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Microchip Technology MAPLAD36KP24CA
- Part No.:
- MAPLAD36KP24CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP24CA.pdf
- Description:
- TVS DIODE 24VWM 39.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,995
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Product details
Overview
MAPLAD36KP24CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤39.8 V at 905 A, and features a 24 V reverse standoff voltage (VWM), 26.7–29.5 V breakdown voltage (V(BR)), and <5 ns response time. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP24CA datasheet, MAPLAD36KP24CA pinout, MAPLAD36KP24CA application, or MAPLAD36KP24CA equivalent, key selection criteria include its bidirectional polarity, 24 V working voltage rating, 36 kW surge capability, IEC 61000-4-5 Class 4/5 secondary lightning compliance with 12 Ω and 42 Ω source impedances, and suitability for pin-injection protection per RTCA/DO-160F Waveform 4 Level 5 (up to 300CA).
Technical Context
The MAPLAD36KP24CA is a silicon avalanche diode-based TVS optimized for low-clamping, fast-response suppression of high-amplitude transients. Its bidirectional construction enables symmetrical clamping for AC-coupled or floating signal lines, and its thermally enhanced PLAD package achieves 1.0 °C/W junction-to-case thermal resistance for sustained multi-pulse operation.
It supports full compliance with RTCA DO-160F Waveform 4 (6.4/69 μs) Level 5 up to 300CA variants and Waveform 5A (40/120 μs) Level 4 up to 78CA - confirming its use in avionics pin-injection hardening. Standby current is tightly controlled via 3σ lot norm screening (ID ≤10 μA @ VWM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous operating voltage before clamping begins; matches 24 V nominal DC bus or signal rail. |
| V(BR) min/max | 26.7–29.5 V - Confirmed avalanche onset range at 5 mA; ensures reliable turn-on above system overvoltage margin. |
| VC @ IPP | 39.8 V max at 905 A - Clamping voltage under 10/1000 μs surge; limits downstream IC stress to safe levels. |
| PPP | 36,000 W - Peak pulse power handling at 10/1000 μs; enables single-device protection against severe lightning-induced surges. |
| Response time | <5 ns - Time from transient onset to clamping; critical for protecting high-speed interfaces and microcontrollers. |
| ID @ VWM | ≤10 μA - Ultra-low leakage at rated standoff; prevents battery drain or signal distortion in always-on circuits. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; allows direct mounting to heatsink for repeated surge duty cycles. |
Pinout & Package
The MAPLAD36KP24CA uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.33 mm), metal base cathode contact on bottom, tin-lead or RoHS-compliant matte-tin plating, and weight ~1.7–2.0 g. Polarity marking applies only to unidirectional versions; bidirectional devices like MAPLAD36KP24CA have symmetric terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Side) | Transient current entry point (positive half-cycle) | Connects to protected line; forms one side of bidirectional clamping path. |
| Cathode (Metal Base) | Transient current return path (both polarities) | Serves as common reference terminal; requires direct thermal connection to PCB copper pour or heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses, or floating nodes without polarity constraints. |
| RTCA DO-160F Waveform 4 Level 5 compliance | Validated for pin-injection hardening in avionics up to 300CA variants - MAPLAD36KP24CA falls within this qualification envelope. |
| AEC-Q101 qualification | Confirms reliability for automotive under-hood applications including load dump and alternator transients. |
| IEC 61000-4-5 Class 4/5 secondary lightning protection | Supports 42 Ω and 12 Ω source impedance testing - MAPLAD36KP24CA qualifies for Class 4 (long-distance) and Class 5 (short-distance) per spec. |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life restrictions - simplifies SMT assembly logistics. |
Applications
| Avionics Lightning Protection | Automotive Power Distribution |
|---|---|
Use Scenario: Protecting ARINC 429 data lines and sensor inputs in commercial aircraft against multi-stroke lightning per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient shunt device placed at connector interface to divert surge energy before it reaches FPGA or ADC front-end. Use Value: Achieves >36 kW dissipation with <5 ns response, meeting Level 5 pin-injection requirements while maintaining signal integrity. | Use Scenario: Safeguarding 24 V power distribution networks in off-highway vehicles during ISO 7637-2 Load Dump events. IC Role / Device Role / Timing Role: High-power crowbar element across main supply rail, triggered within nanoseconds to clamp voltage spikes to ≤40 V. Use Value: Withstands 905 A peak current and 36 kW pulses without degradation, enabling single-device protection without parallel stacking. |
| Industrial Motor Drive I/O | Railway Signaling Interface |
