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Vishay General Semiconductor - Diodes Division SMBJ17CAHE3_B/H
- Part No.:
- SMBJ17CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17CAHE3_B/H.pdf
- Description:
- 600W,17V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,533
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Product details
Overview
SMBJ17CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤27.6 V at 21.7 A peak surge current - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ17CAHE3_B/H datasheet, SMBJ17CAHE3_B/H pinout, SMBJ17CAHE3_B/H application, or SMBJ17CAHE3_B/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, clamping performance under IEC 61000-4-5 surges, thermal resistance (RθJA = 100 °C/W), and bidirectional polarity configuration for symmetric transient suppression.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche breakdown in both directions, enabling robust ESD and lightning surge immunity without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
The SMBJ17CAHE3_B/H is rated for repetitive 10/1000 µs surges at 0.01% duty cycle and handles non-repetitive 8.3 ms half-sine surges up to 100 A (unidirectional only - not applicable here due to bidirectional construction). Junction temperature range spans −55 °C to +150 °C, with thermal resistance from junction-to-ambient at 100 °C/W on standard 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 17 V - maximum continuous reverse voltage before clamping begins; defines operating margin below breakdown |
| VBR (Breakdown Voltage) | 18.9–20.9 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on during transients |
| VC (Clamping Voltage) | ≤27.6 V at IPPM = 21.7 A - peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream ICs |
| PPPM (Peak Pulse Power) | 600 W - surge energy handling capability per IEC 61000-4-5; enables protection against 1 kV/500 A line surges |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - negligible standby current; avoids loading of high-impedance signal paths |
| TJ max. | +150 °C - maximum junction temperature; supports operation in automotive under-hood and industrial ambient environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTOL, TC, and ESD; suffix HE3 denotes qualification |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals accept voltage transients equally in either direction. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional distinction - either terminal serves as input/output for transient energy; eliminates layout polarity constraints |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without derating |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure during clamping - critical for safeguarding 3.3 V and 5 V logic interfaces |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including infotainment, ADAS sensors, and body control modules |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| Glass-passivated junction | Ensures long-term VBR stability and low leakage drift across temperature and lifetime stress conditions |
Applications
| Industrial Sensor Interfaces | Automotive CAN Bus Lines |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to relay switching noise and motor drive coupling. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair (e.g., 4–20 mA loop or RS-485 bus). Use Value: Limits induced transients to <27.6 V, preventing latch-up or damage to precision ADC front-ends and isolators. |
Use Scenario: Surge suppression on CAN_H/CAN_L lines in vehicle ECUs subjected to ISO 7637-2 pulse 1/2/5a. IC Role / Device Role / Timing Role: Primary TVS on differential bus, mounted adjacent to connector with minimal trace inductance. Use Value: Clamps 10/1000 µs surges to ≤27.6 V while maintaining <1 µA leakage - preserves bus common-mode range and bit integrity. |
| Telecom Line Cards | Power Supply Input Rails |
Use Scenario: Secondary protection on Ethernet PHY interface or DSL line driver outputs facing field-induced surges. IC Role / Device Role / Timing Role: Fast-response shunt device placed after primary gas discharge tube or MOV. Use Value: Sub-1 ns response time captures residual fast-rising edges missed by slower primary protectors. |
Use Scenario: Input-side transient suppression on 24 V DC industrial power supplies feeding PLC I/O modules. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk input capacitor to clamp load-dump and inductive kickback. Use Value: Handles 600 W pulses without degradation, sustaining repeated 17 V stand-off during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CA-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VBR/VC/PPPM, identical SMB package | Lacks automotive qualification; suitable for consumer/commercial equipment where AEC-Q101 is not mandated | Select when cost sensitivity outweighs automotive reliability requirements and lifecycle assurance |
| SMCJ17CAHE3_A/H | Same electrical specs but in larger SMC (DO-214AB) package - higher thermal mass, RθJA = 40 °C/W vs. 100 °C/W | Better sustained surge handling in high-temperature enclosures; requires larger PCB footprint | Choose when system-level thermal management demands lower junction temperature rise under repetitive surges |
Compared with SMBJ17CAHE3_B/H, the E3/52 variant omits AEC-Q101 validation but matches all electrical parameters, while the SMCJ17CAHE3_A/H offers superior thermal performance at the cost of board space - enabling trade-offs between qualification rigor, thermal headroom, and layout density.
