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Vishay General Semiconductor - Diodes Division SA10CHE3/73
- Part No.:
- SA10CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA10CHE3/73.pdf
- Description:
- TVS DIODE 10VWM 18.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,032
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Product details
Overview
SA10CHE3/73 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 10 V stand-off voltage (VWM), 12.3 V maximum breakdown voltage (VBR), 17.0 V clamping voltage at 29.4 A peak pulse current (IPPM), 500 W peak pulse power (PPPM), and AEC-Q101 qualification for automotive reliability.
For engineers reviewing the SA10CHE3/73 datasheet, SA10CHE3/73 pinout, SA10CHE3/73 application, or SA10CHE3/73 equivalent, this device is selected for robust overvoltage protection in automotive sensor interfaces, industrial I/O lines, and telecom line-card surge immunity where bi-directional clamping, low clamping ratio, and high surge current handling are critical.
Technical Context
The SA10CHE3/73 operates as a bi-directional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 10/1000 µs waveform rating reflects standardized lightning-surge immunity testing per ANSI/IEEE C62.35.
Thermal design is constrained by a 3.0 W steady-state power dissipation limit at TL = 75 °C and a maximum junction temperature of 175 °C, with derating required above 25 °C ambient. The device exhibits a +0.01 %/°C temperature coefficient of VBR, indicating minimal drift across operating temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse voltage before significant leakage; defines safe operating window for protected circuitry. |
| VBR (min/max) | 11.1 V / 12.3 V - Breakdown occurs within this range at 1 mA test current; ensures predictable clamping onset. |
| VC @ IPPM | 17.0 V at 29.4 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream components. |
| PPPM | 500 W - Peak transient energy absorption capability; supports IEC 61000-4-5 Level 4 surge compliance when properly implemented. |
| ID @ VWM | <1.0 µA - Reverse leakage at stand-off voltage; minimizes standby power loss and avoids false triggering. |
| TJ max. | 175 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Bi-directional construction means no polarity marking on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally once VBR is exceeded in either polarity. |
| Lead 1 / Lead 2 | Connection interface | Leads provide mechanical attachment and thermal path to PCB; no functional distinction between ends. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repeated surge events. |
| 500 W peak pulse power (10/1000 µs) | Supports high-energy transient suppression without degradation, suitable for industrial and automotive load-dump scenarios. |
| AEC-Q101 qualification | Validates suitability for automotive electronics including engine control units, body modules, and ADAS sensor interfaces. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for sensitive ICs. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualified, whisker-tested (JESD 201 Class 2), and halogen-free construction. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional clamping element placed at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) with clamping voltage ≤17.0 V, preventing damage to 12 V rail-tolerant receivers. | Use Scenario: Safeguarding PLC digital input channels against induced surges from relay coil switching and motor drive noise in factory automation systems. IC Role / Device Role / Timing Role: Primary front-end TVS on 24 V DC input lines, operating in parallel with series impedance to limit let-through energy. Use Value: Absorbs 500 W surges with <1.0 µA leakage at 10 V, enabling high-impedance sensing while maintaining low standby current. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control |
Use Scenario: Secondary protection on POTS or xDSL line interfaces exposed to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Fast-response clamping device placed after primary gas discharge tube (GDT) to handle residual fast-rising transients. Use Value: 10/1000 µs response delivers 17.0 V clamping at 29.4 A, reducing peak voltage seen by line driver ICs below absolute maximum ratings. | Use Scenario: Overvoltage suppression on brushed DC motor commutation paths in white goods (e.g., washing machine drum drives). IC Role / Device Role / Timing Role: Snubber-style TVS across motor terminals to clamp inductive kickback during MOSFET switching transitions. Use Value: Withstands repetitive 500 W pulses at 0.01% duty cycle, extending MOSFET lifetime and reducing EMI emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10CA | Same DO-214AC (SMA) package, identical VWM/VBR/VC specs, but lower 400 W PPPM rating. | Surface-mount alternative requiring PCB rework; less suitable for through-hole legacy designs or high-vibration environments. | Select SMAJ10CA only when space-constrained SMT layout is mandatory and 400 W surge margin is sufficient. |
| P6KE10CA | DO-204AL (DO-41) package, same VWM/VBR/VC, 600 W PPPM, but larger footprint and higher thermal mass. | Higher surge capacity suits harsher industrial settings; lead form factor allows easier manual repair or prototyping. | Choose P6KE10CA when 600 W headroom is needed or when DO-41 compatibility with existing tooling is required. |
Compared with SMAJ10CA and P6KE10CA, SA10CHE3/73 offers AEC-Q101 qualification and JESD 201 Class 2 whisker resistance in the compact DO-15 through-hole package-making it optimal for automotive production and vibration-prone industrial deployments where reliability and proven qualification outweigh minor power rating differences.
