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Microchip Technology SMAJ150CAE3/TR13
- Part No.:
- SMAJ150CAE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ150CAE3/TR13.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,118
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Product details
Overview
SMAJ150CAE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for secondary lightning and ESD/EFT protection in DC power rails and signal lines. It features a 150 V standoff voltage (VWM), 167 V minimum breakdown voltage (VBR), clamps to ≤268 V at 1 A peak pulse current, delivers 500 W peak pulse power (10/1000 µs), and operates from –65 °C to +150 °C - used in industrial power supplies and telecom interface protection.
For engineers reviewing the SMAJ150CAE3/TR13 datasheet, SMAJ150CAE3/TR13 pinout, SMAJ150CAE3/TR13 application, or SMAJ150CAE3/TR13 equivalent, key selection criteria include bidirectional clamping capability, IEC61000-4-2/4-4/4-5 compliance, DO-214AC package thermal performance, and RoHS-compliant matte-tin plating for lead-free assembly.
Technical Context
This bidirectional TVS diode uses silicon avalanche junction technology to provide symmetrical clamping in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its <100 ps theoretical response time ensures suppression before sensitive downstream circuitry sustains damage from fast transients.
The device is rated for 500 W peak pulse power under the standardized 10/1000 µs waveform and exhibits 2.2 µA maximum standby leakage at 150 V standoff, supporting low-power system integrity. Thermal resistance is 15 °C/W junction-to-lead when soldered per recommended DO-214AC footprint on FR4 with 1 oz copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR min @ IBR | 167 V @ 1 mA - Minimum voltage at which avalanche conduction initiates; ensures reliable turn-on above normal operation. |
| VC @ IPP | 268 V @ 1 A - Clamped voltage during full-rated surge; determines protected circuit's maximum stress level. |
| PPP | 500 W @ 10/1000 µs - Peak transient energy handling capacity; validates robustness against lightning-induced surges. |
| ID max @ VWM | 2.2 µA - Ultra-low leakage current at standoff voltage; preserves battery life and avoids false triggering in high-impedance nodes. |
| Operating Temp | –65 °C to +150 °C - Wide temperature range supports deployment in harsh industrial and automotive under-hood environments. |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with wide leads for enhanced thermal dissipation and mechanical reliability. |
Pinout & Package
DO-214AC (SMA) package: molded thermosetting epoxy body (UL94V-0), void-free construction, C-bend (modified J-bend) leads with RoHS-compliant matte-tin plating. Cathode band omitted for bidirectional configuration; marking reads "150CA".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction terminals | No polarity designation; either terminal serves as anode or cathode depending on transient polarity - enables AC or floating line protection without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded DC lines without polarity concerns. |
| IEC61000-4-5 Class 1 support (42 Ω source) | Validated for secondary lightning immunity up to 150 V VWM, meeting industrial infrastructure surge requirements. |
| RoHS-compliant "e3" suffix | Matte-tin plating meets JEDEC J-STD-020B Level 1 moisture sensitivity; eliminates dry-pack requirement and supports lead-free reflow. |
| 500 W peak pulse rating (10/1000 µs) | Provides higher surge margin than standard 400 W SMAJ variants, extending design safety margin in high-energy environments. |
Applications
| Industrial Power Input Protection | Telecom Line Interface |
|---|---|
Use Scenario: 24–48 V DC input stage of programmable logic controllers (PLCs) exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rails to clamp positive/negative surges before they reach DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤268 V, preventing latch-up or gate oxide rupture in downstream MOSFETs and PMICs rated for 300 V absolute maximum. |
Use Scenario: RS-485 data lines in outdoor base stations subjected to ESD events and induced RF coupling from nearby antennas. IC Role / Device Role / Timing Role: TVS mounted differentially across A/B bus lines to suppress common-mode transients while preserving signal integrity. Use Value: Sub-100 ps response ensures clamping occurs before ESD pulse edge reaches transceiver ICs, reducing bit error rate and avoiding receiver saturation. |
| Automotive Body Control Module | Renewable Energy Inverter DC Link |
Use Scenario: 12 V auxiliary power rail in BCMs sharing chassis ground with high-current solenoid drivers. IC Role / Device Role / Timing Role: Bidirectional TVS shunting coupled transients from relay coil de-energization into the MCU supply domain. Use Value: 2.2 µA leakage prevents battery drain over 10-year vehicle lifetime; 150 °C rating ensures reliability near engine compartment heat sources. |
Use Scenario: DC link between photovoltaic array and MPPT converter where lightning-induced surges exceed 1 kV. IC Role / Device Role / Timing Role: TVS deployed in parallel with bulk capacitors to absorb residual energy after primary MOV-based protection. Use Value: 500 W rating handles residual 10/1000 µs tail energy not clamped by upstream components, preventing capacitor overvoltage failure. |
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 SMAJ150CA | Same DO-214AC package, identical VWM/VBR/VC specs, but non-RoHS tin-lead plating and no "e3" suffix. | Requires leaded reflow profile; not suitable for RoHS-compliant production lines. | Select if legacy process compatibility outweighs environmental compliance requirements. |
| Vishay SMAJ150CAHE3_A/H | RoHS-compliant, same electrical specs, but rated for 100% surge screening per MIL-PRF-19500 JANTXV with extended HTRB validation. | Qualified for aerospace avionics where extended burn-in and temperature cycling are mandated. | Choose when mission-critical reliability testing beyond commercial grade is required. |
Compared with SMAJ150CAE3/TR13, Littelfuse's SMAJ150CA lacks RoHS compliance and requires leaded assembly, while Vishay's SMAJ150CAHE3_A/H adds military-grade screening at higher cost - making Microsemi's part optimal for cost-sensitive industrial designs requiring standard RoHS compliance and proven field reliability.
