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Diodes Incorporated SMAJ160A-13
- Part No.:
- SMAJ160A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ160A-13.pdf
- Description:
- TVS DIODE 160VWM 259VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:8,737
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Product details
Overview
SMAJ160A-13 from Diodes Incorporated is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 160V reverse standoff voltage (VRWM), 178–197V breakdown voltage (VBR) at 1mA, 259V maximum clamping voltage (VC) at 1.5A peak pulse current (IPP), and operates from –55°C to +150°C.
For engineers reviewing the SMAJ160A-13 datasheet, SMAJ160A-13 pinout, SMAJ160A-13 application, or SMAJ160A-13 equivalent, key selection criteria include clamping performance under 8.3ms surge waveforms, unidirectional polarity for DC-biased interfaces, RoHS-compliant SMA package compatibility, and steady-state power dissipation up to 1.0W at TL = 75°C.
Technical Context
This TVS diode uses glass-passivated silicon junction construction to achieve fast response time (<1ps) and stable clamping during transient events such as ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges (IEC 61000-4-5). Its unidirectional configuration enables integration into polarized DC circuits without reverse leakage concerns above VRWM.
The device is rated for 400W non-repetitive peak pulse power (PPK) with derating above TA = 25°C, supports 40A forward surge current (IFSM) under 8.3ms half-sine waveform, and maintains <5μA reverse leakage (IR) at VRWM - critical for low-power sensor and communication interface protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPK) | 400W - sustains single high-energy transients without failure per JEDEC test conditions |
| Reverse Standoff Voltage (VRWM) | 160V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 178–197V @ IT = 1mA - ensures reliable triggering margin above operating rail |
| Clamping Voltage (VC) | 259V @ IPP = 1.5A - limits downstream voltage stress during 8.3ms surge events |
| Peak Pulse Current (IPP) | 1.5A - derived from VC and PPK; defines maximum surge current it can safely clamp |
| Operating Temperature (Tj) | –55°C to +150°C - supports automotive under-hood and industrial control environments |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with automated PCB assembly |
Pinout & Package
SMAJ160A-13 is housed in the standard SMA (DO-214AC) plastic package with two terminals: cathode (marked by band) and anode. The package measures 4.00–4.60mm in length (B), 2.29–2.92mm in width (A), and 1.27–1.63mm in height (C), with gull-wing leads for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; enables unidirectional clamping |
| Cathode (banded end) | Current exit terminal during reverse-biased clamping | Connected to higher-potential rail (e.g., VCC); conducts only when VRWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| 400W Peak Pulse Power | Enables robust protection against IEC 61000-4-5 Level 3 (1kV/2Ω) surges on 24–48V industrial buses |
| Glass-Passivated Die | Improves long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| Fast Response Time (<1 ps) | Clamps transients before sensitive ICs experience overstress - critical for USB, RS-485, and CAN interfaces |
| RoHS-Compliant Matte Tin Finish | Supports lead-free reflow profiles and eliminates tin whisker risk in high-reliability applications |
| UL 94V-0 Molded Case | Meets flammability requirements for enclosed industrial and medical equipment enclosures |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24V DC input channels on programmable logic controller backplanes exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of optocouplers and level translators. Use Value: Limits transient voltage to ≤259V, preventing damage to 3.3V/5V interface ICs while maintaining <5μA leakage at nominal 24V operation. |
Use Scenario: LIN bus and sensor supply lines in BCM modules subject to ISO 7637-2 pulse 1/2a/3a transients. IC Role / Device Role / Timing Role: Unidirectional TVS on 12V battery-fed rails feeding microcontroller peripherals. Use Value: Clamps 100V/500ms load dump spikes to safe levels without affecting normal 12V regulation or introducing capacitive loading on LIN data lines. |
| Telecom Power Feeds | Medical Equipment DC Power Entry |
Use Scenario: -48V DC telecom power distribution boards where lightning-induced surges propagate from outdoor cabling. IC Role / Device Role / Timing Role: First-stage protection before DC-DC converters and hot-swap controllers. Use Value: Absorbs 400W surge energy within 8.3ms, reducing downstream voltage overshoot to <260V and preserving converter enable thresholds. |
Use Scenario: Mains-derived 24V/48V internal power rails in diagnostic imaging systems requiring IEC 60601-1 compliance. IC Role / Device Role / Timing Role: Secondary overvoltage guard on isolated secondary-side supplies. Use Value: Provides reinforced insulation barrier with UL 94V-0 housing and 150°C junction rating, supporting extended thermal aging validation. |
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-TP from Microchip | Same VRWM (160V), but higher VC = 275V @ IPP = 1.45A; slightly lower PPK = 350W | Limited availability in tape-and-reel; no RoHS exemption documentation provided | Select if legacy Microchip BOM alignment required; verify clamping margin with system-level surge testing |
| P6SMB160A from ON Semiconductor | Identical VRWM and VC specs; same SMA package; 10% tighter VBR tolerance (178–193V vs. 178–197V) | Higher IR = 10μA @ VRWM - may impact ultra-low-power sensor bias networks | Prefer for designs requiring tighter breakdown consistency; confirm leakage sensitivity in high-impedance analog front-ends |
Compared with SMAJ160A-13, SMAJ160A-TP offers reduced surge handling and less transparent compliance documentation, while P6SMB160A trades marginally tighter VBR for higher leakage - making the Diodes part optimal for cost-sensitive, thermally demanding industrial applications where 5μA leakage and full 400W rating are decisive.
