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Vishay General Semiconductor - Diodes Division SA6.5CHE3/54
- Part No.:
- SA6.5CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA6.5CHE3/54.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,907
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Product details
Overview
SA6.5CHE3/54 from Vishay 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 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 44.7 A peak pulse current (IPPM), and clamps to ≤11.2 V at rated surge, with AEC-Q101 qualification for automotive use.
For engineers reviewing the SA6.5CHE3/54 datasheet, SA6.5CHE3/54 pinout, SA6.5CHE3/54 application, or SA6.5CHE3/54 equivalent, this device is selected for robust ESD and surge protection in low-voltage sensor interfaces, CAN bus stubs, and 5 V/6 V power rail conditioning where bi-directional clamping and high reliability under repetitive transients are required.
Technical Context
The SA6.5CHE3/54 operates as a bi-directional avalanche diode, symmetrically clamping both positive and negative transients above its VWM of 6.5 V. Its glass-passivated junction enables fast response (<1 ns) and stable breakdown characteristics across temperature, with a ±5 % VBR tolerance and +0.05 %/°C temperature coefficient.
It delivers 500 W peak pulse power (10/1000 μs waveform), dissipates 3.0 W continuously on an infinite heatsink, and supports operation from –55 °C to +175 °C. The device is RoHS-compliant, matte tin-plated, and qualified to AEC-Q101 - confirming suitability for automotive electronics under harsh thermal and mechanical stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping begins; sets protection threshold for 5 V–6 V systems. |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - Confirmed avalanche onset range; ensures reliable triggering without premature conduction. |
| IPPM | 44.7 A (10/1000 μs) - Peak surge current handling capacity; determines survivability against IEC 61000-4-5 Level 3/4 surges. |
| VC | ≤11.2 V at IPPM - Clamped voltage during full-rated surge; guarantees downstream ICs (e.g., MCU I/O, transceivers) remain below absolute max ratings. |
| PPPM | 500 W - Peak pulse power rating; defines transient energy absorption capability per pulse under standardized waveform. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive environments and high-power industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case meeting UL 94 V-0. Bi-directional construction means no polarity marking; terminals are non-polarized and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (either lead) | Bi-directional avalanche junction terminal | Either lead serves as input/output for transient suppression; no cathode band or polarity identification required. |
| Leads (matte tin plated) | Solderable interface | Complies with J-STD-002 and JESD 22-B102; withstands 275 °C solder dip for 10 s per JESD 22-B106. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR and low leakage (<1 μA at VWM) over lifetime and temperature extremes. |
| 500 W peak pulse power (10/1000 μs) | Supports repeated lightning-induced surges per IEC 61000-4-5 without degradation when derated per fig. 2. |
| AEC-Q101 qualification | Validates reliability for automotive control units, body electronics, and ADAS sensor modules requiring zero-failure field performance. |
| Low incremental clamping resistance | Enables tight VC – VBR margin (≤3.98 V), minimizing voltage overshoot during fast-rising transients. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - critical for long-life automotive solder joints. |
Applications
| Automotive Sensor Interface | CAN Bus Stub Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, or position sensors connected to 5 V microcontroller ADC inputs in engine control modules. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed between sensor output line and ground, absorbing load-dump spikes and ESD events. Use Value: Maintains signal integrity by limiting transient excursions to ≤11.2 V, preventing ADC saturation and latch-up in downstream MCUs. | Use Scenario: Shielding CAN_H and CAN_L stub traces from ESD and inductive switching noise in vehicle infotainment gateways. IC Role / Device Role / Timing Role: Paired SA6.5CHE3/54 devices (one per line) provide symmetrical clamping referenced to common-mode ground. Use Value: Preserves CAN differential signaling integrity by suppressing common-mode transients up to ±11.2 V without affecting DC bias or data eye. |
| Industrial 6 V Power Rail | USB 2.0 VBUS Line Protection |
Use Scenario: Safeguarding 6 V auxiliary rails feeding isolated RS-485 transceivers or optocoupler drivers in factory automation PLCs. IC Role / Device Role / Timing Role: Placed between rail and ground to shunt surge energy from relay coil flyback or motor drive coupling. Use Value: Limits rail collapse and overshoot to <11.2 V, avoiding brownout resets and ensuring uninterrupted communication link uptime. | Use Scenario: Protecting USB host port VBUS (5 V nominal) against hot-plug ESD and cable discharge events in embedded medical devices. IC Role / Device Role / Timing Role: Single SA6.5CHE3/54 between VBUS and GND, leveraging bi-directional symmetry for ±8 kV contact ESD per IEC 61000-4-2. Use Value: Clamps ESD pulses within 1 ns while maintaining <1 μA leakage at 5 V, preventing false disconnect detection and port lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6.5CAHE3/A | Same VWM (6.5 V), identical DO-204AC package, but SMA (DO-214AC) footprint differs - not pin-compatible. | Designed for surface-mount PCBs; requires layout change and requalification of thermal relief and trace inductance. | Select if transitioning to SMT assembly; verify clamping performance with board parasitics. |
| 1.5KE6.8CA | Higher PPPM (1500 W), larger DO-201AD package, VWM = 6.8 V, VC = 11.5 V - looser clamping margin. | Better for high-energy surges (e.g., AC mains coupling), but less precise for low-voltage logic protection due to higher VC. | Choose only when system-level surge tests exceed 500 W requirements; avoid for space-constrained or precision-clamp designs. |
Compared with SMA6.5CAHE3/A and 1.5KE6.8CA, the SA6.5CHE3/54 offers optimal balance of compact axial packaging, tight 6.5 V standoff, and AEC-Q101 validation - making it preferred for automotive and industrial through-hole designs where reliability and footprint compatibility are prioritized over SMT conversion or ultra-high surge headroom.
