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Microchip Technology MPLAD36KP24A/TR
- Part No.:
- MPLAD36KP24A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP24A/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:3,098
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Product details
Overview
MPLAD36KP24A/TR from Microsemi (now Microchip) is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤39.8 V at 905 A, and features a 24 V working standoff voltage with 26.7–29.5 V breakdown range at 5 mA test current.
For engineers reviewing the MPLAD36KP24A/TR datasheet, MPLAD36KP24A/TR pinout, MPLAD36KP24A/TR application, or MPLAD36KP24A/TR equivalent, this device is selected for RTCA DO-160 Section 22 multi-stroke lightning compliance, load dump suppression, and IEC 61000-4-5 secondary lightning protection - especially where low thermal resistance (1.0 °C/W junction-to-case), fast response (<100 ps clamping delay), and AEC-Q101 qualification are required.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp overvoltage transients before downstream circuitry sustains damage. Its metal-base PLAD package provides direct thermal path to PCB copper, enabling efficient heat dissipation during repetitive surges up to 36,000 W.
It is rated for –55 °C to +150 °C junction temperature, supports 260 °C soldering per J-STD-020D.1, and exhibits 22 mV/°C temperature coefficient of breakdown voltage - critical for stable clamping across wide ambient ranges in avionics and engine control units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W at 10/1000 μs waveform - enables robust protection against lightning-induced surges and automotive load dump events. |
| Working Standoff Voltage (VWM) | 24 V - matches nominal 24 V DC systems (e.g., aircraft avionics buses, commercial vehicle ECUs) without false triggering. |
| Clamping Voltage (VC) | 39.8 V at 905 A peak pulse current - ensures protected ICs see <40 V stress during worst-case transients. |
| Breakdown Voltage (VBR) | 26.7–29.5 V at 5 mA - guarantees reliable turn-on margin above 24 V operating rail with defined threshold tolerance. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows direct mounting to large copper pads or heatsinks for sustained energy absorption without thermal runaway. |
| Temperature Coefficient (αVBR) | 22 mV/°C - enables predictable clamping shift over temperature, supporting design margining in –40 °C to +85 °C environments. |
Pinout & Package
The MPLAD36KP24A/TR uses the PLAD (Power Leadless Array Device) surface-mount package: a low-profile, metal-base thermoset epoxy body (UL94V-0) with cathode on the exposed metal bottom surface. The device has two terminals - anode and cathode - with no internal leads or wire bonds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal (marked side) | Connected to protected line; reverse-biased during normal operation; conducts only during overvoltage events. |
| Cathode | Negative terminal (metal base) | Must be soldered to large copper pour or heatsink for thermal management and low-inductance return path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control modules and battery management systems. |
| RTCA DO-160G Section 22 compliant | Meets multi-stroke lightning test requirements for civil aircraft electronics, including Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). |
| Moisture Sensitivity Level 1 | No dry pack or baking required prior to reflow - simplifies SMT assembly and reduces manufacturing cost. |
| RoHS-compliant (e3 marking) | Lead-free matte-tin plating meets environmental regulations without compromising solderability or thermal performance. |
| 3σ lot norm screening on ID | Ensures consistent standby leakage (<10 µA at 24 V), critical for low-power always-on circuits like flight data recorders. |
Applications
| Aerospace Avionics Bus Protection | Commercial Vehicle ECU Protection |
|---|---|
Use Scenario: Protecting ARINC 429 data lines and 28 V DC power inputs in flight control computers against induced lightning transients per DO-160G Section 22. IC Role / Device Role / Timing Role: Unidirectional TVS placed at board edge to shunt surge energy to chassis ground before reaching FPGA, microcontroller, or interface ICs. Use Value: Clamps 905 A transients to ≤39.8 V within <100 ps, preserving signal integrity and preventing latch-up in 28 V rail systems. |
Use Scenario: Safeguarding engine control unit (ECU) power inputs during alternator load dump events (ISO 7637-2 Pulse 5a/b) in Class 8 trucks. IC Role / Device Role / Timing Role: Primary surge suppression device mounted directly at power entry point, paralleled with bulk capacitance. Use Value: Absorbs 36 kW pulses without degradation, maintaining <24 V system uptime and eliminating need for redundant fusing. |
| Industrial Motor Drive DC Link | Railway Signaling Power Supply |
Use Scenario: Protecting IGBT gate drivers and isolated DC-DC converters in variable-frequency drives subjected to switching-induced transients. IC Role / Device Role / Timing Role: Fast-response TVS on 24 V auxiliary supply rail to prevent false triggering of protection logic during PWM commutation. Use Value: 22 mV/°C αVBR ensures stable clamping across –40 °C to +105 °C drive cabinet temperatures. |
