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onsemi SA16ARL
- Part No.:
- SA16ARL
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
SA16ARL.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
SA16ARL from ON Semiconductor is a unidirectional 500 W peak power MiniMOSORB Zener transient voltage suppressor (TVS) in axial leaded Surmetic package (Case 59AA). It features a 16 V working peak reverse voltage (VRWM), clamps at ≤26 V @ 19.2 A IPP, and delivers sub-1 ns response time for protecting DC power rails and signal lines in industrial power supplies and medical equipment.
For engineers reviewing the SA16ARL datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin vs. system operating voltage, surge current capability under 8.3 ms pulse conditions, UL 497B recognition for isolated loop protection, and Pb-free tape-and-reel availability (SA16ARLG).
Technical Context
The SA16ARL operates as a unidirectional Zener-based TVS diode, leveraging avalanche breakdown to clamp transients above its 16 V VRWM. Its low zener impedance and fast <1.0 ns response enable effective suppression of ESD (Class 3 >16 kV HBM) and lightning-induced surges in DC circuits.
It is rated for 500 W nonrepetitive peak power at TL ≤ 25°C with 1.0 ms pulse width per Figure 4, derating linearly above 25°C ambient. Steady-state dissipation is 3.0 W at TL = 75°C with 3/8″ lead length, and thermal resistance junction-to-lead is 33.3°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 16 V - Maximum continuous reverse operating voltage before clamping begins |
| IPP | 19.2 A - Peak pulse current supported at 1.0 ms pulse width without damage |
| VC @ IPP | ≤26 V - Clamping voltage seen by protected circuit during full 19.2 A surge |
| VBR @ IT | 17.8–19.7 V @ 1 mA - Breakdown voltage range defining turn-on threshold |
| Response Time | <1.0 ns - Enables suppression of fast-rising transients before downstream ICs are stressed |
| ESD Rating | Class 3 (>16 kV HBM) - Meets IEC 61000-4-2 Level 4 for system-level ESD immunity |
| UL Recognition | UL 497B (QVGV2) - Certified for isolated loop circuit protection in safety-critical systems |
Pinout & Package
SA16ARL is housed in an axial-leaded Surmetic plastic package (Case 59AA), equivalent in outline to DO-204AC/DO-15, with cathode indicated by a polarity band. Leads are solderable per J-STD-020, max 230°C for 10 s at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line; conducts when reverse voltage exceeds VRWM to shunt surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| 500 W peak pulse power | Supports robust surge immunity per IEC 61000-4-5 (1.2/50 μs + 8/20 μs combo wave) up to level 4 in 12 V systems |
| UL 497B recognition | Validated for use in telecom and industrial isolated loop interfaces requiring certified surge protection |
| Pb-free tape-and-reel packaging | SA16ARLG variant enables RoHS-compliant automated SMT assembly with 5000-unit reels |
| Low leakage <1 μA @ VRWM | Minimizes standby power loss in battery-backed or energy-sensitive applications |
| Temperature coefficient spec'd | Ensures predictable VBR drift across −55°C to +175°C operating range for automotive under-hood use |
Applications
| Industrial Power Supply Protection | Medical Equipment Input Stage |
|---|---|
Use Scenario: 24 V DC input rail in programmable logic controller (PLC) power module exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between input and chassis ground to clamp surges before they reach upstream rectifier and regulator ICs. Use Value: Clamps 19.2 A surge at ≤26 V, maintaining safe margin below 30 V maximum rating of downstream MOSFETs and controllers. | Use Scenario: Patient-connected sensor interface in diagnostic ultrasound system requiring isolation barrier compliance per IEC 60601-1. IC Role / Device Role / Timing Role: UL 497B-recognized TVS on secondary-side analog front-end supply rail to protect ADCs and op-amps from coupling transients. Use Value: Validated isolation loop protection ensures no degradation of creepage/clearance integrity during surge events. |
| Telecom Line Card Surge Suppression | Automotive Body Control Module (BCM) |
Use Scenario: 12 V auxiliary power rail on Ethernet switch line card subject to induced lightning surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary clamping device on DC feed line, coordinated with GDT or polymer PTC for staged overvoltage protection. Use Value: Sub-1 ns response captures fast edge transients before secondary protection activates, reducing let-through energy. | Use Scenario: 12 V battery-supplied microcontroller power domain in BCM exposed to ISO 7637-2 Pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Standoff TVS on VDD rail to absorb repetitive load-dump energy without degradation over vehicle lifetime. Use Value: 500 W peak rating and 175°C max junction temperature support sustained operation in high-ambient engine bay environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | Surface-mount SMB package (vs. axial SA16ARL); same VRWM (16 V), slightly higher VC (26.5 V @ 18.2 A) | Requires PCB rework for SMT vs. through-hole; better for space-constrained designs | Select SMBJ16A when board real estate is limited and automated placement is preferred |
| P6KE16A | DO-15 axial package; lower peak power (600 W vs. 500 W), higher VC (27.7 V @ 18.2 A), no UL 497B recognition | Lacks safety certification for isolated loop use; suitable only for non-safety-critical industrial rails | Select P6KE16A only where UL recognition is not required and cost is primary driver |
Compared with SMBJ16A and P6KE16A, SA16ARL offers UL 497B certification and optimized clamping for 12–24 V systems, making it the preferred choice for medical and telecom applications requiring regulatory compliance and precise voltage margining.
