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Vishay General Semiconductor - Diodes Division SMBG15AHE3/52
- Part No.:
- SMBG15AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15AHE3/52.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,100
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Product details
Overview
SMBG15AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on power and signal lines. It features a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 24.4 V maximum clamping voltage (VC) at 24.6 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform), targeting automotive and industrial power rail protection.
For engineers reviewing the SMBG15AHE3/52 datasheet, SMBG15AHE3/52 pinout, SMBG15AHE3/52 application, or SMBG15AHE3/52 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, IFSM surge robustness (100 A, 8.3 ms), AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and RoHS-compliant HE3 suffix marking for automotive-grade reliability.
Technical Context
This TVS diode operates as a unidirectional shunt clamp, conducting only when reverse voltage exceeds VBR to divert surge energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 15 V), while the low incremental surge resistance enables tight clamping under high-current transients.
The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 600 W pulse rating applies under 10/1000 μs waveform at 0.01% duty cycle, with derating above 25 °C ambient per published thermal curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse working voltage before clamping begins; sets upper limit for normal operation without leakage degradation. |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown range defining turn-on threshold; ensures reliable activation before system overvoltage damage. |
| VC @ IPPM | 24.4 V at 24.6 A - Clamped voltage during 600 W surge; determines worst-case stress on protected IC's absolute maximum rating. |
| PPPM | 600 W (10/1000 μs) - Peak transient energy handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 events. |
| IFSM | 100 A (8.3 ms half-sine) - Non-repetitive forward surge rating; supports robustness against inrush or load-dump conditions in automotive 12 V systems. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments with minimal thermal derating. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB thermal layout requirements for sustained surge duty. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leaded case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (cathode-banded side is opposite) | Connected to ground or low-impedance return path; defines polarity for unidirectional clamping action. |
| Cathode | Reverse-biased clamping terminal (marked with band) | Connected to protected line (e.g., 12 V rail); conducts during overvoltage to shunt current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS subsystems per stress test requirements. |
| 600 W peak pulse power | Enables single-device protection against severe transients such as load dump (ISO 7637-2 Pulse 5a) without external series impedance. |
| Low clamping voltage (24.4 V) | Provides 63% margin below typical 36 V automotive absolute maximum ratings, reducing risk of downstream MOSFET or MCU latch-up. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage across temperature and humidity, critical for 15-year automotive service life. |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow assembly without preconditioning or special handling, simplifying SMT production. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between battery rail and local regulator input. Use Value: Limits transient voltage to ≤24.4 V, preventing damage to 36 V-rated DC-DC controllers and ensuring ASIL-B functional safety compliance. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC analog input modules. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential signal pair (e.g., 4–20 mA loop) referenced to system ground. Use Value: Clamps ESD (IEC 61000-4-2 ±8 kV contact) and fast transients (IEC 61000-4-4 ±2 kV) without distorting low-bandwidth sensor signals. |
| Consumer Power Adapter Input Stage | Telecom DC Feeding Line Protection |
Use Scenario: Input-side surge suppression in wall-mounted AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Primary-level TVS after bridge rectifier, before bulk capacitor and primary controller. Use Value: Absorbs 600 W line surges (IEC 61000-4-5) without thermal runaway, maintaining UL 62368-1 compliance and enabling compact form factor. | Use Scenario: Overvoltage protection on -48 V DC feeding lines powering remote radio units (RRUs) in 4G/5G base stations. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; SMBG15AHE3/52 used in unidirectional configuration with negative rail reference. Use Value: Withstands repeated lightning-induced surges up to 24.4 V clamping, preserving integrity of PoE-like DC distribution infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Same VWM (15 V), identical SMB (DO-214AA) package but 1.0 mm shorter length; RθJA = 110 °C/W vs. 100 °C/W. | Lower power density due to larger thermal resistance; requires larger copper area for equivalent thermal performance. | Select SMBJ15A-E3/52 only if legacy board design uses SMB footprint and thermal margin allows 10 °C/W higher RθJA. |
| 1.5SMC15A | Same electrical specs (VWM = 15 V, VC = 24.4 V), but in larger SMC (DO-214AB) package with 1.5× footprint and RθJA = 60 °C/W. | Better thermal performance enables higher repetitive surge duty, but incompatible with SMBG PCB layout. | Choose 1.5SMC15A where board space permits and enhanced thermal cycling endurance is required for harsh industrial environments. |
Compared with SMBJ15A-E3/52 and 1.5SMC15A, SMBG15AHE3/52 delivers optimal balance of AEC-Q101 qualification, compact DO-215AA footprint, and superior thermal resistance-making it preferred for new automotive and space-constrained industrial designs requiring validated reliability.
