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Microchip Technology SMAJ160CAE3/TR13
- Part No.:
- SMAJ160CAE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ160CAE3/TR13.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,676
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Product details
Overview
SMAJ160CAE3/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 160 V standoff voltage (VWM), 287 A peak pulse current (IPP @ 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 SMAJ160CAE3/TR13 datasheet, SMAJ160CAE3/TR13 pinout, SMAJ160CAE3/TR13 application, or SMAJ160CAE3/TR13 equivalent, key selection criteria include bidirectional clamping capability, IEC61000-4-5 Class 1 compliance (42 Ω source), RoHS-compliant matte-tin plating, DO-214AC package thermal performance, and tape-and-reel delivery format (TR13).
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage ≥178 V (min) at 1 mA test current and clamping response <5 ns - enabling effective suppression of fast-rising transients from inductive switching, RF coupling, and electrostatic discharge. Its low standby leakage (<1.7 µA @ VWM) ensures minimal impact on high-impedance sensing circuits.
Rated for -65°C to +150°C operation and mounted on FR4 with 1 oz Cu, it delivers 15°C/W junction-to-lead thermal resistance and supports 5 W steady-state power dissipation at 75°C lead temperature - making it suitable for thermally constrained PCB layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 120–150 V DC systems. |
| VBR (min) | 178 V @ 1 mA - Minimum breakdown threshold; ensures reliable turn-on only during overvoltage events, not normal operation. |
| VC @ IPP | 287 V @ 287 A - Clamped voltage under 10/1000 µs surge; limits downstream component stress to ≤287 V. |
| PPP | 500 W - Peak pulse power handling capacity; sustains single-event surges up to 500 W without degradation. |
| IPP | 287 A - Peak surge current capability; meets IEC61000-4-5 Level 4 (12 Ω source) and Class 1 (42 Ω source) requirements. |
| ID @ VWM | ≤1.7 µA - Ultra-low leakage current; avoids loading precision analog or battery-backed circuits. |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with wide leads for enhanced thermal dissipation and mechanical robustness. |
Pinout & Package
DO-214AC (SMA) package: void-free epoxy body meeting UL94V-0; C-bend (modified J-bend) leads with RoHS-compliant annealed matte-tin plating; polarity unmarked for bidirectional devices; weight 0.064 g; moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | No polarity marking; terminals interchangeable - enables placement flexibility and eliminates orientation errors during automated assembly. |
| Case / Body | Thermal and mechanical interface | Transfer-molded thermoset epoxy provides electrical isolation, mechanical stability, and 15°C/W junction-to-lead thermal resistance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables symmetrical protection on AC-coupled or floating lines without external diode pairing - reduces BOM count and layout area. |
| IEC61000-4-5 Class 1 compliance | Validated for secondary lightning surges with 42 Ω source impedance up to 160 V standoff - meets industrial and telecom infrastructure immunity requirements. |
| RoHS-compliant "e3" suffix | Matte-tin plating per MIL-STD-750 Method 2026 - ensures solderability, corrosion resistance, and environmental compliance without lead content. |
| Tape-and-reel packaging (TR13) | 2500 units per 13-inch reel per EIA-481-1-A - optimized for high-volume SMT placement with consistent feed reliability and traceable lot control. |
| Fast transient response | <5 ns clamping delay for bidirectional mode - captures sub-microsecond ESD events (IEC61000-4-2) before sensitive ICs experience latch-up or gate oxide damage. |
Applications
| Industrial PLC Analog Inputs | Telecom DC Power Distribution |
|---|---|
|
Use Scenario: Protection of 4–20 mA current-loop inputs against induced surges from nearby motor drives or relay switching. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across input terminals to shunt transient energy to ground before reaching precision op-amps or ADC front-ends. Use Value: Maintains signal integrity by limiting input voltage to ≤287 V during 287 A surges - preventing ADC saturation, op-amp rail-to-rail clipping, or sensor damage. |
Use Scenario: Secondary lightning protection on +48 V DC telecom power bus feeding remote radio units and baseband processors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on power rail input, coordinated with upstream fuses and downstream POL converters. Use Value: Withstands 500 W surges while holding rail voltage below 287 V - preserving hold-up time and avoiding brownout resets in critical communication hardware. |
| Automotive Body Control Module (BCM) CAN Bus | Medical Patient Monitoring Signal Lines |
|
Use Scenario: Transient suppression on CAN_H/CAN_L differential pair exposed to load-dump and jump-start conditions in vehicle chassis wiring. IC Role / Device Role / Timing Role: Bidirectional TVS connected line-to-line and line-to-chassis ground to absorb common-mode and differential surges simultaneously. Use Value: Clamps both polarities within <5 ns - ensuring CAN transceivers remain operational during ISO 7637-2 Pulse 1/2/5a events without bus arbitration loss. |
Use Scenario: ESD protection on isolated biopotential electrodes (ECG/EEG) connected to high-impedance instrumentation amplifiers. IC Role / Device Role / Timing Role: Low-leakage (≤1.7 µA) bidirectional clamp placed at connector interface to divert human-body-model (HBM) discharges. Use Value: Prevents amplifier input stage damage while maintaining baseline drift <1 µV/min - critical for diagnostic-grade signal fidelity and regulatory compliance (IEC 60601-1-2). |
