# Yuanze Y3F series relay: English translation

Translation of `Y3F-S-120D-datasheet-CN.pdf` (Yuanze Relay, "Y3F规格书", 3 pages).
That file has no text layer, so this was translated from the page images.
Where the original has an obvious error, the note says so; the figures are
otherwise as printed.

For the relay on the UD85C08 (Y3F-SS-112D), the English spec sheet
`Y3F-SS-112D-spec-sheet-EN-NextGen.pdf` (NextGen Components, sheet
N0423-Y3FSS112D00L01, rev. A0, April 23, 2021, original manufacturer YuanZe
Relay) is the better source; the differences are listed at the end.

---

## Page 1

**YUANZE RELAY (元则继电器) — Miniature power relay — Y3F series**

### Features
- Dimensions (L x W x H): 19.6 x 15.4 x 15.5 mm
- High contact capacity: 15 A switching capability
- Low coil power consumption, low price
- Very small; standard PCB pin layout

**Safety approvals:** CQC, UL, TUV

### Contact load

| Item | Value |
|---|---|
| Model | Y3F |
| Resistive load | 10 A 250 VAC, 15 A 125 VAC |
| Max. switching current | 15 A |
| Max. switching voltage | 250 VAC |
| Max. switching power | 2500 VA |

### Performance

| Item | Value |
|---|---|
| Contact material | Silver alloy |
| Contact resistance | 50 mΩ max. |
| Operate time | 8 ms max. |
| Release time | 5 ms max. |
| Insulation resistance | 100 MΩ min. (500 VDC) |
| Dielectric strength, between open contacts | 750 VAC, 50/60 Hz, 1 min |
| Dielectric strength, between contacts and coil | 1500 VAC, 50/60 Hz, 1 min (printed "AC1, 500V") |
| Vibration resistance, endurance | 10 to 50 Hz, 1.5 mm double amplitude |
| Vibration resistance, malfunction | 10 to 50 Hz, 1.5 mm double amplitude |
| Shock resistance, endurance | 10 G min. |
| Shock resistance, malfunction | 100 G min. |
| Mechanical life | 10,000,000 operations (at 10,800 operations/hour) |
| Electrical life | printed "10,000,00" operations (at 900 operations/hour); a typo, read as 100,000 |
| Ambient temperature | printed "+40 °C to +105 °C"; a typo, read as -40 °C to +105 °C |
| Weight | about 10.0 g |

Note: the shock figures look swapped (endurance is normally the higher one);
they are as printed.

### Coil data (at 20 °C)

| Nominal voltage (VDC) | Nominal current ±10 % (mA) | Coil resistance ±10 % (Ω) |
|---|---|---|
| 3 | 120.00 | 25 |
| 5 | 71.42 | 70 |
| 6 | 60.00 | 100 |
| 9 | 40.00 | 225 |
| 12 | 30.00 | 400 |
| 15 | 24.00 | 625 |
| 18 | 20.00 | 900 |
| 24 | 15.00 | 1,600 |
| 48 | 7.50 | 6,400 |
| 60 | 6.00 | 10,000 |

For all coil voltages:
- Max. continuous applied voltage: 130 % of nominal voltage
- Pick-up (operate) voltage: 75 % of nominal voltage, max.
- Drop-out (release) voltage: 5 % of nominal voltage, min.
- Nominal power: about 0.36 W

## Page 2

### Safety approval ratings

| Approval | Ratings |
|---|---|
| CQC | NO: 15 A 125 VAC; 10 A 250 VAC; 28 VDC |
| TUV | 10 A 250 VAC; 10 A 30 VDC |
| UL | NO: 15 A 125 VAC; TV-5 120 VAC; 10 A 250 VAC |

### Part numbering: Y3F-SS-112DM

| Field | Meaning |
|---|---|
| 1. Y3F | Basic model |
| 2. SS | Enclosure: SS = plastic sealed, SH = flux-proof (printed "防水式", waterproof type) |
| 3. 1 | Number of contact sets: 1 |
| 4. 12 | Coil voltage (VDC): 03, 05, 06, 09, 12, 15, 18, 24, 48, 60 |
| 5. D | Coil power: D = 0.36 W |
| 6. M | Contact form: none = Form C, B = Form B, M = Form A |

So the UD85C08's **Y3F-SS-112D** is: plastic sealed, 1 contact set, 12 VDC
coil, 0.36 W, Form C (changeover).

### Outline dimensions, wiring and mounting holes (unit: mm)

Drawings: body 19.6 x 15.4 x 15.5 mm, pins 3.5 mm long. Wiring diagrams
(bottom view) for Form C, Form B and Form A; PCB hole layouts (bottom view)
"1c", "1b", "1a": holes on a 12.2 x 12 mm pattern (6 + 6), 3 x Ø1.3 and
2 x Ø1 for 1c.

Tolerances where not marked: < 1 mm: ±0.2 mm; 1 to 5 mm: ±0.3 mm;
> 5 mm: ±0.4 mm.
Notes: 1. Pin dimensions are before tin plating. 2. Mounting hole
tolerance: ±0.1 mm.

## Page 3

### Typical applications
- Household appliances: air conditioners, electric heaters, etc.
- Office equipment: computers, fax machines, etc.
- Vending machines
- Automatic electric windows, car antennas, door locks, etc.

### Characteristic curves
1. **Maximum switching power:** contact current (A) against contact
   voltage (V), log-log, with curves for AC (1a), AC (1c) and DC.
2. **Life curve:** operations (x 10,000) against contact current (A), for
   1a and 1c, at 28 VDC and 250 VAC resistive.
3. **Coil temperature rise:** temperature rise (K) against coil voltage as
   a percentage of nominal (80 to 130 %), for contact currents of 0, 7 and
   10 A.

---

## Compared with the English Y3F-SS-112D spec sheet

| | Chinese Y3F sheet | English Y3F-SS-112D sheet |
|---|---|---|
| Operate time | 8 ms max. | 10 ms max. |
| Release time | 5 ms max. | 5 ms max. |
| Contact resistance | 50 mΩ max. | 100 mΩ max. (at 6 VDC, 1 A) |
| Contact rating | 10 A 250 VAC, 15 A 125 VAC | NO/NC 10 A 250 VAC; 7 A / 3 A 250 VAC |
| Pick-up voltage | 75 % (9.0 V) max. | 9.0 V max. |
| Drop-out voltage | 5 % (0.6 V) min. | 0.6 V min. |
| Mechanical life | 10,000,000 at 10,800/h | 10,000,000 at 18,000/h |
| Electrical life | 100,000 (printed "10,000,00") at 900/h | 100,000 at 10 A 250 VAC, 600/h |
| Ambient temperature | -40 to +105 °C (printed +40) | -40 to +105 °C |

The firmware uses the English sheet's operate time (10 ms) and release time
(5 ms), with 5 ms added for contact bounce, which neither sheet specifies.