Availability
SMBG15AHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, consumer power adapters, and telecom DC feeding lines requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBG15AHE3/52 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, TVS, MOSFETs, and optoelectronics with emphasis on high-reliability, automotive-qualified, and industry-standard components.
The SMBG TRANSZORB® series is engineered specifically for robust transient suppression in automotive and industrial power systems, combining AEC-Q101 validation, low-profile packaging, and precise clamping performance for mission-critical voltage rail protection.
FAQ
What is the clamping voltage of SMBG15AHE3/52 under a 600 W transient?
The SMBG15AHE3/52 has a maximum clamping voltage (VC) of 24.4 V at 24.6 A peak pulse current, corresponding to the 600 W (10/1000 μs) surge condition. This value is measured per Figure 1 in the Vishay datasheet 88456 and defines the upper voltage limit imposed on protected circuitry during worst-case transients. The SMBG15AHE3/52 maintains this clamping performance across its specified operating temperature range.
Is SMBG15AHE3/52 qualified for automotive applications?
Yes, SMBG15AHE3/52 carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified per Vishay's ordering information table. This certification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, validating its use in automotive powertrain, chassis, and body electronics where reliability under thermal and vibration stress is mandatory. The SMBG15AHE3/52 meets all requirements for under-hood and cabin-mounted modules.
What does the "HE3" suffix mean in SMBG15AHE3/52?
The "HE3" suffix in SMBG15AHE3/52 denotes RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads meeting J-STD-002 solderability standards. It distinguishes this variant from industrial-grade E3 (RoHS, non-AEC-Q101) and HM3 (halogen-free, AEC-Q101) versions. The HE3 marking confirms the SMBG15AHE3/52 is intended for automotive applications requiring extended temperature operation and accelerated lifetime validation.
Can SMBG15AHE3/52 be used in bidirectional configurations?
No, SMBG15AHE3/52 is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix and cathode band marking. Bidirectional operation requires the CA suffix (e.g., SMBG15CA). Using SMBG15AHE3/52 in reverse-biased signal paths would result in forward conduction and potential failure. For symmetric transient protection, select SMBG15CA or pair two SMBG15AHE3/52 devices anode-to-anode.
What is the thermal resistance of SMBG15AHE3/52, and how does it affect layout?
The SMBG15AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly impacts PCB copper area requirements: reducing pad size increases RθJA, risking junction overheating during repetitive surges. Layout must follow Vishay's recommended mounting pad dimensions in datasheet Figure 5 to ensure SMBG15AHE3/52 remains within its 150 °C TJ limit.
SMBG15AHE3/52 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 24.6A
- 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)
SMBG15AHE3/52 FAQ
1.How can I place an order for SMBG15AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15AHE3/52 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 SMBG15AHE3/52 reliable?
The price and inventory of SMBG15AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG15AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG15AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15AHE3/52?
SMBG15AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15AHE3/52 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 SMBG15AHE3/52?
For technical support, including SMBG15AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15AHE3/52 requirements.
6.How does Aetrix verify that SMBG15AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG15AHE3/52 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 SMBG15AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG15AHE3/52?
All SMBG15AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15AHE3/52, 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 SMBG15AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG15AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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