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Vishay General Semiconductor - Diodes Division SA54CHE3/54
- Part No.:
- SA54CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA54CHE3/54.pdf
- Description:
- TVS DIODE 54VWM 96.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,925
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Product details
Overview
SA54CHE3/54 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 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, sensor interfaces, and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SA54CHE3/54 datasheet, SA54CHE3/54 pinout, SA54CHE3/54 application, or SA54CHE3/54 equivalent, this part is evaluated for bi-directional surge protection in automotive-grade (AEC-Q101 qualified), industrial, and telecom systems where low-leakage (<1.0 μA at VWM) and stable temperature coefficient (±0.065 %/°C) are critical for long-term reliability under thermal cycling.
Technical Context
The SA54CHE3/54 operates as a bi-directional avalanche diode with symmetrical clamping behavior in both polarities, enabling use on AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures consistent breakdown characteristics and low incremental surge resistance, while the DO-204AC package supports manual or automated through-hole assembly with matte tin-plated leads compliant to J-STD-002.
Designed per ANSI/IEEE C62.35 standards, it delivers repeatable 10/1000 μs waveform suppression at 0.01% duty cycle, with derating above 25 °C per Fig. 2 and full operation across –55 °C to +175 °C junction temperature range - making it suitable for under-hood automotive and high-temperature industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse voltage before conduction; defines operating margin for 48 V nominal systems. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Ensures predictable turn-on within tight tolerance for reliable overvoltage thresholding. |
| IPPM | 5.7 A - Peak current handled during 10/1000 μs transient; determines minimum series impedance required for compliance. |
| VC | 87.1 V - Clamped voltage at IPPM; must remain below protected IC's absolute maximum rating. |
| PPPM | 500 W - Surge energy handling capacity; enables protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) events. |
| TJ max | +175 °C - Enables deployment in high-ambient environments like engine control units or motor drives. |
| Leakage (ID) | <1.0 μA at 54 V - Minimizes standby power loss and avoids false triggering in high-impedance sensor nodes. |
Pinout & Package
SA54CHE3/54 is housed in a DO-204AC (DO-15) molded epoxy package with axial leads. The device is bi-directional and unmarked - no cathode band or polarity indicator is present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | Either lead may serve as anode or cathode; identical clamping performance in both directions. |
| Lead 1 | Terminal for PCB mounting | Matte tin-plated, solderable per JESD 22-B102; supports wave/solder dip up to 275 °C for 10 s. |
| Lead 2 | Terminal for PCB mounting | Same metallization and mechanical specs as Lead 1; no functional distinction between terminals. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics per stress test requirements. |
| Glass passivated junction | Improves long-term stability of VBR and leakage under humidity and thermal cycling. |
| 500 W peak pulse power | Supports robust protection against repetitive lightning-induced surges in industrial Ethernet and CAN bus nodes. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on downstream components during transient events. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and telecom equipment housings. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bi-directional clamping element placed between sensor line and ground, absorbing transients before they reach ADC input or signal conditioner. Use Value: Maintains signal integrity by limiting excursion to ≤87.1 V while drawing <1.0 μA at 54 V system bias - avoiding DC loading of high-Z sensor sources. | Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs exposed to relay coil flyback and ESD. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS pair on differential bus, suppressing common-mode and differential-mode surges simultaneously. Use Value: Symmetrical response ensures equal clamping on both A/B lines without polarity sensitivity, preserving differential signaling integrity during 500 W transients. |
| Telecom Power Feeding | Consumer Appliance Motor Control |
Use Scenario: Protecting PoE (Power over Ethernet) midspan injectors from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Bi-directional shunt clamp on DC supply rail upstream of DC-DC converter, diverting surge current away from regulation circuitry. Use Value: Withstands repeated 10/1000 μs pulses at 0.01% duty cycle and operates reliably up to +175 °C - matching thermal profile of sealed power enclosures. | Use Scenario: Shielding microcontroller GPIOs driving brushed DC motors in smart home appliances from commutation spikes. IC Role / Device Role / Timing Role: Localized TVS at motor driver output pins, clamping inductive kickback before it couples into logic-level circuitry. Use Value: Fast response time and low VC (87.1 V) prevent latch-up or gate oxide damage in 3.3 V/5 V MCUs while supporting AEC-Q101 reliability for extended product life. |
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-E3/52 | Uni-directional; 54 V VWM, 60–66.3 V VBR, same PPPM/VC, but SMA package (surface-mount). | Requires polarity-aware layout; unsuitable for AC or floating lines without external biasing. | Select when board space is constrained and signal path polarity is fixed. |
| 1.5KE54CA | Same bi-directional function, DO-201 package; higher PPPM (1500 W), larger footprint, higher VC (93.6 V). | Better for high-energy surges but less precise clamping; not AEC-Q101 qualified. | Select when surge energy exceeds 500 W and automotive qualification is not required. |
Compared with SMAJ54A-E3/52 and 1.5KE54CA, SA54CHE3/54 offers AEC-Q101 qualification, bi-directional symmetry, and DO-15 through-hole compatibility - making it optimal for automotive and industrial designs requiring proven reliability, polarity-agnostic placement, and legacy assembly support.
Availability
SA54CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom power feeding requiring stable component supply, traceable sourcing, and long-lifecycle availability.
Supply support for SA54CHE3/54 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, and protection devices with emphasis on reliability and automotive-grade validation.
The SAxxCH series is part of Vishay's TRANSZORB® TVS family, engineered specifically for bi-directional transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and stable parametric performance over temperature.
FAQ
What is the polarity configuration of SA54CHE3/54?
SA54CHE3/54 is a bi-directional TVS diode with symmetrical avalanche characteristics in both directions. It has no polarity marking on the DO-204AC package and functions identically regardless of terminal orientation - ideal for AC-coupled or floating signal lines where polarity cannot be guaranteed.
Is SA54CHE3/54 qualified for automotive use?
Yes, SA54CHE3/54 is AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 88378, Revision: 18-Sep-12). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of SA54CHE3/54 at rated peak pulse current?
The maximum clamping voltage (VC) of SA54CHE3/54 is 87.1 V at 5.7 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events.
Does SA54CHE3/54 meet RoHS and halogen-free requirements?
Yes, SA54CHE3/54 carries the HE3 suffix indicating RoHS compliance and AEC-Q101 qualification. Vishay confirms all HE3-suffix parts meet JEDEC JS709A halogen-free standards and Directive 2011/65/EU - verified via material declarations and testing per Vishay Document Number 91000.
How does SA54CHE3/54 differ from SA54A-E3/54?
SA54CHE3/54 is the AEC-Q101 qualified, bi-directional version; SA54A-E3/54 is uni-directional with cathode band marking. Both share identical VWM (54 V), VBR (60.0–66.3 V), and PPPM (500 W), but SA54CHE3/54 enables polarity-agnostic placement and is certified for automotive applications where reliability under thermal and mechanical stress is mandatory.
SA54CHE3/54 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):
- 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)
SA54CHE3/54 FAQ
1.How can I place an order for SA54CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA54CHE3/54 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 SA54CHE3/54 reliable?
The price and inventory of SA54CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA54CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA54CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA54CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA54CHE3/54?
SA54CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA54CHE3/54 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 SA54CHE3/54?
For technical support, including SA54CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA54CHE3/54 requirements.
6.How does Aetrix verify that SA54CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA54CHE3/54 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 SA54CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA54CHE3/54?
All SA54CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA54CHE3/54, 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 SA54CHE3/54 part is unused and in its original packaging.
Return procedure for SA54CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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