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Microchip Technology MPLAD36KP33CAE3
- Part No.:
- MPLAD36KP33CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP33CAE3.pdf
- Description:
- TVS DIODE 33VWM 53.3VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,735
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Product details
Overview
MPLAD36KP33CAE3 from Microsemi is a bidirectional 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 ≤53.3 V under 676 A peak impulse current, and features a 33 V reverse standoff voltage (VWM), RoHS-compliant e3 plating, and UL94V-0 epoxy package - deployed in lightning-prone avionics interfaces and load-dump-protected vehicle ECUs.
For engineers reviewing the MPLAD36KP33CAE3 datasheet, MPLAD36KP33CAE3 pinout, MPLAD36KP33CAE3 application, or MPLAD36KP33CAE3 equivalent, key selection criteria include its bidirectional polarity, 1.0 °C/W junction-to-case thermal resistance, DO-160F Waveform 4 Level 4 compliance up to 300 V variants, IEC 61000-4-5 Class 5 secondary lightning capability (42 Ω source), and compatibility with FR4 PCB mounting per recommended pad layout.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector, leveraging avalanche breakdown to limit transient voltages across protected lines. Its bidirectional construction enables symmetrical suppression of both positive and negative transients without polarity sensitivity, making it suitable for AC-coupled or differential signal paths.
It meets RTCA DO-160F Section 22 multi-stroke lightning requirements and supports IEC 61000-4-2 ESD (±15 kV air/±8 kV contact), IEC 61000-4-4 EFT (40 A), and IEC 61000-4-5 surge immunity up to Class 5 - validated under 42 Ω, 12 Ω, and 2 Ω source impedances with defined voltage thresholds per variant group.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains single-stroke lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 33 V - maximum continuous operating voltage before conduction begins |
| Breakdown Voltage (V(BR)) | 36.7–40.6 V @ 5 mA - defines onset of avalanche clamping behavior |
| Max Clamping Voltage (VC) | 53.3 V @ 676 A - limits line voltage during worst-case surge event |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or copper pour |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack required prior to reflow |
| RoHS Compliance | e3 suffix - lead-free matte tin plating, compliant with EU Directive 2011/65/EU |
Pinout & Package
Package: PLAD (Plastic Low-profile Anode-down) - void-free UL94V-0 thermosetting epoxy body with metal base cathode termination; dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H); weight ≈ 1.7–2.0 g; terminals: annealed matte-tin (e3) plating solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface) | Transient current entry point (bidirectional) | Conducts surge current into device during either polarity excursion |
| Cathode (metal base) | Transient current return path | Serves as primary thermal interface and low-inductance ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables symmetric protection on AC lines or ungrounded differential buses without polarity constraints |
| DO-160F Waveform 4 Level 4 compliance | Withstands 6.4/69 μs pin-injection transients up to 300 V standoff variants - critical for aircraft data bus interfaces |
| IEC 61000-4-5 Class 5 rating (42 Ω source) | Validated for secondary lightning protection in long-distance wiring harnesses per EN 61000-4-5 Ed. 3 |
| Low RθJC = 1.0 °C/W | Supports high-repetition-rate surge events when mounted on thermally optimized PCB copper areas |
| AEC-Q101 qualified | Meets stress-test requirements for automotive electronics including temperature cycling and HTRB |
Applications
| Avionics Data Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting ARINC 429 or MIL-STD-1553 receivers from induced lightning transients in aircraft fuselage wiring. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across differential data pair inputs to limit common-mode surge voltage. Use Value: Ensures signal integrity during DO-160 Section 22 multi-stroke lightning tests without latch-up or parametric shift. | Use Scenario: Safeguarding engine control unit (ECU) power inputs against 12 V battery system load dump spikes (up to 120 V, 400 ms). IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 12 V supply rail upstream of DC/DC converters. Use Value: Limits voltage to ≤53.3 V during 676 A surge, preventing damage to downstream 3.3 V/5 V regulators and microcontrollers. |
| Industrial Motor Drive I/O Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding PLC analog input modules connected to 4–20 mA current loops exposed to switching transients from nearby VFDs. IC Role / Device Role / Timing Role: Bidirectional TVS across loop terminals to absorb coupled inductive kickback energy. Use Value: Maintains measurement accuracy by clamping transients within 100 ns, avoiding ADC saturation or sensor damage. | Use Scenario: Protecting track circuit receiver inputs in European railway signaling systems subject to EN 50121-4 surge coupling. IC Role / Device Role / Timing Role: Secondary surge limiter on 24 V DC signaling lines interfacing with outdoor axle counters. Use Value: Meets EN 50121-4 Class 3 immunity (2 Ω source, 1 kV) with clamping below 53.3 V, preserving fail-safe logic states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | 600 W PPP rating, SMC package, 10× lower peak power handling | Suitable only for low-energy ESD/EFT; not rated for DO-160 lightning or load dump | Select only for cost-sensitive consumer-grade designs with sub-100 A surge exposure |
| SMCJ33CA | 1500 W PPP, same SMC package footprint but 24× lower power than MPLAD36KP33CAE3 | Lacks DO-160F Waveform 4/5 validation and Class 5 IEC 61000-4-5 certification | Acceptable for industrial I/O where full lightning compliance is not mandated |
Compared with SMBJ33CA and SMCJ33CA, the MPLAD36KP33CAE3 provides 24–60× higher peak pulse power, certified multi-stroke lightning resilience, and validated performance under RTCA DO-160F and IEC 61000-4-5 test conditions - essential for safety-critical aerospace and automotive deployments requiring field-proven robustness.
