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Microchip Technology MPLAD36KP51AE3/TR
- Part No.:
- MPLAD36KP51AE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP51AE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:5,192
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Product details
Overview
MPLAD36KP51AE3/TR from Microchip Technology (formerly Microsemi) is a surface-mount unidirectional 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 ≤82.4 V at 437 A, and features a 51 V working standoff voltage with 56.7–62.7 V breakdown range at 5 mA.
For engineers reviewing the MPLAD36KP51AE3/TR datasheet, MPLAD36KP51AE3/TR pinout, MPLAD36KP51AE3/TR application, or MPLAD36KP51AE3/TR equivalent, key selection criteria include its DO-160 Section 22 multi-stroke lightning compliance, 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant matte-tin plating, and suitability for secondary lightning protection per IEC 61000-4-5 up to Class 5 (short distance).
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp fast-rising transients, with sub-100 ps response time for unidirectional variants. Its low RθJC (1.0 °C/W) enables effective heat transfer to an external heatsink, supporting sustained surge handling without thermal runaway under repeated 0.05% duty cycle conditions.
The device meets AEC-Q101 qualification and is rated for –55 °C to +150 °C junction temperature. Its 51 V VWM targets 42 V nominal DC systems (e.g., 36 V automotive), while the 82.4 V VC at IPP = 437 A ensures downstream ICs remain below absolute maximum ratings during load dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W at 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Working Standoff Voltage (VWM) | 51 V - matches 36 V automotive systems with ≥40% margin over nominal rail |
| Clamping Voltage (VC) | 82.4 V at 437 A - limits transient voltage seen by protected circuitry |
| Breakdown Voltage (VBR) | 56.7–62.7 V at 5 mA - defines precise conduction onset threshold |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct mounting to heatsink for thermal management |
| Standby Current (ID) | ≤10 µA at 51 V - negligible leakage in standby, critical for battery-coupled systems |
| Temperature Coefficient (αVBR) | 58 mV/°C - quantifies VBR drift across operating temperature range |
Pinout & Package
Package: PLAD (Plastic Low-profile Anode-down) - thermally optimized surface-mount package with metal base acting as cathode terminal and primary heat path. Dimensions: 10.3 × 8.9 × 4.5 mm (L × W × H); weight ≈ 1.85 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface) | Current entry point during reverse-biased clamping | Connected to protected line; requires PCB pad layout per Figure 7 for optimal thermal dissipation |
| Cathode (metal base) | Current exit point and thermal interface | Must be soldered directly to large copper pour or heatsink; serves as primary thermal conduction path |
Key Features
| Feature | Design Value |
|---|---|
| DO-160G Section 22 compliance | Validated for multi-stroke lightning protection in avionics power distribution units |
| AEC-Q101 qualification | Guarantees reliability for automotive 12 V/24 V/42 V power net applications |
| RoHS-compliant e3 marking | Meets EU Directive 2011/65/EU with annealed matte-tin plating for lead-free assembly |
| Level 1 moisture sensitivity | No dry pack required per J-STD-020D.1 - simplifies SMT handling and storage |
| 3σ lot norm screening on ID | Ensures consistent low-leakage performance across production lots |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
|
Use Scenario: 28 V DC power bus in flight control actuator electronics exposed to RTCA/DO-160G Waveform 4 (6.4/69 μs) lightning-induced transients. IC Role / Device Role / Timing Role: Primary clamping element shunting surge current away from DC-DC converters and motor drivers. Use Value: Enables Level 4/5 pin-injection protection without derating, leveraging 82.4 V clamping to keep downstream FETs within safe SOA. |
Use Scenario: 12 V/24 V vehicle battery rail during alternator load dump events (ISO 7637-2 Pulse 5a/b). IC Role / Device Role / Timing Role: Unidirectional TVS absorbing >36 kW energy pulses while maintaining <100 ps response. Use Value: Prevents gate oxide damage in power MOSFETs by limiting transient voltage to ≤82.4 V at 437 A peak. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
|
Use Scenario: 48 V DC link in servo drive inverters subjected to IEC 61000-4-5 Class 4 surges (4 kV, 2 Ω source). IC Role / Device Role / Timing Role: Secondary surge protector placed after upstream MOVs to handle residual fast transients. Use Value: Clamps residual overshoot to 82.4 V within 100 ps, protecting gate drivers and isolated feedback circuits. |
Use Scenario: 72 V signaling line in ERTMS/ETCS Level 2 trackside equipment facing induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Standoff-rated TVS suppressing EFT bursts (IEC 61000-4-4) and lightning coupling (IEC 61000-4-5). Use Value: Maintains signal integrity with ≤10 µA leakage at 51 V, avoiding false triggering in low-current detection circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | Lower peak power (600 W), SMA package, RθJC = 40 °C/W | Not suitable for DO-160G multi-stroke or automotive load dump; limited to board-level ESD/EFT | Select only for cost-sensitive consumer electronics where 36 kW capability is unnecessary |
| SMCJ51A | Higher peak power (1500 W), SMC package, RθJC = 15 °C/W | Supports ISO 7637-2 Pulse 5 but lacks DO-160G validation and AEC-Q101 qualification | Use for industrial controls requiring higher surge rating than SMBJ but not aerospace certification |
Compared with SMBJ51A and SMCJ51A, the MPLAD36KP51AE3/TR provides 24× and 24× higher peak power respectively, validated DO-160G compliance, and AEC-Q101 qualification-making it the only option for certified aerospace and high-reliability automotive power rail protection.
