YQM（元器貓）)offers a dual-category power converter portfolio under its Power Converter product line: AC/DC converters with 3KVAC isolation accepting universal 85–305 V AC input (5 W–10 W), and isolated DC/DC converters spanning 1 W to 20 W with up to 3KVDC isolation. All ten series are available in SMD, SIP, and DIP packages, covering the full spectrum from board-level isolated power distribution to direct off-line SMPS power supply replacement. The specifications below are verified from individual product pages on yqmec.com.

Figure 1: YQM05AF — 5W AC/DC converter with 3KVAC isolation in compact SIP package (26.2 × 14 mm), operating from universal 85–305 V AC input. Representing the YQM AC/DC power module family.

YQM Power Converter Product Matrix (Verified Specs)

AC/DC Converters — YQM05AF, YQM10AF, YQM10AG (3KVAC Isolation)

The YQM05AF (5 W), YQM10AF (10 W), and YQM10AG (10 W) are AC/DC converters with 3KVAC isolation, designed to operate directly from universal AC mains (85–305 V AC). This input range covers single-phase 100–240 V AC nominal worldwide, making these modules a drop-in SMPS power supply replacement in industrial control boards, power instruments, and smart home appliances. The YQM05AF is positioned as a direct alternative to the LS05-15B12R3 series. The YQM10AG supports both AC and DC input for applications with hybrid supply requirements — a unique capability in this power class. All three series are built as the upgrade type of switching power supply, prioritizing high reliability, small footprint, and cost-effectiveness for the industrial and consumer electronics markets.

DC/DC Converters — 10 W–20 W Wide-Input (1.5KVDC Isolation)

The YQM10DB (10 W) and YQM20DB (20 W) are isolated DC/DC converters in DIP packages with 1.5KVDC isolation. YQM10DB offers the broadest input coverage in the YQM DC/DC lineup: 9–18 V, 18–36 V, and 36–72 V (2:1 ratio) plus 9–36 V and 18–72 V (4:1 ratio). YQM20DB focuses on 4:1 wide input — 9–36 V and 18–72 V — delivering 20 W in a 25.4 × 25.4 mm DIP footprint with output accuracy of ±1%. A single YQM20DB can serve both 12 V and 24 V nominal bus architectures; the 18–72 V variant directly addresses 48 V telecom and PoE infrastructure. For dc dc converter 24v to bipolar ±12 V or ±15 V rail generation in instrumentation, railway electronics, and telecommunications line cards, the YQM10DB with its dual-output configuration provides a verified, single-module solution.

1 W Miniature DC/DC Converters — YQME1, YQMET, YQMR-1W, YQMV1

The 1 W isolated DC/DC converter family covers every PCB mounting technology. YQMET targets fully automated SMT assembly with a 13.7 × 8 mm SMD package and 3KVDC isolation — qualified for lead-free reflow solder profiles. YQMR-1W uses a 19.5 × 9.8 mm SIP package, also at 3KVDC. YQMV1 (3KVDC) and YQME1 (isolated) each provide dual-footprint SIP/DIP options for layout flexibility. All four series accept input voltages of 3.3, 5, 12, or 24 V and deliver matching isolated outputs. Internal SMD construction with integrated magnetics achieves the 1 W power level at minimal board area — the ideal solution for noise reduction, voltage isolation, and ground-loop breaking in distributed power systems.

YQMP78XX-0.5 — Pin-Compatible 78xx Switching Regulator

The YQMP78XX-0.5 is a non-isolated switching regulator in an 11.6 × 7.5 mm SIP package with industry-standard 78xx pinout. It accepts 12 V or 24 V input and incorporates high-efficiency switching topology, short-circuit protection, and thermal shutdown — with no heatsink required. The manufacturer explicitly positions it as a direct pin-compatible replacement for LM78xx linear regulators. For any legacy design where a 78xx regulator runs hot or constrains the thermal budget, YQMP78XX-0.5 provides a verified drop-in upgrade path without PCB layout changes.

Figure 2: YQM power modules across key application domains — from industrial control boards and telecom base stations to IoT edge nodes and smart home appliances.

Application Scenarios (Mapped to Verified Product Specs)

• Industrial Control & Power Instruments: YQM05AF and YQM10AF (85–305 V AC, 3KVAC) power control boards directly from AC mains without a separate AC-DC front-end. YQM10DB (9–36 V, 4:1) supplies isolated ±15 V rails for analog signal chains in PLC I/O modules.
• Smart Home & Healthcare: YQM10AG provides 3KVAC safety isolation from mains with low no-load consumption, suiting always-on smart home hubs and healthcare devices.
• Telecommunications & Railway: YQM20DB (18–72 V, 20 W, 1.5KVDC) covers 48 V telecom and 72 V railway bus standards in a single part. YQM10DB's 36–72 V range serves 48 V PoE and network equipment.
• IoT Edge Nodes & Distributed Power: YQMET (SMD, 3KVDC, reflow-compatible) enables fully automated pick-and-place for high-volume IoT gateways. YQMV1 and YQME1 dual-footprint options support both prototyping (DIP) and production (SIP) on a single BOM line.
• Legacy System Upgrades: YQMP78XX-0.5 directly replaces LM78xx linear regulators, eliminating heatsinks without PCB changes.

Quick Selection by Input Source

1. Powered from AC mains (85–305 V AC)? → YQM05AF (5 W), YQM10AF (10 W), or YQM10AG (10 W, DIP). All with 3KVAC isolation.
2. Powered from a DC bus? Determine bus voltage: 3.3/5/12/24 V → 1 W series (YQME1, YQMET, YQMR-1W, YQMV1). 9–72 V → YQM10DB (10 W) or YQM20DB (20 W).
3. Replacing a 78xx linear regulator? → YQMP78XX-0.5, pin-compatible, no heatsink, with short-circuit and thermal protection.

All YQM power converters are documented under YQM Power Management. For application-specific selection support, volume pricing, or sample requests, contact the YQM technical sales team.