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Home > Products > Integrated Circuits (ICs) > Specialized ICs > SP-45ML
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SP-45ML

Manufacturer Part Number:
SP-45ML
Manufacturer / Brand
KODENSHI
Part of Description:
621
Datasheets:
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 15043 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number SP-45ML
Manufacturer / Brand KODENSHI
Stock Quantity 15043 pcs Stock
Category Integrated Circuits (ICs) > Specialized ICs
Description 621
Lead Free Status / RoHS Status: RoHS Compliant
Condition New Original Stock
Warranty 100% Perfect Functions
Lead Time 2-3days after payment.
Payment Credit Card / PayPal / Telegraphic Transfer (T/T) / Western Union
Shipping by DHL / Fedex / UPS / TNT
Port HongKong
RFQ Email Info@IC-Components.com

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

What are the critical power supply considerations when integrating the SP-45ML optocoupler into an industrial control system with a 24V DC input?
The SP-45ML operates within a supply voltage range of 4.0V to 30V, making it suitable for direct integration with 24V systems without additional regulation. However, designers must ensure transient protection (e.g., TVS diodes) is implemented due to potential voltage spikes in industrial environments. Input-side current draw should be verified under worst-case LED drive conditions to avoid exceeding the optocoupler’s forward current rating.
Can the SP-45ML safely interface between a 3.3V microcontroller GPIO and a 5V relay coil driver circuit?
Yes, the SP-45ML supports mixed-voltage operation across its full 4.0V–30V input and output ranges. On the input side, a series current-limiting resistor can adapt the 3.3V logic level to the appropriate forward current (typically 5–15 mA). On the output side, the collector-emitter saturation voltage ensures compatibility with 5V loads. Isolation prevents ground loops and protects low-voltage logic from high-side transients.
How does thermal performance affect long-term reliability of the SP-45ML in enclosed enclosures with limited airflow?
As a DIP-2 package with minimal surface area, the SP-45ML dissipates heat primarily through conduction to the PCB. In confined spaces, elevated ambient temperatures may reduce LED luminous intensity over time due to increased junction temperature. Designers should maintain clearances, avoid placing near heat sources, and validate performance under expected operating temperature profiles (–40°C to +85°C).
What configuration changes are required when replacing the SP-45ML with an equivalent part like the HCPL-817 from Broadcom?
While functionally similar, the HCPL-817 has a higher CTR (minimum 50% vs. SP-45ML’s typical 20%) and different pinout (DIP-4). To replace SP-45ML, add external base resistors if needed, account for higher CTR in timing applications, and verify isolation voltage compliance. The SP-45ML’s simpler two-pin structure offers space savings but lower CTR may necessitate design adjustments in low-power scenarios.
Is the SP-45ML suitable for use in medical equipment requiring reinforced insulation per IEC 60601-1?
No, the SP-45ML provides basic insulation only and does not meet the creepage, clearance, or dielectric strength requirements for reinforced isolation in medical devices. It lacks certifications such as UL 1577 or CSA Component Acceptance Service. For medical-grade isolation, use components specifically qualified under IEC 60601-1 with reinforced ratings.
What clocking limitations exist when using the SP-45ML for digital signal transmission in high-speed data acquisition systems?
The SP-45ML has a maximum data rate of 1 Mbps, which limits its suitability for fast serial protocols like SPI above 1 MHz or I²C at standard speeds. Its propagation delay skew and rise/fall time asymmetry introduce jitter unsuitable for precise timing-critical applications. Use only for slow control signals, status reporting, or low-bandwidth analog isolation where speed is not critical.
How should layout and routing be handled to maintain isolation integrity when mounting the SP-45ML on a dual-layer PCB?
Maintain strict creepage distance of at least 0.5 mm between primary and secondary sides according to IEC 60950-1. Route traces perpendicular to the isolation barrier, avoid parallel runs that could couple noise, and place no vias or copper on either side of the isolation gap. Keep input and output traces physically separated by at least one board edge or guard trace filled with grounded copper.
Can the SP-45ML be used in automotive applications subject to ISO 16750-3 vibration testing?
While the SP-45ML itself is not AEC-Q100 qualified, its construction—epoxy-molded DIP package with internal wire bonds—is inherently robust against moderate mechanical stress. However, without automotive qualification, long-term reliability under sustained vibration, thermal cycling, or humidity exposure cannot be guaranteed. Use only in non-safety-critical auxiliary circuits where failure poses minimal risk.
What happens if the LED input current exceeds the recommended 10 mA peak in continuous operation?
Exceeding the 10 mA forward current degrades LED efficiency and accelerates degradation, leading to reduced CTR over time and potential optical output decay. Although the device may still function temporarily, lifespan is significantly shortened. Always operate below 10 mA; use pulse-width modulation for higher average signaling if needed.
Are there any known compatibility issues when cascading multiple SP-45ML units in a multi-channel isolation chain?
Each SP-45ML has independent input and output channels, so cascading is electrically possible. However, cumulative propagation delays and variations in CTR across units can distort timing-sensitive signals. Ensure total channel-to-channel skew remains within acceptable limits for your application. Avoid daisy-chaining power unless isolated supplies are used per channel to prevent ground loop formation.

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SP-45ML

KODENSHI

621

In Stock: 15043

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