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onsemi SA100CA
- Part No.:
- SA100CA
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA100CA.pdf
- Description:
- TVS DIODE 100VWM 162VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:3,780
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Product details
Overview
SA100CA from Fairchild Semiconductor is a bidirectional 500 W transient voltage suppressor (TVS) diode in DO-15 package, designed for clamping ESD and surge transients on data lines and power rails. It features a 100 V reverse stand-off voltage (VRWM), 111–123 V breakdown voltage (VBR), 162 V clamping voltage at 3.1 A peak pulse current, and operates up to +175 °C junction temperature.
For engineers reviewing the SA100CA datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal derating curves, DO-15 mechanical interface details, and real-world surge protection use cases for industrial I/O, telecom interfaces, and DC power input stages.
Technical Context
The SA100CA employs a glass-passivated silicon junction optimized for fast response (<5.0 ns for bidirectional operation) and low incremental surge resistance. Its unidirectional counterpart uses a cathode band; the CA suffix confirms symmetrical bidirectional conduction with identical electrical characteristics in both polarities.
Rated for 500 W peak pulse power on the 10/1000 μs waveform, it sustains 70 A non-repetitive forward surge current (IFSM) and exhibits <1.0 μA reverse leakage at VRWM = 100 V - meeting IEC 61000-4-2 Level 4 and IEC 61000-4-5 surge immunity requirements in properly designed circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 500 W on 10/1000 μs waveform - defines maximum transient energy absorption without failure |
| Clamping Voltage VC | 162 V at IPPM = 3.1 A - limits downstream voltage during surge events |
| Breakdown Voltage VBR | 111–123 V at IT = 1.0 mA - ensures reliable turn-on before system damage threshold |
| Reverse Stand-off VRWM | 100 V - maximum continuous operating voltage before leakage exceeds 1 μA |
| Junction Temperature TJ | +175 °C - enables use in high-ambient environments like motor drives and outdoor telecom |
| Response Time | <5.0 ns (bidirectional) - faster than most microsecond-scale overvoltage events |
| Package | DO-15 - industry-standard axial leaded package with 0.375" lead length for PCB through-hole mounting |
Pinout & Package
DO-15 package: axial-leaded, cylindrical glass body, no polarity marking (bidirectional device). Leads are electrically symmetric; either end may connect to line or ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path terminal | Both terminals function identically - no cathode band; bidirectional clamping across any two points |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and moisture resistance in humid or industrial environments |
| 500 W peak pulse rating | Supports IEC 61000-4-5 4 kV surge testing on 2 Ω source impedance |
| Low incremental surge resistance | Minimizes voltage overshoot during high-di/dt transients, improving clamping precision |
| Fast 5.0 ns response time | Activates before most ESD pulses reach peak amplitude, protecting sensitive receivers |
| 1.0 μA max IR at VRWM | Reduces standby power loss and avoids false triggering in high-impedance sensing circuits |
Applications
| Industrial PLC Analog I/O Protection | Telecom Line Interface Surge Suppression |
|---|---|
Use Scenario: Protecting 4–20 mA current loop inputs from induced lightning surges on factory floor wiring. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across input terminals to shunt >1 kV transients to ground. Use Value: Limits voltage seen by op-amp input stage to ≤162 V, preventing latch-up or permanent damage under IEC 61000-4-5 Level 3 (2 kV) tests. |
Use Scenario: Safeguarding RS-485 transceivers connected to outdoor copper pairs exposed to nearby lightning strikes. IC Role / Device Role / Timing Role: Primary surge suppression element across differential bus lines (A/B) and shield ground. Use Value: Clamps common-mode surges within 5 ns while maintaining signal integrity due to low capacitance (<100 pF at 0 V bias). |
| DC Power Input Stage Protection | Automotive Body Control Module (BCM) Power Rail |
Use Scenario: Guarding 24 V DC power entry point of embedded controllers against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary clamping device after upstream fuse and choke, absorbing residual energy not filtered out. Use Value: Handles 500 W peak pulse without degradation, sustaining 175 °C junction temperature during repeated 12 V/24 V automotive load dump events. |
Use Scenario: Protecting 12 V supply rail of BCM modules from battery reversal and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamp between VBAT and chassis ground, surviving reverse polarity and surge simultaneously. Use Value: Withstands 70 A non-repetitive forward surge (IFSM), enabling robustness against 12 V battery misconnection per ISO 16750-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA (Bourns) | Same VRWM (100 V), lower clamping (165 V @ 3.0 A), SMB package (surface-mount) | Requires PCB rework for SMT vs. through-hole; better for space-constrained designs | Select when board area is limited and automated assembly is preferred |
| P6SMB100CA (Littelfuse) | Identical VRWM (100 V), same DO-214AA package, 165 V clamping @ 3.0 A, 600 W rating | Higher peak power margin but larger footprint; slightly higher leakage (2.0 μA) | Choose for enhanced surge margin where DO-214AA layout already exists |
Compared with SA100CA, SMBJ100CA offers surface-mount compatibility at minor clamping trade-off, while P6SMB100CA provides higher pulse power headroom in a different package - neither is pin-compatible, but all three meet 100 V bidirectional TVS requirements for industrial and automotive surge standards.
