My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA6.5-E3/73
- Part No.:
- SA6.5-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA6.5-E3/73.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,721
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA6.5-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for circuit-level ESD and surge protection. 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), 11.2 V clamping voltage (VC) at IPPM, and 500 W peak pulse power (10/1000 µs). It is used to protect MOSFET gates, microcontroller I/O lines, and sensor signal paths in industrial power supplies.
For engineers reviewing the SA6.5-E3/73 datasheet, SA6.5-E3/73 pinout, SA6.5-E3/73 application, or SA6.5-E3/73 equivalent, key selection criteria include unidirectional polarity, DO-15 mechanical compatibility, 11.2 V clamping under 44.7 A transient, -55 °C to +175 °C operating junction temperature, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 6.5 V, it avalanches into low-impedance conduction to divert surge energy away from downstream ICs. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<600 µA at VWM).
The device complies with 10/1000 µs waveform testing per REA standards, delivers 500 W peak pulse power at TA = 25 °C, and derates linearly above 25 °C per Fig. 2 - maintaining 3.0 W steady-state dissipation at TL = 75 °C on an infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - guaranteed avalanche onset range for reliable turn-on margin |
| VC @ IPPM | 11.2 V at 44.7 A - clamping voltage limiting stress on protected ICs during surge events |
| IPPM | 44.7 A - peak surge current handled with 10/1000 µs waveform without failure |
| PPPM | 500 W - transient power absorption capacity defining protection level against lightning/inductive spikes |
| TJ max. | +175 °C - maximum junction temperature enabling operation in high-ambient environments like engine control units |
| Leakage ID | <600 µA at VWM - minimal standby power loss and signal integrity impact in always-on circuits |
Pinout & Package
SA6.5-E3/73 uses the DO-204AC (DO-15) axial-leaded package: molded epoxy body, matte tin-plated leads solderable per J-STD-002, polarity marked by cathode band at one end. Lead diameter 0.028–0.034 in (0.71–0.86 mm), overall length ≥1.0 in (25.4 mm), body diameter 0.104–0.140 in (2.6–3.6 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transients |
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line (e.g., USB D+, CAN_H); conducts when VLINE > VWM + Vf |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures repeatable VBR tolerance and long-term stability under thermal cycling |
| 500 W peak pulse power (10/1000 µs) | Protects against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) in industrial AC inputs |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive powertrain and body electronics where reliability >15-year field life is required |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., relay coil flyback) |
| RoHS-compliant, JESD 201 Class 1A whisker tested | Enables use in lead-free reflow assembly without tin whisker risk in high-reliability systems |
Applications
| Industrial Power Supply Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: 24 V DC input stage of PLC power module exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between input rail and chassis ground to limit transient overvoltage to ≤11.2 V. Use Value: Prevents damage to upstream rectifier diodes and downstream DC-DC controller ICs during 500 W surge events. | Use Scenario: LIN bus line in door module subjected to ESD from human contact and cable coupling. IC Role / Device Role / Timing Role: Point-of-entry TVS on LIN data line referenced to vehicle ground, absorbing ±8 kV HBM ESD pulses. Use Value: Maintains signal integrity below 11.2 V clamping threshold while adding <600 µA leakage at 6.5 V nominal. |
| Microcontroller GPIO Protection | Motor Drive Gate Driver Protection |
Use Scenario: 3.3 V I/O pin of ARM Cortex-M4 MCU connected to external pushbutton with long PCB traces. IC Role / Device Role / Timing Role: Localized unidirectional TVS tied between GPIO and ground, with cathode to pin, anode to GND. Use Value: Clamps ESD-induced voltage spikes within 1 ns response time, preserving MCU latch-up immunity. | Use Scenario: High-side gate drive signal path (e.g., N-channel MOSFET driver) in BLDC inverter. IC Role / Device Role / Timing Role: TVS placed across gate-source terminals to suppress Miller-induced voltage spikes during switching transitions. Use Value: Limits VGS stress to 11.2 V, preventing gate oxide breakdown while supporting 44.7 A surge current capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5A | Same VWM (6.5 V), identical DO-214AC package, but 400 W PPPM and higher VC (11.5 V) | Surface-mount layout; unsuitable for through-hole designs requiring axial leads | Select SMAJ6.5A only if board space constraints mandate SMD placement and 400 W rating suffices. |
| 1.5KE6.8A | Higher VWM (6.8 V), larger DO-201AD package, same 500 W rating but slower response due to higher junction capacitance | Legacy through-hole design with looser footprint tolerances; not AEC-Q101 qualified | Choose 1.5KE6.8A only for cost-sensitive non-automotive applications where VWM margin allows 6.8 V standoff. |
Compared with SMAJ6.5A and 1.5KE6.8A, SA6.5-E3/73 provides tighter VBR tolerance (7.22–7.98 V vs. ±5 %), AEC-Q101 qualification for automotive use, and DO-15 axial form factor enabling manual prototyping and high-vibration mounting - making it optimal for ruggedized industrial and automotive subsystems.