Availability
MPLAD36KP33CAE3 is available at Aetrix Electronics and suitable for avionics interface protection, automotive ECU power rail hardening, and industrial motor drive I/O conditioning requiring stable component supply across extended production lifecycles.
Supply support for MPLAD36KP33CAE3 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) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened ICs for aerospace, defense, and industrial markets.
The MPLAD series was developed specifically for high-power, surface-mount transient suppression in mission-critical systems where DO-160, AEC-Q101, and IEC 61000-4-x compliance are mandatory design requirements.
FAQ
What is the clamping voltage of MPLAD36KP33CAE3 at its rated peak pulse current?
The MPLAD36KP33CAE3 has a maximum clamping voltage (VC) of 53.3 V at its rated peak pulse current (IPP) of 676 A under 10/1000 μs waveform conditions. This value is measured across the device terminals during standardized surge testing and ensures protected circuits remain below critical voltage thresholds during high-energy transients.
Is MPLAD36KP33CAE3 certified for RTCA DO-160F lightning testing?
Yes, the MPLAD36KP33CAE3 is validated for RTCA DO-160F Section 22 lightning-induced transient testing. Specifically, it meets Waveform 4 (6.4/69 μs) Level 4 up to 300 V variants and Waveform 5A (40/120 μs) Level 4 up to 78 V variants - with derating guidance provided in MicroNote 132 for elevated ambient temperatures.
Does MPLAD36KP33CAE3 require a heatsink for standard operation?
No external heatsink is required for single-pulse operation, as the MPLAD36KP33CAE3's 1.0 °C/W junction-to-case thermal resistance allows effective heat dissipation through the metal base into PCB copper pours. However, for repetitive surge duty cycles exceeding 0.05% duty factor, thermal design per Figure 3 derating curve and MicroNote 134 is recommended.
What does the 'CA' suffix indicate in MPLAD36KP33CAE3?
The 'CA' suffix in MPLAD36KP33CAE3 denotes bidirectional polarity - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. This contrasts with 'A' suffix variants, which are unidirectional and feature cathode-on-base polarity marking.
Can MPLAD36KP33CAE3 be used in automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD36KP33CAE3 is tested and qualified to AEC-Q101 standards for discrete semiconductors, covering stress tests such as high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST). This makes it suitable for under-hood and chassis-mounted automotive electronics subject to harsh environmental conditions.
MPLAD36KP33CAE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 676A
- 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
MPLAD36KP33CAE3 FAQ
1.How can I place an order for MPLAD36KP33CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP33CAE3 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 MPLAD36KP33CAE3 reliable?
The price and inventory of MPLAD36KP33CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP33CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP33CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP33CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP33CAE3?
MPLAD36KP33CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP33CAE3 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 MPLAD36KP33CAE3?
For technical support, including MPLAD36KP33CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP33CAE3 requirements.
6.How does Aetrix verify that MPLAD36KP33CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP33CAE3 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 MPLAD36KP33CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP33CAE3?
All MPLAD36KP33CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP33CAE3, 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 MPLAD36KP33CAE3 part is unused and in its original packaging.
Return procedure for MPLAD36KP33CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP33CAE3 Tags
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