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TSOP95438TT
Vishay Semiconductor Opto Division
IR RECEIVER - HEIMDALL PACKAGE -
2681 Pcs New Original In Stock
Remote Receiver Sensor 38.0kHz 25m Surface Mount
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5.0 / 5.0
- (88 Ratings)
TSOP95438TT
Product Overview
3809797
DiGi Electronics Part Number
TSOP95438TT-DGManufacturer
Vishay Semiconductor Opto Division
TSOP95438TT
Description
IR RECEIVER - HEIMDALL PACKAGE -Inventory
2681 Pcs New Original In Stock
Remote Receiver Sensor 38.0kHz 25m Surface Mount
Quantity
Minimum 1
Minimum 1
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Warranty & Returns
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TSOP95438TT Technical Specifications
Category
Optical Sensors, Photo Detectors - Remote Receiver
Packaging
Tape & Reel (TR)
Series
TSOP954
Product Status
Active
Sensing Distance
25m
B.P.F. Center Frequency
38.0kHz
Voltage - Supply
2 V ~ 3.6 V
Current - Supply
370 µA
Orientation
Top View
Mounting Type
Surface Mount
Operating Temperature
-25°C ~ 85°C (TA)
Base Product Number
TSOP95438
Datasheet & Documents
HTML Datasheet
TSOP95438TT-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
4 (72 Hours)
Additional Information
Other Names
751-TSOP95438TTTR
Standard Package
2,200
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
디지 일렉트로닉스의 애프터서비스가 정말 훌륭해요. 언제든 빠르게 지원해주셔서 믿음이 가요.
Dec 02, 2025
Leur fiabilité est impeccable et ils créent une atmosphère accueillante pour tous les clients.
Dec 02, 2025
Ich schätze die hohe Verpackungsqualität und die präzise Sendungsverfolgung.
Dec 02, 2025
Great value and environmentally responsible packaging—definitely worth supporting.
Dec 02, 2025
Prices are consistently low without sacrificing quality, making this my preferred supplier.
Dec 02, 2025
Their after-sales support team is knowledgeable and always willing to assist after the sale.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the TSOP95438TT in a noisy RF environment and how can they be mitigated?
When integrating the TSOP95438TT in environments with strong RF interference (e.g., near Wi-Fi or Bluetooth modules), false triggering or reduced sensitivity can occur due to its high-gain front-end amplifier. To mitigate this risk, ensure proper PCB layout with a ground plane under the sensor, use shielding cans if necessary, and place the TSOP95438TT as far as possible from RF sources. Additionally, implement ferrite beads on the VDD line and a 100nF ceramic capacitor close to the supply pins to filter high-frequency noise. These steps preserve the 38.0kHz bandpass filter performance and maintain reliable 25m reception range under real-world conditions.
How does the TSOP95438TT compare to the VS1838B for IR receiver replacement in existing 38kHz remote control designs?
While the VS1838B is a common 38kHz IR receiver, replacing it with the TSOP95438TT requires careful evaluation of supply voltage and timing compatibility. The TSOP95438TT operates at 2V to 3.6V, making it ideal for battery-powered systems, whereas the VS1838B typically requires 3.3V to 5V. Additionally, the TSOP95438TT offers superior noise immunity and lower supply current (370 µA vs ~1.2mA), but its top-view orientation and surface-mount Heimdal package demand re-layout of the PCB. Verify timing waveforms and AGC response through IR signal validation to ensure compatibility with legacy remote protocols.
What thermal and mechanical considerations should be addressed when placing the TSOP95438TT near a heat-generating component on an SMT assembly?
The TSOP95438TT has an operating temperature range of -25°C to 85°C (TA), but nearby heat sources (e.g., power regulators or LEDs) can push the sensor beyond its limits, leading to reduced sensitivity or output instability. To manage thermal risks, maintain at least a 5mm clearance between the TSOP95438TT and high-power components, and avoid placing it directly behind plastic overlays that trap heat. Since the Heimdal package is sensitive to thermal stress during reflow, adhere to MSL-4 requirements with controlled humidity exposure and complete assembly within 72 hours after baking if necessary.
Can the TSOP95438TT reliably detect IR signals through colored plastic enclosures, and what optical design trade-offs should be considered?
The TSOP95438TT can struggle with signal attenuation when paired with dark or colored plastic housings, especially blue or black, which block near-IR wavelengths (around 940nm). For reliable 25m performance, use IR-transparent (optically black but IR-transparent) or clear polycarbonate windows. Designers often make the trade-off between aesthetics and function—adding a small, recessed window improves signal reception while minimizing ambient light interference. Avoid placing the sensor behind thick (>3mm) or textured plastics, and consider ambient IR rejection by using hoods or baffles to block off-axis sunlight in outdoor-facing applications.
What failsafe design practices should be followed to ensure long-term reliability of the TSOP95438TT in humid or variable climate environments?
To ensure long-term reliability of the TSOP95438TT in humid or thermally cycling environments, address its MSL-4 classification by avoiding prolonged exposure to moisture before assembly and using conformal coating post-reflow (with UV-transparent coating if near UV sources). Guard against condensation by sealing the enclosure with desiccant or IP-rated gaskets. Electrical best practices include pulling the output pin high with a 10kΩ resistor to avoid floating states and protecting the supply line with overvoltage clamping if connected to non-regulated sources. These steps maintain signal integrity and prevent latent failures in consumer or industrial applications operating across the full -25°C to 85°C range.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
TSOP95438TT CAD Models
Vishay Semiconductor Opto Division TSOP95438TT PCB symbols & footprints
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