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Vishay General Semiconductor - Diodes Division SA11CAHE3/54
- Part No.:
- SA11CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA11CAHE3/54.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,409
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Product details
Overview
SA11CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 500 W peak pulse power (10/1000 μs), 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR at 1 mA), and clamps to ≤18.2 V at 27.5 A peak pulse current - deployed in automotive sensor interface protection per AEC-Q101 qualification.
For engineers reviewing the SA11CAHE3/54 datasheet, SA11CAHE3/54 pinout, SA11CAHE3/54 application, or SA11CAHE3/54 equivalent, this page delivers verified electrical specs, DO-15 terminal mapping, real-world clamping behavior, and qualified alternatives for ESD/surge protection in automotive and industrial control systems.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC characteristics in forward and reverse directions. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for protecting sensitive analog inputs and CAN/LIN bus nodes against ISO 7637-2 pulses.
The device complies with AEC-Q101 stress testing (including temperature cycling, HTRB, and surge), uses matte tin-plated leads per J-STD-002, and meets UL 94 V-0 flammability. Its 175 °C max junction temperature supports under-hood deployment without derating in ambient up to 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse voltage before conduction; defines safe operating margin below system rail (e.g., 12 V automotive battery). |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above VWM with ±5.5% tolerance. |
| VC @ IPPM | ≤18.2 V at 27.5 A - Clamped voltage during 10/1000 μs surge; limits stress on downstream ICs like microcontrollers or transceivers. |
| PPPM | 500 W - Peak pulse power handling capability; sustains transient energy from inductive load switching or ESD events. |
| IPPM | 27.5 A - Peak pulse current capacity at rated waveform; determines survivability against 500 W surges. |
| TJ max | 175 °C - Maximum junction temperature; enables operation in high-temperature environments such as engine control units. |
| Leakage (ID) | ≤1.0 μA at 11 V - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in always-on circuits. |
Pinout & Package
SA11CAHE3/54 is housed in a DO-15 (DO-204AC) axial-leaded package with matte tin-plated leads. No polarity marking is present, consistent with bidirectional functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional clamping node | Either lead serves as input/output; no cathode band - enables placement flexibility in PCB layout without orientation constraints. |
| Lead 1 | Current path terminal | Connected directly to PCB trace or connector; solderable per JESD 22-B102; withstands 275 °C dip for 10 s. |
| Lead 2 | Current path terminal | Electrically identical to Lead 1; forms low-inductance path for surge current diversion to ground or rail. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and surge endurance - required for engine control, body electronics, and ADAS modules. |
| Glass passivated junction | Enables <1 ns response time and stable VBR over lifetime - critical for suppressing fast-rising ESD (IEC 61000-4-2) and lightning-induced transients. |
| 500 W peak pulse rating | Handles repetitive 10/1000 μs surges at 0.01% duty cycle - sufficient for protection against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump initiation). |
| UL 94 V-0 molding compound | Self-extinguishing epoxy prevents flame propagation in enclosed enclosures - mandated for under-hood and cabin-mounted ECUs. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance - eliminates tin whisker risk in long-life automotive applications (>15 years). |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V digital input channels from load dump and relay coil flyback in BCMs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between input terminal and ground, absorbing >500 W transients before they reach MCU GPIO or level-shifter ICs. Use Value: Limits voltage seen by protected ICs to ≤18.2 V during 27.5 A surges - preventing latch-up and permanent damage per ISO 16750-2 requirements. |
Use Scenario: Safeguarding 24 V DC digital inputs on programmable logic controllers exposed to field wiring transients. IC Role / Device Role / Timing Role: Front-end transient suppressor on each input channel, shunting surge energy away from optocoupler input stages and isolation barriers. Use Value: Maintains ≤1.0 μA leakage at 24 V nominal - avoids false triggering while delivering 500 W clamping headroom for IEC 61000-4-4 burst immunity. |
| Automotive Sensor Interface (e.g., ABS Wheel Speed) | Telecom Power Supply Input Stage |
Use Scenario: Shielding differential Hall-effect sensor outputs from ESD and alternator ripple coupling in anti-lock braking systems. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to chassis ground, suppressing common-mode transients without distorting low-amplitude AC signals. Use Value: Symmetric 12.2–13.5 V VBR ensures matched turn-on across both signal lines - preserving signal integrity and minimizing offset error in analog front-ends. |
