HTW-00-BLUE Thumbwheel Switch - Equivalent & Substitute Parts

Part Overview

The HTW-00-BLUE is a thumbwheel switch manufactured by APEM Inc., featuring 1-axis analog Hall Effect output with a blue actuator. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design support and procurement. The switch is designed for panel-mount applications requiring directional control with analog feedback.

Substiute Parts

HTW-00-BLUE

APEM Inc.In Stock: 1141HTW-00-BLUE Datasheet

Current PartRFQ

TW01BLU1

APEM Inc.In Stock: 1147TW01BLU1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HTW-00-BLUE is determined by the following critical parameters:

• Output technology: Analog Hall Effect
• Supply voltage: 5VDC
• Actuator configuration: Thumbwheel, 1-axis
• Switch function: 2-way directional
• Mounting interface: Panel mount with wire leads
• Operating temperature range: -40°C to 85°C
• Mechanical durability: 5,000,000 cycles minimum
• Regulatory compliance: ROHS3 compliant

The substitute part TW01BLU1 maintains functional equivalence across all critical electrical and mechanical parameters while offering active product status and enhanced environmental protection.

Parameter Comparison

Engineering Selection Recommendations

TW01BLU1 is the direct active equivalent for HTW-00-BLUE applications. Selection is supported by:

• Identical electrical specifications (5VDC supply, Hall Effect analog output)
• Matching mechanical performance (5,000,000 cycle life, 2-way directional function)
• Equivalent operating temperature range (-40°C to 85°C)
• Active product status ensuring ongoing availability and support
• ROHS3 compliance maintaining regulatory alignment

The TW01BLU1 introduces IP67 environmental protection and operates at 70gf versus the original 80gf, with panel cutout dimensions varying by approximately 0.15mm and 0.25mm respectively. These differences do not affect functional substitution for standard panel-mount applications.

Frequently Asked Questions (FAQ)

Q: Can TW01BLU1 directly replace HTW-00-BLUE in existing designs?

A: Yes. Both parts share identical electrical output (5VDC Hall Effect analog), mechanical life rating (5,000,000 cycles), operating temperature range (-40°C to 85°C), and mounting interface (panel mount, wire leads). Panel cutout dimensions differ marginally (0.15mm and 0.25mm), which does not affect standard mounting applications.

Q: What is the significance of the operating force difference (80gf vs. 70gf)?

A: Operating force defines actuator resistance during thumbwheel rotation. The 10gf reduction in TW01BLU1 results in slightly lighter actuation. This difference is within typical user interface tolerance and does not affect electrical performance or signal output characteristics.

Q: Does the IP67 rating on TW01BLU1 provide additional capability?

A: IP67 classification (dust tight, waterproof) on TW01BLU1 provides enhanced environmental protection compared to HTW-00-BLUE. This is a supplementary feature that does not restrict substitution and may benefit applications requiring moisture or dust resistance.

Q: Are panel cutout dimension changes critical for substitution?

A: Panel cutout dimensions for TW01BLU1 (36.60mm x 16.30mm) differ from HTW-00-BLUE (36.45mm x 16.05mm) by 0.15mm and 0.25mm respectively. These tolerances are within standard mechanical machining practices and do not require panel redesign for typical applications.

Q: What is the inventory status for these parts?

A: HTW-00-BLUE (obsolete) has 1,066 pieces in stock. TW01BLU1 (active) has 1,059 pieces in stock, ensuring availability for new designs and ongoing production requirements.