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MAX3741HETE
Electronics Part Number
MAX3741HETE-WXManufacturer
Powerex
MAX3741HETE
Description
Compact VCSEL Laser Driver IC for High-Speed Optical ModulesInventory
384 Pcs New Original In Stock
Single-channel 3.2Gbps laser driver, 5V supply, 16-TQFN-EP (3x3); high-speed modulation; for optical transceivers.
Quantity
Minimum 1
Minimum 1
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Basic cost: USD 70.00
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Technical Specifications
Category
Power Driver Modules
Manufacturer
Powerex
Packaging
-
Mounting Type
Through Hole
Package / Case
25-PowerDIP Module (1.134", 28.80mm)
Series
Intellimod™
Product Status
Discontinued at Digi-Key
Type
IGBT
Voltage - Isolation
1500VDC
Configuration
3 Phase
Current
20 A
Voltage
600 V
Data Sheet Document (D)
Datasheets
Download PS21965-4 Product Specification (PDF)
HTML Datasheet
PS21965-4-DG
Environmental & Export Classification
RoHS Status
RoHS Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
835-1043 PS219654
Standard Package
1
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the PS21965-4 in a new motor control application given i
Using the PS21965-4 in new designs carries significant supply chain risk due to its discontinued status at distributors like Digi-Key. While 8,300 units are in stock, long-term availability is not guaranteed, which can impact production scalability and end-of-life planning. Engineers should evaluate alternatives such as the Infineon FF600R12ME4 (1200V) or Mitsubishi PM200DSA120 (600V) and assess compatibility with existing gate drive and protection circuitry. For short-run or replacement designs, ensure adequate inventory buffer and confirm PB-free reflow compatibility with your assembly process to mitigate obsolescence risks.
How does the PS21965-4 compare to the Mitsubishi PM20DCA060 in terms of thermal performance and foot
The PS21965-4 and PM20DCA060 both support 20A/600V 3-phase motor drives but differ in thermal design and form factor. The PS21965-4 uses a 25-PowerDIP module with through-hole mounting, offering superior mechanical stability and higher isolation voltage (1500VDC), making it suitable for industrial environments with high noise or vibration. However, its larger footprint and limited thermal pad access compared to the PM20DCA060’s surface-mount design can hinder heat dissipation in tightly constrained PCBs. When retrofitting, verify heatsink attachment compatibility and consider derating the PS21965-4 by 15–20% in natural convection environments.
Can the PS21965-4 safely replace the older PS21865 in an existing HVAC inverter design, and what cha
Yes, the PS21965-4 can generally replace the PS21865 in legacy HVAC inverters as both are 600V 20A Intellimod™ IPMs with identical pinouts and protection features (overcurrent, thermal shutdown). However, the PS21965-4 has updated internal gate drivers with faster response times, which may increase EMI sensitivity. To mitigate this, revalidate snubber circuits and confirm that existing DC bus capacitance adequately supports the faster switching. Also verify that your microcontroller’s dead-time settings are sufficient to prevent shoot-through under high-temperature operation.
What are the practical limits of the PS21965-4 for PWM frequency in servo drive applications, and ho
The PS21965-4 is typically limited to PWM frequencies up to 10 kHz in continuous operation due to internal switching losses and thermal constraints. Operating above this—especially near the 20A rating—can cause excessive junction temperature rise, accelerating wear-out and reducing MTBF. For servo drives requiring 15–20 kHz switching, derate current to 12–15A and use forced-air cooling. Also, monitor case temperature at TP1 test point during validation; sustained temps above 85°C reduce long-term reliability even if thermal shutdown is not triggered.
What PCB layout precautions are critical when integrating the PS21965-4 to avoid gate noise coupling
Proper PCB layout is essential to prevent false triggering in the PS21965-4's internal gate drivers. Use a dedicated ground plane for signal and power return paths, and separate small-signal gate drive traces from high-current phase outputs. Keep low-side gate return paths short and connected directly to the PGND pin. Include 10–100Ω series resistors on gate inputs and add 100nF bypass capacitors between VDD and COM very close to the module. Given the PS21965-4’s through-hole mounting, avoid slotted thermal pads that can compromise routing integrity, and shield feedback signals like IPM fault lines with grounded vias.
What are the key design-in risks when using the PS21965-4 in a new motor control application given i
Using the PS21965-4 in new designs carries significant supply chain risk due to its discontinued status at distributors like Digi-Key. While 8,300 units are in stock, long-term availability is not guaranteed, which can impact production scalability and end-of-life planning. Engineers should evaluate alternatives such as the Infineon FF600R12ME4 (1200V) or Mitsubishi PM200DSA120 (600V) and assess compatibility with existing gate drive and protection circuitry. For short-run or replacement designs, ensure adequate inventory buffer and confirm PB-free reflow compatibility with your assembly process to mitigate obsolescence risks.
How does the PS21965-4 compare to the Mitsubishi PM20DCA060 in terms of thermal performance and foot
The PS21965-4 and PM20DCA060 both support 20A/600V 3-phase motor drives but differ in thermal design and form factor. The PS21965-4 uses a 25-PowerDIP module with through-hole mounting, offering superior mechanical stability and higher isolation voltage (1500VDC), making it suitable for industrial environments with high noise or vibration. However, its larger footprint and limited thermal pad access compared to the PM20DCA060’s surface-mount design can hinder heat dissipation in tightly constrained PCBs. When retrofitting, verify heatsink attachment compatibility and consider derating the PS21965-4 by 15–20% in natural convection environments.
Can the PS21965-4 safely replace the older PS21865 in an existing HVAC inverter design, and what cha
Yes, the PS21965-4 can generally replace the PS21865 in legacy HVAC inverters as both are 600V 20A Intellimod™ IPMs with identical pinouts and protection features (overcurrent, thermal shutdown). However, the PS21965-4 has updated internal gate drivers with faster response times, which may increase EMI sensitivity. To mitigate this, revalidate snubber circuits and confirm that existing DC bus capacitance adequately supports the faster switching. Also verify that your microcontroller’s dead-time settings are sufficient to prevent shoot-through under high-temperature operation.
What are the practical limits of the PS21965-4 for PWM frequency in servo drive applications, and ho
The PS21965-4 is typically limited to PWM frequencies up to 10 kHz in continuous operation due to internal switching losses and thermal constraints. Operating above this—especially near the 20A rating—can cause excessive junction temperature rise, accelerating wear-out and reducing MTBF. For servo drives requiring 15–20 kHz switching, derate current to 12–15A and use forced-air cooling. Also, monitor case temperature at TP1 test point during validation; sustained temps above 85°C reduce long-term reliability even if thermal shutdown is not triggered.
What PCB layout precautions are critical when integrating the PS21965-4 to avoid gate noise coupling
Proper PCB layout is essential to prevent false triggering in the PS21965-4's internal gate drivers. Use a dedicated ground plane for signal and power return paths, and separate small-signal gate drive traces from high-current phase outputs. Keep low-side gate return paths short and connected directly to the PGND pin. Include 10–100Ω series resistors on gate inputs and add 100nF bypass capacitors between VDD and COM very close to the module. Given the PS21965-4’s through-hole mounting, avoid slotted thermal pads that can compromise routing integrity, and shield feedback signals like IPM fault lines with grounded vias.
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Sep 15 2026
