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Vishay General Semiconductor - Diodes Division SMBG70CAHE3/5B
- Part No.:
- SMBG70CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG70CAHE3/5B.pdf
- Description:
- TVS DIODE 70VWM 113VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,374
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Product details
Overview
SMBG70CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on signal and power lines. It features 70 V stand-off voltage (VWM), 77.8–86.0 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), <1.0 μA reverse leakage at VWM, and 113 A peak pulse current (IPPM). It is AEC-Q101 qualified and used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMBG70CAHE3/5B datasheet, SMBG70CAHE3/5B pinout, SMBG70CAHE3/5B application, or SMBG70CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, 70 V working voltage compatibility with 12 V/24 V automotive systems, low clamping voltage (113 V at IPPM), RoHS-compliant AEC-Q101 qualification, and SMBG package suitability for automated SMT assembly.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical breakdown and clamping characteristics in forward and reverse directions. Its glass-passivated junction ensures stable surge performance and low incremental surge resistance, critical for repetitive transient suppression in automotive environments.
The device meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 150 °C maximum junction temperature, and delivers 600 W peak pulse power under standardized 10/1000 μs waveform conditions - enabling robust protection against ISO 7637-2 load dump and EFT/burst events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous reverse operating voltage before clamping begins; matches nominal 24 V automotive supply rails with margin. |
| VBR (min/max) | 77.8 V / 86.0 V at 1 mA - Confirmed breakdown range ensures reliable triggering above VWM without premature conduction. |
| VC @ IPPM | 113 V at 113 A - Clamping voltage limits downstream IC stress during 600 W transient events; <1.6× VWM ratio indicates strong suppression efficiency. |
| IPPM | 113 A - Peak surge current handling capacity under 10/1000 μs waveform; sufficient for ISO 16750-2 pulse 5a (load dump) simulation. |
| PPPM | 600 W - Standardized peak pulse power rating defines energy-handling capability for transient immunity compliance testing. |
| TJmax | +150 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures. |
| Qualification | AEC-Q101 - Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per JEDEC standards. |
Pinout & Package
Package: SMBG (DO-215AA) - surface-mount, low-profile gull-wing package with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity event) | One terminal of symmetrical junction; conducts during negative-going surges to clamp voltage below -113 V. |
| Cathode | Transient current entry (positive polarity event) | Second terminal of symmetrical junction; conducts during positive-going surges to clamp voltage above +113 V. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power | Validated under 10/1000 μs waveform allows robust defense against high-energy transients like inductive switching spikes in solenoid drivers. |
| AEC-Q101 qualification | Qualified for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces requiring long-term field reliability. |
| Low-profile SMBG package | DO-215AA footprint (6.48 mm × 3.94 mm) supports high-density PCB layouts and automated placement with J-STD-020 MSL Level 1 reflow compatibility. |
| Glass-passivated junction | Enhances surge lifetime and stability across temperature extremes, reducing parameter drift after repeated transient events. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine bay and chassis modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor signal and ground to shunt ESD and load-dump-induced transients. Use Value: Prevents latch-up or damage to 12-bit ADC front-ends by limiting transient excursions to ≤113 V while maintaining 70 V DC operating margin. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair in vehicle network gateways and ECU nodes exposed to battery line coupling. IC Role / Device Role / Timing Role: Common-mode TVS pair (one SMBG70CAHE3/5B per line) suppressing common-mode surges without distorting 1 Mbps CAN signaling. Use Value: Maintains signal integrity during ISO 16750-2 pulse 4 (alternator load dump) by clamping common-mode spikes within CAN transceiver absolute max ratings. |
| Power Supply Input Protection | Motor Drive Feedback Circuit |
|
Use Scenario: Input-stage surge suppression for 24 V DC-DC converters in commercial vehicles and off-highway equipment. IC Role / Device Role / Timing Role: Primary overvoltage clamp on converter input rail, upstream of input filter and controller IC. Use Value: Absorbs up to 600 W of transient energy without failure, preventing regulator shutdown or MOSFET avalanche during alternator transients. |
Use Scenario: Protecting hall-effect or encoder feedback signals in BLDC motor drives subject to commutation noise and back-EMF coupling. IC Role / Device Role / Timing Role: Point-of-entry TVS on low-voltage analog feedback path (e.g., 5 V or 3.3 V) to isolate microcontroller ADC inputs. Use Value: Limits coupled transients to <113 V, ensuring feedback accuracy remains within ±0.5% full-scale error during 10 kHz PWM switching events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70CA-E3/5B | Same VWM (70 V), but lower PPPM = 600 W (same rating), higher VC = 115 V; SMB (DO-214AA) package, slightly larger footprint. | Compatible for board-level replacement where pad layout allows DO-214AA; less suitable for ultra-dense automotive modules targeting DO-215AA space savings. | Select when existing design uses SMB footprint or requires broader distributor availability; verify thermal relief pad compatibility. |
| SMCJ70CAHE3/5B | Same VWM and bidirectional function, but higher PPPM = 1500 W and larger SMC (DO-214AB) package; VC = 113 V unchanged. | Used where higher surge margin is required (e.g., heavy-duty truck battery inputs); incompatible with SMBG land pattern due to 7.11 mm × 6.22 mm outline. | Choose only if system-level surge testing exceeds 600 W requirements; requires PCB redesign and increased board area. |
Compared with SMBJ70CA-E3/5B and SMCJ70CAHE3/5B, SMBG70CAHE3/5B offers identical clamping performance in the smallest qualified footprint, making it optimal for space-constrained AEC-Q101 designs where 600 W rating suffices and DO-215AA placement is specified.
