My Inquiry
My Account
Microchip Technology SMAJ160E3/TR13
- Part No.:
- SMAJ160E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ160E3/TR13.pdf
- Description:
- TVS DIODE 160VWM 287VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,729
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ160E3/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 160 V standoff voltage (VWM), 287 A peak pulse current (IPP) at 10/1000 µs, 287 V clamping voltage (VC), and 500 W peak pulse power dissipation - deployed in telecom power supplies, industrial I/O modules, and automotive body control units.
For engineers reviewing the SMAJ160E3/TR13 datasheet, SMAJ160E3/TR13 pinout, SMAJ160E3/TR13 application, or SMAJ160E3/TR13 equivalent, key selection criteria include its unidirectional polarity, DO-214AC (SMA) package compatibility, IEC61000-4-5 Class 1/2 compliance with 42 Ω source impedance, and RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, triggering at minimum 178 V breakdown voltage (VBR) with 1 mA test current. Its sub-100 ps theoretical response time enables effective suppression of ESD (IEC61000-4-2) and EFT (IEC61000-4-4) transients before sensitive downstream circuitry is stressed.
The device is rated for -65 °C to +150 °C operating temperature, exhibits 1.7 µA maximum standby leakage (ID) at VWM, and delivers 5 W steady-state power dissipation at lead temperature (TL) = 75 °C when mounted on FR4 with recommended footprint - confirming suitability for high-reliability, thermally constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 160 V - Maximum continuous DC or RMS voltage the device blocks without conduction. |
| VBR (Min @ IBR) | 178 V @ 1 mA - Guaranteed minimum breakdown threshold ensuring predictable clamping onset. |
| VC @ IPP | 287 V @ 287 A (10/1000 µs) - Clamped voltage seen by protected circuit during worst-case surge. |
| PPP | 500 W - Peak transient energy absorption capacity under standardized surge waveform. |
| ID @ VWM | 1.7 µA - Low leakage preserves efficiency in high-impedance bias networks and battery-powered systems. |
| Package | DO-214AC (SMA) - Industry-standard surface-mount outline with wide leads for thermal relief and mechanical robustness. |
| RoHS Status | e3 suffix - Matte-tin plating compliant with EU RoHS Directive 2011/65/EU and J-STD-020B Level 1 moisture sensitivity. |
Pinout & Package
DO-214AC (SMA) package: void-free thermosetting epoxy body (UL94V-0), C-bend (modified J-bend) leads, cathode indicated by band. Polarity marking applies only to unidirectional variants like SMAJ160E3/TR13; bidirectional versions omit band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected line | Connected to signal/power rail requiring overvoltage clamping; referenced to ground via cathode path. |
| Cathode | High-side connection to system ground | Provides low-impedance surge return path to ground plane; marked by visible band on body. |
Key Features
| Feature | Design Value |
|---|---|
| 500 W peak pulse rating | Enables single-device protection against IEC61000-4-5 secondary lightning surges up to 42 Ω source impedance (Class 1). |
| 178 V minimum breakdown voltage | Guarantees consistent clamping behavior across manufacturing lots and temperature extremes (-65 °C to +150 °C). |
| Sub-100 ps theoretical response | Prevents ESD-induced latch-up or gate oxide damage in CMOS/BiCMOS ICs before transient energy propagates. |
| RoHS-compliant matte-tin plating | Ensures solderability and long-term intermetallic stability under reflow profiles up to 260 °C for 10 s. |
| 1.7 µA max standby leakage | Maintains low quiescent current in always-on monitoring circuits and battery-backed subsystems. |
Applications
| Telecom DC Power Input | Industrial PLC Analog I/O |
|---|---|
Use Scenario: Protection of 48 V DC input stage in base station power converters against induced lightning surges and load dump transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between input rail and chassis ground to limit voltage excursion below 287 V. Use Value: Prevents failure of upstream DC-DC controllers and downstream PMICs during 1 kV/0.5 Ω IEC61000-4-5 tests. |
Use Scenario: Guarding 0–10 V analog sensor inputs in programmable logic controllers exposed to field wiring EFT bursts. IC Role / Device Role / Timing Role: Fast-clamping TVS shunting transients from signal line to local ground before reaching precision ADC front-end. Use Value: Maintains ±0.1% measurement accuracy under repeated IEC61000-4-4 level 4 (4 kV) fast transient events. |
| Automotive Body Control Module | Medical Equipment Power Entry |
Use Scenario: Safeguarding 12 V supply rail in BCM microcontroller power domain against ISO 7637-2 pulse 1/2a/3a transients. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing negative-going load dump spikes while maintaining <1.7 µA leakage at nominal 12 V. Use Value: Eliminates need for additional series resistance or RC filtering, preserving power delivery efficiency. |