Availability
SMBJ17CAHE3_B/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive CAN bus protection, and telecom line card designs requiring stable component supply with automotive-grade reliability and RoHS-compliant sourcing.
Supply support for SMBJ17CAHE3_B/H 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, efficiency, and application-specific optimization.
The SMBJ series targets high-reliability transient suppression in space-constrained layouts, with design focus on automotive, industrial, and telecom systems needing certified, repeatable clamping performance under harsh EMI and surge conditions.
FAQ
What is the clamping voltage of SMBJ17CAHE3_B/H at its rated peak pulse current?
The SMBJ17CAHE3_B/H clamps to a maximum of 27.6 V at its specified peak pulse current of 21.7 A (10/1000 µs waveform). This value is measured under standardized test conditions per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ17CAHE3_B/H maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C), with minimal variation due to its glass-passivated junction.
Is SMBJ17CAHE3_B/H suitable for automotive applications?
Yes, SMBJ17CAHE3_B/H is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and Vishay's official documentation. It has undergone stress testing for high-temperature operating life, temperature cycling, and ESD robustness required for automotive electronics. The SMBJ17CAHE3_B/H is commonly used in CAN bus protection, body control modules, and sensor signal conditioning within passenger vehicles and commercial vehicles.
How does the bidirectional configuration of SMBJ17CAHE3_B/H affect its circuit placement?
The SMBJ17CAHE3_B/H has no polarity marking and functions identically in both directions, allowing placement across any two nodes subject to differential or common-mode transients without orientation constraints. This simplifies PCB layout for differential buses like RS-485 or CAN, eliminates risk of reverse installation, and enables use in AC-coupled signal paths where voltage polarity reverses during normal operation - a key advantage over unidirectional TVS diodes.
What is the thermal resistance of SMBJ17CAHE3_B/H, and how does it impact power dissipation?
The SMBJ17CAHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. At its rated 5.0 W steady-state power dissipation, this results in a 500 °C temperature rise above ambient - which is physically impossible; therefore, the 5.0 W rating applies only with infinite heatsinking. In practice, the SMBJ17CAHE3_B/H relies on short-duration surge handling (600 W for ≤1 ms), not continuous power, making RθJA relevant mainly for thermal recovery between pulses.
Does SMBJ17CAHE3_B/H meet RoHS and halogen-free requirements?
Yes, SMBJ17CAHE3_B/H is RoHS-compliant and AEC-Q101 qualified, as indicated by the "HE3" suffix. It is not halogen-free - that designation applies to "HM3" suffix variants. The SMBJ17CAHE3_B/H uses matte tin-plated leads compliant with J-STD-002 and passes JESD 201 Class 2 whisker testing. Material compliance documentation is available via Vishay's website under document number 99912.
SMBJ17CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ17CAHE3_B/H FAQ
1.How can I place an order for SMBJ17CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17CAHE3_B/H 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 SMBJ17CAHE3_B/H reliable?
The price and inventory of SMBJ17CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ17CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ17CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17CAHE3_B/H?
SMBJ17CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17CAHE3_B/H 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 SMBJ17CAHE3_B/H?
For technical support, including SMBJ17CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ17CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ17CAHE3_B/H 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 SMBJ17CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ17CAHE3_B/H?
All SMBJ17CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17CAHE3_B/H, 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 SMBJ17CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ17CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17CAHE3_B/H Tags
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