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Microchip Technology SMAJ100CE3/TR13
- Part No.:
- SMAJ100CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ100CE3/TR13.pdf
- Description:
- TVS DIODE 100VWM 179VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,729
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Product details
Overview
SMAJ100CE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for robust ESD, EFT, and secondary lightning surge protection in power and signal lines. It features a 100 V standoff voltage (VWM), 111 V minimum breakdown voltage (VBR), clamps to ≤179 V at 5.5 A peak pulse current (IPP), and delivers 500 W peak pulse power (10/1000 µs). It is widely deployed in industrial power supplies and telecom interface circuits.
For engineers reviewing the SMAJ100CE3/TR13 datasheet, SMAJ100CE3/TR13 pinout, SMAJ100CE3/TR13 application, or SMAJ100CE3/TR13 equivalent, key selection criteria include bidirectional clamping behavior, IEC61000-4-2/4-4/4-5 compliance, DO-214AC package thermal performance, and RoHS-compliant matte-tin terminations.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical clamping characteristics in forward and reverse directions. Its <100 ps theoretical response time enables effective suppression of fast-rising ESD events per IEC61000-4-2 Level 4 (±15 kV contact), while its 500 W rating supports repetitive surges up to 0.01% duty cycle.
The device is rated for operation from –65 °C to +150 °C, with thermal resistance of 15 °C/W junction-to-lead and 80 °C/W junction-to-ambient on FR4 (1 oz Cu). Its 1.56 W steady-state power dissipation at 25 °C ambient ensures reliability under sustained leakage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin for 85–100 V DC bus protection. |
| VBR min | 111 V @ 1 mA - Minimum breakdown threshold; ensures reliable conduction only during overvoltage transients, not normal operation. |
| VC @ IPP | 179 V @ 5.5 A (10/1000 µs) - Clamped voltage seen by protected circuit; limits downstream stress to ≤179 V during worst-case surge. |
| PPP | 500 W - Peak pulse power handling capability; sustains 5.5 A × 179 V surges without failure under standard waveform. |
| ID @ VWM | ≤2.8 µA - Ultra-low standby leakage; minimizes power loss and avoids false triggering in high-impedance sensing or bias networks. |
| tclamp | <5 ns - Bidirectional clamping response time; ensures protection activation within nanoseconds of transient onset. |
| Operating Temp | –65 °C to +150 °C - Wide temperature range supports deployment in automotive engine bays, industrial motor drives, and outdoor telecom enclosures. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, void-free thermosetting epoxy case meeting UL94V-0; C-bend (modified J-bend) matte-tin plated leads; polarity unmarked (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path (bidirectional) | Either terminal serves as input or return; no polarity dependency-enables flexible placement across differential or single-ended lines. |
| Case / Body | Thermal and mechanical interface | Provides primary heat dissipation path to PCB copper; requires recommended pad layout (2.57–2.79 mm width, 4.93–5.48 mm length) for optimal thermal resistance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional architecture | Enables symmetrical clamping on AC lines, RS-485 buses, or ungrounded interfaces without external polarity management. |
| IEC61000-4-5 Class 1 compliance (42 Ω source) | Validated for secondary lightning surge immunity up to 4 kV (line-earth) in industrial power entry and PoE injectors. |
| RoHS-compliant "e3" termination | Matte-tin plating meets JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required, supports standard reflow profiles. |
| 500 W peak pulse rating (10/1000 µs) | Supports repeated surge events in motor drive gate drivers and PLC I/O modules without derating or thermal runaway. |
| Low capacitance (typ. ~100 pF at 0 V) | Minimizes signal distortion on high-speed data lines (e.g., CAN FD, RS-485) while maintaining robust ESD immunity. |
Applications
| Industrial Power Supply Input | RS-485 Data Line Protection |
|---|---|
Use Scenario: 24–48 V DC input stage of programmable logic controllers exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary surge clamp placed between line and ground, upstream of DC-DC converters and LDOs. Use Value: Limits transient voltage to ≤179 V, preventing damage to input rectifiers and controller ICs during 100 A/50 ms load dump events. |
Use Scenario: Differential pair protection in factory automation RS-485 nodes subject to ESD and cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional shunt clamp across A/B lines and ground, absorbing ±15 kV contact ESD per IEC61000-4-2. Use Value: Maintains signal integrity with <100 pF capacitance while clamping transients within 5 ns-preserving 10 Mbps data rates. |
| Telecom PoE Injector Port | Automotive Body Control Module (BCM) Sensor Interface |
Use Scenario: 48 V power delivery port of IEEE 802.3af/at PoE injectors connected to unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Common-mode surge suppressor on power pair (PSE side), referenced to chassis ground. Use Value: Withstands 4 kV IEC61000-4-5 surges (42 Ω source) without degradation-ensuring uninterrupted power delivery during lightning-induced grid disturbances. |
