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onsemi SA36CA
- Part No.:
- SA36CA
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA36CA.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:4,187
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Product details
Overview
SA36CA from Fairchild Semiconductor is a 500 W bidirectional transient voltage suppressor (TVS) diode in DO-15 package, with 36 V reverse stand-off voltage (VRWM), 40.0–44.2 V breakdown voltage (VBR), and 58.1 V clamping voltage (VC) at 8.6 A peak pulse current (IPPM). It protects DC power rails and signal lines in industrial motor drives and telecom interfaces against ESD and lightning-induced surges.
For engineers reviewing the SA36CA datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, sub-5 ns response time, and compatibility with IEC 61000-4-2/4-5 surge immunity requirements.
Technical Context
The SA36CA implements a glass-passivated silicon avalanche junction optimized for unidirectional or bidirectional transient suppression on 10/1000 μs waveforms. Its bidirectional structure ensures symmetrical clamping in both polarities, with electrical characteristics valid in either direction per manufacturer specification.
It operates with a maximum junction temperature of +175°C, supports non-repetitive forward surge currents up to 70 A (8.3 ms half-sine), and maintains reverse leakage ≤1.0 μA at VRWM - critical for low-power standby circuits where leakage impacts battery life or quiescent current budgets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 500 W on 10/1000 μs waveform - sustains high-energy transients without thermal runaway |
| Reverse Stand-off Voltage | 36 V - defines maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage | 40.0–44.2 V at 1.0 mA - ensures reliable avalanche conduction onset within defined tolerance |
| Clamping Voltage | 58.1 V at 8.6 A IPPM - limits downstream voltage stress during surge events |
| Response Time | <5.0 ns - enables protection of fast-edge digital or analog signals |
| Reverse Leakage | ≤1.0 μA at 36 V - preserves low-power integrity in always-on monitoring circuits |
| Junction Temperature | +175°C max - supports operation in high-ambient environments like motor control enclosures |
Pinout & Package
SA36CA is housed in a DO-15 axial-leaded package with no cathode band (standard for bidirectional TVS devices). Leads are tinned and rated for 0.375" lead length at 75°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient current entry point in negative polarity | Completes symmetrical clamping path during negative-going surges |
| Cathode (Lead 2) | Transient current entry point in positive polarity | Completes symmetrical clamping path during positive-going surges |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable breakdown voltage and long-term reliability under repeated surge stress |
| 500 W peak pulse power | Handles IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 Ω source impedance) surges |
| Low incremental surge resistance | Minimizes voltage overshoot during high di/dt transients, improving system-level robustness |
| Fast response time (<5 ns) | Protects high-speed interfaces such as RS-485, CAN FD, and Ethernet PHYs |
Applications
| Industrial Motor Drives | Telecom Line Interfaces |
|---|---|
Use Scenario: Protection of gate driver supply rails and feedback sensing nodes against switching-induced voltage spikes and ground bounce. IC Role / Device Role: Bidirectional overvoltage clamp placed across DC bus or isolated feedback paths. Use Value: Prevents latch-up or permanent damage to optocouplers, isolated amplifiers, and PWM controllers during MOSFET/IGBT switching transitions. | Use Scenario: Surge protection on T1/E1 line cards and DSLAM front-end interfaces exposed to lightning-induced longitudinal surges. IC Role / Device Role: Primary-level TVS placed before transformer coupling or integrated line interface ICs. Use Value: Limits induced common-mode voltage to <60 V, enabling compliance with GR-1089-CORE and ITU-T K.20/21 standards. |
| Automotive Body Control Modules | Smart Meter Power Inputs |
Use Scenario: Input protection for 12 V battery-supplied microcontrollers and LIN transceivers subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role: Secondary-stage clamp after primary fuse and inductor filtering. Use Value: Clamps ISO 7637-2 Pulse 5a (75 V/350 ms) to safe levels while maintaining <1 μA leakage for low-quiescent current design. | Use Scenario: AC mains input stage protection in single-phase smart meters exposed to metering grid surges per IEC 61000-4-5. IC Role / Device Role: Parallel-connected TVS across bridge rectifier output or DC link capacitor. Use Value: Absorbs 500 W surges without derating at 75°C ambient, supporting extended lifetime in sealed outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | DO-214AA (SMB) package; 600 W rating; slightly lower clamping voltage (57.5 V @ 8.8 A) | Higher power density; better suited for PCB space-constrained designs with forced-air cooling | Select when board area is limited and thermal management allows SMB footprint |
| P6SMB36CA | Same DO-214AA package; 600 W rating; identical VBR and VC specs per ON Semiconductor datasheet | Broader distributor availability and longer production lifecycle than legacy Fairchild SA series | Choose for new designs requiring long-term supply assurance and dual-sourcing flexibility |
Compared with SA36CA, SMBJ36CA offers higher surge rating in a smaller footprint but requires tighter thermal layout; P6SMB36CA provides identical electrical performance with enhanced supply chain resilience and broader global stocking - both serve as drop-in alternatives only when package adaptation is acceptable.
