# MPY/Y2 Series Metallized Polypropylene Film Interference Suppression Capacitors (Class Y2)

> Boxed metallized polypropylene film capacitors for line-to-earth EMI suppression, Class Y2. Rated 250–350 VAC, 1 nF–1.2 µF.

- Series code: MPY/Y2
- Product line: [Film capacitors](https://www.songtian-ste.com/en/products/film-capacitors/) › EMI suppression capacitors (X1/X2/Y2)
- Approvals: UL, VDE, ENEC, CQC
- Part numbers: 113 · [part list (JSON)](https://www.songtian-ste.com/data/parts/mpy-y2.json)
- Page: https://www.songtian-ste.com/en/products/film-capacitors/mpy-y2/
- Chinese version: https://www.songtian-ste.com/zh/products/film-capacitors/mpy-y2/
- [Ask AI about this series](https://www.songtian-ste.com/en/products/film-capacitors/mpy-y2/?ask=Help%20me%20choose%20a%20part%20from%20the%20STE%20MPY%2FY2%20series.)

## Key specifications

| Parameter | Value |
| --- | --- |
| Safety class | Y2, line-to-earth |
| Rated voltage | 250 / 275 / 300 / 350 VAC |
| Capacitance | 0.001–1.2 µF |
| Tolerance | ±10% / ±20% |
| Lead pitch | 7.5–37.5 mm |
| Operating temperature | −40 °C to +110 °C |

## Engineering details

### Overview

Boxed metallized polypropylene film capacitors for line-to-earth (L/N–PE) EMI suppression, Class Y2 to IEC / EN / UL 60384-14, for basic or supplementary insulation. Rated 250, 275, 300 and 350 VAC; 1 nF–1.2 µF; tolerance ±10% or ±20%. DC rating 1,500 VDC at 85 °C and 1,000 VDC at 105 °C, not covered by the safety approvals. Operating temperature −40 °C to +110 °C. Flame-retardant construction to UL 94 V-0.

#### Series features

- Class Y2 to IEC / EN / UL 60384-14 for line-to-earth and line-bypass interference suppression
- Four certified AC ratings: 250, 275, 300 and 350 VAC; capacitance 1 nF–1.2 µF
- DC rating 1,500 VDC at 85 °C and 1,000 VDC at 105 °C, not covered by the safety approvals
- Boxed, resin-encapsulated metallized polypropylene construction; flame-retardant to UL 94 V-0

#### Typical applications

- Common-mode EMI filtering from line to protective earth
- Basic or supplementary insulation positions where Class Y2 is permitted
- Power-supply bypass and antenna-coupling interference suppression
- Industrial, appliance, lighting and renewable-energy filters; verify leakage current and mission profile first

