RJ45 Integrated Magnetics Connector: VOOHU SYT111B002FA2A1D as a Replacement for Pulse J0011D21BNL — Comparison Report

The VOOHU SYT111B002FA2A1D is a replacement candidate for the Pulse (a YAGEO company) J0011D21BNL: both are 1×1 Tab-Down 100Base RJ45 integrated magnetics connectors with compatible pinout and mounting, swapping the commercial 0 to +70°C part for an industrial -40 to +85°C grade — delivering greater temperature margin.

#1. Competitor Product Overview (Pulse Electronics, a YAGEO company)

The Pulse J0011D21BNL is a standard J0-series PulseJack — a 100BASE-TX 1×1 Tab-Down RJ45 integrated connector module (ICM) with magnetics, 8-pin, with EMI shielding fingers and green/yellow (G/Y) LEDs. It meets IEEE 802.3 100Base-TX with a minimum 350 µH OCL (8 mA bias), 1500 Vrms isolation (2250 VDC Hipot), a commercial 0 to +70°C operating range and 260°C peak wave-solder temperature, using an industry-standard RJ-45 pinout compatible with existing PulseJacks.

#2. VOOHU Replacement Overview (Suzhou VOOHU Electronic Technology Co., Ltd.)

The VOOHU SYT111B002FA2A1D covers a wider temperature range. It is a 100BASE 1×1 Tab-Down RJ45 integrated magnetics connector with 8 signal pins and dual-color (green/yellow) LEDs, built for an industrial -40 to +85°C range; its pin definition and mounting are compatible with the J0011D21BNL, with greater temperature margin than the commercial-grade original.

#3. Key Parameter Comparison

The table below uses the Pulse J0011D21BNL datasheet parameters as the baseline, with the corresponding VOOHU SYT111B002FA2A1D specs filled in (only parameters specified by both and matchable one-to-one are listed).

Notes:

1. 1.Both are 1×1 Tab-Down 100Base RJ45 integrated magnetics connectors with 8 signal pins and dual-color LEDs; pin definition and mounting are compatible (Pulse uses an industry-standard RJ-45 pinout). Verify the PCB footprint and panel cutout against both drawings.
2. 2.Operating-temperature difference (key): the Pulse J0011D21BNL is commercial-grade 0 to +70°C, while VOOHU is industrial-grade -40 to +85°C. VOOHU fully covers the commercial range and extends it on both ends, making it better suited to industrial, outdoor and wide-swing thermal environments — replacing the Pulse part gives extra temperature margin.
3. 3.Specification basis: Pulse states insertion loss / return loss / crosstalk / CMR as Typ (typical), while VOOHU states them as Min/Max (guaranteed limits). Crosstalk matches exactly on both bands and limits (-40/-35/-30 dB @ 1–30/30–60/60–100MHz); return loss and CMR use different frequency bands (see table) and should not be compared point-by-point.
4. 4.Matching items: OCL (350 µH Min @ 8 mA), turns ratio (1CT:1), isolation (1500 V AC and 2250 V DC), durability (750 cycles), wave-solder temperature (260°C) and LED configuration are identical or equivalent on both sides.
5. 5.The Pulse J0011D21BNL includes EMI shielding fingers; if your design relies on EMI fingers, confirm the shielding/grounding configuration with VOOHU. Single-side items such as storage temperature (only VOOHU specifies -40 to +85°C) and MSL are omitted from the table.

#4. Applications

1. 1.Ethernet switches and routers (including hubs and SOHO devices).
2. 2.Server / PC LAN-on-Motherboard (LOM) and network interface cards (NIC).
3. 3.Industrial Ethernet, edge gateways and SCADA: the -40 to +85°C range fits harsh factory environments and improves reliability over commercial-temp-only parts.
4. 4.Security & surveillance (IP cameras, NVR/DVR) and outdoor networking equipment.
5. 5.Other 100M-Ethernet devices, especially those with industrial wide-temperature or EMI requirements.

#5. FAQ

QAre VOOHU SYT111B002FA2A1D and Pulse J0011D21BNL pin-compatible?

Both are 1×1 Tab-Down 100Base RJ45 integrated magnetics connectors with 8 signal pins and green/yellow LEDs; pin definition and mounting are compatible (Pulse uses an industry-standard RJ-45 pinout). Confirm the PCB footprint and panel cutout against the drawings, and verify with samples before production.

QAre the two products in the same temperature grade?

VOOHU is wider. The Pulse J0011D21BNL is commercial-grade 0 to +70°C, while VOOHU is industrial-grade -40 to +85°C — it fully covers the commercial range and extends both ends, suiting industrial Ethernet and environments with large temperature swings, giving you more temperature margin.

QAre samples available for SYT111B002FA2A1D?

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.

#Why VOOHU?

• One-stop sourcing: connectors + magnetics + interface chips, full support from selection to small-batch production.
• Custom solutions: just share your application requirements and budget to get a tailored solution with professional technical support.
• Fast development: rapid FAE response, efficient sampling, shorter time-to-market.
• Core qualifications: ISO9001, ISO14001, RoHS, REACH.

For more information, visit VOOHU: China www.voohu.cn ｜ Overseas www.voohuele.com ｜ Technical support: song.lei@voohu.cn