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Microchip Technology MAPLAD36KP16A
- Part No.:
- MAPLAD36KP16A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP16A.pdf
- Description:
- TVS DIODE 16VWM 27.2VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,490
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Product details
Overview
MAPLAD36KP16A from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive power systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 16 V reverse standoff voltage (VWM), clamps to ≤27.2 V at 1324 A peak impulse current, and operates across –55°C to +150°C junction temperature. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP16A datasheet, MAPLAD36KP16A pinout, MAPLAD36KP16A application, or MAPLAD36KP16A equivalent, this device is selected for high-reliability DC bus protection where low clamping voltage, fast response (<100 ps), and thermal robustness (RθJC = 1.0°C/W) are critical - especially in aircraft avionics power inputs and automotive load-dump circuits.
Technical Context
The MAPLAD36KP16A employs an avalanche diode structure optimized for high-power transient suppression with minimal thermal resistance. Its metal-base package enables direct heat sinking, supporting sustained surge handling under ≤0.05% duty cycle per IEC 61000-4-5 and RTCA DO-160F Waveform 4/5A testing.
It is rated for secondary lightning protection per IEC 61000-4-5 with 42 Ω, 12 Ω, and 2 Ω source impedances across Class 1–5, and provides ESD immunity per IEC 61000-4-2 (±30 kV contact) and EFT per IEC 61000-4-4 (40 A). Standby leakage ID is ≤450 μA at 16 V VWM.
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) | 16 V - maximum continuous DC operating voltage before conduction begins |
| Clamping Voltage (VC) | ≤27.2 V @ IPP = 1324 A - limits downstream voltage stress during worst-case transients |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or heatsink for repeated surge events |
| Breakdown Voltage (V(BR)) | 17.8–19.7 V @ 5 mA - defines precise avalanche onset threshold for predictable triggering |
| Standby Current (ID) | ≤450 μA @ 16 V - ensures negligible power loss in standby operation |
| Response Time | <100 ps - suppresses fast-rising transients before sensitive circuitry reacts |
Pinout & Package
MAPLAD36KP16A uses a thermally enhanced surface-mount PLAD package with metal base acting as cathode terminal. The package measures 12.32 × 10.54 × 5.08 mm (L × W × H) and features void-free UL94V-0 epoxy molding and matte-tin plating compliant with MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface pad) | Transient current entry point | Connected to protected line; carries full surge current into avalanche junction |
| Cathode (metal base) | Current return path & thermal interface | Serves as both electrical return and primary heat sink interface - must be soldered to large copper area |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood environments including thermal cycling, humidity, and mechanical shock |
| RTCA DO-160F Section 22 compliance | Passes multi-stroke lightning test (Waveform 4 & 5A) up to Level 5 for aircraft power inputs |
| Low-profile SMT package with metal base | Enables high-density layout while delivering 1.0°C/W thermal resistance - no through-hole mounting required |
| RoHS-compliant (e3 marking) | Meets EU Directive 2011/65/EU with annealed matte-tin plating and lead-free assembly compatibility |
| Surge-tested per lot | Every production lot verified to 1000 A impulse (equipment-limited), ensuring consistent high-energy capability |
Applications
| Aircraft Power Input Protection | Automotive Load-Dump Suppression |
|---|---|
Use Scenario: 28 V DC power input on flight control computers exposed to lightning-induced surges per DO-160F Section 22. IC Role / Device Role / Timing Role: Primary TVS clamp protecting upstream DC-DC converters and microcontrollers from multi-stroke transients. Use Value: Clamps to ≤27.2 V within <100 ps, limiting stress on 30 V-rated input stages while surviving ≥1000 surges at 1324 A. | Use Scenario: 12 V battery-fed engine control unit subjected to ISO 7637-2 Pulse 5a (load dump) up to 60 V/100 ms. IC Role / Device Role / Timing Role: Unidirectional surge shunt placed directly across battery rail to clamp overvoltage before it reaches LDOs and MCUs. Use Value: Absorbs 36 kW peak energy without degradation, with VWM = 16 V ensuring no conduction during normal 14.4 V alternator operation. |
| Industrial DC Bus Protection | Rail-Side ESD/EFT Hardening |
Use Scenario: 24 V industrial PLC backplane powered by switching supplies subject to switching transients and induced RFI. IC Role / Device Role / Timing Role: High-power TVS placed at main DC input connector to protect entire bus from external surge coupling. Use Value: With RθJC = 1.0°C/W and 36 kW rating, handles repetitive 10/1000 μs transients at 0.05% duty cycle without thermal runaway. | Use Scenario: Field I/O module with exposed terminals requiring IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity up to Level 4. IC Role / Device Role / Timing Role: Front-line transient suppressor on signal/power lines entering enclosure, paired with series impedance. Use Value: Provides ±30 kV contact ESD clamping and 40 A burst current suppression while maintaining <450 μA leakage at 16 V system voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | 600 W PPP rating, 16 V VWM, DO-214AA package, RθJC ≈ 40°C/W | Lower energy handling; suitable only for single-event, low-duty-cycle transients in consumer-grade equipment | Select SMBJ16A only when surge energy is <10% of MAPLAD36KP16A's capacity and thermal mass is limited |
| SMCJ16A | 1500 W PPP rating, 16 V VWM, DO-214AB package, RθJC ≈ 15°C/W | Lacks AEC-Q101 qualification and RTCA DO-160F validation; not rated for multi-stroke lightning | Use SMCJ16A for cost-sensitive industrial controls where DO-160F compliance is not required |
Compared with SMBJ16A and SMCJ16A, MAPLAD36KP16A delivers 24× and 24× higher peak pulse power respectively, with certified aerospace-grade reliability, metal-base thermal performance, and validated multi-stroke lightning endurance - making it irreplaceable in safety-critical avionics and high-end automotive ECUs.