### Specifications

|   |   |
| --- | --- |
| Safety function | Class Y2 · line-to-earth / line-bypass EMI suppression · basic or supplementary insulation; not for reinforced-insulation (Y1) positions |
| Construction | Metallized polypropylene film · boxed, resin-encapsulated |
| Reference standards | IEC / EN / UL 60384-14 · approvals to IEC 60384-14:2013 + AMD1:2016 |
| Rated AC voltage UR | 250 · 275 · 300 · 350 VAC |
| Capacitance range | 0.001–1.2 µF · available values depend on rated voltage, body size, tolerance and approval scope |
| Capacitance tolerance | ±10% (K) · ±20% (M, on request) |
| Leakage current | Calculate the mains-frequency current from capacitance including tolerance, voltage and frequency; check it against the equipment leakage limit |
| Operating temperature | −40 °C to +110 °C |
| Climatic category / flammability | 40/110/56 · passive flammability category B |
| DC voltage rating (STE-specified) | 1,500 VDC at 85 °C · 1,000 VDC at 105 °C · derating and lifetime data on request |
| DC approval | VDE certificate 40056386 includes no Annex H (DC) approval; the DC rating is not a certified safety-capacitor DC approval |
| Dissipation factor | tan δ ≤0.15% |
| Insulation resistance, CR ≤0.33 µF | ≥15,000 MΩ at 20 °C, 100 VDC, 60 s |
| Insulation resistance, CR >0.33 µF | Time constant ≥5,000 s (T = IR \[MΩ\] × CN \[µF\]) at 20 °C, 100 VDC, 60 s |
| Voltage proof, terminal to terminal | 1,500 VAC, 1 s, or 3,500 VDC, 5 s |
| Voltage proof, terminals to case | 2 × UR + 1,500 VAC, min. 2,000 VAC |
| Impulse test voltage | On request, including the test circuit |
| Impulse sequence | 24 pulses · 9 s charge / 2 s discharge cycle |
| Self-ignition test | U = UR · U1 = 5.0 kV · 20 discharges of the energy-storage capacitor per sample · 5 s interval |
| Humidity robustness | No biased 85/85 humidity test; the VDE approval includes no IEC 60384-14 Annex I humidity grade. For humid environments, see MPY/Y2-THB. |
| Body dimensions | W 10–41.5 · H 11–41 · T 5–27.5 mm, depending on rated voltage and capacitance |
| Lead pitch | 7.5 · 10 · 15 · 22.5 · 27.5 · 37.5 mm |
| Pitch codes | N 10 · Q 15 · T 22.5 · V 27.5 mm · codes for 7.5 and 37.5 mm on request |
| Lead diameter | 0.6 mm (pitch 7.5–10 mm) · 0.8 mm (15–27.5 mm) · 1.0 mm (37.5 mm) |
| Lead and packing forms | Long straight · inner-bent · straight, taped · bent, taped |
| Taped lead spacing F | 7.5 / 10 / 15 / 20–22.5 mm; F = 5 mm is not offered in this series |
| Soldering profile, PP | Preheat ≤110 °C · soldering ≤120 °C · ≤15 s |
| Soldering profile, PE | Preheat ≤125 °C · soldering ≤160 °C · ≤15 s |
| Soldering profile selection | PP or PE, depending on the part number; on request |
| Hand soldering / rework | Iron ≤350 °C · ≤3 s · ≥2 mm from the coating |
| Reflow soldering | Not permitted; film shrinkage can degrade performance |
| Storage | In unopened package: ≤35 °C, ≤70% RH, ≤12 months. Keep away from corrosive gases to preserve lead solderability. |
| Environmental compliance | RoHS and REACH compliant · code E = RoHS, F = RoHS + halogen-free |
| Further data | On request: tan δ measurement conditions · voltage-proof test duration, terminals to case · leakage and failure-current behavior · dry-heat life · dV/dt · current · ESR · thermal · humidity · vibration · lead strength |

### Variants

Ranges by dielectric, package and lead style within this series.

| Variant | Body dimensions | Rated voltage / capacitance | Construction / class | Lead / land pattern | Notes |
| --- | --- | --- | --- | --- | --- |
| 7.5 mm | W 10 · H 11–15 · T 5–8 mm | 250–350 VAC · 0.001–0.0039 µF | Metallized PP · Y2 · K/M | P 7.5 ±1.0 · d 0.6 ±0.05 mm | Smallest body. |
| N · 10 mm | W 13 · H 11–15 · T 5–8 mm | 250–350 VAC · 0.001–0.01 µF | Metallized PP · Y2 · K/M | P 10 ±1.0 · d 0.6 ±0.05 mm | — |
| Q · 15 mm | W 18 · H 13.5–21 · T 7.5–12 mm | 250–350 VAC · 0.01–0.047 µF | Metallized PP · Y2 · K/M | P 15 ±1.0 · d 0.8 ±0.05 mm | — |
| T · 22.5 mm | W 26 · H 19–23 · T 10–13 mm | 250–350 VAC · 0.047–0.1 µF | Metallized PP · Y2 · K/M | P 22–22.5 ±1.0 · d 0.8 ±0.05 mm | Pitch 22 or 22.5 mm; see part drawing. |
| V · 27.5 mm | W 31.5 · H 22–30.5 · T 13–22 mm | 250–350 VAC · 0.1–0.33 µF | Metallized PP · Y2 · K/M | P 27.5 ±1.0 · d 0.8 ±0.05 mm | Leakage current rises with capacitance; check it against the equipment limit. |
| 37.5 mm | W 41.5 · H 30–41 · T 17–27.5 mm | 250–350 VAC · 0.39–1.2 µF | Metallized PP · Y2 · K/M | P 37.5 ±1.0 · d 1.0 ±0.05 mm | At high capacitance values, check leakage current against the equipment limit. |

