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Microchip Technology MAPLAD36KP30CAE3
- Part No.:
- MAPLAD36KP30CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP30CAE3.pdf
- Description:
- TVS DIODE 30VWM 48.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,276
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Product details
Overview
MAPLAD36KP30CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 30 V reverse standoff voltage (VWM), clamps to ≤48.8 V at 738 A peak impulse current, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP30CAE3 datasheet, MAPLAD36KP30CAE3 pinout, MAPLAD36KP30CAE3 application, or MAPLAD36KP30CAE3 equivalent, key selection criteria include bidirectional polarity, 30 V working voltage rating, low thermal resistance (RθJC = 1.0 °C/W), RoHS-compliant e3 termination, and IEC 61000-4-5 Class 5 secondary lightning protection capability with 42 Ω source impedance.
Technical Context
This TVS diode operates as a voltage-clamping protection device in parallel with sensitive circuitry, activating when transient voltages exceed its breakdown threshold (V(BR) = 33.3–36.8 V). Its metal-base package enables direct thermal coupling to PCB copper or heatsinks, supporting high-reliability operation under repeated surges up to 0.05% duty cycle.
It complies with AEC-Q101 stress testing and supports multiple IEC 61000-4-5 immunity classes depending on source impedance - including Class 5 at 42 Ω (short-distance) and Class 4 at 12 Ω - while also meeting RTCA DO-160F Waveform 4 Level 4 and Waveform 5A Level 4 pin-injection requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning transients without failure |
| Reverse Standoff Voltage (VWM) | 30 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 33.3–36.8 V @ 5 mA - defines precise turn-on threshold for overvoltage response |
| Max Clamping Voltage (VC) | 48.8 V @ 738 A - limits downstream voltage stress during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or external heatsink |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry-pack required, simplifies SMT handling and storage |
| RoHS Compliance | e3 marking - matte-tin plating, lead-free, compliant with EU Directive 2011/65/EU |
Pinout & Package
MAPLAD36KP30CAE3 uses a thermally enhanced PLAD surface-mount package with metal base acting as cathode terminal. The device has two terminals: anode (top-side metallization) and cathode (exposed metal base), enabling low-inductance mounting directly to large copper pour areas for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal for bidirectional conduction path | Connected to protected line; forms symmetrical clamping path with cathode during both polarity transients |
| Cathode | Negative terminal / thermal interface | Exposed metal base - must be soldered to ≥100 mm² copper area for RθJC = 1.0 °C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Protects AC-coupled or floating signal lines against ±polarity transients without polarity sensitivity |
| RTCA DO-160 Section 22 compliance | Validated for multi-stroke lightning testing - critical for avionics power and data bus protection |
| AEC-Q101 qualified | Passes automotive-grade reliability stress tests including HTGB, HTRB, and temperature cycling |
| Low-profile void-free epoxy case | UL94V-0 rated body with controlled mold flow - ensures mechanical robustness and flame resistance |
| Traceable wafer and assembly lots | Enables full lot-level failure analysis and field return correlation for high-reliability programs |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC power bus in commercial aircraft avionics bays exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary transient suppression device placed at bus entry point ahead of DC-DC converters and PMICs. Use Value: Limits clamped voltage to 48.8 V during 36 kW transients, preventing damage to downstream 50 V-rated components per DO-160F Section 22. | Use Scenario: 12 V battery-fed ECU power input subjected to ISO 7637-2 Load Dump pulses up to 120 V. IC Role / Device Role / Timing Role: Bidirectional clamp protecting microcontroller power rails and CAN transceivers from reverse-polarity and overvoltage events. Use Value: Withstands 738 A peak current at 30 V standoff, ensuring system survival during 120 V/100 ms load dump without crowbar action or latch-up. |
| Industrial Motor Drive Control | Railway Signaling Interface |
Use Scenario: 24 V control logic inputs on variable-frequency drives exposed to inductive switching noise and ground bounce. IC Role / Device Role / Timing Role: Fast-response TVS placed at connector interface to shunt EFT bursts and RFI-coupled transients. Use Value: Sub-100 ps response time and 48.8 V clamping prevent false triggering of digital inputs and latch-up in isolated gate drivers. | Use Scenario: 30 V signaling lines between trackside electronics and centralized interlocking systems subject to induced lightning surges. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing low-clamp precision after coarse front-end suppression. Use Value: Meets IEC 61000-4-5 Class 4 with 2 Ω source impedance (up to 130 V VWM), enabling interoperability with legacy signaling standards. |
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, 33 V VWM, DO-214AA package, RθJC ≈ 35 °C/W | Limited to single-stroke surges; unsuitable for DO-160 multi-stroke or repeated automotive load dump | Select only for cost-sensitive industrial controls with <5 kA surge exposure and no aerospace qualification needs |
| SMCJ33CA | 1500 W PPP rating, 33 V VWM, DO-214AB package, RθJC ≈ 15 °C/W | Cannot meet 36 kW energy absorption or DO-160F Waveform 4 Level 4 without derating or parallel staging | Consider for mid-tier automotive modules where 36 kW is excessive but AEC-Q101 and 33 V standoff remain essential |
Compared with SMBJ33CA and SMCJ33CA, MAPLAD36KP30CAE3 provides 24× and 24× higher peak pulse power respectively, enables direct PCB thermal management via metal base, and is uniquely qualified for RTCA DO-160F multi-stroke lightning - making it irreplaceable in certified avionics and high-end automotive power systems.
