953-1A-12DG-2 12VDC 5-Pin PCB Power Relay, 1 Form A (SPST-NO) 30A 250VAC/30VDC, Sealed — Compatible with HSINDA 953G Footprint, HVAC Furnace Blower Compressor Appliance Control Board

953-1A-12DG-2 Sealed PCB Power Relay — Compatible with HSINDA 953G Footprint A high-capacity 12VDC coil, 5-pin, 1 Form A (SPST-NO) power relay designed for HVAC, appliance and industrial control boards. Use this part when your control PCB calls for the HSINDA 953G sealed 5-pin footprint with two common terminals. Key SpecsContact form: 1 Form A (SPST-NO), Ag-alloy contactsRatings (resistive): up to 30A at 250VAC or 30VDC (max switching: 250VAC / 30VDC)Coil: 12VDC (≈0.9W), resistance ~155 Ω, nominal current ≈77 mAOperate / release time: ≤15 ms / ≤10 msElectrical life: 1×105 ops; mechanical life: 1×107 opsPins / footprint: 5-pin with two common terminals (low-resistance path)Body size: approx. 27.4 × 31.8 mm; sealed housing; RoHSOperating temp: −40 °C to +85 °CTypical ApplicationsCompatible with HSINDA 953G-footprint relay positions on HVAC control boards (compressor, blower, heater)Appliance and industrial control PCBs: pumps, chargers, general motor controlInstallation NotesPower down and discharge capacitors; observe ESD precautions.Desolder the original relay and clean the pads.Insert this unit per board silkscreen/orientation; solder all five pins and inspect joints.Verify coil drive polarity if a diode/transistor driver is used; confirm creepage/clearance.Functional test under load; reapply conformal coating if the board requires it.Compatibility ChecklistBoard calls for “953-1A-12DG-2” or “953G 1A 12V sealed”5-pin, two-common-terminal footprint matches the PCB through-holesCoil 12VDC; contact form 1A (NO); load within ≤30A at 250VAC / ≤30VDC (resistive)Envelope and height fit the enclosure; pick-up voltage requirement ≤9VIn the box: 1 × 953-1A-12DG-2 relay

• Parameters & footprint — Sealed PCB power relay 953-1A-12DG-2 (953G series): coil 12VDC (≈0.9W), coil resistance 155 Ω, nominal coil current ≈77 mA, pick-up ≤9 V, drop-out ≥1.2 V; contact arrangement 1 Form A (SPST-NO) up to 30 A resistive at 250 VAC or 30 VDC (max switching 250 VAC/30 VDC); Ag-alloy contacts; electrical life 100k ops, mechanical life 10M ops; two common terminals / 5-pin layout for low contact resistance; body ~27.4 × 31.8 mm; RoHS. Compatible with HSINDA 953G sealed 5-pin footprints on control boards.
• Installation & location — PCB-mounted relay typically located on HVAC/appliance/industrial control boards (e.g., compressor, blower, heater, pump, charger outputs). To install: desolder the original relay, clean pads, insert this unit per silkscreen notch/orientation, solder all 5 pins, and inspect joints; observe coil polarity if the driver uses a diode or transistor; maintain creepage/clearance around high-voltage pins; typical board designators include “RL1/RLY1/953.” Compatible with control-board locations calling for a sealed 12 VDC 1 Form A 30 A relay of the HSINDA 953G footprint
• Compatibility checklist (use to confirm fit) — Compatible with boards that specify 953-1A-12DG-2 or “953G 1A 12V sealed” and that use the 5-pin two-common-terminal footprint shown in the 953G outline. Match the following before purchase: coil 12 VDC (≈77 mA), contact form 1A (normally open), load ≤30 A at 250 VAC or ≤30 VDC (resistive), outline ~27.4 × 31.8 mm, engage height/clearance, and pick-up ≤9 V. If your original part is 953-1C (SPDT) or 953-1A-12DG-1 (4-pin), it is not a drop-in; choose the identical contact arrangement and pin count for your board. Compatible with the HSINDA 953G sealed footprint only.
• Reliability & related items — Coil class options and sealed housing support harsh environments; operate time ≤15 ms, release ≤10 ms; dielectric strength test levels support robust isolation. For longevity on inductive loads, size margins conservatively and add suppression (e.g., flyback diode/TVS across coil or snubber across load if your board lacks it). Compatible with common control-board service materials (rosin flux, solder wick) and with maintenance practices such as conformal-coating rework where required. Operating range −40 °C to +85 °C; store dry and within temperature limits.