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Microchip Technology MPLAD36KP180A
- Part No.:
- MPLAD36KP180A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP180A.pdf
- Description:
- TVS DIODE 180VWM 291VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,103
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Product details
Overview
MPLAD36KP180A from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps at ≤291 V under 100 A peak impulse current, and features 180 V reverse standoff voltage with 200–221 V breakdown range. Its low-profile thermoset epoxy package (12.57 × 10.80 × 5.33 mm) enables robust lightning protection per RTCA DO-160 Section 22 and IEC 61000-4-5 Class 4.
For engineers reviewing the MPLAD36KP180A datasheet, MPLAD36KP180A pinout, MPLAD36KP180A application, or MPLAD36KP180A equivalent, this device is selected for high-reliability DC bus protection where precise VWM ≥180 V, sub-100 ns response time, thermal resistance <1.0 °C/W junction-to-case, and AEC-Q101 qualification are required - especially in avionics power distribution and 24/28 V vehicle load-dump circuits.
Technical Context
The MPLAD36KP180A operates as a silicon avalanche diode-based TVS, triggered by reverse-biased breakdown above its 200–221 V V(BR) range. It exhibits <100 ps response to transients and maintains clamping voltage ≤291 V at 100 A IPP under 10/1000 μs waveform, with thermal resistance RθJC = 1.0 °C/W enabling direct heatsink mounting. Its unidirectional polarity places the cathode on the metal baseplate for optimal thermal path.
Designed for multi-stroke lightning compliance (RTCA DO-160F Waveform 4 & 5A), it supports Level 4 pin injection protection up to 180 V VWM and meets IEC 61000-4-2/4-4 ESD/EFT immunity. Standby current ID is ≤10 μA at 180 V, and temperature coefficient αV(BR) is +219 mV/°C - critical for stable clamping across -55°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced surges without failure |
| Reverse Standoff Voltage (VWM) | 180 V - maximum continuous DC voltage before clamping initiates; matches 24/28 V system derated peaks |
| Breakdown Voltage (V(BR)) | 200–221 V @ 5 mA - defines precise avalanche onset threshold for predictable clamping behavior |
| Max Clamping Voltage (VC) | 291 V @ 100 A - limits downstream component stress during worst-case transients |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct metal-base thermal coupling to heatsinks for sustained multi-pulse operation |
| Standby Current (ID) | ≤10 μA @ 180 V - negligible leakage in always-on 24 V rail monitoring applications |
| Temperature Coefficient (αV(BR)) | +219 mV/°C - ensures V(BR) increases predictably with junction temperature, preventing premature conduction |
Pinout & Package
Package: PLAD (Plastic Leaded Anode Down) - void-free UL94V-0 thermoset epoxy body with metal baseplate cathode termination; dimensions 12.57 mm × 10.80 mm × 5.33 mm (L×W×H); weight ~1.85 g; RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface Pads) | Transient current entry point | Two parallel solderable pads (A=11.94 mm, B=5.85 mm) provide low-inductance path for surge current into device |
| Cathode (Metal Baseplate) | Current return & thermal path | Entire bottom metal surface serves as low-resistance cathode and primary heat sink interface - requires direct thermal mounting |
Key Features
| Feature | Design Value |
|---|---|
| Aerospace-grade surge rating | Validated to RTCA DO-160F Section 22 Lightning Waveforms 4 & 5A - Level 4 up to 180 V VWM |
| High-reliability construction | Wafer and assembly lot traceability + 3σ screening on ID + AEC-Q101 qualified |
| Low thermal resistance package | RθJC = 1.0 °C/W enables >1000 pulses at 0.05% duty cycle without thermal runaway |
| Multi-standard compliance | IEC 61000-4-2 (ESD), -4-4 (EFT), -4-5 (lightning) with 2/12/42 Ω source impedances |
| Moisture sensitivity | IPC/JEDEC J-STD-020B Level 1 - no dry pack or bake required prior to reflow |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting avionics DC bus (28 V nominal) against lightning-induced transients per RTCA DO-160F Section 22. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches flight control ECUs or power converters. Use Value: Enables single-device compliance with Level 4 pin injection (Waveform 4) and secondary lightning (42 Ω, Class 4) without external series impedance. | Use Scenario: Safeguarding 24 V/28 V vehicle electronics during alternator load dump events (ISO 16750-2). IC Role / Device Role / Timing Role: Fast-response avalanche diode absorbing 100+ V spikes within <100 ps to prevent MOSFET gate oxide rupture. Use Value: Clamps to ≤291 V at 100 A while maintaining <10 μA leakage - eliminates need for parallel Zener stacks or active crowbars. |
| Industrial Motor Drive DC Link | Railway Signaling Power Supply |