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 SMAJ160CA | Same VWM (160 V), VC (287 V), IPP (287 A); identical DO-214AC package; RoHS-compliant but no "e3" suffix designation. | No TR13 tape-and-reel option standard - requires custom ordering for 2500/reel; lacks Microsemi's avionics-grade screening options (MA/MX prefixes). | Select when standard RoHS compliance suffices and volume tape-and-reel is not required; verify reel specification compatibility with SMT feeder. |
| Vishay SMAJ160CAHM3 | Same electrical specs and DO-214AC footprint; "HM3" denotes halogen-free, RoHS-compliant construction; slightly higher VBR min (179 V vs. 178 V). | Qualified to AEC-Q200 for automotive use; includes extended temperature cycling data - preferred for under-hood or ADAS subsystems. | Choose for automotive OEM programs requiring AEC-Q200 qualification; confirm system-level ESD immunity remains unchanged with 1 V higher VBR. |
Compared with SMAJ160CAE3/TR13, Littelfuse SMAJ160CA offers identical clamping performance but lacks pre-configured TR13 packaging, while Vishay SMAJ160CAHM3 adds AEC-Q200 qualification at the cost of minor VBR variance - making Microsemi's version optimal for industrial telecom and medical applications requiring certified RoHS and precise tape-and-reel logistics.
Availability
SMAJ160CAE3/TR13 is available at Aetrix Electronics and suitable for industrial PLC analog inputs, telecom DC power distribution, and medical patient monitoring signal lines requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMAJ160CAE3/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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The SMAJ series was engineered for robust, surface-mount transient suppression in harsh environments - targeting applications where failure modes must be mitigated without compromising signal integrity or thermal performance.
FAQ
What does the "CA" suffix indicate in SMAJ160CAE3/TR13?
The "CA" suffix denotes a bidirectional configuration - meaning SMAJ160CAE3/TR13 clamps transients equally in both polarities, unlike unidirectional "A" variants that conduct only in reverse bias. This makes SMAJ160CAE3/TR13 ideal for AC-coupled lines, differential buses like CAN, or floating inputs where polarity reversal may occur during surge events.
Is SMAJ160CAE3/TR13 compliant with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ160CAE3/TR13 is rated for IEC61000-4-5 secondary lightning protection: it meets Class 1 (42 Ω source) up to 160 V VWM, and Class 4 (12 Ω source) for lower-voltage variants. Its 287 A IPP and 287 V VC ensure clamping stays within safe margins for downstream 300 V-rated components during standardized surge waveforms.
What is the significance of the "e3" and "TR13" suffixes in SMAJ160CAE3/TR13?
The "e3" suffix confirms RoHS compliance via annealed matte-tin plating per MIL-STD-750 Method 2026, while "TR13" specifies EIA-481-1-A tape-and-reel packaging: 2500 units per 13-inch reel. Together, they guarantee environmentally compliant manufacturing and SMT-ready logistics - critical for high-volume, auditable production runs using SMAJ160CAE3/TR13.
Can SMAJ160CAE3/TR13 replace a unidirectional TVS like SMAJ160A in an existing design?
No - SMAJ160CAE3/TR13 is bidirectional and lacks polarity marking, whereas SMAJ160A is unidirectional with cathode banding. Substituting SMAJ160CAE3/TR13 for SMAJ160A may cause unintended conduction in forward bias. If bidirectional behavior is acceptable, verify circuit topology supports symmetrical clamping; otherwise, retain the unidirectional variant.
What thermal derating applies to SMAJ160CAE3/TR13 in a typical FR4 PCB layout?
When mounted on FR4 with 1 oz copper and Microsemi's recommended pad layout, SMAJ160CAE3/TR13 exhibits 80°C/W junction-to-ambient thermal resistance. Its steady-state power rating drops from 5 W at 75°C lead temperature to ~1.56 W at 25°C ambient - requiring thermal relief traces or local copper pours if sustained power dissipation exceeds 1.5 W in enclosed enclosures.
SMAJ160CAE3/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):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 1.9A
- 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)
SMAJ160CAE3/TR13 FAQ
1.How can I place an order for SMAJ160CAE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ160CAE3/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 SMAJ160CAE3/TR13 reliable?
The price and inventory of SMAJ160CAE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ160CAE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ160CAE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ160CAE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ160CAE3/TR13?
SMAJ160CAE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ160CAE3/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 SMAJ160CAE3/TR13?
For technical support, including SMAJ160CAE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ160CAE3/TR13 requirements.
6.How does Aetrix verify that SMAJ160CAE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ160CAE3/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 SMAJ160CAE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ160CAE3/TR13?
All SMAJ160CAE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ160CAE3/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 SMAJ160CAE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ160CAE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ160CAE3/TR13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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