Use Scenario: Input-stage surge suppression on 48 V telecom rectifier modules subjected to lightning-induced surges on AC mains feeders. IC Role / Device Role / Timing Role: Primary clamping device upstream of bridge rectifier and bulk capacitor, diverting energy before it stresses downstream components. Use Value: Withstands 275 °C solder dip per JESD 22-B106 - compatible with high-temperature reflow profiles used in telecom power 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 |
|---|---|---|---|
| SMBJ11CA | DO-214AA package; 600 W PPPM; VC = 17.0 V @ 32.5 A; same VWM/VBR range | Surface-mount footprint; higher surge rating but larger board area than axial DO-15 | Select when automated SMT assembly is required and higher pulse power margin is needed. |
| 1.5KE11CA | DO-201AD package; 1500 W PPPM; VC = 18.2 V @ 82.5 A; VBR = 12.2–13.5 V | Higher-power through-hole alternative; longer lead length increases inductance vs. DO-15 | Choose for legacy designs requiring higher surge robustness where DO-15 mechanical fit is not constrained. |
Compared with SMBJ11CA and 1.5KE11CA, SA11CAHE3/54 offers AEC-Q101 qualification and JESD 201 Class 2 whisker resistance in a compact DO-15 form factor - making it optimal for new automotive designs prioritizing reliability, qualification compliance, and space-constrained layouts.
Availability
SA11CAHE3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SA11CAHE3/54 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SAxxCA series is engineered specifically for bidirectional transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SA11CAHE3/54 under a 10/1000 μs surge?
The SA11CAHE3/54 clamps to a maximum of 18.2 V at its rated peak pulse current of 27.5 A under a 10/1000 μs waveform. This value is measured per Figure 7 in the official Vishay datasheet (Document Number: 88378), confirming its ability to limit transient overvoltage stress on protected circuitry without exceeding safe thresholds for 12 V system ICs.
Is SA11CAHE3/54 suitable for automotive applications?
Yes, SA11CAHE3/54 is AEC-Q101 qualified and carries the HE3 suffix indicating JESD 201 Class 2 whisker resistance - both essential for automotive use. Its 175 °C max junction temperature, UL 94 V-0 molding, and validated performance across temperature cycling and surge tests make SA11CAHE3/54 appropriate for body control modules, sensor interfaces, and infotainment power rails.
How does the bidirectional design of SA11CAHE3/54 affect its circuit implementation?
The bidirectional nature of SA11CAHE3/54 means it conducts identically in both polarities, with no cathode marking and symmetrical VBR, VC, and IPPM values. This allows placement between any two nodes - such as signal-to-ground or differential line pairs - without orientation concerns, simplifying layout and enabling common-mode transient suppression in analog sensor paths.
What is the reverse leakage current specification for SA11CAHE3/54 at its stand-off voltage?
At its 11 V stand-off voltage (VWM), SA11CAHE3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage ensures minimal loading on high-impedance sensor outputs or battery-backed circuits, preserving accuracy and extending operational life in always-on automotive subsystems.
Does SA11CAHE3/54 have a defined polarity marking on the package?
No, SA11CAHE3/54 has no polarity marking on its DO-15 package because it is a bidirectional TVS diode. Unlike unidirectional types (e.g., SA11A), which feature a cathode band, SA11CAHE3/54 is functionally symmetric - either lead may connect to the protected line or reference node, eliminating orientation-dependent assembly errors.
SA11CAHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 27.5A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA11CAHE3/54 FAQ
1.How can I place an order for SA11CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA11CAHE3/54 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 SA11CAHE3/54 reliable?
The price and inventory of SA11CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA11CAHE3/54 is usually 5 days.
3.What payment methods are accepted for SA11CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA11CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA11CAHE3/54?
SA11CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA11CAHE3/54 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 SA11CAHE3/54?
For technical support, including SA11CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA11CAHE3/54 requirements.
6.How does Aetrix verify that SA11CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA11CAHE3/54 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 SA11CAHE3/54 meets industry standards.
7.What is the process for return or replacement of SA11CAHE3/54?
All SA11CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA11CAHE3/54, 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 SA11CAHE3/54 part is unused and in its original packaging.
Return procedure for SA11CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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