Availability
MPLAD36KP51AE3/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MPLAD36KP51AE3/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
Microchip Technology acquired Microsemi in 2018, integrating its high-reliability analog, timing, and discrete portfolio. Microchip serves aerospace, defense, communications, and industrial markets with radiation-hardened ICs, power management, and precision timing solutions.
The MPLAD36KP51AE3/TR belongs to Microchip's PLAD-series high-power TVS family, engineered specifically for certified lightning and load dump protection in safety-critical power systems where thermal robustness and multi-stroke endurance are mandatory.
FAQ
What is the clamping voltage of the MPLAD36KP51AE3/TR at its rated peak pulse current?
The MPLAD36KP51AE3/TR has a maximum clamping voltage (VC) of 82.4 V when subjected to its rated peak pulse current (IPP) of 437 A at the standard 10/1000 μs waveform. This value is measured per test condition defined in Table 4 of the datasheet and represents the upper limit of voltage imposed on the protected circuit during worst-case surge events.
Is the MPLAD36KP51AE3/TR qualified for automotive applications?
Yes, the MPLAD36KP51AE3/TR is AEC-Q101 qualified, confirming its reliability for automotive power electronics including 12 V, 24 V, and 42 V systems. It is specifically designed to withstand load dump transients per ISO 7637-2 Pulse 5a/b and supports secondary lightning protection per IEC 61000-4-5 in vehicle ECUs and body control modules.
Does the MPLAD36KP51AE3/TR require dry pack handling per J-STD-020?
No, the MPLAD36KP51AE3/TR is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020D.1, meaning it does not require dry pack packaging or baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates moisture-related popcorning risks during assembly.
How is thermal management implemented for the MPLAD36KP51AE3/TR?
Thermal management for the MPLAD36KP51AE3/TR relies on its metal-base cathode acting as the primary heat path. With a junction-to-case thermal resistance of 1.0 °C/W, it must be soldered to a large copper pour or external heatsink using the recommended pad layout (Figure 7). The FR4 board layout with 1 oz Cu is validated for RθJA = 50 °C/W at TA = 25 °C.
What standards does the MPLAD36KP51AE3/TR meet for lightning protection?
The MPLAD36KP51AE3/TR meets RTCA DO-160G Section 22 for multi-stroke lightning protection in aircraft systems and supports secondary lightning protection per IEC 61000-4-5 across Classes 1–5 depending on source impedance (2 Ω, 12 Ω, or 42 Ω). Its 36 kW rating and sub-100 ps response enable compliance with stringent aviation surge immunity requirements.
MPLAD36KP51AE3/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):
- 51V
- Voltage - Breakdown (Min):
- 56.7V
- Voltage - Clamping (Max) @ Ipp:
- 82.4V
- Current - Peak Pulse (10/1000µs):
- 437A
- 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
MPLAD36KP51AE3/TR FAQ
1.How can I place an order for MPLAD36KP51AE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP51AE3/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 MPLAD36KP51AE3/TR reliable?
The price and inventory of MPLAD36KP51AE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP51AE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP51AE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP51AE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP51AE3/TR?
MPLAD36KP51AE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP51AE3/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 MPLAD36KP51AE3/TR?
For technical support, including MPLAD36KP51AE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP51AE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP51AE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP51AE3/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 MPLAD36KP51AE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP51AE3/TR?
All MPLAD36KP51AE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP51AE3/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 MPLAD36KP51AE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP51AE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP51AE3/TR Tags
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