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Microchip Technology SMAJ8.0E3/TR13
- Part No.:
- SMAJ8.0E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ8.0E3/TR13.pdf
- Description:
- TVS DIODE 8VWM 15VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,026
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Product details
Overview
SMAJ8.0E3/TR13 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for primary and secondary lightning surge protection in DC power rails and signal lines. It features a 8.0 V working peak standoff voltage (VWM), 8.89 V minimum breakdown voltage (VBR), 15.0 V maximum clamping voltage (VC) at 33.3 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in industrial power supplies, automotive body electronics, and telecom interface circuits.
For engineers reviewing the SMAJ8.0E3/TR13 datasheet, SMAJ8.0E3/TR13 pinout, SMAJ8.0E3/TR13 application, or SMAJ8.0E3/TR13 equivalent, key selection criteria include clamping performance under IEC61000-4-5 (42 Ω source), low standby leakage (<50 µA @ VWM), RoHS-compliant matte-tin plating, and compatibility with standard DO-214AC footprint layouts for rapid PCB integration.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 8.89 V breakdown threshold at 1 mA test current. Its sub-100 ps theoretical response time enables effective suppression of ESD (IEC61000-4-2) and fast EFT bursts (IEC61000-4-4), while sustaining 500 W transient energy without degradation.
The device uses a void-free thermosetting epoxy case rated UL94V-0, with C-bend leads and 15 °C/W junction-to-lead thermal resistance. Mounted on FR4 with recommended footprint, it delivers 5 W steady-state dissipation at 75 °C lead temperature and supports 40 A forward surge (8.3 ms half-sine) - critical for inductive load switching protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Min) | 8.89 V @ 1 mA - Ensures reliable triggering above normal rail noise margin |
| VC @ IPP | 15.0 V @ 33.3 A - Limits downstream IC stress during 10/1000 µs surges |
| PPP | 500 W - Sustains high-energy transients without failure per IEC61000-4-5 Class 4 |
| ID @ VWM | <50 µA - Minimizes quiescent power loss in battery-backed or low-power systems |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with 1.70–2.26 mm body width and thermal pad compatibility |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case with cathode band marking; C-bend tin-lead or RoHS matte-tin plated leads; moisture sensitivity level 1 (no dry pack required); weight 0.064 g; JEDEC-compliant footprint with 6.22 mm length, 1.90 mm width, and 2.39 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node to enable unidirectional clamping |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., +12 V rail); marked by visible band for orientation |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant "e3" suffix | Matte-tin plating meets J-STD-020B Level 1 moisture sensitivity and Pb-free assembly requirements |
| Tape-and-reel packaging | TR13 variant supplies 2500 units per 13-inch reel per EIA-481-1-A standard for automated SMT placement |
| Fast clamping response | <100 ps theoretical turn-on time ensures protection against nanosecond-scale ESD events |
| Secondary lightning compliance | Validated per IEC61000-4-5 with 42 Ω source impedance up to Class 4 (VWM ≤ 12 V) |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 12 V DC input rail in programmable logic controller (PLC) power stage exposed to relay coil flyback and nearby motor switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp inductive kickback transients. Use Value: Limits voltage excursion to ≤15.0 V during 33.3 A surges, preventing damage to upstream DC-DC controllers and downstream microcontrollers. | Use Scenario: LIN bus line in door module subjected to ESD discharge and load dump coupling from adjacent 12 V circuits. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN data line referenced to local ground, absorbing ±8 kV contact ESD per IEC61000-4-2. Use Value: Sub-100 ps response prevents data corruption during ESD events; <50 µA leakage avoids bus bias drift in low-current LIN receivers. |
| Telecom Interface Surge Protection | Consumer USB Port ESD Guard |
Use Scenario: RS-485 transceiver interface on base station backplane encountering induced RF and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional-capable family member (with CA suffix) used in differential pair protection; SMAJ8.0E3/TR13 serves as unidirectional rail clamp. Use Value: 500 W peak power rating handles multiple IEC61000-4-5 surges without parameter shift; DO-214AC footprint allows compact dual-diode layout. | Use Scenario: VBUS line in USB 2.0 host port where hot-plug insertion causes capacitive discharge transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5 V supply line, positioned upstream of USB switch and PHY IC. Use Value: 8.0 V VWM provides 0.5 V margin above nominal 5 V rail while enabling robust 15.0 V clamping - preserving USB electrical compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Same VWM, VBR, VC, and PPP; non-RoHS tin-lead plating; no "e3" or "TR" suffix | Not suitable for Pb-free manufacturing; requires leaded solder process | Select SMAJ8.0A only for legacy leaded assembly or MIL-PRF-19500 JANTX screening (add MX prefix) |
| SMCJ8.0A | Same VWM and VBR, but 1500 W PPP rating and DO-214AB (SMC) package (larger footprint) | Higher surge capacity for harsher environments; incompatible with SMA land pattern | Choose SMCJ8.0A when system-level testing requires >500 W surge margin or higher IPP endurance |
Compared with SMAJ8.0A and SMCJ8.0A, SMAJ8.0E3/TR13 uniquely combines RoHS compliance, tape-and-reel automation readiness, and DO-214AC space efficiency - making it optimal for high-volume consumer and industrial SMT production where footprint, environmental compliance, and assembly scalability are prioritized.
