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Vishay General Semiconductor - Diodes Division SMBG70CAHE3/52
- Part No.:
- SMBG70CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG70CAHE3/52.pdf
- Description:
- TVS DIODE 70VWM 113VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,910
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Product details
Overview
SMBG70CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of signal and power lines. It features a 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), clamping voltage of 113 V at 5.3 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMBG70CAHE3/52 datasheet, SMBG70CAHE3/52 pinout, SMBG70CAHE3/52 application, or SMBG70CAHE3/52 equivalent, key selection criteria include bidirectional surge handling, low clamping ratio (VC/VBR ≈ 1.4), MSL Level 1 reflow compatibility, TJ = –55 °C to +150 °C operation, and RoHS-compliant AEC-Q101 qualified construction.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 70 V), but triggers into low-impedance conduction when transients exceed VBR, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage and fast response (<1 ns).
The SMBG70CAHE3/52 is rated for 600 W peak pulse power with 10/1000 μs waveform at 0.01% duty cycle, supports 5.3 A peak pulse current (IPPM), and exhibits 20 °C/W junction-to-lead thermal resistance - enabling effective heat dissipation during repetitive surges when mounted on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (min/max) | 77.8 V / 86.0 V at 1 mA - precise breakdown threshold ensuring predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 113 V at 5.3 A - clamping voltage limits protected IC stress during 600 W surge; clamping ratio = 1.46. |
| PPPM | 600 W - peak surge power handling capability per 10/1000 μs waveform; validates protection against IEC 61000-4-5 Level 4 transients. |
| IFSM | Not applicable - bidirectional configuration lacks forward surge rating; only unidirectional variants specify 100 A 8.3 ms rating. |
| TJ range | –55 °C to +150 °C - extended junction temperature range supports under-hood automotive and industrial environments. |
| Qualification | AEC-Q101 qualified - validated for automotive reliability including HTOL, TCT, ESD, and mechanical stress testing. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount gull-wing lead frame with matte tin-plated terminals, 0.235" × 0.255" (5.97 mm × 6.48 mm) footprint, MSL Level 1 (260 °C peak reflow), UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode | Bidirectional terminals | No polarity marking; symmetric structure enables identical clamping in both directions - eliminates orientation concerns during placement. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial and automotive electronics. |
| AEC-Q101 qualification | Confirms reliability for automotive ECUs, ADAS sensors, and infotainment systems subject to harsh thermal and vibration profiles. |
| Glass passivated junction | Ensures stable reverse leakage (<1 μA at 70 V) and long-term parameter stability under humidity and bias stress. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving system-level robustness. |
| MSL Level 1, 260 °C peak | Enables standard SMT reflow without pre-baking; compatible with high-volume automated assembly lines. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver power rails and wake-up lines from load dump and jump-start transients in vehicle body control modules. IC Role / Device Role: Bidirectional shunt clamp absorbing up to 600 W surges while limiting rail voltage to ≤113 V. Use Value: Prevents damage to 5 V/12 V LDOs and transceivers during ISO 16750-2 tests; AEC-Q101 qualification ensures field reliability. |
Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O (RS-485, SPI) of PLC I/O modules exposed to inductive switching noise. IC Role / Device Role: Fast-response TVS placed at connector entry point to clamp EFT bursts and lightning-induced surges. Use Value: Maintains signal integrity by clamping transients within 1 ns; low VC/VBR ratio minimizes stress on downstream op-amps and isolators. |
| Telecom Data Line Surge Suppression | Consumer Device USB/DisplayPort ESD Protection |
Use Scenario: Shielding Ethernet PHY interfaces (10/100BASE-TX) and PoE injectors from induced surges in outdoor telecom cabinets. IC Role / Device Role: Primary-level bidirectional TVS on differential pairs, coordinated with secondary GDT or polymer PTC. Use Value: Handles 10/1000 μs surges up to 5.3 A without degradation; UL 497B recognition supports safety certification. |
Use Scenario: Protecting high-speed data lanes (USB 2.0, eDP) in laptops and monitors from human-body-model (HBM) ESD events. IC Role / Device Role: Low-capacitance (CJ < 100 pF at 0 V) bidirectional clamp placed adjacent to connector. Use Value: Preserves signal rise time and eye diagram integrity while meeting IEC 61000-4-2 ±15 kV contact discharge requirement. |
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-E3/52 | Same VWM (70 V), lower PPPM (600 W → 400 W), higher VC (115 V vs. 113 V), non-AEC-Q101. | Limited to commercial/industrial use; not qualified for automotive under-hood deployment. | Select SMBJ70CA-E3/52 only if AEC-Q101 is unnecessary and board space allows larger SMB (DO-214AA) footprint. |
| SMCJ70CAHE3/52 | Same VWM and AEC-Q101, but higher PPPM (1500 W), larger SMC (DO-214AB) package, VC = 113 V. | Supports higher-energy surges (e.g., ISO 7637-2 pulse 5a); requires larger PCB area and thermal relief. | Choose SMCJ70CAHE3/52 when system-level surge testing exceeds 600 W or when longer surge duration must be accommodated. |
Compared with SMBJ70CA-E3/52 and SMCJ70CAHE3/52, the SMBG70CAHE3/52 uniquely balances AEC-Q101 qualification, 600 W surge capacity, and compact SMBG footprint - making it optimal for space-constrained automotive modules requiring certified reliability without over-engineering.