Use Scenario: Shielding encoder feedback lines and digital I/O in servo drives exposed to switching transients from IGBT inverters. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector to suppress both positive and negative polarity EFT bursts per IEC 61000-4-4. Use Value: Low 24 V VWM avoids false triggering during normal 24 V control logic swings while clamping EFT to <40 V. | Use Scenario: Hardening 24 V trackside signaling circuits against induced surges from nearby lightning strikes or traction current switching. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy per IEC 61000-4-5 with 42 Ω source impedance. Use Value: Validated for Class 5 secondary lightning protection at 24 V rating - ensures robust coordination with upstream GDTs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | 600 W PPP rating, SMB package, 38.9 V VC @ 15.3 A - 60× lower power than MAPLAD36KP24CA. | Only suitable for low-energy ESD/EFT; cannot meet DO-160 lightning or ISO 7637 load dump. | Select when cost and board space constrain design and surge threat level is limited to IEC 61000-4-2/4-4. |
| SMCJ24CA | 1500 W PPP rating, SMC package, 38.9 V VC @ 38.3 A - 24× lower power than MAPLAD36KP24CA. | Meets basic IEC 61000-4-5 Class 3 but fails Class 4/5 lightning and multi-stroke requirements. | Select for industrial control panels where moderate surge immunity suffices and PLAD footprint is unavailable. |
Compared with SMBJ24CA and SMCJ24CA, the MAPLAD36KP24CA provides 60× and 24× higher peak pulse power respectively, enabling certified compliance with RTCA DO-160F lightning and ISO 7637-2 load dump - making it the only viable option for aerospace and heavy-duty automotive applications requiring 36 kW surge handling.
Availability
MAPLAD36KP24CA is available at Aetrix Electronics and suitable for avionics lightning hardening, automotive 24 V load dump protection, and industrial motor drive I/O conditioning requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD36KP24CA 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 (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 MAPLAD36KP24CA belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for certified lightning and load dump protection in safety-critical platforms where multi-stroke survivability and thermal stability are mandatory.
FAQ
What is the maximum clamping voltage of the MAPLAD36KP24CA under standard test conditions?
The MAPLAD36KP24CA has a maximum clamping voltage (VC) of 39.8 V when subjected to a 10/1000 μs surge waveform at its rated peak pulse current of 905 A. This value is measured per JEDEC standards and guarantees that downstream circuitry remains below 40 V during worst-case transients, preserving logic-level compatibility and preventing latch-up in connected ICs.
Is the MAPLAD36KP24CA compliant with automotive qualification standards?
Yes, the MAPLAD36KP24CA is qualified to AEC-Q101 for discrete semiconductors, confirming its suitability for automotive applications including under-hood 24 V systems. Its 36 kW surge rating and validated performance against ISO 7637-2 Load Dump pulses make it appropriate for commercial and off-highway vehicle power distribution networks.
Does the MAPLAD36KP24CA require special PCB layout considerations?
Yes - the MAPLAD36KP24CA's metal-base cathode must be soldered directly to a large, low-thermal-resistance copper area (≥250 mm² recommended) to maintain RθJC = 1.0 °C/W. The pad layout specified in Microsemi's RF01216 Rev B document must be followed precisely to ensure thermal performance and surge endurance; inadequate copper will cause premature failure under repeated 36 kW pulses.
Can the MAPLAD36KP24CA be used for RTCA DO-160F lightning protection?
Yes, the MAPLAD36KP24CA is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing and supports Waveform 4 (6.4/69 μs) Level 5 up to 300CA-rated variants. As a 24 V device, it satisfies Level 5 requirements for pin-injection protection in avionics subsystems operating at nominal 24 V rails.
What is the polarity configuration of the MAPLAD36KP24CA?
The MAPLAD36KP24CA is a bidirectional TVS, indicated by the "CA" suffix in its part number. Unlike unidirectional variants (e.g., MAPLAD36KP24A), it provides symmetrical clamping for both positive- and negative-going transients without requiring orientation during placement - ideal for AC-coupled or floating interfaces.
MAPLAD36KP24CA 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 39.8V
- Current - Peak Pulse (10/1000µs):
- 905A
- 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
MAPLAD36KP24CA FAQ
1.How can I place an order for MAPLAD36KP24CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP24CA 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 MAPLAD36KP24CA reliable?
The price and inventory of MAPLAD36KP24CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP24CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP24CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP24CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP24CA?
MAPLAD36KP24CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP24CA 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 MAPLAD36KP24CA?
For technical support, including MAPLAD36KP24CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP24CA requirements.
6.How does Aetrix verify that MAPLAD36KP24CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP24CA 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 MAPLAD36KP24CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP24CA?
All MAPLAD36KP24CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP24CA, 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 MAPLAD36KP24CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP24CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP24CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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