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TS824ILT-2.5 Equivalent & Substitute Parts
Part Overview
The TS824ILT-2.5 is a shunt voltage reference integrated circuit manufactured by STMicroelectronics. This fixed 2.5V reference device operates with ±1% tolerance and delivers 15 mA output current in a surface-mount SOT-23-3 package. The component is classified as active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.
Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the critical parameters: fixed output voltage of 2.5V, 15 mA output current capability, ±1% or tighter tolerance, SOT-23-3 package format, and surface-mount technology. Alternative devices from Texas Instruments, Analog Devices Inc., and Diodes Incorporated meet these core requirements with varying performance enhancements in temperature coefficient, noise characteristics, and operating temperature range.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | TS824ILT-2.5 | — |
| Manufacturer | STMicroelectronics | — |
| Reference Type | Shunt | — |
| Output Type | Fixed | — |
| Voltage - Output (Fixed) | 2.5 | V |
| Current - Output | 15 | mA |
| Tolerance | ±1% | — |
| Temperature Coefficient | 50 | ppm/°C |
| Current - Cathode | 60 | µA |
| Operating Temperature Range | -40 to 85 | °C |
| Package / Case | SOT-23-3 | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts are classified into two categories based on electrical and mechanical compatibility with the TS824ILT-2.5:
Upgrade Substitutes maintain identical core electrical specifications (2.5V fixed output, 15 mA output current, ±1% tolerance, SOT-23-3 package) while offering enhanced performance characteristics. These parts are direct functional replacements with extended operating temperature ranges or improved temperature stability.
Similar Substitutes provide equivalent shunt voltage reference functionality with the same 2.5V output and 15 mA current rating in SOT-23-3 packaging but feature tighter tolerance specifications (±0.2% or ±0.1%), lower temperature coefficients, or enhanced noise performance. These devices are compatible at the circuit level and offer superior accuracy or stability for applications requiring higher precision.
Substitution eligibility is determined by the following mandatory parameters:
- Fixed output voltage: 2.5V
- Output current capability: 15 mA
- Tolerance: ±1% or tighter
- Package format: SOT-23-3 (TO-236-3, SC-59)
- Mounting technology: Surface Mount
- Reference type: Shunt
- Output type: Fixed
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage Output (V) | Current Output (mA) | Tolerance | Temp Coeff (ppm/°C) | Cathode Current (µA) | Operating Temp (°C) | Package | Product Status |
|---|---|---|---|---|---|---|---|---|---|
| TS824ILT-2.5 | STMicroelectronics | 2.5 | 15 | ±1% | 50 | 60 | -40 to 85 | SOT-23-3 | Active |
| LM4040D25QDBZR | Texas Instruments | 2.5 | 15 | ±1% | 150 | 80 | -40 to 125 | SOT-23-3 | Active |
| LM4040D25QDBZT | Texas Instruments | 2.5 | 15 | ±1% | 150 | 80 | -40 to 125 | SOT-23-3 | Active |
| ADR5041ARTZ-REEL7 | Analog Devices Inc. | 2.5 | 15 | ±0.2% | 100 | 60 | -40 to 125 | SOT-23-3 | Active |
| ADR5041BRTZ-R2 | Analog Devices Inc. | 2.5 | 15 | ±0.1% | 75 | 60 | -40 to 125 | SOT-23-3 | Discontinued at DiGi Electronics |
| ADR5041BRTZ-REEL7 | Analog Devices Inc. | 2.5 | 15 | ±0.1% | 75 | 60 | -40 to 125 | SOT-23-3 | Active |
| ADR5041WARTZ-R7 | Analog Devices Inc. | 2.5 | 15 | ±0.2% | 100 | 60 | -40 to 125 | SOT-23-3 | Active |
| ADR5041WBRTZ-R7 | Analog Devices Inc. | 2.5 | 15 | ±0.1% | 75 | 60 | -40 to 125 | SOT-23-3 | Active |
| LM4040A25IDBZR | Texas Instruments | 2.5 | 15 | ±0.1% | 100 | 80 | -40 to 85 | SOT-23-3 | Active |
| LM4040A25IDBZT | Texas Instruments | 2.5 | 15 | ±0.1% | 100 | 80 | -40 to 85 | SOT-23-3 | Active |
| LM4040B25FTA | Diodes Incorporated | 2.5 | 15 | ±0.2% | 100 | 68 | -40 to 125 | SOT-23-3 | Active |
Engineering Selection Recommendations
Upgrade Substitutes (Direct Replacements with Enhanced Performance)
The LM4040D25QDBZR and LM4040D25QDBZT from Texas Instruments are upgrade substitutes that maintain the ±1% tolerance specification while extending the operating temperature range to -40°C to 125°C. Both devices are active products with full RoHS3 compliance. The primary difference between these two parts is packaging format: LM4040D25QDBZR is supplied in Cut Tape (CT) & Digi-Reel® format with 17,714 units in stock, while LM4040D25QDBZT is supplied in Tape & Reel (TR) format with 1,488 units in stock. Selection between these variants depends on procurement and assembly requirements.
