PTF56250R00BYEK Vishay Resistor (Resistors, Axial Diameter Horizontal Mounting) In Stock
Vishay PTF56250R00BYEK is a precision axial metal film resistor with 250 Ω resistance, ±0.1% tolerance, ±10 ppm/°C temperature coefficient, and 0.125 W power rating in a through-hole tubular package for high-accuracy analog circuits. Available from stock with worldwide shipping.
- Manufacturer
- Vishay
- Package
- Resistors, Axial Diameter Horizontal Mounting
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- PTF56250R00BYEK Datasheet PDF
- Category
- Resistor
- Temp Range
- -55.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ±0.1% resistance tolerance and ±10 ppm/°C temperature coefficient for high-precision analog signal conditioning and reference circuits
- 250 Ω metal film construction delivers low noise and excellent long-term stability compared with carbon film or carbon composition resistors
- Through-hole axial tubular package rated at 0.125 W / 85°C enables easy prototyping and manual assembly in precision instrumentation designs
Applications
The PTF56250R00BYEK is suited for precision voltage dividers, Wheatstone bridge arms, and gain-setting networks in test and measurement equipment, medical instrumentation, and high-accuracy data acquisition systems where resistance drift below ±10 ppm/°C is required. Its ±0.1% tolerance ensures that ratiometric divider errors remain below 0.2% over the rated temperature range, meeting the accuracy requirements of 12-bit to 16-bit ADC front-end circuits. The axial through-hole package also suits precision laboratory instruments, calibration standards boards, and prototype analog circuits where hand assembly and in-circuit trimming are performed.
Specifications
| Reach Compliance Code | Not Compliant |
| Factory Lead Time | 20Weeks |
| YTEOL | 9 |
| Additional Feature | PRICISION |
| JESD-609 Code | e3 |
| Mounting Feature | THROUGH HOLE MOUNT |
| Package Shape | TUBULAR PACKAGE |
| Packing Method | BULK |
| Rated Power Dissipation (P) | 0.125W |
| Rated Temperature | 85°C |
| Resistance | 250Ω |
| Resistor Type | FIXED RESISTOR |
| Surface Mount | NO |
| Technology | METAL FILM |
| Temperature Coefficient | 10ppm/°C |
| Terminal Finish | Matte Tin (Sn) - with Nickel (Ni) barrier |
| Terminal Shape | WIRE |
| Tolerance | 0.1% |
| Working Voltage | 300V |
| Package | Resistors, Axial Diameter Horizontal Mounting |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.21.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What resistance value, tolerance, and temperature coefficient does the PTF56250R00BYEK provide and why do these specs matter in precision analog designs?
The PTF56250R00BYEK is a 250 Ω resistor with ±0.1% initial tolerance and ±10 ppm/°C temperature coefficient. Over a 50°C operating range, the resistance shifts by at most 0.05% (500 ppm), keeping voltage divider and gain-setting errors below ±0.15% total—adequate to preserve the accuracy of a 12-bit ADC front-end operating from a stable 5 V reference.
How does the ±10 ppm/°C TCR of the PTF56250R00BYEK compare to standard 1% resistors and when is the lower TCR worth the higher unit cost?
Standard 1% thin-film chip resistors typically carry a ±100 ppm/°C TCR, ten times higher than the ±10 ppm/°C rating of the PTF56250R00BYEK. In a bridge circuit operating across a 60°C temperature swing, the 1% resistor drifts up to 6000 ppm (0.6%), introducing a span error that masks a 0.05 mV/°C sensor signal. The PTF56250R00BYEK limits drift to 600 ppm (0.06%), making it the correct choice for load cell and strain gauge bridges requiring less than 0.1% accuracy over temperature.
What is the maximum power dissipation for the PTF56250R00BYEK and how should it be derated in a 70°C enclosure?
The PTF56250R00BYEK is rated at 0.125 W at 70°C with derating to zero power at the 85°C maximum rated temperature. At a 70°C ambient enclosure temperature, the maximum allowable dissipation is reduced from 0.125 W toward the derating curve limit; a conservative design applies no more than 50% of rated power (0.0625 W) to maintain a 15°C thermal margin and preserve long-term resistance stability and rated ±0.1% tolerance.
When would a procurement engineer choose the PTF56250R00BYEK over a surface-mount 0603 precision resistor for the same 250 Ω application?
The axial through-hole PTF56250R00BYEK is preferred over an 0603 SMD alternative in prototype and low-volume precision lab instruments where hand soldering, in-circuit probing with 4-wire Kelvin clips, and component swap-out during calibration are routine. The through-hole leads allow repeated rework without pads lifting, and the 4.0 mm body length provides enough exposed wire for clipping test probes without disturbing adjacent components on a 2.54 mm pitch prototype board.
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