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Microchip Technology SMAJ90CE3/TR13
- Part No.:
- SMAJ90CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ90CE3/TR13.pdf
- Description:
- TVS DIODE 90VWM 160VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,253
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Product details
Overview
SMAJ90CE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in DC power rails and signal lines. It features a 90 V reverse standoff voltage (VWM), 100 V minimum breakdown voltage (VBR), clamps transients to ≤160 V at 3.1 A peak pulse current, and delivers 500 W peak pulse power per 10/1000 µs waveform - used in industrial power supply input stages and telecom interface protection.
For engineers reviewing the SMAJ90CE3/TR13 datasheet, SMAJ90CE3/TR13 pinout, SMAJ90CE3/TR13 application, or SMAJ90CE3/TR13 equivalent, key selection criteria include bidirectional clamping capability, IEC61000-4-5 Class 1 secondary lightning compliance (42 Ω source), RoHS-compliant matte-tin plating, and DO-214AC package compatibility with standard SMT reflow profiles.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or floating signal paths without polarity dependency. Its <100 ps theoretical response time (unidirectional) and <5 ns for bidirectional operation ensures effective suppression of ESD (IEC61000-4-2 ±15 kV contact), EFT (IEC61000-4-4 ±2 kV), and induced RF transients.
The device is rated for -65°C to +150°C operating temperature, exhibits 3.1 µA maximum standby leakage at 90 V, and achieves thermal resistance of 15°C/W junction-to-lead when mounted per recommended footprint - critical for sustained surge duty in enclosed industrial enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous DC or RMS voltage the device blocks without conduction; sets operating margin for 72–90 V nominal systems. |
| VBR min @ IBR | 100 V @ 1 mA - Confirmed breakdown threshold; ensures reliable triggering above system operating voltage with safety margin. |
| VC @ IPP | 160 V @ 3.1 A - Clamping voltage during 10/1000 µs surge; defines maximum stress imposed on downstream circuitry. |
| PPP | 500 W - Peak pulse power handling capacity; supports single-event surges up to 3.1 A at 160 V without failure. |
| ID max @ VWM | 3.1 µA - Ultra-low leakage current at 90 V; prevents measurable power loss or bias shift in high-impedance monitoring circuits. |
| Package | DO-214AC (SMA) - Standard surface-mount outline with 2.57–2.79 mm body width; compatible with automated pick-and-place and IPC-7351B footprints. |
| Operating Temp | -65°C to +150°C - Wide thermal range enables deployment in automotive under-hood, industrial motor drives, and outdoor telecom equipment. |
Pinout & Package
DO-214AC (SMA) package: molded thermosetting epoxy body (UL94V-0), void-free construction, C-bend leads with RoHS-compliant matte-tin plating. Cathode band omitted - bidirectional symmetry eliminates polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path terminal | Identical bidirectional terminals; connects between protected line and ground - no orientation required during placement. |
| Case / Body | Thermal and mechanical interface | Non-conductive epoxy body provides electrical isolation; wide lead profile enhances heat dissipation to PCB copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., RS-485), and ungrounded interfaces without polarity constraints. |
| IEC61000-4-5 Class 1 compliance (42 Ω) | Validated for secondary lightning surges up to 4 kV in telecom/data line applications with 42 Ω source impedance. |
| RoHS-compliant "e3" finish | 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 | Handles repetitive 10/1000 µs transients up to 3.1 A without degradation - suitable for motor drive gate driver protection and power supply inputs. |
Applications
| Industrial Power Supply Input | Telecom Data Line Protection |
|---|---|
Use Scenario: 48 V DC input stage of DIN-rail power supplies exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed before upstream DC-DC converter and EMI filter. Use Value: Limits transient voltage to ≤160 V, preventing damage to 200 V-rated MOSFETs and ensuring EN 61000-4-5 compliance at Class 1 level. |
Use Scenario: RS-485 transceiver bus lines in outdoor base station cabinets subject to induced lightning surges. IC Role / Device Role / Timing Role: Bidirectional line-to-ground protector on A/B differential pair, paired with common-mode choke. Use Value: Symmetric clamping preserves signal integrity during ±4 kV surges while maintaining <3.1 µA leakage for low-power receiver bias networks. |
| Automotive Body Control Module | Medical Equipment Signal Interface |
Use Scenario: LIN bus or sensor supply lines in BCMs subjected to ISO 7637-2 Pulse 1/2a/3a transients. IC Role / Device Role / Timing Role: Localized TVS at connector entry point, shunting energy directly to chassis ground. Use Value: Sub-5 ns response time captures fast edge transients; 150°C rating supports under-dash mounting without derating. |
