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Vishay General Semiconductor - Diodes Division SA54CHE3/73
- Part No.:
- SA54CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA54CHE3/73.pdf
- Description:
- TVS DIODE 54VWM 96.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,042
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Product details
Overview
SA54CHE3/73 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 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 μs), 5.7 A peak pulse current (IPPM), and 87.1 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SA54CHE3/73 datasheet, SA54CHE3/73 pinout, SA54CHE3/73 application, or SA54CHE3/73 equivalent, this AEC-Q101 qualified TVS offers verified bi-directional surge suppression with low clamping ratio, RoHS-compliant matte tin leads, and UL 94 V-0 molded epoxy packaging - critical for ESD and load-switching transient protection in harsh-environment electronics.
Technical Context
This device operates as a bi-directional avalanche diode, symmetrically clamping both positive and negative transients above its breakdown threshold without polarity marking. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
Rated for -55 °C to +175 °C junction temperature, it supports repetitive 10/1000 μs pulses at 0.01 % duty cycle and withstands solder dip up to 275 °C for 10 s. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - essential for automotive under-hood and ADAS sensor line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Tight breakdown window ensures predictable turn-on and minimal overvoltage exposure during transients. |
| VC @ IPPM | 87.1 V at 5.7 A - Clamping voltage limits downstream component stress; clamping ratio (VC/VBR) ≈ 1.35 indicates high efficiency. |
| PPPM | 500 W - Peak surge power handling capability with 10/1000 μs waveform; sufficient for ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 Level 3. |
| IPPM | 5.7 A - Peak current supported at rated clamping voltage; determines minimum trace width and PCB layout margin for surge path. |
| TJ max | +175 °C - High junction temperature rating enables use in engine control units and power converters without derating. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with 0.300" (7.6 mm) minimum lead length; compatible with automated through-hole assembly. |
Pinout & Package
SA54CHE3/73 is a two-terminal bi-directional TVS diode in DO-204AC (DO-15) package. No polarity marking is present; either lead may serve as anode or cathode depending on transient polarity. Leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional avalanche junction terminal | Both terminals function identically; connects across protected line and ground (or rail-to-rail) to clamp ± transients symmetrically. |
| Case | Molded epoxy body (UL 94 V-0) | Provides electrical isolation, mechanical robustness, and flame resistance; no thermal pad or heatsink requirement for 500 W pulse. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and chassis modules; meets stress test requirements for temperature cycling, HTRB, and ESD. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift - critical for long-term reliability in industrial environments. |
| 500 W peak pulse power (10/1000 μs) | Supports high-energy transients from inductive switching (e.g., solenoid drivers) without degradation; exceeds IEC 61000-4-5 4 kV surge test requirements. |
| Low clamping voltage (87.1 V) | Minimizes overvoltage stress on downstream 60 V-rated MOSFETs or CAN transceivers; reduces need for additional series impedance or filtering. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and EU RoHS Directive 2011/65/EU - suitable for consumer, medical, and automotive production without exemptions. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor inputs (e.g., pressure, temperature) in engine control units from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between sensor signal line and chassis ground to limit excursion beyond ±90 V. Use Value: Prevents latch-up or permanent damage to 12-bit ADC front-ends and op-amps while maintaining signal integrity below 54 V nominal operation. |
Use Scenario: Shielding 24 V DC digital input modules in programmable logic controllers from relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Line-to-ground TVS on each isolated input channel, absorbing >500 W surges without affecting 1 ms response time. Use Value: Eliminates false triggering and extends mean time between failures (MTBF) in factory automation systems operating 24/7 in electrically noisy environments. |
| Telecom Power Rail Protection | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding PoE-powered Ethernet switch ports against lightning-induced common-mode surges on 48 V DC supply rails. IC Role / Device Role / Timing Role: Bi-directional TVS connected rail-to-ground on secondary-side DC-DC output to suppress differential and common-mode transients. Use Value: Maintains IEEE 802.3af/at compliance by limiting rail overshoot to <90 V during 10/1000 μs surges, preventing DC-DC controller shutdown. |
Use Scenario: Clamping gate-source voltage spikes on N-channel MOSFETs in half-bridge motor drivers caused by Miller coupling and parasitic inductance. IC Role / Device Role / Timing Role: Low-capacitance TVS across gate and source terminals to clamp sub-100 ns spikes without slowing switching edge. Use Value: Avoids unintended turn-on and shoot-through failure in 20 kHz PWM inverters - especially critical when using SiC or GaN FETs with tight VGS thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/57T | Uni-directional; same VWM (54 V), but requires polarity-aware placement; slightly lower VC (88.0 V) and higher IPPM (6.5 A). | Not suitable for AC-coupled or floating signal lines where bidirectional clamping is mandatory. | Select only if circuit topology guarantees unidirectional transient polarity and board space favors SMA package. |
| 1.5KE54CA | Same bi-directional function and VWM, but larger DO-201AD package; higher PPPM (1500 W), higher VC (93.6 V), and slower response due to higher junction capacitance. | Better for high-energy surges but less suitable for high-speed data lines or compact layouts. | Prefer when surge energy exceeds 500 W or when legacy DO-201AD footprint is fixed; avoid for space-constrained or high-frequency designs. |
Compared with SMAJ54A-E3/57T and 1.5KE54CA, SA54CHE3/73 delivers AEC-Q101 qualification, DO-15 footprint compatibility, and optimized clamping ratio for automotive-grade signal-line protection - making it the preferred choice where reliability, size, and bidirectional symmetry are jointly required.
