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Vishay General Semiconductor - Diodes Division SMB8J15CAHE3_A/H
- Part No.:
- SMB8J15CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J15CAHE3_A/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB8J15CAHE3_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 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage (VC) at 32.8 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - suitable for automotive sensor interface and industrial I/O line protection.
For engineers reviewing the SMB8J15CAHE3_A/H datasheet, SMB8J15CAHE3_A/H pinout, SMB8J15CAHE3_A/H application, or SMB8J15CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.63), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while the bidirectional configuration enables symmetric suppression of positive and negative polarity surges without polarity-sensitive layout constraints.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 72 °C/W and RθJL = 20 °C/W. It meets ANSI/IEEE C62.35 standards for surge immunity and is qualified to AEC-Q101 for automotive under-hood and chassis applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 16.7 V / 18.5 V at 1.0 mA - verified breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 24.4 V at 32.8 A - clamping voltage limits downstream IC stress during 800 W transient; clamping ratio = 1.63. |
| PPPM | 800 W (10/1000 µs) - energy-handling capacity sufficient for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on sensor circuits. |
| TJ max | +150 °C - supports under-hood automotive environments and industrial enclosures without derating. |
| Package | SMB (DO-214AA) - surface-mount footprint (4.57 mm × 3.94 mm × 2.20 mm) compatible with standard reflow profiles and J-STD-020 MSL Level 1. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; bidirectional symmetry means no cathode marking - both terminals are electrically identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve as interchangeable surge conduction paths; no polarity dependency simplifies PCB routing. |
| Case (body) | Thermal and mechanical interface | Plastic body provides UL 94 V-0 flammability rating; copper pad mounting (0.2" × 0.2") required for rated PPPM performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JESD47. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments. |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes voltage overshoot during clamping - critical for protecting 3.3 V or 5 V logic interfaces downstream. |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without baking or special handling; reduces manufacturing cost and risk. |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS compliance; HM3 suffix adds halogen-free construction for stringent environmental programs. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and inductive kickback in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed directly at connector entry point to divert surge energy before reaching signal conditioning circuitry. Use Value: Withstands ISO 7637-2 Pulse 5a (load dump up to 60 V) and maintains <1.0 µA leakage to avoid biasing errors in precision ADC reference paths. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring transients and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminal blocks, coordinated with series impedance and filtering to meet IEC 61000-4-4/5 immunity requirements. Use Value: 24.4 V clamping voltage ensures protected circuitry remains below absolute maximum ratings of op-amps and isolators (e.g., ADuM3190, AMC1301). |
| Telecom Line Card Protection | Consumer Appliance Motor Control |
|
Use Scenario: Shielding Ethernet PHYs, PoE injectors, and DSL line drivers from lightning-induced surges and AC power cross-talk on outdoor-facing ports. IC Role / Device Role / Timing Role: First-stage transient suppressor upstream of GDT or polymer PTC, absorbing initial 800 W surge energy before secondary protection engages. Use Value: 800 W PPPM rating and fast sub-nanosecond response enable compliance with GR-1089-CORE Section 4.5.2.2 for central office equipment. |
Use Scenario: Securing microcontroller GPIOs and gate drivers connected to brushed DC or BLDC motor feedback sensors (Hall, encoder) in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Localized clamp at motor harness connector to suppress commutation spikes (<100 ns rise time) before reaching MCU I/O pins. Use Value: Bidirectional operation eliminates need for dual unidirectional devices; 15 V VWM aligns with 12 V supply rails while allowing margin for ripple and tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-E3/52 | Same SMB package and 15 V VWM, but rated for 600 W PPPM (vs. 800 W) and not AEC-Q101 qualified. | Limited to commercial-grade industrial or consumer use; unsuitable for automotive under-hood deployment. | Select when cost sensitivity outweighs automotive qualification and higher surge margin. |
| 1.5SMC15CA | DO-214AB (SMC) package, 1500 W PPPM, same VWM/VC specs, but 2.5× larger footprint and higher RθJA (50 °C/W). | Better energy handling but incompatible with space-constrained layouts; requires larger copper pour for thermal management. | Choose only when system-level surge testing exceeds 800 W and board area permits SMC footprint. |
Compared with SMBJ15CA-E3/52 and 1.5SMC15CA, SMB8J15CAHE3_A/H delivers optimal balance of automotive qualification, compact SMB footprint, and 800 W surge capacity - making it the preferred choice for space-limited, thermally constrained, and AEC-Q101–mandated designs.