Availability
SA10CHE3/73 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and telecom line-card surge immunity requiring stable component supply and long-term lifecycle support.
Supply support for SA10CHE3/73 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, MOSFETs, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SAxxxA/SAxxxCA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for high-reliability transient suppression in automotive, industrial, and communications infrastructure where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SA10CHE3/73 and how does it protect downstream circuits?
The SA10CHE3/73 has a maximum clamping voltage (VC) of 17.0 V at 29.4 A peak pulse current (10/1000 µs waveform). This value represents the highest voltage that will appear across protected circuitry during a surge event. By limiting the transient voltage to ≤17.0 V, the SA10CHE3/73 ensures that downstream components rated for 20 V absolute maximum-such as many automotive microcontrollers and transceivers-remain within safe operating limits. Its low clamping ratio (VC/VWM ≈ 1.7) reflects efficient energy diversion without excessive overshoot.
Is SA10CHE3/73 suitable for automotive applications, and what qualifications does it hold?
Yes, SA10CHE3/73 is explicitly qualified to AEC-Q101 for automotive use. The "HE3" suffix denotes RoHS compliance, AEC-Q101 qualification, and JESD 201 Class 2 whisker resistance-critical for under-hood and chassis-mounted electronics subject to thermal cycling and vibration. Its 175 °C maximum junction temperature and stable VBR temperature coefficient (+0.01 %/°C) further validate its suitability for engine control units, body control modules, and ADAS sensor interfaces where environmental stress is severe.
How does the bi-directional configuration of SA10CHE3/73 affect its placement in a circuit?
The bi-directional nature of SA10CHE3/73 means it functions identically regardless of voltage polarity-no cathode marking is present, and either lead may connect to either side of a differential or AC-coupled signal path. This simplifies layout for symmetric interfaces like RS-485, CAN bus, or transformer-coupled Ethernet PHYs, eliminating orientation errors during assembly. Unlike uni-directional TVS diodes, SA10CHE3/73 provides equal clamping in both directions, making it ideal for protecting floating or bidirectional data lines without additional polarity-aware design constraints.
What is the meaning of the "HE3" and "/73" suffixes in SA10CHE3/73?
The "HE3" suffix indicates AEC-Q101 qualification, RoHS compliance, and JESD 201 Class 2 whisker resistance-distinguishing it from commercial-grade "E3" variants. The "/73" denotes the preferred packaging option: 73 = 7" diameter plastic tape and reel, standard for automated pick-and-place assembly. This packaging format contains 4000 units per reel and complies with EIA-481-D standards, ensuring compatibility with high-volume SMT production lines used in automotive and industrial manufacturing.
Can SA10CHE3/73 be used in parallel to increase surge current handling?
No, SA10CHE3/73 should not be paralleled for increased current handling due to inherent parameter variation (e.g., VBR tolerance ±5%) causing uneven current sharing and potential thermal runaway. Each SA10CHE3/73 must be applied per protected node. For higher surge requirements, select a single higher-rated device (e.g., SA15CHE3/73) or implement staged protection with upstream GDTs and downstream SA10CHE3/73 for energy division. Parallel use voids AEC-Q101 qualification guarantees and compromises reliability in automotive applications.
SA10CHE3/73 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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 26.6A
- 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)
SA10CHE3/73 FAQ
1.How can I place an order for SA10CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA10CHE3/73 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 SA10CHE3/73 reliable?
The price and inventory of SA10CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA10CHE3/73 is usually 5 days.
3.What payment methods are accepted for SA10CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA10CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA10CHE3/73?
SA10CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA10CHE3/73 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 SA10CHE3/73?
For technical support, including SA10CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA10CHE3/73 requirements.
6.How does Aetrix verify that SA10CHE3/73 is sourced from the original manufacturer or authorized distributors?
All SA10CHE3/73 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 SA10CHE3/73 meets industry standards.
7.What is the process for return or replacement of SA10CHE3/73?
All SA10CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA10CHE3/73, 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 SA10CHE3/73 part is unused and in its original packaging.
Return procedure for SA10CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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