Availability
SA100CA is available at Aetrix Electronics and suitable for industrial PLC analog I/O protection, telecom line interface surge suppression, and DC power input stage protection requiring stable component supply and long-lifecycle support.
Supply support for SA100CA 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 leading designer of high-performance analog and discrete semiconductors, acquired by ON Semiconductor in 2016; legacy products maintain full specification compliance and industrial qualification.
The SAxxxC(A) series was engineered specifically for robust, cost-effective transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive power systems where reliability under surge stress is critical.
FAQ
What is the clamping voltage of SA100CA at its rated peak pulse current?
The SA100CA has a maximum clamping voltage (VC) of 162 V when subjected to its peak pulse current (IPPM) of 3.1 A on the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and guarantees that downstream circuitry will not experience voltages exceeding 162 V during specified surge events - a key parameter for validating protection margins in 24 V or 48 V systems using the SA100CA.
Is SA100CA unidirectional or bidirectional, and how can I identify its polarity?
The SA100CA is a bidirectional transient voltage suppressor, indicated by the "CA" suffix. Unlike unidirectional variants (e.g., SA100A), it has no cathode band and conducts identically in both directions - making it ideal for AC-coupled or differential signal lines. Its DO-15 package contains no polarity markings, and either lead may be connected to line or ground without functional impact.
What is the maximum operating junction temperature for SA100CA?
The SA100CA is rated for an operating junction temperature (TJ) of +175 °C, allowing deployment in high-temperature environments such as engine compartments, industrial motor drives, or enclosed power supplies. This rating is supported by its glass-passivated junction and thermal design - ensuring stable clamping performance and long-term reliability even under sustained ambient temperatures up to 125 °C when mounted with proper lead length (0.375") per datasheet derating curves.
Does SA100CA meet IEC 61000-4-5 surge immunity standards?
Yes, the SA100CA's 500 W peak pulse power rating and 162 V clamping voltage enable compliance with IEC 61000-4-5 Level 3 (2 kV) and Level 4 (4 kV) surge testing when implemented with appropriate PCB layout (short traces, low-inductance grounding). Its 5.0 ns response time and low incremental resistance ensure effective energy diversion before protected ICs are stressed - a capability confirmed in Fairchild's application notes for industrial port protection using the SAxxxCA family including the SA100CA.
What is the reverse leakage current of SA100CA at its rated stand-off voltage?
At its reverse stand-off voltage (VRWM) of 100 V and TA = 25 °C, the SA100CA exhibits a maximum reverse leakage current (IR) of 1.0 μA. This low leakage minimizes power loss in always-on circuits and prevents false triggering in high-impedance monitoring paths - a critical advantage over higher-leakage alternatives when protecting precision analog front-ends or battery-backed systems where quiescent current must remain sub-microamp, as specified in the SA100CA datasheet Rev. D.
SA100CA 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):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 3.1A
- 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
SA100CA FAQ
1.How can I place an order for SA100CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SA100CA 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 SA100CA reliable?
The price and inventory of SA100CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA100CA is usually 5 days.
3.What payment methods are accepted for SA100CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA100CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA100CA?
SA100CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA100CA 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 SA100CA?
For technical support, including SA100CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA100CA requirements.
6.How does Aetrix verify that SA100CA is sourced from the original manufacturer or authorized distributors?
All SA100CA 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 SA100CA meets industry standards.
7.What is the process for return or replacement of SA100CA?
All SA100CA units undergo pre-shipment inspection (PSI). If there is an issue with SA100CA, 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 SA100CA part is unused and in its original packaging.
Return procedure for SA100CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA100CA Tags
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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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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