Use Scenario: Surge protection on AC/DC adapter output feeding isolated patient-connected monitoring circuits. IC Role / Device Role / Timing Role: Primary clamping element limiting fault voltage to <287 V during 10/1000 µs surges per IEC60601-1 3rd ed. clause 8.8.3. Use Value: Meets creepage/clearance requirements without increasing board area versus through-hole alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ160A-E3/54 | Same VWM (160 V), identical DO-214AC package, but non-RoHS tin-lead plating; 1.9 µA ID vs. 1.7 µA. | Approved for legacy aerospace avionics where tin-lead solder is mandated; not suitable for RoHS-compliant production. | Select SMAJ160A-E3/54 only if tin-lead assembly process is required and RoHS exemption applies. |
| SMBJ160A | Lower 400 W PPP rating, same VWM/VC, SMB (DO-214AA) package - 2.5 mm narrower body than SMAJ's 4.5 mm width. | Used where board space is constrained but surge energy is limited to ≤400 W; thermal resistance higher due to smaller pad area. | Choose SMBJ160A only if layout space is critical and peak surge threat is confirmed ≤400 W per IEC61000-4-5. |
Compared with SMAJ160E3/TR13, SMAJ160A-E3/54 offers identical electrical performance with legacy plating, while SMBJ160A trades 20% lower surge capacity and reduced thermal mass for smaller footprint - neither is pin-compatible without layout revision.
Availability
SMAJ160E3/TR13 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and automotive electronics requiring stable component supply with full RoHS compliance and tape-and-reel packaging (12 mm tape, 2500 per 13-inch reel).
Supply support for SMAJ160E3/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 - emphasizing low leakage, guaranteed VBR tolerance, and robust thermal performance in compact surface-mount form factors.
FAQ
What is the clamping voltage of SMAJ160E3/TR13 under a 10/1000 µs surge?
The SMAJ160E3/TR13 has a maximum clamping voltage (VC) of 287 V when subjected to its rated 287 A peak pulse current (IPP) using the standard 10/1000 µs double-exponential waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMAJ160E3/TR13 unidirectional or bidirectional?
SMAJ160E3/TR13 is a unidirectional TVS diode, indicated by the absence of "C" or "CA" in its part number suffix. It conducts only in reverse bias above its breakdown voltage and features a cathode band for polarity identification - unlike bidirectional variants such as SMAJ160CA.
Does SMAJ160E3/TR13 meet IEC61000-4-5 for lightning surge immunity?
Yes, SMAJ160E3/TR13 is rated for secondary lightning protection per IEC61000-4-5 with 42 Ω source impedance (Class 1) and 12 Ω source impedance (Class 2). Its 500 W peak pulse power and 287 V clamping voltage ensure compliance when used with appropriate PCB layout and grounding practices.
What is the maximum steady-state power dissipation of SMAJ160E3/TR13?
SMAJ160E3/TR13 dissipates up to 5 W continuously when lead temperature (TL) is maintained at 75 °C, or 1.56 W at ambient temperature (TA) = 25 °C on FR4 with 1 oz copper and Microsemi's recommended footprint. Exceeding these limits risks thermal runaway and parametric shift.
What does the "TR13" suffix indicate in SMAJ160E3/TR13?
The "TR13" suffix denotes tape-and-reel packaging: 12 mm carrier tape, 2500 units per 13-inch reel, conforming to EIA-481-1-A standards. This format supports automated SMT placement and ensures controlled moisture exposure (MSL Level 1 - no dry pack required).
SMAJ160E3/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):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 287V
- Current - Peak Pulse (10/1000µs):
- 1.7A
- 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)
SMAJ160E3/TR13 FAQ
1.How can I place an order for SMAJ160E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ160E3/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 SMAJ160E3/TR13 reliable?
The price and inventory of SMAJ160E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ160E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ160E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ160E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ160E3/TR13?
SMAJ160E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ160E3/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 SMAJ160E3/TR13?
For technical support, including SMAJ160E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ160E3/TR13 requirements.
6.How does Aetrix verify that SMAJ160E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ160E3/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 SMAJ160E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ160E3/TR13?
All SMAJ160E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ160E3/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 SMAJ160E3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ160E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ160E3/TR13 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…
