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onsemi SA13ARL
- Part No.:
- SA13ARL
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA13ARL.pdf
- Description:
- TVS DIODE 13VWM 21.5VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,333
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Product details
Overview
SA13ARL from onsemi is a unidirectional 500 W peak power MiniMOSORB Zener transient voltage suppressor (TVS) designed for clamping high-energy transients in DC power rails and signal lines. It features a 13 V working peak reverse voltage (VRWM), 21.5 V maximum clamping voltage at 13 A peak pulse current, <1 µA leakage at VRWM, and sub-1 ns response time. It is used in industrial power supplies and medical equipment for robust overvoltage protection.
For engineers reviewing the SA13ARL datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected ICs' absolute maximum ratings, surge current capability under 1 ms pulses, UL 497B certification for isolated loop circuits, and axial leaded Surmetic package compatibility with through-hole reflow or wave soldering.
Technical Context
The SA13ARL operates as a unidirectional Zener-based TVS diode, conducting only during reverse overvoltage events above its breakdown threshold. Its low zener impedance ensures stable clamping across varying surge currents, while its thermally robust Surmetic axial package (Case 59AA) supports 3.0 W steady-state dissipation at 75°C lead temperature.
It meets UL 497B for isolated loop circuit protection and exhibits Class 3 ESD immunity (>16 kV HBM). The device's temperature coefficient of VBR is specified, enabling predictable clamping behavior across –55°C to +175°C operating range without thermal runaway risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin. |
| VC @ IPP | 21.5 V @ 13 A - Clamped voltage during 1 ms surge; must stay below protected IC's absolute max rating. |
| IPP | 13 A - Peak pulse current capability per 1 ms waveform; defines surge energy handling (500 W peak). |
| IR @ VRWM | <1 µA - Reverse leakage at rated working voltage; ensures negligible standby power loss. |
| VBR @ IT | 14.4–15.9 V @ 1 mA - Breakdown voltage range; determines turn-on consistency and tolerance stack-up. |
| Response Time | <1 ns - Enables suppression of fast transients (e.g., EFT, lightning-induced spikes) before downstream damage. |
| UL Recognition | UL 497B (QVGV2) - Certified for use in isolated loop protectors; validates dielectric withstand and endurance. |
Pinout & Package
Package: Axial-leaded Surmetic plastic case (JEDEC DO-41 compatible), Case 59AA, Pb-free, cathode indicated by band. Dimensions: A = 5.80–7.60 mm length, B = 2.60–3.60 mm diameter, D = 0.71–0.86 mm lead diameter, K = 25.44 mm lead spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surges up to 70 A IFSM. |
| Cathode | Reverse clamping terminal | Connected to protected line; avalanche conduction initiates when reverse voltage exceeds VBR, shunting surge to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 500 W peak pulse power | Handles 1 ms transients up to 13 A without degradation-sufficient for IEC 61000-4-5 Level 4 surges. |
| UL 497B recognition | Validated for isolated loop protection including strike voltage, endurance, and dielectric tests-not just flammability. |
| Class 3 ESD immunity | Withstands >16 kV human body model discharges-eliminates need for additional ESD front-end protection. |
| Low zener impedance | Ensures tight VC variation across production lot and temperature, critical for consistent rail protection. |
| Pb-free Surmetic package | RoHS-compliant axial construction with corrosion-resistant leads and 260°C solderability (10 s at 1/16″ from case). |
Applications
| Industrial Power Supply Protection | Medical Equipment Input Stage |
|---|---|
Use Scenario: Protecting 12 V DC input rails in programmable logic controllers against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between input rail and chassis ground. Use Value: Limits transient voltage to ≤21.5 V, preserving integrity of 24 V-rated DC-DC controllers and preventing latch-up in monitoring ICs. |
Use Scenario: Safeguarding patient-connected analog front-ends in diagnostic imaging systems from ESD and EFT events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated sensor interface lines compliant with IEC 60601-1. Use Value: UL 497B certification ensures compliance with isolation barrier requirements; sub-1 ns response prevents signal corruption during fast transients. |
| Process Control Signal Conditioning | Business Machine Power Sequencing |
Use Scenario: Shielding 4–20 mA current loop receivers in factory automation modules from field wiring surges. IC Role / Device Role / Timing Role: Reverse-biased TVS across loop terminals, referenced to isolated signal ground. Use Value: 13 V VRWM matches typical loop supply headroom; low leakage (<1 µA) avoids measurement error in precision current sensing. |
Use Scenario: Securing 5 V/3.3 V auxiliary rails in multifunction printers during hot-plug USB or network interface events. IC Role / Device Role / Timing Role: Point-of-load TVS on microcontroller VDD lines upstream of LDO regulators. Use Value: Fast clamping prevents brownout resets; axial package allows manual rework and accommodates mixed-technology PCB assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A | Surface-mount SMA package (JEDEC DO-214AC); same VRWM (13 V) but higher VC (21.5 V vs. 23.2 V) and lower IPP (12.3 A). | Requires SMT placement and reflow; unsuitable for through-hole legacy designs or high-vibration environments. | Select when board space is constrained and automated assembly is available; verify thermal relief pad design for 3.0 W dissipation. |
| 1N6132A | Legacy axial TVS (DO-15); identical VRWM (13 V) and VC (21.5 V), but lower peak power (300 W) and no UL 497B recognition. | Lacks certified isolation barrier compliance; limited to non-safety-critical consumer-grade applications. | Acceptable for cost-sensitive, non-certified systems where surge levels are well below IEC 61000-4-5 Level 3. |
Compared with SMAJ13A and 1N6132A, the SA13ARL uniquely combines axial through-hole reliability, UL 497B certification for isolated loops, and full 500 W surge capacity-making it optimal for industrial and medical designs requiring audit-ready compliance and mechanical robustness.