Availability
SA16ARL is available at Aetrix Electronics and suitable for industrial power supplies, medical equipment input stages, telecom line cards, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for SA16ARL 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
ON Semiconductor (now onsemi) is a global semiconductor supplier specializing in power management, analog, sensors, and discrete devices for automotive, industrial, cloud, and medical markets.
The SA5.0A Series was designed specifically for high-energy transient suppression in DC power and signal lines, targeting applications demanding UL-certified, high-reliability TVS protection with tight clamping voltage control.
FAQ
What is the clamping voltage of SA16ARL at its rated peak pulse current?
The SA16ARL clamps at ≤26 V when subjected to its rated peak pulse current of 19.2 A (1.0 ms pulse width per Figure 4). This value is measured under standardized nonrepetitive surge conditions and defines the maximum voltage imposed on the protected circuit during transient events, ensuring compatibility with 24 V nominal systems where headroom below 30 V is critical for downstream IC survival.
Is SA16ARL certified for safety-critical isolation applications?
Yes, SA16ARL carries UL 497B recognition (File #E116110, QVGV2 category) for isolated loop circuit protection. This certification validates performance in tests including strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge - confirming suitability for medical and telecom isolation barriers where regulatory compliance is mandatory, unlike generic TVS diodes lacking such recognition.
What is the difference between SA16ARL and SA16ARLG?
SA16ARL is the standard tin-lead axial leaded version, while SA16ARLG is the Pb-free variant - identical electrically and mechanically but compliant with RoHS Directive 2011/65/EU. Both share Case 59AA packaging and 5000-unit tape-and-reel format; SA16ARLG is required for new designs targeting EU markets or environmentally restricted supply chains.
Can SA16ARL be used in automotive applications?
Yes, SA16ARL supports automotive use with its −55°C to +175°C operating temperature range, ISO 7637-2 Pulse 5a compatibility (via 500 W peak rating), and robust construction. It is commonly deployed in body control modules and infotainment power rails; however, qualification to AEC-Q101 requires additional testing beyond datasheet specs and must be confirmed per customer qualification plan.
What is the maximum steady-state power dissipation for SA16ARL at 75°C lead temperature?
At a lead temperature (TL) of 75°C, SA16ARL has a steady-state power dissipation rating of 3.0 W with 3/8″ lead length. Derating begins above 75°C at 30 mW/°C, reaching zero dissipation at 175°C. This rating governs continuous leakage power handling and must be verified against actual board layout and airflow in thermally constrained environments.
SA16ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- -
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SA16ARL FAQ
1.How can I place an order for SA16ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for SA16ARL 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 SA16ARL reliable?
The price and inventory of SA16ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA16ARL is usually 5 days.
3.What payment methods are accepted for SA16ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA16ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA16ARL?
SA16ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA16ARL 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 SA16ARL?
For technical support, including SA16ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA16ARL requirements.
6.How does Aetrix verify that SA16ARL is sourced from the original manufacturer or authorized distributors?
All SA16ARL 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 SA16ARL meets industry standards.
7.What is the process for return or replacement of SA16ARL?
All SA16ARL units undergo pre-shipment inspection (PSI). If there is an issue with SA16ARL, 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 SA16ARL part is unused and in its original packaging.
Return procedure for SA16ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA16ARL Tags
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