### Selection guide

Start with the insulation position: Class Y2 is a line-bypass class for basic or supplementary insulation where the equipment standard permits it. It does not replace Y1 in reinforced-insulation positions. Then define leakage current, certified AC voltage, capacitance and body size, impulse stress, humidity profile and assembly.

1. **Confirm that Y2 is permitted**
   Use Y2 from line to protective earth or in a bypass position only when the insulation architecture and equipment standard permit basic or supplementary insulation. Use Y1 where reinforced insulation or the higher impulse class is required.
2. **Calculate leakage current first**
   Use the capacitance including tolerance, the mains voltage and frequency to calculate line-frequency current. Include all Y capacitors and other leakage paths in the equipment limit.
3. **Match the AC voltage approval**
   Select 250, 275, 300 or 350 VAC and the approval marks the end equipment needs.
4. **Separate the DC rating from the safety approval**
   The series is rated 1,500 VDC at 85 °C and 1,000 VDC at 105 °C, but the VDE approval includes no Annex H DC approval. For DC applications, derating and lifetime data are available on request; the end-equipment safety basis must be established separately.
5. **Specify geometry, impulse data and assembly process**
   Specify W/H/T, pitch, lead diameter and form and packing for each capacitance and voltage. Check the impulse test data, pitch code and soldering profile of the selected part, check PCB spacing and do not reflow-solder.

### Approvals & reliability

#### Approvals & qualifications

CQC, VDE/ENEC, IECEE CB and UL/cUL approvals cover MPY Y2 capacitors from 1 nF to 1.2 µF at 250–350 VAC. The approvals include neither DC use (Annex H) nor an Annex I humidity grade.

| Agency | Standard | Certificate | Scope |
| --- | --- | --- | --- |
| CQC CQC | IEC 60384-14:2013 + AMD1:2016 | CQC23001379254 | MPY Y2, 0.001–1.2 µF, 250/275/300/350 VAC, ±10% (K) or ±20% (M). Issued 10 Mar 2023. |
| VDE, ENEC VDE / ENEC | EN 60384-14:2013 + A1:2016 | 40056386 | MPY Y2, 0.001–1.2 µF, 250/275/300/350 VAC, K/M, climatic category 40/110/56, passive flammability category B. No Annex H (DC) approval; no Annex I humidity grade. |
| IECEE CB IECEE CB | IEC 60384-14:2013 + AMD1:2016 | DE1-67208 | MPY Y2, 1 nF–1.2 µF, K/M, 250/275/300/350 VAC, 40/110/56/B. Test report 300758-TL3-1. |
| UL UL / cUL | UL 60384-14 | E208107 | MPY Y2, 0.001–1.2 µF, 250/275/300/350 VAC, −40 to +110 °C, tolerance K/M. |

Each certificate covers the types and ratings listed on it.

#### Reliability tests

Initial characteristics cover dissipation factor, insulation resistance and voltage proof. Impulse and self-ignition test sequences are specified.

| Test | Condition | Acceptance |
| --- | --- | --- |
| Impulse test | 24 pulses · 9 s charge / 2 s discharge | Test voltage, circuit and post-test limits on request |
| Self-ignition test | U = UR · U1 = 5.0 kV · 20 discharges per sample · 5 s interval | Test energy and pass criteria on request |

### Design notes

#### Y2 does not provide reinforced insulation

Use Y2 for line-to-earth EMI suppression where basic or supplementary insulation is allowed. Reinforced primary-to-secondary barriers and higher impulse requirements need a Y1 capacitor with the corresponding approval.