Availability
MAPLAD36KP30CAE3 is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive control requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD36KP30CAE3 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 PLAD series was developed specifically for high-energy transient suppression in safety-critical platforms where standard TVS devices fail - emphasizing thermal robustness, multi-stroke endurance, and qualification-grade traceability.
FAQ
What is the clamping voltage of MAPLAD36KP30CAE3 at its rated peak pulse current?
The MAPLAD36KP30CAE3 exhibits a maximum clamping voltage (VC) of 48.8 V when subjected to its rated peak impulse current of 738 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and ensures downstream components rated for 50 V operation remain within safe voltage margins during surge events.
Does MAPLAD36KP30CAE3 require a heatsink for standard operation?
No external heatsink is required for MAPLAD36KP30CAE3 under single-pulse or low-duty-cycle conditions. Its 1.0 °C/W junction-to-case thermal resistance is achieved by soldering the exposed metal cathode base to ≥100 mm² of 2 oz copper on FR4, which serves as the primary thermal path - eliminating need for mechanical heatsinks in most avionics and automotive implementations.
Is MAPLAD36KP30CAE3 qualified for automotive applications?
Yes, MAPLAD36KP30CAE3 is AEC-Q101 qualified and explicitly validated for automotive load dump protection per ISO 7637-2. Its bidirectional construction, 30 V standoff, and 738 A peak current rating make it suitable for 12 V and 24 V ECU power rail protection, especially in engine control and ADAS modules requiring high-reliability surge immunity.
How does the CA suffix in MAPLAD36KP30CAE3 affect its functionality?
The "CA" suffix in MAPLAD36KP30CAE3 denotes bidirectional polarity - meaning the device provides symmetrical clamping for both positive and negative transients without requiring orientation during placement. This contrasts with unidirectional "A" variants, which have polarity-dependent anode/cathode configuration and only clamp in one direction unless used in back-to-back pairs.
What packaging options are available for MAPLAD36KP30CAE3?
MAPLAD36KP30CAE3 is supplied in bulk or custom tape-and-reel formats per EIA-481-B. The "TR" suffix may be added to the part number for tape-and-reel ordering. Standard packaging includes RoHS-compliant e3 matte-tin plating, void-free UL94V-0 epoxy body, and laser-marked part identification on the top surface - all verified per MIL-STD-750 test methods.
MAPLAD36KP30CAE3 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.8V
- Current - Peak Pulse (10/1000µs):
- 738A
- 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
MAPLAD36KP30CAE3 FAQ
1.How can I place an order for MAPLAD36KP30CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP30CAE3 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 MAPLAD36KP30CAE3 reliable?
The price and inventory of MAPLAD36KP30CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP30CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP30CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP30CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP30CAE3?
MAPLAD36KP30CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP30CAE3 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 MAPLAD36KP30CAE3?
For technical support, including MAPLAD36KP30CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP30CAE3 requirements.
6.How does Aetrix verify that MAPLAD36KP30CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP30CAE3 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 MAPLAD36KP30CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP30CAE3?
All MAPLAD36KP30CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP30CAE3, 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 MAPLAD36KP30CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP30CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP30CAE3 Tags
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onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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