Use Scenario: Analog front-end inputs (ECG, EEG) connected to patient cables vulnerable to ESD discharge. IC Role / Device Role / Timing Role: First-line ESD suppressor before instrumentation amplifier input network. Use Value: 3.1 µA leakage avoids DC offset errors; bidirectional operation accommodates floating electrode configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-E3/5A (Vishay) | Unidirectional; 90 V VWM, 100 V VBR, 160 V VC @ 3.1 A - identical clamping but polarity-sensitive. | Requires correct anode/cathode orientation; unsuitable for AC or floating lines without series diodes. | Select only when protecting grounded DC rails where polarity is fixed and layout allows directional placement. |
| SMCJ90CA (Littelfuse) | Same DO-214AB package; 90 V VWM, 100 V VBR, 160 V VC @ 3.1 A; 1500 W rating (larger SMC package). | Physically larger (DO-214AB vs DO-214AC); requires different footprint and higher board area. | Choose when higher surge endurance is needed and PCB space permits larger SMC package; not drop-in compatible. |
Compared with SMAJ90CE3/TR13, SMAJ90A-E3/5A demands strict polarity alignment and lacks AC-line flexibility, while SMCJ90CA offers higher power rating but requires board redesign due to DO-214AB footprint mismatch - making SMAJ90CE3/TR13 optimal for space-constrained, bidirectional protection needs.
Availability
SMAJ90CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, telecom data line protection, automotive body control modules, and medical signal interface designs requiring stable component supply and full RoHS compliance.
Supply support for SMAJ90CE3/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 engineered for robust, surface-mount transient suppression in harsh environments - emphasizing low clamping voltage, wide temperature operation, and IEC-compliant surge immunity for mission-critical power and interface protection.
FAQ
What does the 'C' suffix indicate in SMAJ90CE3/TR13?
The 'C' suffix in SMAJ90CE3/TR13 denotes bidirectional construction - meaning the device clamps symmetrically for both positive and negative transients without polarity dependence. This differs from unidirectional variants (e.g., SMAJ90A) that require correct anode/cathode orientation. SMAJ90CE3/TR13 has no cathode band marking, confirming its bidirectional nature per Microsemi's datasheet revision L.
Is SMAJ90CE3/TR13 compliant with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ90CE3/TR13 is validated for IEC61000-4-5 secondary lightning protection at Class 1 level with 42 Ω source impedance, supporting up to 4 kV test voltage. Its 160 V clamping voltage at 3.1 A peak pulse current ensures downstream ICs remain within safe operating limits during standardized surge events - confirmed in Microsemi's MSC0270A datasheet, page 1.
What is the thermal resistance of SMAJ90CE3/TR13, and how does it affect PCB layout?
SMAJ90CE3/TR13 has a thermal resistance of 15°C/W junction-to-lead when mounted per Microsemi's recommended footprint. This value assumes use of adequate copper pour connected to both leads. Layout must follow the specified pad dimensions (2.57–2.79 mm width, 4.93–5.48 mm length) to maintain thermal performance and avoid derating - critical for repeated surge events in industrial power applications.
Does SMAJ90CE3/TR13 require moisture sensitivity handling prior to soldering?
No, SMAJ90CE3/TR13 is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without dry packing or baking. The 'e3' suffix confirms RoHS-compliant matte-tin plating compatible with standard lead-free reflow profiles up to 260°C for 10 seconds - verified in the Mechanical and Packaging section of the datasheet.
How does the clamping voltage of SMAJ90CE3/TR13 compare to its breakdown voltage?
SMAJ90CE3/TR13 has a minimum breakdown voltage (VBR) of 100 V at 1 mA and a maximum clamping voltage (VC) of 160 V at 3.1 A peak pulse current. This 60 V differential represents the dynamic voltage rise under surge conditions - a key design parameter for ensuring protected ICs (e.g., 150 V-rated transceivers) remain within absolute maximum ratings during transient events.
SMAJ90CE3/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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 160V
- Current - Peak Pulse (10/1000µs):
- 3.1A
- 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)
SMAJ90CE3/TR13 FAQ
1.How can I place an order for SMAJ90CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ90CE3/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 SMAJ90CE3/TR13 reliable?
The price and inventory of SMAJ90CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ90CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ90CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ90CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ90CE3/TR13?
SMAJ90CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ90CE3/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 SMAJ90CE3/TR13?
For technical support, including SMAJ90CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ90CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ90CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ90CE3/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 SMAJ90CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ90CE3/TR13?
All SMAJ90CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ90CE3/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 SMAJ90CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ90CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ90CE3/TR13 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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