tune Passive Components Calculator

Resistor Voltage Divider

Algorithmic BOM cost optimization, Monte Carlo simulation, extreme value analysis with TCR, and dynamic sink/source load analysis.

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Divider Parameters

Input Voltage (Vin) V
Vin Tolerance %
Resistor Tolerance
Selects E-series standard values and sets EVA/MC tolerance envelope
Target Output (Vout) V
Max Vout Tol (Unloaded) ±%
Max Vout Tol (Loaded) ±%
Max Iq µA
Solver Target
Both modes auto-select the optimal resistor tolerance. "Lowest Vout error" tries all tiers and picks the most accurate pair. "Cheapest" picks the lowest-cost tier that passes EVA.
R1 (Ideal) kΩ
→ 10 kΩ (E24, 0.0% err)
R2 (Ideal) kΩ
→ 3.3 kΩ (E24, 0.0% err)
Enter any value — it will be snapped to the nearest standard resistor from the selected tolerance bin above.
device_hub Load Configuration (RL)
RL kΩ
RL Tolerance %
Load Ref Voltage V
Vref Tolerance %
Reference potential for load return path. 0 = GND.
thermostat Thermal Environment
Temp Min °C
Temp Max °C
Resistor TCR ppm/°C
100 = thick film, 25 = thin film, 10 = precision metal film
Vout — Ideal (Unloaded)
—V
Vout — Actual (Loaded)
—V
Divider Current (Iq)
—µA
Load Current
—µA
P(R1)
—mW
P(R2)
—mW

schema Circuit Diagram

Vin = 12.0V R1 — Iq — Vout — R2 — RL ∞ GND R2∥RL = — Vout = Vin × R2∥RL / (R1 + R2∥RL)

psychology Tolerance Optimization Engine

Set Vin and a valid target Vout to optimize.

troubleshoot Extreme Value Analysis

Vout Min
—
worst-case low
Vout Nominal
—
center value
Vout Max
—
worst-case high
— —
Total Spread
—
Spread %
—
—

bar_chart Monte Carlo Analysis

Iterations 1000
Yield
—
within target tol
Mean
—
Std Dev (σ)
—
Min
—
Max
—
3σ Range
—

Use these values in DC Power Architect

Copy the optimized R1/R2 parameters to your clipboard and open the app to build a live simulation.

Note: These tools and articles provide theoretical estimates for educational purposes. Actual results may vary depending on real-world component tolerances, parasitics, and thermal conditions.