Availability
SMB8J15CAHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input protection, and telecom line card surge hardening requiring stable component supply across multi-year production cycles.
Supply support for SMB8J15CAHE3_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 SMB8JxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101–qualified transient suppression in harsh-environment electronics where space, thermal performance, and qualification rigor are critical.
FAQ
What is the clamping voltage of SMB8J15CAHE3_A/H at its rated peak pulse current?
The SMB8J15CAHE3_A/H has a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current (IPPM) of 32.8 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This VC value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and defines the upper voltage limit imposed on protected circuitry during transient events. The low clamping ratio (VC/VWM = 1.63) confirms efficient voltage limiting for 12–15 V systems.
Is SMB8J15CAHE3_A/H suitable for automotive applications?
Yes, SMB8J15CAHE3_A/H is explicitly AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". It undergoes rigorous stress testing including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD47, making it approved for use in automotive powertrain, chassis, and body electronics. Its -55 °C to +150 °C operating range and MSL Level 1 rating further support under-hood and module-integrated deployments.
How does the bidirectional configuration of SMB8J15CAHE3_A/H affect PCB layout?
The bidirectional nature of SMB8J15CAHE3_A/H eliminates polarity marking - both terminals are functionally identical, so no cathode band orientation is required during placement. This simplifies PCB layout by removing directional routing constraints and enabling symmetric placement across differential lines or AC-coupled signals. Layout must still follow Vishay's recommended 0.2" × 0.2" copper pad dimensions per terminal to maintain rated 800 W pulse power performance and thermal dissipation.
What is the maximum leakage current of SMB8J15CAHE3_A/H at its stand-off voltage?
The SMB8J15CAHE3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its 15 V stand-off voltage (VWM), measured at 25 °C. This ultra-low leakage preserves signal fidelity in high-impedance sensor interfaces and minimizes quiescent power loss in battery-powered nodes. Leakage remains ≤5.0 µA across the full -55 °C to +125 °C operating range, supporting precision analog and always-on monitoring applications.
Does SMB8J15CAHE3_A/H require special handling during PCB assembly?
No - SMB8J15CAHE3_A/H is rated MSL Level 1 per J-STD-020, meaning it can be subjected to standard lead-free reflow profiles (peak 260 °C) without pre-baking or dry-pack requirements. Its matte tin-plated leads comply with J-STD-002 and JESD22-B102 for solderability, and whisker resistance is certified to JESD201 Class 2. Standard SMT pick-and-place and reflow processes apply, with no special storage or handling needed beyond standard ESD precautions.
SMB8J15CAHE3_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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 32.8A
- 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)
SMB8J15CAHE3_A/H FAQ
1.How can I place an order for SMB8J15CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J15CAHE3_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 SMB8J15CAHE3_A/H reliable?
The price and inventory of SMB8J15CAHE3_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 SMB8J15CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB8J15CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J15CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J15CAHE3_A/H?
SMB8J15CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J15CAHE3_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 SMB8J15CAHE3_A/H?
For technical support, including SMB8J15CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J15CAHE3_A/H requirements.
6.How does Aetrix verify that SMB8J15CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB8J15CAHE3_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 SMB8J15CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB8J15CAHE3_A/H?
All SMB8J15CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J15CAHE3_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 SMB8J15CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMB8J15CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J15CAHE3_A/H Tags
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