MPMT1003CT1 Equivalent & Substitute Parts

Part Overview

The MPMT1003CT1 is a 2-resistor network voltage divider manufactured by Vishay Dale Thin Film. This surface-mount component features dual 50kΩ resistors with ±0.25% tolerance and ±25ppm/°C temperature coefficient in a compact SOT-23 package. The part is active and in production, with 776 units currently in stock. Substitute parts are identified when electrical specifications and mechanical compatibility remain within acceptable parameters for voltage divider applications requiring matched resistor pairs.

Substiute Parts

MPMT1003CT1

Vishay Dale Thin FilmIn Stock: 852MPMT1003CT1 Datasheet

Current PartRFQ

MPMT1003AT1

Vishay Dale Thin FilmIn Stock: 2353MPMT1003AT1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MPMT1003CT1 is determined by the following criteria:

Electrical Parameters (Must Match or Exceed):

• Resistance values: 50kΩ, 50kΩ
• Power per element: 100mW minimum
• Temperature coefficient: ±25ppm/°C maximum
• Operating temperature range: -55°C ~ 125°C minimum

Mechanical Parameters (Must Match):

• Package type: TO-236-3, SC-59, SOT-23-3
• Number of pins: 3
• Mounting type: Surface Mount
• Physical dimensions: 0.113" L x 0.051" W (2.86mm x 1.30mm)

Tolerance Consideration: The MPMT1003CT1 specifies ±0.25% tolerance. Substitute parts with equal or tighter tolerance specifications maintain functional equivalence for voltage divider circuits. Tighter tolerance (lower percentage value) represents an acceptable upgrade path.

Compliance Requirements:

• RoHS3 Compliant status required
• Moisture Sensitivity Level: 1 (Unlimited)

The MPMT1003AT1 meets all substitution criteria with improved tolerance specification (±0.1% vs ±0.25%), tighter resistor matching ratio (±0.05% vs ±0.1%), and identical electrical and mechanical parameters across all other specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the MPMT1003CT1 and MPMT1003AT1 are active production parts with ROHS3 compliance and unlimited moisture sensitivity rating. Selection between these parts is based on tolerance requirements and inventory availability.

The MPMT1003CT1 is suitable for applications where ±0.25% tolerance meets circuit specifications. The MPMT1003AT1 provides tighter tolerance (±0.1%) and improved resistor matching ratio (±0.05%), making it appropriate for precision voltage divider applications requiring enhanced accuracy. Both parts maintain identical thermal performance, power ratings, and mechanical compatibility.

Inventory considerations: MPMT1003AT1 has higher stock availability (2290 units vs 776 units), which may influence procurement decisions for high-volume production.

Frequently Asked Questions (FAQ)

Q: Can MPMT1003AT1 replace MPMT1003CT1 in existing designs?

A: Yes. The MPMT1003AT1 is electrically and mechanically compatible. It features tighter tolerance (±0.1% vs ±0.25%) and improved resistor matching (±0.05% vs ±0.1%), making it a direct substitute with enhanced performance characteristics.

Q: Are the physical dimensions identical?

A: Yes. Both parts share identical dimensions (0.113" L x 0.051" W / 2.86mm x 1.30mm) and maximum seated height (0.044" / 1.12mm). They are pin-compatible in SOT-23 footprints.

Q: What is the significance of the tolerance difference?

A: The MPMT1003CT1 specifies ±0.25% tolerance, while MPMT1003AT1 specifies ±0.1%. Tighter tolerance means individual resistor values remain closer to nominal specifications. For voltage divider applications, this improves output voltage accuracy and reduces circuit-to-circuit variation.

Q: Do both parts have the same temperature performance?

A: Yes. Both parts specify ±25ppm/°C temperature coefficient and operate across -55°C to 125°C. Thermal drift characteristics are identical.

Q: Are there compliance or certification differences?

A: No. Both parts are ROHS3 compliant with MSL 1 (Unlimited) rating. Compliance status is equivalent.

Q: Which part should be selected for new designs?

A: Selection depends on tolerance requirements. For precision applications, MPMT1003AT1 is preferred due to tighter tolerance and improved matching ratio. For standard applications where ±0.25% tolerance is acceptable, either part is suitable. Inventory availability may also influence procurement strategy.