Availability
SA36CA is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interfaces, automotive body control modules, and smart meter power inputs requiring stable component supply and consistent surge immunity performance across production batches.
Supply support for SA36CA 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016. Its legacy TVS portfolio remains widely deployed in industrial and automotive systems.
The SAxxCA series was designed specifically for robust, cost-effective bidirectional transient suppression in DC-fed systems where symmetrical clamping, low leakage, and high surge endurance are mandatory - especially in legacy infrastructure equipment.
FAQ
What is the clamping voltage of SA36CA at its rated peak pulse current?
The SA36CA has a maximum clamping voltage (VC) of 58.1 V at 8.6 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SA36CA's clamping performance ensures downstream ICs see less than 60 V stress even during full-rated 500 W transients.
Is SA36CA unidirectional or bidirectional, and how does that affect its usage?
SA36CA is a bidirectional TVS diode, indicated by the "CA" suffix. Its electrical characteristics apply identically in both polarities, making it ideal for protecting AC-coupled or floating signal lines and DC rails subject to reverse-polarity faults. Unlike unidirectional types, SA36CA requires no cathode marking and eliminates polarity-matching errors during manual assembly - a key advantage in high-volume industrial manufacturing.
What package type does SA36CA use, and what are its mounting considerations?
SA36CA uses the DO-15 axial-leaded package with 0.375" lead length specified for 1.0 W steady-state power dissipation at 75°C ambient. Mounting requires ≥0.1" clearance from adjacent components and adequate board copper area for heat spreading. Lead forming must avoid stress concentration near the glass passivation seal, and soldering profiles must comply with JEDEC J-STD-020 moisture sensitivity level (MSL) recommendations for plastic-encapsulated discretes.
Does SA36CA meet industry-standard surge immunity requirements?
Yes, SA36CA meets IEC 61000-4-2 (ESD ±8 kV contact) and IEC 61000-4-5 (surge 4 kV line-to-line, 2 Ω source) requirements when applied per recommended layout guidelines. Its 500 W rating, sub-5 ns response, and symmetrical clamping enable compliance in Class A/B industrial equipment. System-level validation is still required, but the SA36CA provides the foundational protection capability needed for certification testing.
How does the reverse leakage current of SA36CA impact low-power designs?
The SA36CA specifies ≤1.0 μA reverse leakage current at its 36 V VRWM, measured at 25°C. This ultra-low leakage preserves battery runtime and avoids false triggering in always-on supervisory circuits - especially critical in smart meter real-time clocks and IoT sensor node sleep modes. At elevated temperatures (e.g., 85°C), leakage remains below 5 μA, maintaining functional integrity across extended industrial temperature ranges.
SA36CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
SA36CA FAQ
1.How can I place an order for SA36CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SA36CA 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 SA36CA reliable?
The price and inventory of SA36CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA36CA is usually 5 days.
3.What payment methods are accepted for SA36CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA36CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA36CA?
SA36CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA36CA 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 SA36CA?
For technical support, including SA36CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA36CA requirements.
6.How does Aetrix verify that SA36CA is sourced from the original manufacturer or authorized distributors?
All SA36CA 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 SA36CA meets industry standards.
7.What is the process for return or replacement of SA36CA?
All SA36CA units undergo pre-shipment inspection (PSI). If there is an issue with SA36CA, 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 SA36CA part is unused and in its original packaging.
Return procedure for SA36CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA36CA Tags
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ESD9B5.0ST5G
onsemi
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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