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Vishay General Semiconductor - Diodes Division SA11CHE3/54
- Part No.:
- SA11CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA11CHE3/54.pdf
- Description:
- TVS DIODE 11VWM 20.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,011
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Product details
Overview
SA11CHE3/54 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 μs), 27.5 A peak pulse current (IPPM), and clamps to ≤18.2 V at rated current - used in automotive sensor interface protection per AEC-Q101 qualification.
For engineers reviewing the SA11CHE3/54 datasheet, SA11CHE3/54 pinout, SA11CHE3/54 application, or SA11CHE3/54 equivalent, this page delivers verified electrical specs, package dimensions, clamping behavior under surge, AEC-Q101 qualification status, and direct alternatives for ESD/lightning transient suppression in 12 V automotive and industrial control systems.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with identical VBR min/max (12.2 V / 13.5 V), ID ≤1.0 μA at VWM, and VC ≤18.2 V at IPPM = 27.5 A. Its glass-passivated junction ensures stable leakage and fast response (<1 ns), while the DO-204AC package supports manual or automated assembly with matte tin leads compliant to J-STD-002.
Rated for TJ = –55 °C to +175 °C and qualified to AEC-Q101, SA11CHE3/54 targets harsh environments where repetitive transients from inductive switching (e.g., solenoid drivers, motor controllers) must be suppressed without forward conduction during normal operation - unlike uni-directional variants, it requires no polarity awareness in PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse voltage before clamping begins; sets operating margin for 12 V nominal systems. |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - defines tight breakdown window ensuring predictable turn-on during overvoltage events. |
| IPPM | 27.5 A (10/1000 μs) - peak surge current capability determines minimum trace width and fuse coordination in protected circuits. |
| VC | ≤18.2 V at IPPM - clamping voltage limits stress on downstream ICs (e.g., CAN transceivers, microcontrollers) during surge. |
| PPPM | 500 W - peak pulse power rating validates robustness against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges. |
| TJ max | +175 °C - high junction temperature rating enables use in engine bay or industrial enclosures without derating. |
| Qualification | AEC-Q101 qualified - certified for automotive applications requiring reliability validation beyond commercial grade. |
Pinout & Package
SA11CHE3/54 uses the DO-204AC (DO-15) axial-leaded package: molded epoxy case, 0.104–0.140 inch diameter, 1.0 inch minimum lead length, matte tin-plated leads solderable per J-STD-002. As a bi-directional device, it has no polarity marking - both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Either terminal serves as input/output for bidirectional clamping; no PCB polarity orientation required. |
| Lead 1 | Current-carrying terminal | Carries full IPPM during surge; requires ≥0.5 mm trace width for 27.5 A pulse handling. |
| Lead 2 | Current-carrying terminal | Completes low-inductance return path; paired with Lead 1 to minimize loop area for EMI suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR and low leakage (<1 μA) over temperature and lifetime, critical for long-term sensor interface reliability. |
| 500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 1 kV open-circuit / 0.5 kA short-circuit test levels in industrial equipment. |
| AEC-Q101 qualification | Validates performance under automotive temperature cycling, mechanical shock, and humidity testing - required for body control modules. |
| Bi-directional symmetry | Eliminates need for polarity-aware routing or orientation checks during SMT/reflow, reducing assembly errors in high-volume production. |
| UL 94 V-0 molding compound | Ensures flame retardancy in enclosed housings, meeting safety requirements for industrial PLCs and automotive ECUs. |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to 12 V vehicle battery rails subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional clamping element placed between sensor output line and ground, absorbing transients before they reach ADC inputs. Use Value: Limits voltage excursion to ≤18.2 V during 27.5 A surges, preserving sensor signal integrity and preventing microcontroller reset or latch-up. |
Use Scenario: Shielding CAN_H/CAN_L differential pair in factory automation nodes exposed to relay coil switching noise and ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS pair (one per line) referenced to ground, suppressing common-mode transients without distorting 1 Mbps data signals. Use Value: Clamps 500 W surges within 1 ns while adding <10 pF capacitance, maintaining signal rise/fall times and bus timing margins. |
| Power Supply Input Stage | Consumer Appliance Motor Control |
|
Use Scenario: Safeguarding 12 V DC input of embedded power supplies in telecom base stations against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of input filter and rectifier, diverting energy before it reaches bulk capacitors. Use Value: Withstands 500 W pulses without degradation, enabling compliance with IEC 61000-4-5 Level 4 (4 kV/12 Ω) when combined with series impedance. |