Availability
SMAJ8.0E3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and telecom interface circuits requiring stable component supply across multi-year production cycles.
Supply support for SMAJ8.0E3/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 cost-effective, high-speed transient suppression in surface-mount power and signal lines - targeting applications demanding IEC61000-4-2/4-4/4-5 compliance with minimal PCB area.
FAQ
What is the clamping voltage of SMAJ8.0E3/TR13 at its rated peak pulse current?
The SMAJ8.0E3/TR13 has a maximum clamping voltage (VC) of 15.0 V at 33.3 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured per Figure 2 in the official Microsemi datasheet MSC0270A and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMAJ8.0E3/TR13 RoHS compliant and what does the "e3" suffix indicate?
Yes, SMAJ8.0E3/TR13 is RoHS compliant. The "e3" suffix denotes annealed matte-tin plating per J-STD-020B Level 1 moisture sensitivity, eliminating lead content and supporting Pb-free reflow processes. This specification is confirmed in the Microsemi datasheet MSC0270A Rev L, where "e3" is explicitly defined as the RoHS-compliant plating option for the SMAJ5.0–170CA series.
What is the standoff voltage rating and how does it relate to circuit operation?
The SMAJ8.0E3/TR13 has a reverse standoff voltage (VWM) of 8.0 V, meaning it remains non-conductive under continuous reverse bias up to this level. This allows safe use on 5 V or 12 V DC rails with appropriate derating - for example, protecting a 5 V USB VBUS line where 8.0 V VWM provides 0.5 V margin above nominal while enabling robust 15.0 V clamping during transients.
Does SMAJ8.0E3/TR13 support automated SMT assembly and what packaging format is used?
Yes, SMAJ8.0E3/TR13 is supplied in EIA-481-1-A compliant tape-and-reel format: 12 mm carrier tape with 2500 units per 13-inch reel (denoted by "TR13"). This configuration is validated for high-speed pick-and-place machines and matches industry-standard feeder specifications - confirmed in the "TAPE & REEL option" section of the Microsemi MSC0270A datasheet.
What standards does SMAJ8.0E3/TR13 meet for surge and ESD protection?
SMAJ8.0E3/TR13 is verified per IEC61000-4-2 (ESD ±8 kV contact), IEC61000-4-4 (EFT 4 kV), and IEC61000-4-5 (lightning surge with 42 Ω source up to Class 4). These certifications are documented in the Applications/Benefits section of the MSC0270A datasheet, where SMAJ5.0–SMAJ12A devices (including SMAJ8.0E3/TR13) are explicitly listed for Class 4 secondary lightning protection.
SMAJ8.0E3/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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 33.3A
- 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)
SMAJ8.0E3/TR13 FAQ
1.How can I place an order for SMAJ8.0E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ8.0E3/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 SMAJ8.0E3/TR13 reliable?
The price and inventory of SMAJ8.0E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ8.0E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ8.0E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ8.0E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ8.0E3/TR13?
SMAJ8.0E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ8.0E3/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 SMAJ8.0E3/TR13?
For technical support, including SMAJ8.0E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ8.0E3/TR13 requirements.
6.How does Aetrix verify that SMAJ8.0E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ8.0E3/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 SMAJ8.0E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ8.0E3/TR13?
All SMAJ8.0E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ8.0E3/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 SMAJ8.0E3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ8.0E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ8.0E3/TR13 Tags
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