#### Leakage current sets the usable capacitance

Higher Y capacitance improves common-mode attenuation but raises mains-frequency current. Sum every Y capacitor and leakage path at maximum voltage, frequency and tolerance, and check the total against the equipment limit.

#### DC ratings are not safety approvals

The DC ratings (1,500 VDC at 85 °C, 1,000 VDC at 105 °C) are STE application limits; the VDE approval includes no Annex H DC approval. Check waveform, ripple, temperature rise, derating, life and end-equipment insulation requirements for the selected part.

#### No THB rating

This series has no biased 85/85 humidity rating, and its VDE approval includes no humidity grade. For humid environments, select MPY/Y2-THB and design to its own ratings.

#### Spacing, assembly and failure path

Define PCB creepage and clearance and the lead form. Validate soldering, cleaning and coating; do not reflow-solder. Coordinate protective earthing, fusing and open- and short-circuit failure analysis.

### Part numbering

Example ordering code. Not every combination is available.

`Y2 · Q1 · 103 · K · Q · 1 · B0 · 180 · 120 · 060 · E · V · 0`

| Code | Meaning |
| --- | --- |
| Y2 | Safety class Y2 and series |
| Q1 | Rated voltage: Q1 = 300 VAC; E2 = 250, P2 = 275, R2 = 350 VAC |
| 103 | Capacitance code: 103 = 10 nF |
| K | Capacitance tolerance: K = ±10%; M = ±20% |
| Q | Lead pitch: Q = 15 mm; N = 10, T = 22.5, V = 27.5 mm; codes for 7.5 and 37.5 mm on request |
| 1 | Lead form: 1 = long straight; 2 = inner-bent, 5 = straight taped, 6 = bent taped |
| B0 | Lead length: B0 = 20.0 mm |
| 180 | Body width: 180 = 18.0 mm |
| 120 | Body height: 120 = 12.0 mm |
| 060 | Body thickness: 060 = 6.0 mm |
| E | Environmental: E = RoHS; F = RoHS + halogen-free |
| V | Case color: V = blue; E = gray |
| 0 | STE internal management code |

## Datasheets & approval documents

- [Datasheet: MPY/Y2 series box-type metallized polypropylene (PP) film EMI suppression capacitors, Class Y2 — short-form datasheet (2022-04)](https://www.songtian-ste.com/documents/source-cn/%E9%87%91%E5%B1%9E%E8%86%9C%E7%94%B5%E5%AE%B9%E5%99%A8%E7%B3%BB%E5%88%97%E4%BA%A7%E5%93%81%E8%A7%84%E6%A0%BC%E4%B9%A6/%E6%8A%97%E5%B9%B2%E6%89%B0%E5%AE%89%E8%A7%84%E7%94%B5%E5%AE%B9%E5%99%A8/%E7%9B%92%E5%BC%8F%E9%87%91%E5%B1%9E%E5%8C%96%E8%81%9A%E4%B8%99%E7%83%AF%E8%86%9C%E6%8A%97%E5%B9%B2%E6%89%B0%E7%94%B5%E5%AE%B9%E5%99%A8%EF%BC%88MPY%20Y2%EF%BC%89%E7%AE%80%E7%89%88%E8%A7%84%E6%A0%BC%E4%B9%A6-20220412.pdf) — PDF · Chinese · 2022-04 · 335 KB
- [Certificate: MPY series Class Y2 film capacitor safety approval certificates (2023-03)](https://www.songtian-ste.com/documents/source-cn/%E5%AE%89%E8%A7%84%E8%AE%A4%E8%AF%81%E8%AF%81%E4%B9%A6/3-Y2%E8%96%84%E8%86%9C%E7%94%B5%E5%AE%B9%E5%99%A8%EF%BC%88MPY%EF%BC%89%E5%AE%89%E8%A7%84%E8%AE%A4%E8%AF%81%E8%AF%81%E4%B9%A6-2023%E5%B9%B43%E6%9C%88%E7%89%88%E6%9C%AC.pdf) — PDF · Chinese · 2023-03 · 1.4 MB

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