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Microchip Technology MAPLAD36KP54A
- Part No.:
- MAPLAD36KP54A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP54A.pdf
- Description:
- TVS DIODE 54VWM 87.1VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,019
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Product details
Overview
MAPLAD36KP54A 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 ≤87.1 V at 414 A, and operates with 54 V reverse standoff voltage (VWM). It meets RTCA DO-160 Section 22 multi-stroke lightning requirements and IEC 61000-4-5 Class 4 secondary lightning protection (42 Ω source).
For engineers reviewing the MAPLAD36KP54A datasheet, MAPLAD36KP54A pinout, MAPLAD36KP54A application, or MAPLAD36KP54A equivalent, this device is selected for high-reliability DC bus protection where precise VWM matching, low thermal resistance (RθJC = 1.0 °C/W), and verified surge robustness under repetitive transients are critical.
Technical Context
The MAPLAD36KP54A employs an avalanche diode structure optimized for fast response (<100 ps rise time) and stable clamping under high-current transients. Its metal-base package enables direct thermal coupling to heatsinks, supporting sustained operation at TC = 100°C with 71 W steady-state dissipation capability.
It is rated per AEC-Q101 and supports MIL-PRF-19500 upscreening options. Electrical behavior is defined by breakdown voltage V(BR) = 60.0–66.3 V at 5 mA, clamping voltage VC = 87.1 V max at IPP = 414 A, and standby current ID ≤ 10 μA at VWM = 54 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous DC or peak AC voltage the device blocks without conduction. |
| V(BR) min/max | 60.0–66.3 V @ 5 mA - Ensures reliable avalanche initiation above system operating voltage with margin. |
| VC @ IPP | 87.1 V max @ 414 A - Limits downstream voltage stress during worst-case 10/1000 μs surge events. |
| PPP | 36,000 W @ 10/1000 μs - Sustains single-stroke lightning-induced surges without failure. |
| RθJC | 1.0 °C/W - Enables efficient heat transfer to external heatsink, critical for multi-pulse reliability. |
| ID @ VWM | ≤10 μA - Minimizes leakage impact on high-impedance sensing or bias networks. |
| TJ range | −55 to +150 °C - Supports operation in extended-temperature avionics and engine bay environments. |
Pinout & Package
MAPLAD36KP54A uses a void-free transfer-molded thermosetting epoxy PLAD package with metal base (cathode) and two solderable terminals. Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ≈ 1.7–2.0 g. Cathode is the metal base underside; anode is top-side metallization.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top-side metallization) | Positive terminal for unidirectional conduction path | Connected to protected line; conducts only when line voltage exceeds cathode potential by ≥V(BR). |
| Cathode (metal base) | Reference/ground terminal; primary thermal interface | Must be soldered to copper pour or heatsink for RθJC = 1.0 °C/W performance; defines polarity orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT package with metal base | Enables PCB-level thermal management without discrete heatsinks while maintaining 36 kW surge rating. |
| RTCA DO-160 Section 22 compliance | Validated for multi-stroke lightning testing-critical for aircraft power distribution and flight control electronics. |
| AEC-Q101 qualified | Meets automotive-grade reliability standards including temperature cycling, humidity bias, and surge endurance. |
| IEC 61000-4-5 Class 4 support (42 Ω source) | Protects against induced surges in industrial and transportation infrastructure with defined impedance matching. |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring lot traceability, 3σ ID screening, and conformance inspection. |
Applications
| Aircraft Power Distribution Units | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus inputs in airborne power converters subjected to lightning-induced transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary clamping device placed at board edge to shunt surge energy before it reaches DC-DC controllers and FET drivers. Use Value: Clamps 414 A surges to ≤87.1 V, preserving downstream silicon rated for <100 V absolute maximum ratings. | Use Scenario: Safeguarding infotainment head units during alternator load dump events in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS connected between battery rail and ground, absorbing 120 V/400 ms transients without degradation. Use Value: Withstands >1000 surge cycles at 80% PPP rating-ensuring longevity across vehicle lifetime. |
| Industrial Motor Drive DC Links | Railway Signaling Power Inputs |
Use Scenario: Shielding 48–60 V DC link stages in variable-frequency drives from switching-induced voltage spikes and EFT noise. IC Role / Device Role / Timing Role: Fast-response clamping element placed across bulk capacitor terminals to limit overvoltage during IGBT turn-off. Use Value: Sub-100 ps response ensures clamping activation before MOSFET/IGBT avalanche limits are exceeded. | Use Scenario: Securing 54 V nominal signaling power supplies in trackside electronic interlocking systems exposed to induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Secondary protection stage after upstream MOVs, providing precise VWM alignment and low-leakage holdoff. Use Value: 10 μA ID at 54 V prevents false triggering in high-impedance monitoring circuits while enabling clean clamping at 87.1 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A | 600 W PPP rating, SMB package, RθJC ≈ 15 °C/W, VWM = 54 V, VC = 87.1 V @ 6.5 A | Lower energy handling; suitable only for single-event ESD/EFT, not multi-stroke lightning or load dump. | Select SMBJ54A only for cost-sensitive consumer applications with sub-1 kA surge exposure. |
| SMCJ54A | 1500 W PPP rating, SMC package, RθJC ≈ 3.5 °C/W, VWM = 54 V, VC = 93.6 V @ 160 A | Lacks DO-160 validation and AEC-Q101 qualification; limited to industrial-grade surge suppression. | Choose SMCJ54A for non-aviation industrial controls where full 36 kW rating is unnecessary but higher robustness than SMB is required. |
Compared with SMBJ54A and SMCJ54A, the MAPLAD36KP54A provides 24× and 24× higher peak pulse power respectively, validated multi-stroke lightning endurance, and metal-base thermal design enabling direct heatsink mounting-making it uniquely suited for mission-critical aerospace and heavy-duty automotive protection.
