Specifications
| Type | Description |
|---|---|
| Part Number | XL357（X）-E |
| Manufacturer | XINGLIGHT |
| Product Type | SMD LED |
| Category | LED |
| Package / Case | SOP4; package outline dimensions referenced in mm, numeric body dimensions not provided in extracted text |
| Current Transfer Ratio | 50-600 % |
| Isolation Voltage | 3750 Vrms |
| Collector-Emitter Breakdown Voltage | >=80 V |
| Operating Temperature | -55 to +110 °C |
| Storage Temperature Range | -55 to +125 °C |
| Forward Current | 50 mA |
| Peak Forward Current | 1 A |
| Reverse Voltage | 6 V |
| Input Power Dissipation | 70 mW |
| Collector Power Dissipation | 150 mW |
| Collector Current Maximum Rating | 50 mA |
| Collector-Emitter Voltage | 80 V |
| Emitter-Collector Voltage | 7 V |
| Total Power Dissipation | 200 mW |
| Rated Impulse Isolation Voltage | 5000 V |
| Rated Repetitive Peak Isolation Voltage | 600 V |
| Thermal Resistance Junction-to-Air | 430 °C/W |
| Thermal Resistance Junction-to-Case | 350 °C/W |
| Thermal Resistance Junction-to-Lead | 368 °C/W |
| Soldering Temperature | 260 °C |
| Forward Voltage | typ 1.2 V, max 1.4 V |
| Peak Forward Voltage | max 3.0 V |
| Reverse Current | max 10 uA |
| Input Capacitance | typ 30 pF, max 250 pF |
| Collector-Emitter Dark Current | max 100 nA |
| Emitter-Collector Breakdown Voltage | min 7 V |
| Collector Current Electrical | min 2.5 mA, max 30 mA |
| Collector-Emitter Saturation Voltage | typ 0.1 V, max 0.2 V |
| Isolation Resistance | min 1×10^12 ohm |
| Isolation Current | max 2 uA |
| Floating Capacitance | typ 0.6 pF, max 1.0 pF |
| Cut-off Frequency | typ 80 kHz |
| Turn-On Time | typ 4 us, max 18 us |
| Turn-Off Time | typ 3 us, max 18 us |
| CTR Rank A | 80-160 % |
| CTR Rank B | 130-260 % |
| CTR Rank C | 200-400 % |
| CTR Rank D | 300-600 % |
| CTR No Mark | 80-600 % |
| Reflow Preheat Temperature | 150-200 °C |
| Reflow Preheat Time | 60-120 s |
| Reflow Ramp-Up Rate | 3 °C/s |
| Reflow Liquidus Temperature | 217 °C |
| Reflow Time Above Liquidus | 60-150 s |
| Reflow Peak Temperature | 260 °C |
| Tape and Reel Quantity | 3000 pcs/reel |
| Datasheet Status | request_only |
Product Overview
The XL357（X）-E is a XINGLIGHT phototransistor optocoupler classified under the LED category. It uses an SOP4 package, with package outline dimensions referenced in millimeters in the manufacturer technical datasheet, while numeric body dimensions were not provided in the extracted text.
Electrical transfer is specified by a 50-600% current transfer ratio at IF=5 mA and VCE=5 V. Rank options include A at 80-160%, B at 130-260%, C at 200-400%, D at 300-600%, and no mark at 80-600%. Output-side limits include 80 V collector-emitter voltage, 50 mA collector current, and 7 V emitter-collector voltage.
Isolation and thermal parameters include 3750 Vrms isolation voltage for 1 minute, minimum 1×10^12 ohm isolation resistance, and typical 0.6 pF floating capacitance. The device operates from -55 to +110 °C, supports 260 °C soldering for 10 seconds, and has a reflow peak temperature of 260 °C with no more than three reflow cycles recommended.
Key Features
- 50-600% CTR at IF=5 mA and VCE=5 V
- 3750 Vrms isolation voltage for one minute
- SOP4 phototransistor optocoupler package
- 80 V collector-emitter output voltage rating
- -55 to +110 °C operating temperature range
- Typical 80 kHz cut-off frequency
- Typical 4 us turn-on time
- Typical 3 us turn-off time
- 260 °C reflow peak temperature
- 3000 pcs per reel SOP4 packing
Typical Applications
- Isolated signal transfer
- Transistor-output interface circuits
- SOP4 surface-mount assemblies
- Low-frequency isolation channels
- CTR-selected optocoupler designs
- High-isolation control inputs
- Reflow-assembled LED optocoupler boards
Procurement Notes
When requesting a quote for XL357（X）-E, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For LED and optoelectronic sourcing, brightness bin, wavelength or color temperature bin, forward voltage range, viewing angle, moisture sensitivity level and soldering process limits may affect final selection, availability and lead time.
FAQ
What type of device is XL357（X）-E?
XL357（X）-E is a XINGLIGHT phototransistor optocoupler in the LED category. The extracted package information identifies an SOP4 case, with package outline dimensions referenced in millimeters.
What current transfer ratio does XL357（X）-E specify?
The device specifies a 50-600% current transfer ratio at IF=5 mA and VCE=5 V. CTR rank options include A, B, C, D, and no-mark ranges under the same IF and VCE condition.
What isolation rating is listed for XL357（X）-E?
The extracted datasheet facts list 3750 Vrms isolation voltage under 40-60% RH with AC applied for 1 minute. Isolation resistance is specified as minimum 1×10^12 ohm at VIO=500 Vdc.
What assembly temperature limits are provided?
Soldering temperature is specified as 260 °C for 10 seconds. The reflow profile lists 150-200 °C preheat, 217 °C liquidus temperature, 260 °C peak temperature, and no more than three reflow cycles recommended.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 1, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.