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Microchip Technology MAPLAD36KP70AE3
- Part No.:
- MAPLAD36KP70AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP70AE3.pdf
- Description:
- TVS DIODE 70VWM 113VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,732
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Product details
Overview
MAPLAD36KP70AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, clamps at ≤113 V under 319 A peak impulse current, and features a 70 V reverse standoff voltage (VWM), 77.8–86.0 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance.
For engineers reviewing the MAPLAD36KP70AE3 datasheet, MAPLAD36KP70AE3 pinout, MAPLAD36KP70AE3 application, or MAPLAD36KP70AE3 equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, 2 Ω source impedances), RTCA DO-160F Waveform 4 & 5A pin injection immunity, and automotive load dump suppression where low-profile SMT mounting and traceable high-reliability screening are required.
Technical Context
This TVS diode employs a silicon avalanche structure optimized for multi-stroke lightning transients and fast-rising ESD/EFT events. Its metal-base cathode construction enables direct thermal coupling to PCB copper or heatsinks, supporting sustained energy dissipation with RθJC = 1.0 °C/W and RθJA = 50 °C/W on FR4.
It meets AEC-Q101 stress testing requirements and supports MIL-PRF-19500 upscreening options. The device operates across –55 °C to +150 °C junction temperature and maintains <10 μA standby current (ID) at 70 V VWM, with ±84 mV/°C temperature coefficient of V(BR).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning strike energy without failure |
| Reverse Standoff Voltage (VWM) | 70 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 77.8–86.0 V @ 5 mA - defines precise avalanche onset threshold for predictable clamping |
| Clamping Voltage (VC) | ≤113 V @ 319 A IPP - limits downstream circuit voltage during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct heat transfer to PCB ground plane or heatsink for thermal stability |
| Standby Current (ID) | ≤10 μA @ 70 V - ensures negligible leakage in always-on power rails |
| Moisture Sensitivity Level | Level 1 (IPC/JEDEC J-STD-020B) - no dry pack or bake-out required prior to reflow |
Pinout & Package
MAPLAD36KP70AE3 uses a thermally enhanced surface-mount PLAD package with metal base cathode (pin 1). The package measures 12.32 × 10.54 × 5.08 mm (L × W × H) and features tin-lead or RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface) | Surge current entry point | Connected to protected line; avalanche conduction begins when line exceeds V(BR) |
| Cathode (metal base) | Surge current return path & thermal interface | Must be soldered to large copper area or heatsink for effective thermal management |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW surge rating | Validated for multi-stroke lightning per RTCA DO-160 Section 22, enabling single-device compliance in avionics |
| Metal-base thermal design | RθJC = 1.0 °C/W allows >70% of surge energy to dissipate directly into PCB copper, reducing thermal stress |
| AEC-Q101 qualified | Passes accelerated stress tests including HTGB, HTRB, and TCT - suitable for automotive powertrain and chassis systems |
| RoHS-compliant (e3) | Meets EU Directive 2011/65/EU with annealed matte-tin plating; compatible with lead-free reflow profiles |
| Traceable wafer & assembly lots | Full lot-level traceability supports AS9100 and ISO/TS 16949 production audits for aerospace and automotive OEMs |
Applications
| Aerospace Avionics Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting flight control sensor interfaces and ARINC 429 data lines against induced lightning currents in commercial aircraft. IC Role / Device Role / Timing Role: Primary secondary lightning protector per RTCA DO-160F Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). Use Value: Clamps transients to ≤113 V while surviving ≥1000A surges - eliminates need for cascaded protection stages. |
Use Scenario: Safeguarding engine control unit (ECU) power inputs during alternator load dump events in 24 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed at battery input rail to absorb 120 V/400 ms transients per ISO 7637-2 Pulse 5a. Use Value: Withstands 36 kW pulses without degradation - extends system reliability beyond 100,000 ignition cycles. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Shielding IGBT gate drivers and current sense amplifiers from switching-induced transients in variable-frequency drives. IC Role / Device Role / Timing Role: Fast-clamping TVS on DC bus supply rail to limit voltage overshoot during IGBT turn-off. Use Value: Sub-100 ns response time and 1.0 °C/W RθJC enable stable operation under repetitive 10 kHz switching surges. |
Use Scenario: Securing track circuit receivers and axle counter inputs against EFT and lightning-induced surges in EN 50121-4 compliant signaling systems. IC Role / Device Role / Timing Role: Secondary protector per IEC 61000-4-5 (Class 4, 42 Ω source) on 72 V signaling lines. Use Value: Validated clamping performance at 70 V VWM ensures compatibility with legacy 60–80 V nominal rail voltages. |
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 SMAJ70A | Lower PPP (400 W), smaller SMA package, RθJA = 110 °C/W, VWM = 70 V, VC = 115 V @ 34.6 A | Suitable for consumer/industrial boards with lower surge exposure; not rated for DO-160 or AEC-Q101 | Select when cost and board space are prioritized over aerospace-grade surge endurance and thermal robustness |
| Vishay SM8S70A | Higher PPP (6600 W), DO-218AB package, RθJA = 45 °C/W, VWM = 70 V, VC = 115 V @ 192 A | Validated for ISO 7637-2 and IEC 61000-4-5 Class 4, but not DO-160F Waveform 4/5A or AEC-Q101 | Choose for automotive body electronics requiring higher surge margin than SMAJ but less than MAPLAD36KP70AE3's 36 kW capability |
Compared with SMAJ70A and SM8S70A, MAPLAD36KP70AE3 provides 55× and 5.5× higher peak pulse power respectively, coupled with metal-base thermal management and full DO-160F/AEC-Q101 qualification - making it the only option for certified multi-stroke lightning protection in safety-critical platforms.
