My Inquiry
My Account
Microchip Technology MAPLAD36KP58A
- Part No.:
- MAPLAD36KP58A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP58A.pdf
- Description:
- TVS DIODE 58VWM 93.6VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,903
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAPLAD36KP58A 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 kW peak pulse power at 10/1000 μs, features a 58 V reverse standoff voltage (VWM), clamps transients to ≤93.6 V at 385 A IPP, and operates across –55°C to +150°C junction temperature. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP58A datasheet, MAPLAD36KP58A pinout, MAPLAD36KP58A application, or MAPLAD36KP58A equivalent, this device serves as a high-reliability, low-profile TVS for secondary lightning protection (IEC 61000-4-5 Class 4 with 12 Ω source), pin-injection protection (RTCA/DO-160F Waveform 4 Level 5 up to 300 V), and load dump suppression in avionics power distribution units.
Technical Context
The MAPLAD36KP58A employs an avalanche diode structure optimized for fast response (<5 ns clamping time) and low thermal resistance (RθJC = 1.0 °C/W). Its void-free thermosetting epoxy package enables direct metal-base heat sinking, supporting sustained energy dissipation under repetitive surges at ≤0.05% duty factor.
It is rated for 36,000 W peak pulse power per 10/1000 μs waveform, with breakdown voltage V(BR) of 64.4–71.2 V at 5 mA, and maximum clamping voltage VC of 93.6 V at 385 A IPP - validated per IEC 61000-4-2/4-4/4-5 and RTCA DO-160F test protocols.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced transients without failure |
| Reverse Standoff Voltage (VWM) | 58 V - sets maximum continuous operating voltage before clamping activation |
| Clamping Voltage (VC) | ≤93.6 V @ 385 A IPP - limits downstream voltage stress during surge events |
| Breakdown Voltage (V(BR)) | 64.4–71.2 V @ 5 mA - defines precise avalanche onset threshold for predictable triggering |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or heatsink for multi-pulse reliability |
| Operating Temperature Range | –55°C to +150°C - supports deployment in engine bay, flight control, and avionics bays |
| Surge Current Rating (IPP) | 385 A @ 10/1000 μs - withstands automotive load dump and DO-160F Waveform 4 Level 5 |
Pinout & Package
MAPLAD36KP58A uses a surface-mount PLAD package with metal base cathode termination. The device has two terminals: anode (top metallization) and cathode (exposed metal base), enabling low-inductance mounting directly to thermal pads on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal | Connected to protected line (e.g., 28 V DC bus); current flows into device during reverse-biased surge |
| Cathode (Metal Base) | Ground reference / heat sink interface | Must be soldered to large copper pour or heatsink; serves as both electrical return and primary thermal path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT PLAD package | Enables high-density layout in space-constrained avionics modules while maintaining 1.0 °C/W thermal resistance |
| AEC-Q101 qualification | Validates robustness for automotive powertrain and body electronics under temperature cycling and humidity exposure |
| RTCA DO-160F Section 22 compliance | Meets multi-stroke lightning immunity requirements for commercial aircraft electrical systems |
| IEC 61000-4-5 Class 4 support (12 Ω source) | Protects against severe secondary lightning surges in aircraft power distribution networks |
| RoHS-compliant (e3 plating) | Uses annealed matte-tin terminations compatible with lead-free reflow and MIL-STD-750 solderability standards |
Applications
| Avionics Power Distribution Unit | Automotive 28 V DC Load Dump Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus inputs in flight control computers exposed to lightning-induced transients per RTCA DO-160F Section 22. IC Role / Device Role / Timing Role: Unidirectional TVS placed at board-level input filter stage to clamp surges before they reach DC/DC converters and FPGAs. Use Value: Limits clamped voltage to ≤93.6 V, preserving 100 V-rated input capacitors and preventing latch-up in downstream ASICs. |
Use Scenario: Safeguarding engine control unit (ECU) power inputs during alternator load dump events in commercial vehicles. IC Role / Device Role / Timing Role: Primary surge suppression device mounted directly at connector entry point on ECU PCB. Use Value: Absorbs 36 kW pulses without degradation, meeting ISO 7637-2 Pulse 5a requirements with no derating needed below +105°C. |
| Industrial Motor Drive DC Bus | Railway Signaling Power Interface |
Use Scenario: Shielding variable-frequency drive (VFD) DC link inputs from switching transients generated by IGBT commutation. IC Role / Device Role / Timing Role: Fast-response TVS connected between DC+ and chassis ground to shunt inductive kickback energy. Use Value: Sub-5 ns response time prevents voltage overshoot beyond 93.6 V, avoiding overvoltage shutdown of gate drivers. |