Availability
SA6.5CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus conditioning, and 6 V industrial power rail stabilization requiring stable component supply across extended production lifecycles.
Supply support for SA6.5CHE3/54 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 validation.
The SAxxxC series is part of Vishay's TRANSZORB® TVS family, engineered specifically for bi-directional transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the SA6.5CHE3/54 under maximum rated surge?
The SA6.5CHE3/54 clamps to a maximum of 11.2 V when subjected to its rated 44.7 A peak pulse current (10/1000 μs waveform). This value is measured per standard test conditions in the Vishay datasheet (Doc. #88378, page 2) and reflects worst-case VC across production lot and temperature range. Designers must ensure downstream components tolerate ≤11.2 V transient exposure.
Is the SA6.5CHE3/54 suitable for protecting USB 2.0 data lines?
No - the SA6.5CHE3/54 is not recommended for USB 2.0 data lines (D+ and D−) due to its relatively high capacitance (>100 pF at 0 V, per Fig. 6) and bi-directional clamping architecture, which would distort high-speed differential signals. It is rated for VBUS (power line) protection only. For data-line protection, use low-capacitance unidirectional TVS arrays such as the Vishay USBLC6-2SC6.
Does the HE3 suffix on SA6.5CHE3/54 indicate AEC-Q101 qualification?
Yes - the HE3 suffix explicitly denotes RoHS compliance and AEC-Q101 qualification per Vishay's ordering nomenclature (Document #88378, page 3, Note 1). This distinguishes it from the commercial-grade E3 variant and confirms qualification for automotive applications including temperature cycling, HTRB, and ESD testing per JESD47.
What is the maximum steady-state power dissipation for SA6.5CHE3/54?
The SA6.5CHE3/54 has a maximum steady-state power dissipation (PD) of 3.0 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C, as specified in the "Maximum Ratings" table (page 1). Derating is required above 75 °C per Fig. 5; at TL = 100 °C, PD drops to ~2.0 W. This rating applies only to continuous DC or low-frequency leakage, not transient events.
How does the bi-directional nature of SA6.5CHE3/54 affect PCB layout?
The bi-directional design of SA6.5CHE3/54 eliminates polarity concerns: either lead may connect to the protected line, and the other to ground, with no cathode marking required. This simplifies layout, reduces assembly errors, and allows flexible placement on 5 V or 6 V bidirectional buses (e.g., I²C, SMBus, or CAN). However, trace inductance must still be minimized to preserve sub-nanosecond response.
SA6.5CHE3/54 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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 40.7A
- 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)
SA6.5CHE3/54 FAQ
1.How can I place an order for SA6.5CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA6.5CHE3/54 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 SA6.5CHE3/54 reliable?
The price and inventory of SA6.5CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA6.5CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA6.5CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA6.5CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA6.5CHE3/54?
SA6.5CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA6.5CHE3/54 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 SA6.5CHE3/54?
For technical support, including SA6.5CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA6.5CHE3/54 requirements.
6.How does Aetrix verify that SA6.5CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA6.5CHE3/54 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 SA6.5CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA6.5CHE3/54?
All SA6.5CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA6.5CHE3/54, 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 SA6.5CHE3/54 part is unused and in its original packaging.
Return procedure for SA6.5CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA6.5CHE3/54 Tags
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