Availability
MAPLAD36KP16A is available at Aetrix Electronics and suitable for aircraft power input protection, automotive load-dump suppression, and industrial DC bus protection requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP16A 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 semiconductor solutions for aerospace, defense, and industrial markets, with emphasis on radiation-hardened ICs, timing devices, and power protection components.
The MAPLAD36KP16A belongs to Microsemi's high-power PLAD TVS family, engineered specifically for mission-critical surge suppression in environments demanding AEC-Q101 qualification, RTCA DO-160F compliance, and repeatable 36 kW transient absorption.
FAQ
What is the maximum clamping voltage of MAPLAD36KP16A at its rated peak pulse current?
The MAPLAD36KP16A has a maximum clamping voltage (VC) of 27.2 V at its peak impulse current (IPP) of 1324 A under 10/1000 μs waveform conditions. This value is guaranteed per datasheet Figure 3 and ensures downstream 30 V-rated components remain within safe operating limits during surge events. The low clamping ratio (VC/VWM ≈ 1.7) reflects optimized avalanche junction design in the MAPLAD36KP16A.
Is MAPLAD36KP16A qualified for automotive underhood applications?
Yes, MAPLAD36KP16A is AEC-Q101 qualified for automotive applications, including underhood environments. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-current surge - all verified per AEC-Q101 Rev D. Its –55°C to +150°C operating range and 1.0°C/W thermal resistance make MAPLAD36KP16A suitable for engine control units and battery management systems exposed to extreme thermal transients.
How does the metal base of MAPLAD36KP16A function electrically and thermally?
The metal base of MAPLAD36KP16A serves as the cathode terminal and primary thermal interface. Electrically, it completes the surge current path from anode to ground reference. Thermally, it provides a low-resistance conduction path (RθJC = 1.0°C/W) to PCB copper or external heatsinks - requiring soldering to ≥1000 mm² of 2 oz copper for optimal performance. This dual-role design is integral to MAPLAD36KP16A's ability to sustain repeated 36 kW pulses.
Can MAPLAD36KP16A be used for bidirectional transient protection?
No, MAPLAD36KP16A is a unidirectional TVS device. Its polarity is fixed: anode on top surface, cathode on metal base. For bidirectional protection at 16 V standoff, the correct variant is MAPLAD36KP16CA ('CA' suffix denotes bidirectional construction). Using MAPLAD36KP16A in AC or floating-bus applications risks reverse breakdown and permanent damage - always verify polarity alignment before integrating MAPLAD36KP16A.
What is the moisture sensitivity level (MSL) and reflow profile for MAPLAD36KP16A?
MAPLAD36KP16A has IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1 - meaning it is not moisture-sensitive and requires no dry pack or baking prior to reflow. It supports standard lead-free reflow profiles with peak temperature up to 260°C for 10 seconds. The RoHS-compliant (e3) matte-tin plating ensures reliable wetting and intermetallic formation during soldering, as confirmed in MAPLAD36KP16A packaging documentation.
MAPLAD36KP16A 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 27.2V
- Current - Peak Pulse (10/1000µs):
- 1324A (1.324kA)
- 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
MAPLAD36KP16A FAQ
1.How can I place an order for MAPLAD36KP16A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP16A 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 MAPLAD36KP16A reliable?
The price and inventory of MAPLAD36KP16A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP16A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP16A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP16A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP16A?
MAPLAD36KP16A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP16A 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 MAPLAD36KP16A?
For technical support, including MAPLAD36KP16A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP16A requirements.
6.How does Aetrix verify that MAPLAD36KP16A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP16A 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 MAPLAD36KP16A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP16A?
All MAPLAD36KP16A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP16A, 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 MAPLAD36KP16A part is unused and in its original packaging.
Return procedure for MAPLAD36KP16A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP16A Tags
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