Similar Substitutes (Enhanced Accuracy Alternatives)
Analog Devices Inc. ADR5041 series devices provide tighter tolerance specifications and lower temperature coefficients compared to the TS824ILT-2.5. The ADR5041BRTZ-REEL7 and ADR5041WBRTZ-R7 offer ±0.1% tolerance with 75 ppm/°C temperature coefficient, while the ADR5041ARTZ-REEL7 and ADR5041WARTZ-R7 provide ±0.2% tolerance with 100 ppm/°C temperature coefficient. All ADR5041 variants extend the operating temperature range to -40°C to 125°C. The ADR5041WARTZ-R7 and ADR5041WBRTZ-R7 are automotive-grade devices. The ADR5041BRTZ-R2 is discontinued at DiGi Electronics and should not be selected for new designs.
Texas Instruments LM4040A25IDBZR and LM4040A25IDBZT offer ±0.1% tolerance with 100 ppm/°C temperature coefficient but maintain the original -40°C to 85°C operating temperature range. These devices are suitable for applications where the TS824ILT-2.5 temperature range is adequate but higher accuracy is required.
Diodes Incorporated LM4040B25FTA provides ±0.2% tolerance with 100 ppm/°C temperature coefficient and extends the operating temperature range to -40°C to 125°C. This device is active and RoHS3 compliant.
All substitute parts maintain RoHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and REACH unaffected status consistent with the TS824ILT-2.5.
Frequently Asked Questions (FAQ)
Q: Can the LM4040D25QDBZR directly replace the TS824ILT-2.5 in existing designs?
A: Yes. The LM4040D25QDBZR maintains identical electrical specifications (2.5V fixed output, 15 mA output current, ±1% tolerance) and uses the same SOT-23-3 package. The extended operating temperature range (-40°C to 125°C versus -40°C to 85°C) provides additional margin for high-temperature applications. Pin-to-pin compatibility is maintained.
Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?
A: Both packaging formats contain the same electronic component in SOT-23-3 format. Cut Tape & Digi-Reel® is supplied on individual tape segments suitable for manual or small-scale assembly. Tape & Reel is supplied on continuous reel format optimized for high-volume automated assembly. Selection depends on production volume and assembly equipment capabilities.
Q: Why do some substitute parts have lower temperature coefficients?
A: Temperature coefficient (ppm/°C) measures the output voltage drift across the operating temperature range. Lower values indicate better voltage stability over temperature. The TS824ILT-2.5 has 50 ppm/°C, while upgrade substitutes have 150 ppm/°C and similar substitutes range from 75 to 100 ppm/°C. For applications requiring stable reference voltage across wide temperature ranges, lower temperature coefficient devices are preferred.
Q: Are automotive-grade variants (ADR5041WARTZ-R7, ADR5041WBRTZ-R7) compatible with industrial applications?
A: Automotive-grade devices meet automotive qualification standards and are fully compatible with industrial applications. These variants provide the same electrical performance as their non-automotive counterparts with additional qualification testing. Selection of automotive-grade parts is optional unless specific automotive compliance is required.
Q: What does ±0.1% tolerance mean compared to ±1% tolerance?
A: Tolerance specifies the maximum deviation of the output voltage from the nominal 2.5V value. ±1% tolerance allows deviation up to ±0.025V (2.475V to 2.525V). ±0.1% tolerance restricts deviation to ±0.0025V (2.4975V to 2.5025V). Tighter tolerance devices are suitable for precision analog circuits requiring accurate reference voltages.
Q: Is the ADR5041BRTZ-R2 available for new designs?
A: No. The ADR5041BRTZ-R2 is discontinued at DiGi Electronics and should not be selected for new designs. Use the active ADR5041BRTZ-REEL7 variant instead, which provides identical electrical specifications with current product availability.
Q: What is the significance of cathode current specifications?
A: Cathode current represents the minimum operating current required to maintain regulation. The TS824ILT-2.5 requires 60 µA minimum cathode current. Substitute parts specify 60, 68, or 80 µA. Higher cathode current requirements increase power dissipation in the reference circuit. For low-power applications, devices with lower cathode current (60 µA) are preferred.
Q: Can substitute parts with extended temperature range (-40°C to 125°C) be used in applications rated for -40°C to 85°C?
A: Yes. Extended temperature range devices are fully backward compatible with applications requiring narrower temperature ranges. The extended range provides additional design margin and future flexibility without compromising performance in the original temperature specification.
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