Availability
SMAJ160A-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, telecom power feeds, and medical equipment DC power entry requiring stable component supply across multi-year production cycles.
Supply support for SMAJ160A-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
SMAJxxxA is part of Diodes' industry-standard TVS diode portfolio targeting board-level surge and ESD protection in automotive, industrial, and communications infrastructure - emphasizing reliability, JEDEC-compliant surge ratings, and broad voltage coverage.
FAQ
What is the polarity configuration of SMAJ160A-13?
SMAJ160A-13 is a unidirectional TVS diode, indicated by the absence of the "C" suffix. It functions as a reverse-biased zener-like clamp: the banded end is the cathode and must be connected to the higher-potential side of the protected line (e.g., VCC or signal high), while the anode connects to ground or lower potential. This configuration blocks conduction under normal operation but triggers rapidly during positive transients.
Does SMAJ160A-13 meet automotive AEC-Q200 requirements?
No - SMAJ160A-13 is not AEC-Q200 qualified. While its operating temperature range (–55°C to +150°C) overlaps with automotive Grade 1, Diodes Incorporated does not list this part in its AEC-Q200-certified TVS portfolio. For automotive applications requiring qualification, consider the AEC-Q200-compliant D3V3M1UQ series or contact Diodes for qualified alternatives with validated stress test reports.
Can SMAJ160A-13 be used in bidirectional signal line protection?
No - SMAJ160A-13 is unidirectional and unsuitable for AC or bidirectional signal lines (e.g., RS-485, CAN, USB D+/D−) without external circuitry. For such applications, use the bi-directional variant SMAJ160CA-13, which has symmetric clamping in both directions and no polarity marking. Using the unidirectional version on AC signals risks forward conduction and permanent damage during negative half-cycles.
What is the maximum allowable PCB pad temperature during reflow soldering?
The SMAJ160A-13 SMA package is rated for standard lead-free reflow profiles per J-STD-020. Peak temperature must not exceed 260°C for ≤30 seconds, with ramp-up rate ≤3°C/s and ramp-down rate ≤6°C/s. Exceeding these limits risks internal die bond degradation or molding compound delamination, potentially increasing leakage or reducing clamping consistency.
SMAJ160A-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 1.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
SMAJ160A-13 FAQ
1.How can I place an order for SMAJ160A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ160A-13 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 SMAJ160A-13 reliable?
The price and inventory of SMAJ160A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ160A-13 is usually 5 days.
3.What payment methods are accepted for SMAJ160A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ160A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ160A-13?
SMAJ160A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ160A-13 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 SMAJ160A-13?
For technical support, including SMAJ160A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ160A-13 requirements.
6.How does Aetrix verify that SMAJ160A-13 is sourced from the original manufacturer or authorized distributors?
All SMAJ160A-13 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 SMAJ160A-13 meets industry standards.
7.What is the process for return or replacement of SMAJ160A-13?
All SMAJ160A-13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ160A-13, 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 SMAJ160A-13 part is unused and in its original packaging.
Return procedure for SMAJ160A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ160A-13 Tags
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