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Microchip Technology MAPLAD36KP160A
- Part No.:
- MAPLAD36KP160A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP160A.pdf
- Description:
- TVS DIODE 160VWM 259VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,041
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Product details
Overview
MAPLAD36KP160A 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 transients to ≤259 V at 10 A IPP, and features a 160 V reverse standoff voltage (VWM) with 178–197 V breakdown range (V(BR)). It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP160A datasheet, MAPLAD36KP160A pinout, MAPLAD36KP160A application, or MAPLAD36KP160A 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 protection per RTCA/DO-160F Waveform 4 & 5A, and ESD/EFT compliance per IEC 61000-4-2/4-4 - all in a low-profile PLAD package with metal-base cathode thermal path.
Technical Context
The MAPLAD36KP160A uses an avalanche diode structure optimized for fast response (<5 ns clamping time) and high cumulative energy handling. Its metal-base construction provides 1.0 °C/W junction-to-case thermal resistance, enabling effective heat dissipation when mounted on FR4 with recommended pad layout.
It operates across –55°C to +150°C junction temperature, supports steady-state power dissipation of 2.5 W at 25°C ambient (71 W at 100°C case), and exhibits a ±195 mV/°C temperature coefficient of breakdown voltage - critical for stable clamping under thermal stress in avionics and engine bay environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - enables single-device protection against severe lightning-induced surges per DO-160F Level 4/5 and IEC 61000-4-5 Class 4/5. |
| Reverse Standoff Voltage (VWM) | 160 V - sets maximum continuous operating voltage; must exceed system DC bus or signal rail peak voltage to avoid leakage or false triggering. |
| Breakdown Voltage (V(BR)) | 178–197 V @ 5 mA - defines minimum clamping onset threshold; ensures reliable conduction before downstream circuit damage occurs. |
| Max Clamping Voltage (VC) | 259 V @ 10 A IPP - actual voltage seen by protected circuit during surge; determines margin above VWM for safe operation. |
| Standby Current (ID) | 10 μA @ 160 V - ultra-low leakage preserves battery life and avoids false trips in always-on avionics subsystems. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows direct thermal coupling to heatsink or PCB copper pour, essential for repeated surge duty cycles. |
| Clamping Response Time | <5 ns - ensures sub-nanosecond turn-on for fast-rising transients like ESD and inductive switching spikes. |
Pinout & Package
MAPLAD36KP160A uses the PLAD (Plastic Low-Profile Anode-Cathode) surface-mount package with metal base acting as cathode terminal. The package measures 12.32 × 10.54 × 5.08 mm (L × W × H) and features tin-lead or RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface pad) | Transient current entry point | Connected to line/rail requiring protection; current flows into device during positive surge event. |
| Cathode (metal base underside) | Transient current return path & thermal interface | Must be soldered to large copper area or heatsink; serves dual role as electrical terminal and primary heat sink interface. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW peak pulse rating | Enables single-device compliance with RTCA DO-160 Section 22 multi-stroke lightning tests without parallel stacking. |
| Metal-base thermal path (RθJC = 1.0 °C/W) | Reduces thermal bottleneck vs. standard SMD TVS, supporting >1000 surge cycles at 0.05% duty factor on FR4. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain and chassis applications where extended temperature cycling and vibration are present. |
| RoHS-compliant (e3 marking) and IPC/JEDEC J-STD-020B Level 1 moisture sensitivity | Eliminates dry-pack requirement and reflow compatibility issues in high-volume SMT assembly lines. |
| Traceable wafer and assembly lot control | Supports full lot traceability for aerospace programs requiring AS9100-compliant documentation and failure analysis. |
Applications
| Aircraft Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power input to flight management computers and inertial navigation units exposed to lightning-induced surges per DO-160F Section 22. IC Role / Device Role / Timing Role: Primary secondary surge clamp on main power rail, placed upstream of DC-DC converters and LDOs. Use Value: Withstands ≥1000 multi-stroke lightning events at 42 Ω source impedance while maintaining <259 V clamping - preserving downstream ICs rated to 30 V absolute max. |
Use Scenario: Protection of 12 V/24 V supply rails in diesel engine ECUs subjected to load dump transients up to 120 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed at battery input connector to absorb energy before it reaches microcontroller power domains. Use Value: 36 kW rating handles 120 V/350 A load dump pulses without degradation; 160 V VWM provides 33% margin over nominal 24 V system, avoiding false conduction during cranking. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Surge suppression on 300–400 V DC bus of variable-frequency drives exposed to switching transients and induced RFI from adjacent IGBTs. IC Role / Device Role / Timing Role: High-energy clamp across DC link capacitors to limit voltage overshoot during regenerative braking or fault clearing. Use Value: 259 V clamping at 10 A IPP ensures bus voltage stays below 450 V rating of 450 V electrolytic capacitors - extending capacitor lifetime and preventing catastrophic failure. |