Availability
SA6.5-E3/73 is available at Aetrix Electronics and suitable for industrial power supply input protection, automotive sensor interface protection, and microcontroller I/O hardening requiring stable component supply across extended production lifecycles.
Supply support for SA6.5-E3/73 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, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SAxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, low-clamping overvoltage protection in harsh electromagnetic environments - including automotive, industrial automation, and telecom infrastructure.
FAQ
What is the clamping voltage of SA6.5-E3/73 and how does it protect downstream components?
The SA6.5-E3/73 has a maximum clamping voltage (VC) of 11.2 V at 44.7 A peak pulse current (10/1000 µs waveform). This means that during a transient event, the device limits the voltage seen by protected components - such as microcontrollers or MOSFET gates - to no more than 11.2 V, well below typical absolute maximum ratings (e.g., 20 V for many 3.3 V/5 V ICs). The SA6.5-E3/73 achieves this via rapid avalanche breakdown, diverting surge current to ground before damaging overvoltage can propagate.
Is SA6.5-E3/73 suitable for automotive applications?
Yes - the SA6.5-E3/73 is RoHS-compliant and qualified to AEC-Q101 for stress testing including temperature cycling, humidity bias, and high-temperature operating life. Its -55 °C to +175 °C operating junction temperature range and glass-passivated junction make it appropriate for under-hood and body-control module applications. The "E3" suffix confirms commercial-grade RoHS compliance; for full automotive qualification, the HE3 variant (e.g., SA6.5AHE3/73) is recommended.
How does the SA6.5-E3/73 differ from bi-directional TVS diodes like SA6.5CA?
The SA6.5-E3/73 is unidirectional and functions only in reverse-bias clamping mode - ideal for DC power rails or signal lines with defined polarity. In contrast, SA6.5CA is bi-directional and clamps symmetrically in both polarities, suited for AC lines or differential buses like RS-485. The SA6.5-E3/73 offers lower leakage (<600 µA) and tighter VBR tolerance than its CA counterpart, but cannot protect AC-coupled signals without additional circuitry.
What is the meaning of the "/73" suffix in SA6.5-E3/73?
The "/73" in SA6.5-E3/73 denotes the preferred packaging code per Vishay's ordering nomenclature: it specifies 750 pieces per 7" diameter paper tape and reel (as opposed to /54 for 4000-piece 13" reels). This affects logistics and automated assembly compatibility - SA6.5-E3/73 is optimized for medium-volume SMT placement with standard feeder setups, while maintaining the same electrical and thermal specs as other SA6.5A variants.
Can SA6.5-E3/73 be used in parallel for higher surge current handling?
No - paralleling SA6.5-E3/73 devices is not recommended due to mismatch in VBR (7.22–7.98 V) causing uneven current sharing and potential thermal runaway. For higher IPPM, select a single higher-rated device (e.g., SA10A for 29.4 A) or use a TVS array with matched channels. The SA6.5-E3/73 is characterized for standalone operation; its 44.7 A rating assumes proper PCB layout with short, low-inductance ground paths to sustain performance.
SA6.5-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA6.5-E3/73 FAQ
1.How can I place an order for SA6.5-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA6.5-E3/73 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 SA6.5-E3/73 reliable?
The price and inventory of SA6.5-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA6.5-E3/73 is usually 5 days.
3.What payment methods are accepted for SA6.5-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA6.5-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA6.5-E3/73?
SA6.5-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA6.5-E3/73 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 SA6.5-E3/73?
For technical support, including SA6.5-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA6.5-E3/73 requirements.
6.How does Aetrix verify that SA6.5-E3/73 is sourced from the original manufacturer or authorized distributors?
All SA6.5-E3/73 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 SA6.5-E3/73 meets industry standards.
7.What is the process for return or replacement of SA6.5-E3/73?
All SA6.5-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA6.5-E3/73, 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 SA6.5-E3/73 part is unused and in its original packaging.
Return procedure for SA6.5-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA6.5-E3/73 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
