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Microchip Technology MAPLAD36KP70CA
- Part No.:
- MAPLAD36KP70CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP70CA.pdf
- Description:
- TVS DIODE 70VWM 113VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,438
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Product details
Overview
MAPLAD36KP70CA 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, clamps at ≤113 V under 319 A peak impulse current, and features a 70 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (77.8–86.0 V). It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP70CA datasheet, MAPLAD36KP70CA pinout, MAPLAD36KP70CA application, or MAPLAD36KP70CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin injection immunity per RTCA/DO-160F Waveform 4 (Level 4 up to 400 V) and Waveform 5A (Level 4 up to 78 V), and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
This TVS diode operates as a voltage-clamping protector in parallel with sensitive circuitry, activating when transient voltage exceeds its VWM of 70 V and clamping to ≤113 V at 319 A. Its bidirectional construction enables symmetrical suppression of both positive and negative transients without polarity constraints.
Thermal design relies on low junction-to-case resistance (RθJC = 1.0 °C/W) and optimized FR4 pad layout to sustain repeated 36 kW surges at ≤0.05% duty factor. It supports MIL-PRF-19500 upscreening and achieves IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced surges per RTCA DO-160F Section 22 |
| Reverse Standoff Voltage (VWM) | 70 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (VBR) | 77.8–86.0 V @ 5 mA - ensures reliable turn-on margin above VWM |
| Max Clamping Voltage (VC) | ≤113 V @ 319 A - limits downstream voltage stress during worst-case surge |
| Peak Pulse Current (IPP) | 319 A @ 10/1000 μs - defines maximum surge current it can divert without failure |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or PCB copper for thermal reliability |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - zero floor life limitation; no baking required before reflow |
Pinout & Package
The MAPLAD36KP70CA uses a surface-mount PLAD package with two terminals: anode and cathode. The metal base serves as the cathode for unidirectional variants; for bidirectional devices like MAPLAD36KP70CA, both terminals are symmetrical and non-polarized. Package dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), with recommended pad layout per RF01216 Rev B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive polarity) | Accepts surge current during positive transients; connects to protected line |
| Cathode | Transient current return path (negative polarity) | Completes conduction path during negative transients; ties to reference plane |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC lines or differential buses without polarity concerns |
| AEC-Q101 qualification | Validates robustness for automotive powertrain and chassis applications under temperature cycling and humidity |
| RTCA DO-160F Section 22 compliance | Guarantees multi-stroke lightning survivability in avionics power and signal interfaces |
| IEC 61000-4-5 Class 4/5 support (42 Ω, 12 Ω, 2 Ω) | Meets stringent secondary lightning protection thresholds across multiple source impedances |
| RoHS-compliant matte-tin plating | Ensures solderability per MIL-STD-750 Method 2026 and compatibility with lead-free reflow profiles |
Applications
| Aerospace Avionics Power Input | Automotive DC Power Distribution |
|---|---|
Use Scenario: Protection of 28 V DC power inputs in flight control computers against lightning-induced surges per DO-160F Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed across input rails to clamp transients before they reach upstream DC/DC converters. Use Value: Sustains ≥319 A impulses at 10/1000 μs without degradation, enabling compliance with Level 4 pin injection (Waveform 4) and Class 4 secondary lightning (42 Ω). | Use Scenario: Load dump suppression on 24 V commercial vehicle ECUs where alternator regulation failure causes >120 V spikes. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor that activates within <100 ps to limit bus voltage to ≤113 V. Use Value: Withstands 36 kW surges while maintaining VWM = 70 V - higher than nominal 24 V system but safely below load dump peak, preventing false triggering. |
| Industrial Motor Drive Control Signals | Railway Signaling Interface Protection |
Use Scenario: Shielding encoder feedback lines in servo drives from inductive switching noise and ground bounce. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed at connector interface to shunt EFT bursts per IEC 61000-4-4 Level 4. Use Value: Clamps to ≤113 V within nanoseconds while exhibiting only 10 μA standby leakage at 70 V - preserving signal integrity in high-impedance analog paths. | Use Scenario: Protecting 70 V signaling circuits in European railway interlocking systems from induced surges during nearby lightning strikes. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), handling residual energy per IEC 61000-4-5 Class 3 (2 Ω source). Use Value: Matches system VWM requirement exactly (70 V), ensuring optimal coordination with upstream GDT and avoiding overvoltage stress on downstream optocouplers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70CA | Lower PPP (600 W), same VWM (70 V), smaller SMB package | Suitable for consumer-grade IEC 61000-4-5 Class 2/3, not certified for DO-160F or AEC-Q101 | Select when cost and board space constrain requirements, and aerospace/automotive qualification is unnecessary |
| SMCJ70CA | Higher PPP (1500 W), same VWM, larger SMC package, no AEC-Q101 or DO-160F data | Used in industrial power supplies requiring higher surge margin than SMBJ but less than 36 kW | Choose for general-purpose 70 V bidirectional protection where full aerospace qualification is not mandated |
Compared with SMBJ70CA and SMCJ70CA, MAPLAD36KP70CA delivers 24× and 24× higher peak pulse power respectively, while providing documented AEC-Q101 reliability, RTCA DO-160F Section 22 validation, and MIL-PRF-19500 upscreening capability - making it uniquely suited for safety-critical airborne and automotive power systems.
