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onsemi SA36ARL
- Part No.:
- SA36ARL
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA36ARL.pdf
- Description:
- TVS DIODE 36VWM 58.1VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,151
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Product details
Overview
SA36ARL from onsemi is a unidirectional MiniMOSORB Zener transient voltage suppressor (TVS) designed for overvoltage protection of DC power rails and signal lines. It features a 36 V working peak reverse voltage (VRWM), 58.1 V clamping voltage at 41 A peak pulse current, 500 W peak pulse power rating (1 ms), <1.0 ns response time, and UL 497B recognition for isolated loop circuit protection.
For engineers reviewing the SA36ARL datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM matching system operating voltage, clamping voltage margin relative to protected IC absolute maximum ratings, surge current capability under IEC 61000-4-5 waveform conditions, and axial leaded Surmetic package compatibility with through-hole PCB assembly and thermal derating requirements.
Technical Context
The SA36ARL operates as a voltage-clamping device that remains high-impedance below VRWM (36 V) and rapidly avalanches into low-impedance conduction above its breakdown voltage (40–44.2 V @ 1 mA). Its Zener-based structure provides precise, repeatable clamping with low dynamic impedance and minimal leakage (<1 µA @ VRWM).
It is rated for 500 W nonrepetitive peak pulse power per 1 ms waveform (Figure 4), with thermal derating to 3.0 W steady-state at TL ≤ 75°C and junction-to-lead thermal resistance of 33.3°C/W. The device meets Class 3 ESD immunity (>16 kV HBM) and is UL 497B recognized for protector-class isolation in telecom and industrial interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; must exceed system DC rail or signal swing. |
| VBR (min/typ/max) | 40 / 42.1 / 44.2 V @ 1 mA - Precise avalanche onset ensures predictable turn-on timing and margin control. |
| VC @ IPP | 58.1 V @ 41 A - Clamping voltage during 1 ms surge; defines maximum stress imposed on downstream components. |
| PPK | 500 W @ 1 ms - Peak energy absorption capacity for transient events such as lightning-induced surges or inductive switching spikes. |
| Response Time | <1.0 ns - Enables suppression of fast-rising transients before sensitive logic or analog circuitry is damaged. |
| Leakage Current | <1 µA @ VRWM - Negligible standby power loss and no measurable loading on low-power sensor or reference circuits. |
| UL Recognition | UL 497B (QVGV2) - Certified for use in isolated loop protectors, validating performance in safety-critical telecom and process control interfaces. |
Pinout & Package
SA36ARL is housed in an axial-leaded Surmetic plastic package (Case 59AA), with cathode indicated by a polarity band. Leads are tin-plated, solderable, and rated for 260°C for 10 seconds at 1/16 inch from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lowest potential node; completes clamping path during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., +36 V rail); polarity band identifies this terminal for correct orientation. |
Key Features
| Feature | Design Value |
|---|---|
| 500 W Peak Pulse Power | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation when properly heatsinked via leads. |
| UL 497B Recognition | Validates suitability for certified isolated interface protection in medical equipment and industrial controllers without additional system-level certification burden. |
| <1.0 ns Response Time | Clamps transients faster than propagation delay of most microcontrollers and communication ICs, preventing latch-up or logic upset. |
| Pb-Free Surmetic Package | RoHS-compliant axial construction with corrosion-resistant finish and controlled lead geometry for reliable wave soldering and long-term mechanical stability. |
| Temperature Coefficient | Specified VBR drift (mV/°C) enables accurate clamping margin calculation across -55°C to +175°C operating range. |
Applications
| Industrial Power Supply Protection | Telecom Line Interface |
|---|---|
|
Use Scenario: Protecting 36 V DC input stage of programmable logic controller (PLC) power module against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp positive-going transients before they reach upstream regulators and monitoring ICs. Use Value: Limits voltage excursion to ≤58.1 V during 41 A surges, preserving integrity of 60 V-rated MOSFETs and op-amps in the supply path. |
Use Scenario: Shielding RS-485 transceiver data lines in outdoor base station equipment exposed to lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Paired SA36ARL devices (one per line) referenced to isolated signal ground, providing common-mode surge suppression. Use Value: UL 497B recognition confirms compliance for isolated loop protection, reducing need for external barrier certification in telecom infrastructure. |
| Medical Equipment Input Stage | Automotive Body Control Module |
|
Use Scenario: Safeguarding analog front-end of patient monitor power input where EMI immunity and regulatory traceability are critical. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 36 V auxiliary supply rail feeding ADC reference and sensor bias circuits. Use Value: Sub-µA leakage avoids measurement offset errors; <1 ns response prevents transient coupling into precision analog signal chain. |
Use Scenario: Protecting 36 V battery-fed lighting control outputs in commercial vehicle BCMs subject to ISO 7637-2 pulse 1 and pulse 3a/b. IC Role / Device Role / Timing Role: Low-leakage TVS on switched 36 V output driving LED arrays, placed adjacent to power FET source. Use Value: 500 W rating absorbs repetitive load dump energy; axial package allows direct lead-to-heat sink mounting for thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Surface-mount SMA package (vs. axial); 36 V VRWM, 58.1 V VC @ 43.3 A; lower PPK (400 W). | Requires SMT reflow process; less suitable for high-energy through-hole designs or manual repair. | Choose SMAJ36A only if board space constraints mandate SMT and surge energy stays within 400 W limit. |
| 1.5KE36A | DO-201 package; same VRWM and VC, but higher PPK (1500 W); larger footprint and higher thermal mass. | Better suited for high-repetition surge environments (e.g., motor drive feedback lines) due to superior heat dissipation. | Select 1.5KE36A when system-level testing shows repeated surges exceed SA36ARL's 500 W single-pulse limit. |
Compared with SMAJ36A and 1.5KE36A, SA36ARL offers optimal balance of axial manufacturability, UL 497B certification, and 500 W surge handling-making it preferred for cost-sensitive, safety-certified industrial and medical power inputs where leaded assembly is standard.