Use Scenario: Suppressing switching transients on 200–250 V DC link rails in variable-frequency drives. IC Role / Device Role / Timing Role: High-power TVS placed across DC bus capacitors to clamp IGBT turn-off spikes and regenerative energy surges. Use Value: 36 kW PPP rating handles repetitive 10/1000 μs surges at 0.05% duty factor - extends capacitor lifetime vs. lower-PPP alternatives. | Use Scenario: Securing 110 V DC signaling power supplies in EN 50121-3-2 compliant railway control cabinets. IC Role / Device Role / Timing Role: Primary overvoltage protector against induced surges from nearby traction currents or lightning coupling. Use Value: Meets IEC 61000-4-5 Class 4 with 12 Ω source impedance - clamps to 291 V while surviving >1000 surges per MIL-PRF-19500 upscreening options. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SP36-180 | Same 180 V VWM and 291 V VC, but 25 kW PPP rating and higher RθJC (1.5 °C/W) | Lower pulse power margin in multi-stroke lightning scenarios requiring >30 kW sustained | Select MPLAD36KP180A when RTCA DO-160F Section 22 multi-stroke compliance is mandatory |
| Vishay SMAJ180A | 180 V VWM, but only 400 W PPP and 300 V VC @ 1.3 A - not suitable for high-energy surges | Restricted to low-energy ESD/EFT protection; cannot replace MPLAD36KP180A in load-dump or lightning roles | Use SMAJ180A only for board-level signal-line protection; MPLAD36KP180A remains required for DC bus-level surge suppression |
Compared with SP36-180 and SMAJ180A, the MPLAD36KP180A uniquely delivers 36 kW pulse power with 1.0 °C/W thermal resistance and RTCA DO-160F validation - making it irreplaceable for aerospace-grade DC bus protection where single-event energy exceeds 500 J and thermal cycling endurance is critical.
Availability
MPLAD36KP180A is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive DC link applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MPLAD36KP180A 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 Corporation (now part of Microchip Technology) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP180A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection and automotive load-dump suppression in mission-critical power systems.
FAQ
What is the clamping voltage of the MPLAD36KP180A at its rated peak pulse current?
The MPLAD36KP180A has a maximum clamping voltage (VC) of 291 V at 100 A peak pulse current under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring downstream components remain within safe operating area.
Is the MPLAD36KP180A suitable for bidirectional surge protection?
No, the MPLAD36KP180A is a unidirectional TVS diode. Its part number suffix "A" (not "CA") confirms unidirectional construction. For bidirectional protection at 180 V, the correct variant is MPLAD36KP180CA. Using MPLAD36KP180A in AC-coupled or bipolar signal paths will result in forward conduction during negative transients and potential device failure.
Does the MPLAD36KP180A require a heatsink for standard operation?
Yes - the MPLAD36KP180A's metal baseplate cathode must be thermally bonded to a heatsink or copper pour. With RθJC = 1.0 °C/W and RθJA = 50 °C/W, junction temperature rises rapidly without external thermal management. The datasheet specifies case temperature control on a heatsink (Note 4), and FR4 pad layout guidelines require thermal vias and copper area to maintain TJ ≤150°C during repetitive surges.
What standards does the MPLAD36KP180A meet for lightning protection?
The MPLAD36KP180A is validated for RTCA DO-160F Section 22 lightning testing (Waveform 4 and 5A) up to Level 4, and for IEC 61000-4-5 secondary lightning with 2 Ω, 12 Ω, and 42 Ω source impedances - including Class 4 at 42 Ω. These certifications are explicitly listed in the RF01216 Rev B datasheet for the MPLAD36KP180A variant.
What is the moisture sensitivity level (MSL) of the MPLAD36KP180A?
The MPLAD36KP180A has IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1, meaning it is not moisture-sensitive and requires no dry pack, baking, or special handling prior to reflow soldering. This simplifies manufacturing logistics and eliminates MSL-related yield loss in high-volume SMT assembly.
MPLAD36KP180A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 180V
- Voltage - Breakdown (Min):
- 200V
- Voltage - Clamping (Max) @ Ipp:
- 291V
- Current - Peak Pulse (10/1000µs):
- 124A
- Power - Peak Pulse:
- 36000W (36kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP180A FAQ
1.How can I place an order for MPLAD36KP180A through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP180A 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 MPLAD36KP180A reliable?
The price and inventory of MPLAD36KP180A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP180A is usually 5 days.
3.What payment methods are accepted for MPLAD36KP180A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP180A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP180A?
MPLAD36KP180A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP180A 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 MPLAD36KP180A?
For technical support, including MPLAD36KP180A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP180A requirements.
6.How does Aetrix verify that MPLAD36KP180A is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP180A 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 MPLAD36KP180A meets industry standards.
7.What is the process for return or replacement of MPLAD36KP180A?
All MPLAD36KP180A units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP180A, 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 MPLAD36KP180A part is unused and in its original packaging.
Return procedure for MPLAD36KP180A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP180A Tags
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