Specifications
| Type | Description |
|---|---|
| Part Number | XL815S-G |
| Manufacturer | XINGLIGHT |
| Product Type | SMD LED |
| Category | LED |
| Package Case | SMD4 |
| Current Transfer Ratio (IF=1 mA, VCE=2 V) | 600-7500 % |
| Isolation Voltage (Input to output) | 5000 Vrms |
| Operating Temperature (Operating range) | -55 to +110 °C |
| Package Type (Part number XL815S) | SMD4 |
| Shipping Quantity (XL815S SMD4 package) | 2000 pcs/Tape & Reel |
| Marking Code (XL815S SMD4 package) | XL815 |
| Forward Current (Maximum rating, Ta=25°C unless otherwise specified) | 60 mA |
| Reverse Voltage (Maximum rating, Ta=25°C unless otherwise specified) | 6 V |
| Peak Forward Current (Pulse width ≤1 μs, duty ratio 0.001) | 1 A |
| Input Power Dissipation (Maximum rating, Ta=25°C unless otherwise specified) | 100 mW |
| Input Power Dissipation Derating Factor (Above Ta=100°C) | 5.8 mW/°C |
| Input Thermal Resistance Junction-Ambient (Maximum rating) | 325 °C/W |
| Input Thermal Resistance Junction-Case (Maximum rating) | 200 °C/W |
| Collector Power Dissipation (Maximum rating, Ta=25°C unless otherwise specified) | 150 mW |
| Collector Current (Maximum rating, Ta=25°C unless otherwise specified) | 80 mA |
| Collector-Emitter Voltage (Maximum rating, VCEO) | 40 V |
| Emitter-Collector Voltage (Maximum rating, VECO) | 7 V |
| Total Power Dissipation (Maximum rating) | 200 mW |
| Isolation Voltage (40 to 60% RH, AC for 1 minute) | 5000 Vrms |
| Storage Temperature Range (Maximum rating) | -55 to +125 °C |
| Soldering Temperature (For 10 seconds) | 260 °C |
| Forward Voltage (IF=20 mA, Ta=25°C) | Typ 1.2 V, Max 1.4 V |
| Input Reverse Current (VR=4 V) | Max 10 μA |
| Terminal Capacitance (VR=0 V, f=1 kHz) | Typ 30 pF, Max 250 pF |
| Collector-Emitter Dark Current (VCE=10 V) | Max 1000 nA |
| Collector-Emitter Breakdown Voltage (IC=0.1 mA, IF=0) | Min 40 V |
| Emitter-Collector Breakdown Voltage (IE=10 μA, IF=0) | Min 7 V |
| Collector-Emitter Saturation Voltage (IF=20 mA, IC=5 mA) | Typ 0.8 V, Max 1 V |
| Isolation Resistance (VIO=500 Vdc, 40-60% R.H.) | Min 5×10^10 Ω |
| Isolation Capacitance (VIO=0, f=1 MHz) | Typ 0.6 pF, Max 1.0 pF |
| Cut-off Frequency (VCE=5 V, IC=2 mA, RL=100 Ω, -3 dB) | Typ 6 kHz |
| Turn-on Time (VCE=2 V, RL=100 Ω) | Typ 60 μs, Max 300 μs |
| Turn-off Time (IC=10 mA) | Typ 53 μs, Max 250 μs |
| Reflow Preheat Temperature (Reflow soldering profile, Ts) | 150-200 °C |
| Reflow Preheat Time (Reflow soldering profile, ts) | 60-120 s |
| Reflow Ramp-up Rate (TL to Tp) | 3 °C/s |
| Reflow Liquidus Temperature (Reflow soldering profile, TL) | 217 °C |
| Reflow Time Above Liquidus (Time above TL) | 60-150 s |
| Reflow Peak Temperature (Reflow soldering profile, Tp) | 260 °C |
| Reflow Peak Dwell Time (Time during which Tc is between Tp-5 and Tp) | 30 s |
| Reflow Ramp-down Rate (Tp to TL) | 6 °C/s |
| Reflow Cycle Limit (Recommended reflow soldering) | No more than three times |
| Wave Soldering Peak Temperature (Wave soldering profile, Tp) | 260 °C |
| Hand Soldering Temperature (Within 3 s, product rework or sample testing) | 360 °C +5 °C |
| Datasheet Status | request_only |
Product Overview
The XL815S-G is a XINGLIGHT photo Darlington optocoupler in the LED category. It combines an input LED with a Darlington photo output stage, with electrical isolation specified at 5000 Vrms input to output. The current transfer ratio is specified as 600-7500% at IF=1 mA and VCE=2 V, supporting applications that need optical coupling with high transfer gain.
The device is supplied in an SMD4 package with XL815 marking. Maximum ratings include 60 mA forward current, 6 V reverse voltage, 1 A peak forward current for pulse width ≤1 μs at 0.001 duty ratio, 80 mA collector current, 40 V VCEO, 7 V VECO, and 200 mW total power dissipation.
Electrical characteristics include 1.2 V typical and 1.4 V maximum forward voltage at IF=20 mA, 1000 nA maximum collector-emitter dark current at VCE=10 V, 0.8 V typical and 1 V maximum saturation voltage at IF=20 mA and IC=5 mA, and 6 kHz typical cut-off frequency. Assembly limits include 260 °C reflow peak temperature and no more than three reflow cycles.
Key Features
- Photo Darlington optocoupler in SMD4 surface-mount package
- 600-7500% current transfer ratio at IF=1 mA
- 5000 Vrms input-to-output isolation voltage rating
- -55 to +110 °C operating temperature range
- 40 V collector-emitter voltage maximum rating
- 80 mA collector current maximum rating
- 1.2 V typical forward voltage at IF=20 mA
- 6 kHz typical cut-off frequency at specified load
- 260 °C peak reflow soldering profile
- 2000 pcs per tape and reel shipping quantity
Typical Applications
- Isolated signal coupling
- PLC input interfaces
- Industrial control circuits
- Low-frequency switching interfaces
- Microcontroller input isolation
- Surface-mount optocoupler assemblies
Procurement Notes
When requesting a quote for XL815S-G, 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 package is used for the XL815S-G?
The extracted datasheet facts identify the XL815S series package type as SMD4. The SMD4 package version uses the XL815 marking code and is listed with a shipping quantity of 2000 pcs per tape and reel.
What isolation rating does the XL815S-G provide?
The XL815S-G has a specified isolation voltage of 5000 Vrms input to output. The maximum rating table also lists 5000 Vrms under 40 to 60% relative humidity with AC applied for 1 minute.
What current transfer ratio is specified for this optocoupler?
The current transfer ratio is specified as 600-7500% under the stated test condition of IF=1 mA and VCE=2 V. This value applies to the photo Darlington optocoupler characteristics in the extracted datasheet facts.
What soldering limits are listed for XL815S-G assembly?
The extracted facts list a 260 °C soldering temperature for 10 seconds, a 260 °C reflow peak temperature, and no more than three recommended reflow cycles. Hand soldering is listed as 360 °C +5 °C within 3 seconds.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 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.