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Vishay General Semiconductor - Diodes Division SMB8J16CAHE3_A/H
- Part No.:
- SMB8J16CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHE3_A/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,437
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Product details
Overview
SMB8J16CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 16 V standoff voltage (VWM), 26.0 V maximum clamping voltage (VC) at 30.8 A peak pulse current (IPPM), and 800 W peak pulse power (10/1000 µs waveform), qualified to AEC-Q101 for automotive electronics.
For engineers reviewing the SMB8J16CAHE3_A/H datasheet, SMB8J16CAHE3_A/H pinout, SMB8J16CAHE3_A/H application, or SMB8J16CAHE3_A/H equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), junction temperature range (–55 °C to +150 °C), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical bidirectional conduction enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
The SMB8J16CAHE3_A/H delivers 800 W peak pulse power handling under standardized 10/1000 µs waveform conditions, with clamping voltage tightly controlled at ≤26.0 V up to 30.8 A, enabling robust protection of downstream ICs such as CAN transceivers, sensor interfaces, and microcontroller I/O pins against ISO 7637-2 and IEC 61000-4-5 surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe working margin for 12 V automotive systems. |
| VBR min/max | 17.8 V / 19.7 V - Breakdown voltage range at 1.0 mA test current; ensures reliable turn-on within defined tolerance band. |
| VC @ IPPM | 26.0 V - Clamping voltage at 30.8 A peak pulse current; limits voltage seen by protected circuit during surge event. |
| PPPM | 800 W - Peak pulse power dissipation capability (10/1000 µs); determines survivability against high-energy transients. |
| IPPM | 30.8 A - Peak pulse current supported at rated clamping voltage; correlates directly with system-level surge immunity level. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments with minimal derating. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance; informs PCB pad design (0.2" × 0.2" copper per terminal) for thermal management. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping requires no orientation during placement. |
| Cathode Band (absent) | Polarity indicator | Not present - confirms bidirectional construction; eliminates risk of incorrect orientation in layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and HTRB testing - required for engine control, ADAS, and body electronics. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without preconditioning - reduces manufacturing complexity and cost. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) over lifetime - critical for low-power sensor and CAN bus protection. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients - improves protection margin for sensitive 3.3 V or 5 V logic interfaces. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed automotive and industrial enclosures - supports regulatory compliance. |
Applications
| Automotive Power Line Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary clamping element placed at power entry point upstream of DC/DC converters and LDOs. Use Value: Limits input voltage to ≤26.0 V during 800 W surge events, preventing overvoltage damage to downstream regulators and microcontrollers. |
Use Scenario: Shielding high-speed CAN FD transceivers (e.g., TJA1044) from ESD and coupled noise on differential bus lines. IC Role / Device Role / Timing Role: Bidirectional shunt protector across CAN_H/CAN_L pair, responding within nanoseconds to transients. Use Value: Maintains signal integrity by clamping common-mode surges without affecting differential signaling, supporting >5 Mbps data rates. |
| Industrial Sensor Interface Protection | Consumer USB Port Surge Guard |
Use Scenario: Safeguarding analog outputs (4–20 mA, 0–10 V) and digital I/O of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Localized TVS at sensor connector or PCB edge, absorbing induced lightning surges from long cable runs. Use Value: Withstands repeated 30.8 A pulses while maintaining <1.0 µA leakage at 16 V - preserves measurement accuracy and long-term stability. |
Use Scenario: Adding secondary surge protection to USB 2.0 Type-A ports in smart home hubs and docking stations exposed to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on VBUS and D+/D− lines, placed after primary ESD array. Use Value: Provides 800 W system-level surge margin beyond IEC 61000-4-2 ±15 kV contact discharge, extending product field 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 |
|---|---|---|---|
| SMBJ16CAHE3_A/H | Same VWM (16 V) and VC (26.0 V), but rated for 600 W PPPM and 24.3 A IPPM; lower surge capacity. | Less suitable for ISO 7637-2 Pulse 5a load dump; adequate for IEC 61000-4-5 Level 3 (1 kV/42 Ω). | Select when system-level surge energy is lower and cost optimization is prioritized over headroom. |
| SMAJ16CAHE3_A/H | Same VWM/VC, but in smaller SMA (DO-214AC) package; RθJA = 95 °C/W and PPPM = 400 W. | Limited thermal mass reduces sustained surge handling; not recommended for under-hood automotive use above 85 °C ambient. | Choose only for space-constrained consumer or industrial designs where peak power demand is ≤400 W. |
Compared with SMBJ16CAHE3_A/H and SMAJ16CAHE3_A/H, the SMB8J16CAHE3_A/H provides 33 % higher peak pulse power (800 W vs. 600 W) and 27 % greater thermal margin (RθJA = 72 °C/W), making it the preferred choice for AEC-Q101-compliant automotive power rail protection where surge energy and ambient temperature are elevated.
