PHY side of each pair followed by a common mode choke on the cable side, with the cable-side centre taps returned through 75 Ω resistors to a 2 kV capacitor on pin 10. OCL is 350 µH minimum on both; VOOHU also states the 8 mA DC bias used for that measurement. Because neither jack has LEDs, link and activity indication, if the product needs it, has to come from elsewhere on the board.
#Where does SYT111Q068HWA1D fit?
SYT111Q068HWA1D suits a single gigabit port with no indicator LEDs at the jack, mounted tab-down in through-hole on boards such as industrial controllers, gateways and embedded computers that work within −40 to +85 °C. Neither this part nor the 7499111001A has a published PoE rating; for a powered port, start from the PoE filter in the RJ45 selector instead.
#FAQ
What is a 7499111001A equivalent?
VOOHU SYT111Q068HWA1D is a functional alternative to the Würth Elektronik 7499111001A — verify with samples in your design. Both are 1 × 1, tab-down 1000BASE-T RJ45 jacks with integrated magnetics and no LEDs. Allow for two differences: the shield pins sit on 15.75 mm centres on the VOOHU drawing and 15.49 mm on the Würth drawing, and the isolation test is stated as 2250 V DC for 6 s by VOOHU and 1500 V RMS for 1 min by Würth.
How do you connect the 7499111001A or SYT111Q068HWA1D RJ45 MagJack to a PHY?
Route the four PHY differential pairs to pins 1/2, 3/6, 4/5 and 7/8. Pin 9 is the common of the PHY-side centre taps (labelled VCC on the Würth schematic); bias or decouple it the way your PHY vendor's reference design specifies for its line driver. Pin 10 is GND, and on both parts the four 75 Ω cable-side terminations reach it through a 2 kV capacitor, written as 0.001 µF by Würth and 1000 pF by VOOHU. There are no LED pins to route.
Will SYT111Q068HWA1D fit a PCB laid out for 7499111001A?
On paper, the ten signal holes (1.27 / 2.54 mm stagger) and the two locating posts (11.43 mm apart) line up. The shield pins are where the drawings part: 15.49 mm centres with Ø1.6 mm holes for Würth, 15.75 mm centres with Ø1.63 mm holes for VOOHU. Post and signal hole diameters also differ slightly (Ø3.25 / Ø0.9 mm against Ø3.20 / Ø0.89 mm). Overlay the VOOHU drawing on your layout, send it to our FAE team for a check, and build a sample board before release.
What isolation test do the 7499111001A and SYT111Q068HWA1D datasheets list?
The Würth 7499111001A datasheet lists 1500 V (RMS) minimum for 1 minute. The VOOHU SYT111Q068HWA1D datasheet lists 2250 V DC for 6 s at 1 mA, primary to secondary, with no AC figure. Because one is an AC test and the other a DC test, compare each against the method your own specification names, and ask our FAE team for an AC test condition if your plan requires one.
#Request SYT111Q068HWA1D samples with a layout check
Send the 7499111001A footprint from your board, together with the isolation-test requirement in your safety file, through the sample request form. Samples are available for evaluation, and selected parts are free of charge. Our FAE team will be glad to confirm the options for your project. Our FAE team can suggest suitable parts and help check the design — for SYT111Q068HWA1D, the shield-pin and locating-post holes against your pads and the AC or DC hi-pot condition your plan calls for.
VOOHU supplies RJ45 and SFP connectors, LAN and PoE transformers and common mode chokes from Suzhou, China, to more than 1,500 customers.
To compare other tab-down gigabit jacks without LEDs, open the RJ45 connector selector, already filtered to integrated magnetics, tab down and no LED.
Related products: SYT111Q068HWA1D : single-port, through-hole gigabit (1000BASE-T) RJ45 jack with integrated magnetics, mounted tab down, without LEDs, rated −40 to +85 °C. SYT111Q068DB1A1D : the version with yellow and green LEDs, also tab down and 1000BASE-T with integrated magnetics, for products that need port indicators at the jack.
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