Availability
SA36ARL is available at Aetrix Electronics and suitable for industrial power supply protection, telecom line interface, medical equipment input stage, and automotive body control module applications requiring stable component supply and long-term lifecycle support.
Supply support for SA36ARL 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 manufacturer specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.
The SA36ARL belongs to the SA5.0A Series MiniMOSORB family-engineered specifically for robust, standardized transient protection in safety-critical DC power and signal interfaces across industrial automation and medical electronics.
FAQ
What is the clamping voltage of SA36ARL at its rated peak pulse current?
The SA36ARL has a maximum clamping voltage (VC) of 58.1 V at 41 A peak pulse current (IPP), measured per the 1 ms exponential waveform defined in Figure 4 of the datasheet. This value defines the upper voltage limit imposed on protected circuitry during surge events and must be verified against downstream component absolute maximum ratings to ensure safe operation.
Does SA36ARL meet UL 497B requirements for isolated loop protection?
Yes, SA36ARL is explicitly included in onsemi's UL 497B recognition (File #E116110, QVGV2 category) for protector-class isolated loop circuits. This certification covers tests including strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge performance-validating its use in medical and industrial isolation barriers without requiring additional system-level certification.
What is the maximum steady-state power dissipation for SA36ARL at 75°C lead temperature?
SA36ARL is rated for 3.0 W steady-state power dissipation at a lead temperature (TL) of 75°C, with linear derating above that temperature at 30 mW/°C. This rating assumes 3/8 inch lead length and is critical for thermal design in continuously stressed applications such as DC input filtering where transients occur frequently.
How does the SA36ARL differ from SA36AG in terms of packaging and ordering?
SA36ARL is supplied in tape-and-reel format (5000 units per reel) with Pb-free Surmetic axial packaging, while SA36AG is supplied in bulk boxes (1000 units per box) with identical Pb-free construction. Both share identical electrical specifications and Case 59AA mechanical dimensions; the suffix "RLG" denotes tape-and-reel packaging per onsemi's ordering nomenclature.
Is SA36ARL suitable for protecting RS-485 bus lines operating at ±12 V differential?
SA36ARL is not recommended for direct RS-485 differential line protection due to its 36 V VRWM-too high for typical ±12 V bus common-mode ranges. For RS-485, lower VRWM devices like SA12ARL (12 V) or bidirectional variants are appropriate. SA36ARL is intended for 36 V single-ended rails, such as auxiliary power supplies feeding RS-485 transceivers.
SA36ARL 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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
SA36ARL FAQ
1.How can I place an order for SA36ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for SA36ARL 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 SA36ARL reliable?
The price and inventory of SA36ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA36ARL is usually 5 days.
3.What payment methods are accepted for SA36ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA36ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA36ARL?
SA36ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA36ARL 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 SA36ARL?
For technical support, including SA36ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA36ARL requirements.
6.How does Aetrix verify that SA36ARL is sourced from the original manufacturer or authorized distributors?
All SA36ARL 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 SA36ARL meets industry standards.
7.What is the process for return or replacement of SA36ARL?
All SA36ARL units undergo pre-shipment inspection (PSI). If there is an issue with SA36ARL, 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 SA36ARL part is unused and in its original packaging.
Return procedure for SA36ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA36ARL Tags
-
ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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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.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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