Availability
SMB8J16CAHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, CAN bus systems, and consumer USB port protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMB8J16CAHE3_A/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMB8JxxCAHE3 series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, AEC-Q101-qualified transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB8J16CAHE3_A/H at its rated peak pulse current?
The SMB8J16CAHE3_A/H has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 30.8 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuits will not experience voltages exceeding 26.0 V during surge events, preserving functionality of 3.3 V, 5 V, and 12 V ICs. The SMB8J16CAHE3_A/H achieves this with low incremental surge resistance and a glass-passivated junction for consistent performance.
Is SMB8J16CAHE3_A/H suitable for automotive applications?
Yes, SMB8J16CAHE3_A/H is explicitly AEC-Q101 qualified and manufactured with automotive-grade process controls, including stress testing for temperature cycling, high-temperature reverse bias, and humidity exposure. Its –55 °C to +150 °C operating range, MSL Level 1 reflow compatibility, and RoHS-compliant HE3 suffix make it approved for use in engine control units, body control modules, and ADAS sensors. The SMB8J16CAHE3_A/H meets the reliability and traceability requirements mandated for Tier 1 automotive supply chains.
How does SMB8J16CAHE3_A/H differ from unidirectional variants like SMB10J16AHE3_A/H?
The SMB8J16CAHE3_A/H is bidirectional, meaning it clamps both positive and negative transients symmetrically across its terminals, with no cathode marking required. In contrast, SMB10J16AHE3_A/H is unidirectional, featuring a cathode band and conducting only in reverse bias - suitable for DC power rails where polarity is fixed. The SMB8J16CAHE3_A/H offers 800 W PPPM, while SMB10J16AHE3_A/H delivers 1000 W but requires correct orientation. Use SMB8J16CAHE3_A/H for AC-coupled or differential signal lines like CAN, LIN, or RS-485.
What PCB layout guidance applies to SMB8J16CAHE3_A/H for optimal thermal and surge performance?
Vishay specifies mounting SMB8J16CAHE3_A/H on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 800 W pulse power and maintain RθJA = 72 °C/W. Avoid thermal relief spokes on pads; use solid copper pours connected to internal ground/power planes via multiple vias. Keep traces short and wide between SMB8J16CAHE3_A/H and protected node to minimize inductance. The SMB8J16CAHE3_A/H datasheet Figure 2 provides derating curves for elevated ambient temperatures.
Does SMB8J16CAHE3_A/H meet UL 94 flammability requirements?
Yes, the SMB8J16CAHE3_A/H uses a molding compound certified to UL 94 V-0 flammability rating, meaning it self-extinguishes within 10 seconds after flame removal and produces no flaming drips. This certification is critical for enclosed automotive junction boxes, industrial control panels, and consumer devices subject to safety agency reviews (e.g., UL, CSA, TÜV). The UL 94 V-0 compliance is documented in Vishay's mechanical data section and applies to the SMB (DO-214AA) package used by SMB8J16CAHE3_A/H.
SMB8J16CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 30.8A
- Power - Peak Pulse:
- 800W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J16CAHE3_A/H FAQ
1.How can I place an order for SMB8J16CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHE3_A/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 SMB8J16CAHE3_A/H reliable?
The price and inventory of SMB8J16CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J16CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHE3_A/H?
SMB8J16CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHE3_A/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 SMB8J16CAHE3_A/H?
For technical support, including SMB8J16CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHE3_A/H requirements.
6.How does Aetrix verify that SMB8J16CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHE3_A/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 SMB8J16CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHE3_A/H?
All SMB8J16CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHE3_A/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 SMB8J16CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMB8J16CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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