Availability
SMBG70CAHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom interface protection, and consumer display interface designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG70CAHE3/52 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series was developed to deliver AEC-Q101-qualified, high-power-density TVS diodes in ultra-low-profile packages for next-generation automotive and industrial electronics demanding robust transient immunity in minimal board space.
FAQ
What is the clamping voltage of SMBG70CAHE3/52 and how does it protect downstream components?
The SMBG70CAHE3/52 clamps at 113 V when subjected to its rated 5.3 A peak pulse current (10/1000 μs waveform). This limits voltage seen by protected ICs to a safe level well below their absolute maximum ratings. Its low clamping ratio (VC/VBR ≈ 1.46) ensures minimal overvoltage stress during fast transients, directly preserving the integrity of sensitive transceivers and power management ICs in the SMBG70CAHE3/52-protected circuit.
Is SMBG70CAHE3/52 suitable for automotive applications, and what qualifications does it hold?
Yes, SMBG70CAHE3/52 is explicitly AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and ESD (HBM ≥ 8 kV). Its –55 °C to +150 °C operating range, MSL Level 1 reflow compatibility, and RoHS compliance make it suitable for under-hood and cabin automotive modules. The "HE3" suffix confirms this AEC-Q101 qualification for the SMBG70CAHE3/52 device.
How does the bidirectional nature of SMBG70CAHE3/52 affect its circuit implementation?
The SMBG70CAHE3/52 has no polarity marking and functions identically in both directions - ideal for protecting AC-coupled lines, differential buses (e.g., CAN, RS-485), or dual-rail supplies where voltage reversal may occur. Unlike unidirectional TVS diodes, it eliminates orientation errors during placement and avoids the need for back-to-back configurations, simplifying layout and reducing BOM count while maintaining symmetrical clamping performance in the SMBG70CAHE3/52 design.
What is the thermal resistance profile of SMBG70CAHE3/52, and how does it impact surge handling?
The SMBG70CAHE3/52 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, enabling efficient heat transfer from the silicon die to the PCB copper pads. When mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, this allows the SMBG70CAHE3/52 to sustain repetitive 600 W surges without exceeding its 150 °C maximum junction temperature - critical for applications with frequent transient events like motor drive feedback loops.
Does SMBG70CAHE3/52 meet industry safety standards, and which ones are verified?
Yes, SMBG70CAHE3/52 is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional protectors per UL 497B, covering telecommunications and signal line protection. It also meets JESD201 Class 2 whisker resistance, J-STD-020 MSL Level 1, and RoHS Directive 2011/65/EU. These certifications are documented for the SMBG70CAHE3/52 part number in Vishay's official datasheet (Doc. #88456, Rev. 09-Jan-2024).
SMBG70CAHE3/52 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)
SMBG70CAHE3/52 FAQ
1.How can I place an order for SMBG70CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG70CAHE3/52 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 SMBG70CAHE3/52 reliable?
The price and inventory of SMBG70CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG70CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG70CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG70CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG70CAHE3/52?
SMBG70CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG70CAHE3/52 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 SMBG70CAHE3/52?
For technical support, including SMBG70CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG70CAHE3/52 requirements.
6.How does Aetrix verify that SMBG70CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG70CAHE3/52 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 SMBG70CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG70CAHE3/52?
All SMBG70CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG70CAHE3/52, 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 SMBG70CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG70CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG70CAHE3/52 Tags
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