Use Scenario: LIN bus or analog sensor inputs (e.g., temperature, pressure) in BCMs exposed to battery transients and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Low-leakage (≤2.8 µA) bidirectional clamp protecting microcontroller GPIOs and ADC front-ends. Use Value: Prevents latch-up and parametric shift during 100 V/50 ms load dump pulses while adding negligible offset error to 12-bit sensor measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A-E3/5B (Vishay) | Unidirectional; 100 V VWM, 111 V VBR, 179 V VC @ 5.5 A; same DO-214AC package and RoHS-3 compliance. | Requires explicit polarity assignment; unsuitable for AC-coupled or floating differential lines without redesign. | Select when protecting grounded DC rails where polarity is fixed and cost optimization is prioritized. |
| SMBJ100CA (Littelfuse) | Bidirectional; 100 V VWM, 111 V VBR, 179 V VC @ 5.5 A; SMB (DO-214AA) package-larger footprint (4.58 × 3.94 mm vs. 4.50 × 2.79 mm) and higher thermal resistance. | Lower power density; may require board area increase and thermal relief adjustments in space-constrained designs. | Select when existing layout accommodates SMB size and higher junction-to-ambient RθJA (100 °C/W) is acceptable. |
Compared with SMAJ100A-E3/5B and SMBJ100CA, SMAJ100CE3/TR13 uniquely combines bidirectional symmetry, DO-214AC compactness, and verified IEC61000-4-5 Class 1 compliance-making it optimal for high-density industrial and telecom interfaces requiring polarity-agnostic surge resilience.
Availability
SMAJ100CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, RS-485 communication systems, and PoE injector designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for SMAJ100CE3/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 ruggedized transient suppression in harsh environments-targeting applications demanding guaranteed IEC61000-4-x compliance, wide temperature operation, and proven field reliability in mission-critical infrastructure.
FAQ
What does the "C" suffix in SMAJ100CE3/TR13 indicate?
The "C" suffix denotes bidirectional construction: SMAJ100CE3/TR13 clamps symmetrically for both positive and negative transients, unlike unidirectional variants (e.g., SMAJ100AE3/TR13) that conduct only in reverse bias. This makes SMAJ100CE3/TR13 ideal for AC lines, differential data buses, and floating grounds where polarity is undefined.
Is SMAJ100CE3/TR13 compliant with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ100CE3/TR13 is certified for IEC61000-4-5 secondary lightning surge immunity at Class 1 level with 42 Ω source impedance-supporting 4 kV line-to-ground surges. Its 500 W peak pulse rating and ≤179 V clamping voltage ensure protected circuits remain within safe operating limits during standardized surge testing.
What is the maximum steady-state power dissipation of SMAJ100CE3/TR13?
SMAJ100CE3/TR13 dissipates up to 1.56 W at 25 °C ambient (TA) when mounted on FR4 with 1 oz copper and the recommended pad layout. At lead temperature (TL) of 75 °C, its steady-state rating rises to 5 W-enabling reliable operation in thermally managed industrial enclosures without forced air cooling.
Does SMAJ100CE3/TR13 require moisture-sensitive handling precautions?
No-SMAJ100CE3/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it is not moisture-sensitive and requires no dry pack or baking prior to reflow. Its void-free epoxy body and matte-tin terminations support standard SMT assembly processes without special humidity controls.
How does the clamping response time of SMAJ100CE3/TR13 compare between unidirectional and bidirectional modes?
SMAJ100CE3/TR13 exhibits <5 ns clamping response time in bidirectional operation-slightly slower than unidirectional variants (<100 ps theoretical) due to dual-junction architecture-but still sufficiently fast to suppress ESD per IEC61000-4-2 (±15 kV contact) and EFT per IEC61000-4-4 without compromising protected circuit integrity.
SMAJ100CE3/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):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 179V
- Current - Peak Pulse (10/1000µs):
- 2.8A
- 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)
SMAJ100CE3/TR13 FAQ
1.How can I place an order for SMAJ100CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ100CE3/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 SMAJ100CE3/TR13 reliable?
The price and inventory of SMAJ100CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ100CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ100CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ100CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ100CE3/TR13?
SMAJ100CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ100CE3/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 SMAJ100CE3/TR13?
For technical support, including SMAJ100CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ100CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ100CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ100CE3/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 SMAJ100CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ100CE3/TR13?
All SMAJ100CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ100CE3/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 SMAJ100CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ100CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ100CE3/TR13 Tags
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