Availability
MAPLAD36KP54A is available at Aetrix Electronics and suitable for aircraft power distribution, automotive load dump protection, and industrial motor drive DC link applications requiring stable component supply, long-term lifecycle assurance, and certified surge robustness.
Supply support for MAPLAD36KP54A 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, communications, and industrial markets, with emphasis on radiation-hardened ICs, timing devices, and power protection components.
The MAPLAD36KP54A belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump compliance in safety-critical platforms where thermal management and long-term surge endurance are mandatory.
FAQ
What is the clamping voltage of MAPLAD36KP54A at its rated peak pulse current?
The MAPLAD36KP54A has a maximum clamping voltage (VC) of 87.1 V at its peak pulse current (IPP) of 414 A under 10/1000 μs waveform conditions. This value is measured per standard test methods and ensures downstream circuitry remains within safe voltage limits during high-energy transients. The MAPLAD36KP54A maintains this clamping performance across its full operating temperature range of −55 to +150 °C.
Is MAPLAD36KP54A suitable for bidirectional signal line protection?
No, MAPLAD36KP54A is a unidirectional TVS diode, intended for DC power rail protection where polarity is fixed. For bidirectional protection, Microsemi offers the MAPLAD36KP54CA variant. Using MAPLAD36KP54A on AC or bidirectional lines would result in forward conduction during negative half-cycles, potentially damaging the device or circuit. Always match polarity designation (A vs. CA suffix) to system architecture.
Does MAPLAD36KP54A require a heatsink for continuous operation?
MAPLAD36KP54A does not require an external heatsink for single-pulse surge events, but its metal base must be soldered to a minimum 1-in² copper pour for thermal performance. For repetitive surges or elevated ambient temperatures, a heatsink is recommended to maintain junction temperature below 150 °C. Its RθJC of 1.0 °C/W assumes direct thermal contact-achievable only when the cathode base is fully soldered to a thermally robust PCB layer or external heatsink.
What industry standards does MAPLAD36KP54A comply with?
MAPLAD36KP54A is tested and compliant with RTCA DO-160 Section 22 (lightning-induced transient susceptibility), IEC 61000-4-5 (surge immunity, Class 4 with 42 Ω source), IEC 61000-4-2 (ESD), and IEC 61000-4-4 (EFT). It is also AEC-Q101 qualified and supports MIL-PRF-19500 upscreening. These certifications validate its use in certified aerospace and automotive safety systems.
How does the MAPLAD36KP54A differ from standard SMCJ54A TVS diodes?
The MAPLAD36KP54A delivers 36,000 W peak pulse power-24× higher than the 1500 W rating of SMCJ54A-with superior thermal resistance (RθJC = 1.0 vs. ~3.5 °C/W) and DO-160/Class 4 validation. Its metal-base PLAD package enables direct heatsink mounting, whereas SMCJ54A relies on PCB copper for thermal dissipation. MAPLAD36KP54A is specified for multi-stroke lightning, while SMCJ54A targets general-purpose industrial surges.
MAPLAD36KP54A 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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 414A
- 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
MAPLAD36KP54A FAQ
1.How can I place an order for MAPLAD36KP54A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP54A 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 MAPLAD36KP54A reliable?
The price and inventory of MAPLAD36KP54A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP54A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP54A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP54A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP54A?
MAPLAD36KP54A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP54A 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 MAPLAD36KP54A?
For technical support, including MAPLAD36KP54A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP54A requirements.
6.How does Aetrix verify that MAPLAD36KP54A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP54A 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 MAPLAD36KP54A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP54A?
All MAPLAD36KP54A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP54A, 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 MAPLAD36KP54A part is unused and in its original packaging.
Return procedure for MAPLAD36KP54A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP54A Tags
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