Use Scenario: Securing 72 V DC signaling interfaces in European railway signaling cabinets subject to IEC 61000-4-5 Class 4 surges. IC Role / Device Role / Timing Role: Secondary protection device installed after primary MOV-based front-end filtering. Use Value: Provides precise 58 V standoff and low clamping ratio (VC/VWM = 1.61), ensuring compatibility with 80 V-rated interface ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | Lower PPP rating (600 W), smaller SMB package, RθJA = 50 °C/W (no metal base) | Limited to single-stroke, low-duty-cycle surges; unsuitable for DO-160F multi-stroke or automotive load dump | Select only for cost-sensitive industrial controls where 36 kW capability is unnecessary |
| SMCJ58A | Higher PPP (1500 W), SMC package, RθJA = 25 °C/W, but still lacks metal-base thermal path and AEC-Q101/DO-160F validation | Acceptable for basic IEC 61000-4-5 Class 2, but not certified for aviation or automotive safety-critical use | Use where full qualification is not mandated and thermal budget allows higher ambient rise |
Compared with SMBJ58A and SMCJ58A, the MAPLAD36KP58A provides 24× and 24× higher peak pulse power respectively, integrated metal-base thermal management, and formal qualification to RTCA DO-160F and AEC-Q101 - making it the only option for certified aerospace and automotive safety systems requiring multi-stroke surge resilience.
Availability
MAPLAD36KP58A is available at Aetrix Electronics and suitable for avionics power distribution, automotive ECU protection, industrial motor drive DC bus conditioning, and railway signaling interface hardening requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP58A 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 MAPLAD36KP58A belongs to Microsemi's high-power PLAD TVS family, engineered specifically for certified lightning and load dump protection in safety-critical platforms where thermal performance, surge repetition tolerance, and regulatory compliance are non-negotiable.
FAQ
What is the clamping voltage of MAPLAD36KP58A at its rated peak pulse current?
The MAPLAD36KP58A exhibits a maximum clamping voltage (VC) of 93.6 V when subjected to its rated peak pulse current (IPP) of 385 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and ensures downstream components see controlled overvoltage stress during surge events.
Is MAPLAD36KP58A qualified for automotive applications?
Yes, MAPLAD36KP58A is AEC-Q101 qualified, confirming its suitability for automotive powertrain and body electronics. It meets stringent requirements for temperature cycling, humidity resistance, and surge endurance - making it appropriate for 28 V load dump protection in ECUs and ADAS modules.
How does the PLAD package of MAPLAD36KP58A improve thermal performance?
The MAPLAD36KP58A uses a metal-base PLAD package with RθJC = 1.0 °C/W, allowing direct conduction of surge energy into PCB copper or external heatsinks. Unlike standard SMD packages relying on traces for heat transfer, this design minimizes junction temperature rise during repetitive 36 kW pulses, extending device lifetime in high-duty-cycle environments.
Does MAPLAD36KP58A meet RTCA DO-160F lightning protection requirements?
Yes, MAPLAD36KP58A is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. It supports Waveform 4 (6.4/69 μs) Level 5 up to 300 V standoff and Waveform 5A (40/120 μs) Level 4 up to 78 V, as documented in the RF01216 datasheet - making it suitable for commercial aircraft power system certification.
What is the polarity configuration of MAPLAD36KP58A?
MAPLAD36KP58A is a unidirectional TVS diode: the cathode is the exposed metal base (bottom side), and the anode is the top metallized surface. This configuration allows it to conduct only during reverse-biased transients on positive-rail systems, providing precise clamping without forward conduction during normal operation.
MAPLAD36KP58A 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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 385A
- 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
MAPLAD36KP58A FAQ
1.How can I place an order for MAPLAD36KP58A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP58A 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 MAPLAD36KP58A reliable?
The price and inventory of MAPLAD36KP58A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP58A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP58A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP58A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP58A?
MAPLAD36KP58A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP58A 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 MAPLAD36KP58A?
For technical support, including MAPLAD36KP58A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP58A requirements.
6.How does Aetrix verify that MAPLAD36KP58A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP58A 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 MAPLAD36KP58A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP58A?
All MAPLAD36KP58A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP58A, 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 MAPLAD36KP58A part is unused and in its original packaging.
Return procedure for MAPLAD36KP58A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP58A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