Availability
SMBG70CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, and 24 V power supply input protection requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBG70CAHE3/5B 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 and application-specific performance.
The SMBG series was developed for high-reliability surface-mount transient suppression in automotive and industrial environments, prioritizing AEC-Q101 qualification, low-profile packaging, and consistent bidirectional clamping behavior.
FAQ
What is the breakdown voltage range for SMBG70CAHE3/5B?
The SMBG70CAHE3/5B has a minimum breakdown voltage (VBR) of 77.8 V and a maximum of 86.0 V at 1 mA test current, as specified in the Vishay datasheet revision 09-Jan-2024. This range ensures reliable triggering above its 70 V stand-off voltage while accommodating process variation. The SMBG70CAHE3/5B maintains this specification across its full operating temperature range.
Is SMBG70CAHE3/5B suitable for automotive applications?
Yes, SMBG70CAHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and chassis-mounted modules. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and 600 W surge capability align with ISO 16750-2 and ISO 7637-2 requirements. The SMBG70CAHE3/5B is commonly deployed in engine control units and ADAS sensor interfaces.
What does the "HE3" suffix indicate in SMBG70CAHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from industrial-grade "E3" variants. Per Vishay's ordering documentation, HE3 parts undergo additional stress testing and lot-level validation to meet automotive reliability standards. The SMBG70CAHE3/5B is therefore certified for mission-critical automotive electronics, not just general-purpose industrial use.
How does SMBG70CAHE3/5B differ from unidirectional SMBG70AHE3/5B?
The SMBG70CAHE3/5B is bidirectional, providing symmetrical clamping for both positive and negative transients, whereas SMBG70AHE3/5B is unidirectional and conducts only in reverse bias. This makes SMBG70CAHE3/5B ideal for AC-coupled or floating lines like CAN bus or sensor outputs, while SMBG70AHE3/5B suits DC power rails with defined polarity. Their VWM, VBR, and VC values differ accordingly.
What is the maximum clamping voltage of SMBG70CAHE3/5B at rated surge current?
The SMBG70CAHE3/5B clamps to a maximum of 113 V at its rated peak pulse current (IPPM) of 113 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's electrical characteristics table. The low clamping ratio (113 V / 70 V ≈ 1.61) reflects efficient transient energy diversion, critical for protecting downstream 100 V-rated components.
SMBG70CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 5.3A
- Power - Peak Pulse:
- 600W
- 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 (SMBG)
SMBG70CAHE3/5B FAQ
1.How can I place an order for SMBG70CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG70CAHE3/5B 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 SMBG70CAHE3/5B reliable?
The price and inventory of SMBG70CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG70CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG70CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG70CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG70CAHE3/5B?
SMBG70CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG70CAHE3/5B 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 SMBG70CAHE3/5B?
For technical support, including SMBG70CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG70CAHE3/5B requirements.
6.How does Aetrix verify that SMBG70CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG70CAHE3/5B 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 SMBG70CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG70CAHE3/5B?
All SMBG70CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG70CAHE3/5B, 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 SMBG70CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG70CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG70CAHE3/5B Tags
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