Use Scenario: Protection of 110 V DC signaling lines in European railway interlocking systems subject to IEC 61000-4-5 Class 4 surges (4 kV, 2 Ω source). IC Role / Device Role / Timing Role: Bidirectional-capable variant (MAPLAD36KP160CA) used on differential signaling pairs; unidirectional version applied to power-supply side of optocoupler isolators. Use Value: 160 V VWM aligns with EN 50121-3-2 immunity thresholds; 195 mV/°C αV(BR) ensures clamping stability across –40°C to +70°C trackside temperature range. |
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 SMAJ160A | Lower PPP rating (400 W), smaller SMA package, 1.0 °C/W RθJC not specified, no AEC-Q101 or DO-160 qualification. | Suitable for consumer-grade industrial controls but lacks multi-stroke lightning validation and automotive qualification. | Select only for cost-sensitive, non-safety-critical 160 V rail protection where surge repetition is infrequent and energy is ≤500 W. |
| Vishay SM8S160A | Higher PPP (6600 W), DO-160 tested but not certified to Section 22 multi-stroke; RθJC = 1.5 °C/W; AEC-Q101 qualified. | Meets basic automotive load dump but cannot replace MAPLAD36KP160A in aircraft DO-160F Level 5 testing or high-cycle industrial motor drive applications. | Use where 6.6 kW suffices and thermal budget allows 0.5 °C/W higher junction rise; verify waveform-specific clamping with test lab. |
Compared with SMAJ160A and SM8S160A, MAPLAD36KP160A uniquely combines 36 kW pulse capability, metal-base thermal performance, DO-160F Section 22 certification, and full lot traceability - making it irreplaceable in aerospace prime contractor BOMs and high-reliability automotive power modules requiring validated multi-stroke endurance.
Availability
MAPLAD36KP160A is available at Aetrix Electronics and suitable for aircraft avionics, automotive engine control units, and industrial motor drive systems requiring stable component supply, long-term lifecycle support, and full traceability.
Supply support for MAPLAD36KP160A 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP160A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for mission-critical surge protection in environments demanding DO-160, AEC-Q101, and IEC 61000-4-5 compliance - with emphasis on thermal robustness and multi-event survivability.
FAQ
What is the clamping voltage of MAPLAD36KP160A at its rated peak pulse current?
The MAPLAD36KP160A has a maximum clamping voltage (VC) of 259 V at 10 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is MAPLAD36KP160A qualified for automotive applications?
Yes, MAPLAD36KP160A is fully qualified to AEC-Q101 for stress testing including temperature cycling, humidity bias, and mechanical shock. It is widely deployed in automotive engine control units and battery management systems for load dump and ESD protection, with documented performance across –40°C to +125°C operating range and validated surge endurance per ISO 7637-2.
How does the metal base of MAPLAD36KP160A affect thermal design?
The metal base of MAPLAD36KP160A serves as both the cathode terminal and primary thermal interface, delivering a low 1.0 °C/W junction-to-case thermal resistance. When soldered to a ≥10 cm² copper pour or external heatsink, it enables sustained operation at 71 W steady-state power at 100°C case temperature - a key advantage over plastic-body TVS diodes with RθJC > 3.0 °C/W.
Can MAPLAD36KP160A be used for bidirectional surge protection?
No - MAPLAD36KP160A is unidirectional. For bidirectional protection at 160 V standoff, the correct variant is MAPLAD36KP160CA (with CA suffix). The "CA" designation indicates symmetrical breakdown in both polarities and is required for AC-coupled signal lines or floating DC rails where negative-going transients must also be suppressed.
What packaging options are available for MAPLAD36KP160A?
MAPLAD36KP160A is available in bulk and tape-and-reel formats. Tape-and-reel packaging follows EIA-481-B standards and requires adding the "TR" suffix (e.g., MAPLAD36KP160ATR); custom reel quantities and orientation are coordinated directly with Aetrix Electronics' supply chain team for automated SMT placement compatibility.
MAPLAD36KP160A 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):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 139A
- 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
MAPLAD36KP160A FAQ
1.How can I place an order for MAPLAD36KP160A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP160A 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 MAPLAD36KP160A reliable?
The price and inventory of MAPLAD36KP160A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP160A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP160A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP160A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP160A?
MAPLAD36KP160A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP160A 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 MAPLAD36KP160A?
For technical support, including MAPLAD36KP160A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP160A requirements.
6.How does Aetrix verify that MAPLAD36KP160A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP160A 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 MAPLAD36KP160A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP160A?
All MAPLAD36KP160A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP160A, 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 MAPLAD36KP160A part is unused and in its original packaging.
Return procedure for MAPLAD36KP160A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP160A Tags
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