Availability
SA13ARL is available at Aetrix Electronics and suitable for industrial power supplies, medical equipment, and process control systems requiring stable component supply with long-term lifecycle support and RoHS-compliant sourcing.
Supply support for SA13ARL 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and IoT markets.
The SA13ARL belongs to the SA5.0A Series MiniMOSORB TVS family, engineered specifically for high-reliability transient suppression in safety-critical and regulated applications-emphasizing UL certification, surge robustness, and thermal stability in harsh environments.
FAQ
What is the clamping voltage of the SA13ARL under maximum surge conditions?
The SA13ARL has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current (IPP) of 13 A with a 1 ms waveform. This value is measured per Figure 4 in the datasheet and represents the upper limit of voltage seen by downstream components during worst-case transient events. Designers must ensure this clamping level remains safely below the absolute maximum ratings of protected ICs. The SA13ARL maintains this performance across its full operating temperature range.
Does the SA13ARL meet UL 497B certification, and what does that cover?
Yes, the SA13ARL carries UL 497B recognition under file #E116110 for protector classification (QVGV2). This certification covers rigorous testing including strike voltage breakdown, endurance conditioning, temperature cycling, dielectric voltage-withstand, and discharge performance-validating its suitability for isolated loop circuits in industrial and medical systems. Unlike basic flammability-only approvals, UL 497B confirms functional protection integrity, not just material safety.
How does the SA13ARL differ from the SA13AG variant?
The SA13ARL and SA13AG share identical electrical specifications-including VRWM (13 V), VC (21.5 V), and IPP (13 A)-but differ in packaging and shipping format. SA13ARL is supplied in tape-and-reel (5000 units), optimized for automated pick-and-place assembly, while SA13AG comes in 1000-unit boxes for manual or semi-automated insertion. Both are Pb-free and use the same Surmetic axial Case 59AA package with cathode band polarity marking.
Can the SA13ARL be used in bidirectional protection configurations?
No-the SA13ARL is a unidirectional TVS diode and must be used with correct polarity: cathode to the protected line, anode to ground or lower potential. For bidirectional protection (e.g., AC lines or data buses), a separate bidirectional device such as the CA13A or a back-to-back SA13ARL pair would be required. Using SA13ARL in reverse bias beyond its VRWM will cause clamping; forward conduction is limited to 3.5 V at 35 A and is not intended for sustained operation.
What is the thermal derating behavior of the SA13ARL above 75°C lead temperature?
The SA13ARL's steady-state power dissipation (PD) is rated at 3.0 W at TL = 75°C with 3/8″ lead length, and derates linearly at 30 mW/°C above that temperature, reaching zero dissipation at TL ≈ 175°C. This derating applies to continuous power, not transient pulses. For pulsed operation, Figure 1 and Figure 2 in the datasheet define nonrepetitive peak power limits versus pulse width and ambient temperature-critical for surge duty cycle validation in real-world deployments of the SA13ARL.
SA13ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- MiniMosorb™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 23.2A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
SA13ARL FAQ
1.How can I place an order for SA13ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for SA13ARL 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 SA13ARL reliable?
The price and inventory of SA13ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA13ARL is usually 5 days.
3.What payment methods are accepted for SA13ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA13ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA13ARL?
SA13ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA13ARL 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 SA13ARL?
For technical support, including SA13ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA13ARL requirements.
6.How does Aetrix verify that SA13ARL is sourced from the original manufacturer or authorized distributors?
All SA13ARL 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 SA13ARL meets industry standards.
7.What is the process for return or replacement of SA13ARL?
All SA13ARL units undergo pre-shipment inspection (PSI). If there is an issue with SA13ARL, 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 SA13ARL part is unused and in its original packaging.
Return procedure for SA13ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA13ARL 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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