Availability
SA54CHE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power rails, and motor drive gate protection requiring stable component supply and long-term lifecycle support.
Supply support for SA54CHE3/73 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, TVS devices, and optoelectronics with emphasis on reliability, AEC-Q qualification, and high-volume manufacturability.
The SAxxA/SAxxCA TransZORB® family is engineered for robust transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping performance across temperature and lifetime under real-world surge conditions.
FAQ
What is the breakdown voltage range of the SA54CHE3/73?
The SA54CHE3/73 has a specified breakdown voltage (VBR) range of 60.0 V to 66.3 V at 1 mA test current, per Vishay document 88378. This tight ±5.5 % tolerance ensures predictable clamping onset and minimizes variation in protected circuit overvoltage exposure. The value is measured under standard conditions (TA = 25 °C) and applies equally in both directions due to its bi-directional construction.
Is the SA54CHE3/73 suitable for automotive applications?
Yes, the SA54CHE3/73 is AEC-Q101 qualified (HE3 suffix), confirming validation for automotive use including temperature cycling, high-temperature reverse bias, and ESD testing. Its -55 °C to +175 °C operating range, glass-passivated junction, and UL 94 V-0 molding compound make it appropriate for engine control units, ADAS sensors, and body electronics where reliability under thermal and electrical stress is mandatory.
How does the clamping voltage of SA54CHE3/73 compare to its stand-off voltage?
The SA54CHE3/73 has a 54 V stand-off voltage (VWM) and clamps at 87.1 V (VC) under 5.7 A peak pulse current. This yields a clamping ratio of ~1.61, indicating moderate overvoltage margin - typical for 500 W DO-15 TVS devices. The ratio reflects trade-offs between surge capacity and protection level, and remains stable across its rated temperature range.
What package type does SA54CHE3/73 use, and is it RoHS compliant?
The SA54CHE3/73 uses the DO-204AC (DO-15) axial-leaded package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The HE3 suffix confirms RoHS compliance per EU Directive 2011/65/EU and JESD 201 Class 2 whisker resistance - verified by Vishay's material categorization documentation.
Can SA54CHE3/73 be used in bi-directional signal lines such as RS-485 or CAN?
Yes, SA54CHE3/73 is explicitly designed for bi-directional applications, with identical electrical characteristics in both polarities and no polarity marking. It is commonly deployed on RS-485 bus lines and CAN FD physical layers to suppress ESD and fast transients while preserving signal integrity - provided layout minimizes parasitic inductance in the TVS return path.
SA54CHE3/73 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 96.3V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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)
SA54CHE3/73 FAQ
1.How can I place an order for SA54CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA54CHE3/73 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 SA54CHE3/73 reliable?
The price and inventory of SA54CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA54CHE3/73 is usually 5 days.
3.What payment methods are accepted for SA54CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA54CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA54CHE3/73?
SA54CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA54CHE3/73 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 SA54CHE3/73?
For technical support, including SA54CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA54CHE3/73 requirements.
6.How does Aetrix verify that SA54CHE3/73 is sourced from the original manufacturer or authorized distributors?
All SA54CHE3/73 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 SA54CHE3/73 meets industry standards.
7.What is the process for return or replacement of SA54CHE3/73?
All SA54CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA54CHE3/73, 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 SA54CHE3/73 part is unused and in its original packaging.
Return procedure for SA54CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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