QTM601T1 Equivalent & Substitute Parts

Part Overview

The QTM601T1 is a logic output optoisolator manufactured by QT Brightek, designed for high-speed digital isolation applications requiring 3750Vrms isolation voltage and 10Mbps data rate capability. This component features an open collector output with Schottky clamping, single-channel configuration, and 5kV/µs common mode transient immunity. The QTM601T1 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

QTM601T1

QT Brightek (QTB)In Stock: 910QTM601T1 Datasheet

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ELM601(TA)-V

Everlight Electronics Co LtdIn Stock: 1019ELM601(TA)-V Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the QTM601T1 are identified based on strict electrical and mechanical parameter matching within the optoisolator category. The substitution criteria are:

Critical Matching Parameters:

• Voltage isolation rating: 3750Vrms
• Common mode transient immunity: 5kV/µs minimum
• Data rate: 10Mbps
• Output configuration: Open collector with Schottky clamping
• Number of channels: 1
• Current output capability: 50 mA per channel
• Input type: DC
• Supply voltage: 7V
• Mounting type: Surface mount
• Package footprint: 6-SOIC (0.173", 4.40mm Width), 5 Leads

The ELM601(TA)-V from Everlight Electronics Co Ltd meets all critical electrical parameters and maintains mechanical compatibility through identical package specifications. Differences in propagation delay timing and operating temperature range do not preclude substitution when the application requirements fall within the substitute part's specifications.

Parameter Comparison

Engineering Selection Recommendations

The ELM601(TA)-V is a direct functional substitute for the obsolete QTM601T1 based on electrical parameter equivalence and mechanical compatibility. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

Compliance Considerations:

• Both parts carry EAR99 export classification
• Both parts fall under HTSUS code 8541.49.8000
• The ELM601(TA)-V holds ROHS3 compliance certification
• Both parts maintain MSL 1 (Unlimited) moisture sensitivity rating

Timing Parameter Differences: The ELM601(TA)-V exhibits maximum propagation delays of 100ns compared to 75ns for the QTM601T1. This 25ns difference must be evaluated against application timing budgets. Rise and fall times remain identical at 40ns and 10ns respectively.

Temperature Range Consideration: The ELM601(TA)-V operates from -40°C to 85°C, compared to the QTM601T1 range of -55°C to 85°C. Applications requiring operation below -40°C require verification that the substitute part meets system requirements.

Packaging and Delivery: The ELM601(TA)-V is supplied in Tape & Reel packaging, whereas the QTM601T1 supplier device package designation is 5-Mini-Flat. Both maintain identical 6-SOIC footprints and lead configurations, ensuring PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the ELM601(TA)-V directly replace the QTM601T1 in existing designs?

A: The ELM601(TA)-V provides electrical and mechanical compatibility for applications where the operating temperature range of -40°C to 85°C and maximum propagation delay of 100ns are acceptable. PCB footprint compatibility is confirmed through identical 6-SOIC package specifications. Verification of timing margins and temperature requirements is necessary before implementation.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete vs. active), propagation delay specifications (75ns vs. 100ns maximum), operating temperature range (-55°C to 85°C vs. -40°C to 85°C), and supplier device package designation (5-Mini-Flat vs. 5-SOP). All critical isolation voltage, CMTI, data rate, and output current specifications are identical.

Q: Are there any compliance or certification differences?

A: The ELM601(TA)-V includes ROHS3 compliance certification. Both parts share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. Both maintain MSL 1 (Unlimited) moisture sensitivity ratings.

Q: How do the propagation delay differences affect system performance?

A: The ELM601(TA)-V maximum propagation delay of 100ns is 25ns longer than the QTM601T1 specification of 75ns. Applications operating at 10Mbps data rates must verify that this timing difference does not exceed system timing budgets or setup/hold time requirements.

Q: Is the ELM601(TA)-V suitable for low-temperature applications?

A: The ELM601(TA)-V minimum operating temperature is -40°C. Applications requiring operation below -40°C must use the QTM601T1 or identify alternative parts with extended low-temperature specifications. The QTM601T1 supports operation down to -55°C.

Q: What is the availability status of these parts?

A: The QTM601T1 is classified as obsolete. The ELM601(TA)-V is in active production status, providing assured long-term availability and supply chain support for new designs and legacy system maintenance.