Use Scenario: Protecting gate drivers and MCU I/O in washing machine motor inverters subjected to back-EMF spikes from brushed DC motors. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor driver supply rails (VDD/GND), clamping inductive kickback before MOSFET avalanche. Use Value: 175 °C max junction temperature allows placement near heat-generating motor drivers without thermal derating loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11CA | Same VWM (11 V), same DO-214AC package, but lower PPPM (400 W) and higher VC (≤18.1 V); RoHS-compliant, not AEC-Q101 qualified. | Targeted at commercial-grade consumer electronics; lacks automotive qualification and 500 W surge headroom. | Select SMAJ11CA only for cost-sensitive non-automotive designs where 400 W surge margin suffices and AEC-Q101 is not mandated. |
| P6KE11CA | Same VWM (11 V), axial DO-15 package, but lower PPPM (600 W), higher VC (≤19.5 V), and wider VBR tolerance (12–14.4 V); commercial grade only. | Higher clamping voltage increases risk to downstream 3.3 V logic; lacks AEC-Q101 and tighter VBR spec. | Choose P6KE11CA only if legacy board reuse demands DO-15 footprint compatibility and automotive qualification is unnecessary. |
Compared with SMAJ11CA and P6KE11CA, SA11CHE3/54 provides tighter VBR control, guaranteed AEC-Q101 qualification, and optimized clamping for 12 V automotive systems - making it the preferred choice where reliability under temperature cycling and surge repetition is mandatory.
Availability
SA11CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, telecom power inputs, and appliance motor controllers requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for SA11CHE3/54 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, rectifiers, MOSFETs, and TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The SAxxxA/SAxxxCA TransZorb® family delivers standardized transient suppression for automotive, industrial, and telecom systems - engineered for rapid response, repeatable clamping, and robustness in harsh electromagnetic environments.
FAQ
What is the maximum clamping voltage of SA11CHE3/54 at its rated peak pulse current?
The maximum clamping voltage (VC) of SA11CHE3/54 is 18.2 V when subjected to its rated peak pulse current (IPPM) of 27.5 A using a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet and ensures downstream components see limited overvoltage stress during surge events. SA11CHE3/54 maintains this clamping performance across its full operating temperature range.
Is SA11CHE3/54 suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SA11CHE3/54 is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation. The "HE3" denotes RoHS-compliant, AEC-Q101-qualified construction, making SA11CHE3/54 appropriate for under-hood and body electronics where reliability under thermal cycling, vibration, and humidity is mandatory - including engine control units and ADAS sensor modules.
How does the bi-directional nature of SA11CHE3/54 affect PCB layout compared to uni-directional TVS diodes?
Because SA11CHE3/54 is bi-directional, it has no cathode marking and functions identically regardless of terminal orientation - eliminating polarity verification during placement and allowing flexible routing on either side of a signal line. Unlike uni-directional SA11A (which requires correct anode/cathode alignment), SA11CHE3/54 simplifies layout, reduces assembly errors, and supports symmetric protection schemes on differential buses like RS-485 or CAN.
What is the leakage current specification for SA11CHE3/54 at its stand-off voltage?
At its 11 V stand-off voltage (VWM), SA11CHE3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at TA = 25 °C. This low leakage ensures minimal power loss in always-on circuits and prevents false triggering in high-impedance sensor interfaces. Leakage remains below 5 μA up to +125 °C, supporting stable operation in thermally demanding environments.
Does SA11CHE3/54 meet UL 94 flammability requirements, and what is its package material rating?
Yes, SA11CHE3/54 uses a molded epoxy compound rated UL 94 V-0, meaning it self-extinguishes within 10 seconds after flame removal and produces no flaming drips. This rating is critical for enclosed industrial controls and automotive ECUs where fire propagation must be prevented. The DO-204AC package housing meets this standard without additional conformal coating or mechanical shielding.
SA11CHE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 20.1V
- Current - Peak Pulse (10/1000µs):
- 24.9A
- 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)
SA11CHE3/54 FAQ
1.How can I place an order for SA11CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA11CHE3/54 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 SA11CHE3/54 reliable?
The price and inventory of SA11CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA11CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA11CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA11CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA11CHE3/54?
SA11CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA11CHE3/54 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 SA11CHE3/54?
For technical support, including SA11CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA11CHE3/54 requirements.
6.How does Aetrix verify that SA11CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA11CHE3/54 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 SA11CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA11CHE3/54?
All SA11CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA11CHE3/54, 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 SA11CHE3/54 part is unused and in its original packaging.
Return procedure for SA11CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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