Availability
MAPLAD36KP70CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive power distribution, and industrial motor drive applications requiring stable component supply, long-term lifecycle assurance, and certified surge performance.
Supply support for MAPLAD36KP70CA 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 semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened ICs, timing solutions, and ruggedized discrete components.
The MAPLAD36KP70CA belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning protection in mission-critical platforms where failure is not an option.
FAQ
What is the clamping voltage of MAPLAD36KP70CA at its rated peak pulse current?
The MAPLAD36KP70CA exhibits a maximum clamping voltage (VC) of 113 V when subjected to its rated peak pulse current of 319 A under 10/1000 μs waveform conditions. This value is guaranteed per datasheet Figure 3 and ensures downstream circuitry remains within safe voltage limits during high-energy transients such as lightning-induced surges.
Is MAPLAD36KP70CA qualified for automotive applications?
Yes, MAPLAD36KP70CA is AEC-Q101 qualified, confirming its suitability for automotive powertrain and chassis applications. It undergoes stress testing including temperature cycling, humidity bias, and mechanical shock - validating reliability in harsh vehicular environments where load dump and ISO 7637-2 transients occur.
Does MAPLAD36KP70CA meet RTCA DO-160F lightning protection standards?
Yes, MAPLAD36KP70CA is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. It satisfies Level 4 pin injection immunity for Waveform 4 (6.4/69 μs) up to 400 V and supports Class 4/5 secondary lightning protection per IEC 61000-4-5 with 42 Ω, 12 Ω, and 2 Ω source impedances - critical for avionics certification.
What is the thermal resistance specification for MAPLAD36KP70CA?
MAPLAD36KP70CA has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, measured under controlled heatsink conditions. This low value enables effective heat dissipation during repetitive 36 kW surges, especially when mounted on FR4 with the recommended pad layout per RF01216 Rev B - essential for thermal stability in high-duty-cycle protection schemes.
How does the bidirectional construction of MAPLAD36KP70CA affect its circuit implementation?
The bidirectional construction of MAPLAD36KP70CA eliminates polarity constraints, allowing direct placement across AC-coupled lines, differential buses, or ungrounded signal pairs without orientation checks. Unlike unidirectional TVS diodes, MAPLAD36KP70CA provides symmetrical clamping for both positive and negative transients - simplifying layout and improving protection coverage in floating or bipolar systems.
MAPLAD36KP70CA 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):
- 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
MAPLAD36KP70CA FAQ
1.How can I place an order for MAPLAD36KP70CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP70CA 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 MAPLAD36KP70CA reliable?
The price and inventory of MAPLAD36KP70CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP70CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP70CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP70CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP70CA?
MAPLAD36KP70CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP70CA 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 MAPLAD36KP70CA?
For technical support, including MAPLAD36KP70CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP70CA requirements.
6.How does Aetrix verify that MAPLAD36KP70CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP70CA 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 MAPLAD36KP70CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP70CA?
All MAPLAD36KP70CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP70CA, 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 MAPLAD36KP70CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP70CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP70CA Tags
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