Use Scenario: Securing 24 V signaling power supplies in European railway interlocking systems against EFT bursts (IEC 61000-4-4) and lightning coupling. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing precise low-clamp voltage for sensitive relay drivers. Use Value: 39.8 V clamping at 905 A enables coordination with upstream GDTs while limiting stress on 30 V-rated optocouplers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower peak power (600 W), smaller SMB package, higher RθJA (50 °C/W vs. 1.0 °C/W), no AEC-Q101 or DO-160G validation. | Suitable for consumer-grade 24 V systems with single-event surges; not rated for multi-stroke lightning or automotive under-hood use. | Select SMBJ24A only for cost-sensitive, non-safety-critical applications where thermal mass and surge repetition are not concerns. |
| SMCJ24A | Higher peak power (1500 W), larger SMC package, RθJC ≈ 3.5 °C/W, AEC-Q101 qualified but not DO-160G tested. | Valid for ISO 7637-2 load dump in passenger vehicles; insufficient for DO-160G Section 22 multi-stroke testing in aviation. | Choose SMCJ24A when automotive qualification is required but aerospace compliance is not - avoids over-spec'ing for non-avionics use cases. |
Compared with SMBJ24A and SMCJ24A, the MPLAD36KP24A/TR delivers 24× and 24× higher peak power respectively, with 3.5× lower junction-to-case thermal resistance and formal DO-160G certification - making it the only option for mission-critical, high-repetition surge environments.
Availability
MPLAD36KP24A/TR is available at Aetrix Electronics and suitable for aerospace avionics, commercial vehicle ECUs, and industrial motor drives requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-critical designs.
Supply support for MPLAD36KP24A/TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi - now part of Microchip Technology - is a provider of high-reliability analog, mixed-signal, and radiation-hardened semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP24A/TR belongs to Microsemi's high-power PLAD TVS family, engineered specifically for DO-160G Section 22 multi-stroke lightning protection and automotive load dump immunity in harsh-environment electronics.
FAQ
What is the maximum clamping voltage of the MPLAD36KP24A/TR at its rated peak pulse current?
The MPLAD36KP24A/TR has a maximum clamping voltage (VC) of 39.8 V when subjected to its rated peak pulse current of 905 A at the 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that downstream components experience no more than 39.8 V during worst-case surge events - critical for protecting 30 V-rated ICs in 24 V systems.
Is the MPLAD36KP24A/TR suitable for bidirectional signal line protection?
No, the MPLAD36KP24A/TR is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It is designed for DC power rail protection where polarity is fixed, such as 24 V supply lines. For bidirectional AC or data-line protection, a part like MPLAD36KP24CA would be required - the MPLAD36KP24A/TR will conduct in forward bias and cannot suppress negative-going transients.
Does the MPLAD36KP24A/TR require special PCB layout considerations?
Yes - the MPLAD36KP24A/TR requires a dedicated thermal pad connected to a large copper pour or internal plane for heat dissipation. Its metal base serves as the cathode and primary thermal path; insufficient copper area increases junction temperature and degrades surge capability. Refer to Figure 7 (Pad Layout) in the datasheet for minimum copper dimensions and via placement guidelines.
What is the meaning of the "TR" suffix in MPLAD36KP24A/TR?
The "TR" suffix indicates tape-and-reel packaging per EIA-481-B standard, enabling automated pick-and-place assembly. The MPLAD36KP24A/TR is supplied in custom reels optimized for high-volume SMT production, with moisture sensitivity level 1 - meaning it can be used directly from reel without baking, even after extended storage.
How does the MPLAD36KP24A/TR meet RTCA DO-160G Section 22 requirements?
The MPLAD36KP24A/TR is validated for DO-160G Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) at Level 4 and Level 5. Its 36 kW rating, sub-100 ps response time, and low clamping voltage ensure compliance without external derating - unlike lower-power TVS devices that require parallel staging or external filtering.
MPLAD36KP24A/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 39.8V
- Current - Peak Pulse (10/1000µs):
- 905A
- Power - Peak Pulse:
- 36000W (36kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP24A/TR FAQ
1.How can I place an order for MPLAD36KP24A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP24A/TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MPLAD36KP24A/TR reliable?
The price and inventory of MPLAD36KP24A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP24A/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP24A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP24A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP24A/TR?
MPLAD36KP24A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP24A/TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MPLAD36KP24A/TR?
For technical support, including MPLAD36KP24A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP24A/TR requirements.
6.How does Aetrix verify that MPLAD36KP24A/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP24A/TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPLAD36KP24A/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP24A/TR?
All MPLAD36KP24A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP24A/TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MPLAD36KP24A/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP24A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP24A/TR Tags
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