Availability
MAPLAD36KP70AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain systems, and industrial motor drive designs requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MAPLAD36KP70AE3 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 solutions for aerospace, defense, and industrial markets.
The MAPLAD series was developed specifically for high-energy transient suppression in mission-critical systems, emphasizing thermal robustness, multi-stroke survivability, and compliance with RTCA DO-160, AEC-Q101, and IEC 61000-4-x standards.
FAQ
What is the clamping voltage of MAPLAD36KP70AE3 under maximum surge conditions?
The MAPLAD36KP70AE3 has a maximum clamping voltage (VC) of 113 V at 319 A peak pulse current (IPP) under the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream ICs see voltage limited to safe levels during lightning or load dump events. The device achieves this with sub-100 ns response time and minimal voltage overshoot due to its low-inductance metal-base construction.
Is MAPLAD36KP70AE3 qualified for automotive applications?
Yes, MAPLAD36KP70AE3 is fully AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). It is designed for use in automotive powertrain, chassis, and body control modules where robust load dump and EFT protection are required. Its 70 V VWM aligns with 24 V system architectures, and its 36 kW rating exceeds ISO 7637-2 Pulse 5a requirements by a wide margin.
How does the metal base of MAPLAD36KP70AE3 improve thermal performance?
The metal base of MAPLAD36KP70AE3 serves as both the cathode terminal and primary thermal interface, delivering a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W. When soldered to a large copper pour or external heatsink, it transfers >70% of surge energy directly out of the die - preventing thermal runaway during repetitive transients. This is critical for applications like avionics DO-160 testing, where multi-stroke events demand consistent clamping performance without parameter drift.
Does MAPLAD36KP70AE3 meet RTCA DO-160F lightning protection requirements?
Yes, MAPLAD36KP70AE3 is explicitly validated for RTCA DO-160F Section 22 lightning-induced transient testing. It meets Waveform 4 (6.4/69 μs) Level 4 up to 400 V VWM and Waveform 5A (40/120 μs) Level 4 up to 78 V VWM. Its 36 kW rating and low clamping voltage ensure compliance with multi-stroke test sequences - a requirement for flight-critical systems in commercial aircraft certified under FAA AC 20-136A.
What is the moisture sensitivity level (MSL) and reflow profile for MAPLAD36KP70AE3?
MAPLAD36KP70AE3 is rated MSL Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and requires no dry pack or baking prior to reflow soldering. It supports standard lead-free reflow profiles with peak temperatures up to 260 °C for 10 seconds. The RoHS-compliant (e3) matte-tin plating ensures reliable wetting and intermetallic formation during both SnPb and Pb-free processes.
MAPLAD36KP70AE3 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):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 319A
- 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
MAPLAD36KP70AE3 FAQ
1.How can I place an order for MAPLAD36KP70AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP70AE3 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 MAPLAD36KP70AE3 reliable?
The price and inventory of MAPLAD36KP70AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP70AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP70AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP70AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP70AE3?
MAPLAD36KP70AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP70AE3 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 MAPLAD36KP70AE3?
For technical support, including MAPLAD36KP70AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP70AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP70AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP70AE3 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 MAPLAD36KP70AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP70AE3?
All MAPLAD36KP70AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP70AE3, 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 MAPLAD36KP70AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP70AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP70AE3 Tags
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