Availability
SMAJ150CAE3/TR13 is available at Aetrix Electronics and suitable for industrial power input protection, telecom line interface, automotive body control modules, and renewable energy inverter DC link applications requiring stable component supply across multi-year production cycles.
Supply support for SMAJ150CAE3/TR13 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 and mixed-signal components for aerospace, defense, and industrial markets.
The SMAJ series was developed to deliver rugged, surface-mount transient suppression for harsh-environment electronics - emphasizing thermal robustness, IEC-compliant surge handling, and long-term parametric stability under thermal cycling.
FAQ
What does the "CA" suffix indicate in SMAJ150CAE3/TR13?
The "CA" suffix denotes a bidirectional configuration - meaning SMAJ150CAE3/TR13 provides symmetrical clamping in both forward and reverse directions. This allows it to protect AC-coupled circuits, differential data lines, or ungrounded DC paths without polarity constraints, unlike unidirectional "A" variants that require correct orientation during placement.
Is SMAJ150CAE3/TR13 compliant with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ150CAE3/TR13 is validated for IEC61000-4-5 secondary lightning protection with 42 Ω source impedance up to Class 1 (150 V VWM). Its 500 W peak pulse rating and 268 V clamping voltage ensure it limits surge energy to levels compatible with downstream 300 V-rated components in industrial power systems.
What is the thermal resistance of SMAJ150CAE3/TR13, and how does it affect PCB layout?
SMAJ150CAE3/TR13 has a junction-to-lead thermal resistance of 15 °C/W when mounted per the recommended DO-214AC footprint on FR4 with 1 oz copper. This requires adequate copper pour area around the pads and avoidance of narrow traces to maintain thermal path integrity - critical for sustaining repeated surge events without junction overheating.
Does SMAJ150CAE3/TR13 require moisture preconditioning before reflow soldering?
No - SMAJ150CAE3/TR13 carries IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1 rating, meaning it may be stored indefinitely at ambient conditions without dry-packaging or baking. The "e3" RoHS-compliant matte-tin plating further ensures compatibility with standard lead-free reflow profiles up to 260 °C for 10 seconds.
How does the clamping voltage of SMAJ150CAE3/TR13 compare to its breakdown voltage?
SMAJ150CAE3/TR13 has a minimum breakdown voltage (VBR) of 167 V at 1 mA and a maximum clamping voltage (VC) of 268 V at 1 A peak pulse current. This ~60% overvoltage margin ensures robust conduction during surges while keeping protected circuit stress well below typical 300 V absolute maximum ratings of industrial-grade ICs and MOSFETs.
SMAJ150CAE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 2.1A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ150CAE3/TR13 FAQ
1.How can I place an order for SMAJ150CAE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ150CAE3/TR13 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 SMAJ150CAE3/TR13 reliable?
The price and inventory of SMAJ150CAE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ150CAE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ150CAE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ150CAE3/TR13 transactions.
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4.How is shipping managed for SMAJ150CAE3/TR13?
SMAJ150CAE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ150CAE3/TR13 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 SMAJ150CAE3/TR13?
For technical support, including SMAJ150CAE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ150CAE3/TR13 requirements.
6.How does Aetrix verify that SMAJ150CAE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ150CAE3/TR13 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 SMAJ150CAE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ150CAE3/TR13?
All SMAJ150CAE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ150CAE3/TR13, 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 SMAJ150CAE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ150CAE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ150CAE3/TR13 Tags
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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