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Vishay General Semiconductor - Diodes Division SMA5J26CHE3/61
- Part No.:
- SMA5J26CHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26CHE3/61.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,192
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Product details
Overview
SMA5J26CHE3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (VBR at 1 mA), 42.1 V clamping voltage (VC) at 11.9 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform. It is AEC-Q101 qualified and used in automotive power supply input stages.
For engineers reviewing the SMA5J26CHE3/61 datasheet, SMA5J26CHE3/61 pinout, SMA5J26CHE3/61 application, or SMA5J26CHE3/61 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin leads, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 26 V), but conducts heavily when transient voltage exceeds VBR, limiting downstream voltage to ≤42.1 V. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
It is rated for non-repetitive 8.3 ms half-sine surge current up to 40 A (IFSM) and exhibits fast response time (<1 ns), enabling protection of sensitive MOSFETs and ICs against ESD, load dump, and inductive switching transients in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 26 V - Maximum continuous reverse operating voltage before significant conduction begins |
| VBR (Breakdown Voltage) | 28.9–31.9 V at 1 mA - Confirmed breakdown threshold defining clamping onset |
| VC (Clamping Voltage) | 42.1 V at 11.9 A (10/1000 µs) - Peak voltage seen by protected circuit during rated surge |
| PPPM (Peak Pulse Power) | 500 W - Energy-handling capacity for standardized 10/1000 µs transient waveform |
| IPPM (Peak Pulse Current) | 11.9 A - Surge current level at which VC = 42.1 V; defines effective protection window |
| TJmax | 150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments |
| Polarity | Unidirectional - Cathode band marked; blocks forward current until VF ≈ 3.5 V at 25 A |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case meeting UL 94 V-0 flammability rating. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts when cathode is ≥3.5 V above anode |
| Cathode (banded end) | Reverse-biased protection terminal | Connected to protected line (e.g., 24 V rail); clamps transients by avalanching when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal and electrical stress |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking; compatible with high-volume SMT assembly |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream ICs |
| 500 W peak pulse power | Supports robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Combination Wave surges |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
|
Use Scenario: 24 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and ground, clamping transients before they reach LDOs and microcontrollers. Use Value: Limits peak voltage to 42.1 V during 11.9 A surge, preventing damage to 36 V-rated input stages in automotive PMICs and CAN transceivers. |
Use Scenario: 24 V digital input modules in factory automation systems subject to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side signal lines entering optocoupler isolation barriers. Use Value: Fast <1 ns response and 500 W rating suppress >1 kV transients without latch-up, preserving signal integrity and system uptime. |
| DC Motor Drive Gate Driver Protection | Telecom Power Supply Front-End |
|
Use Scenario: High-side N-channel MOSFET gate drivers in brushed DC motor controllers experiencing inductive kickback. IC Role / Device Role / Timing Role: Reverse-biased TVS across gate-source terminals to clamp Miller-induced spikes during turn-off. Use Value: Withstands 40 A non-repetitive surge (IFSM) and maintains VC ≤42.1 V, preventing gate oxide rupture in 30 V-rated MOSFETs. |
Use Scenario: -48 V telecom rectifier outputs subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Secondary clamping device downstream of MOV-based primary protection, providing precise voltage limiting. Use Value: Tight VBR tolerance (±5 %) and low VC/VBR ratio (1.47) ensure predictable clamping without overdesigning upstream components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ26A | Same DO-214AC package, 26 V VWM, but VC = 42.5 V at 11.7 A; not AEC-Q101 qualified | Approved for commercial/industrial use only; lacks automotive qualification documentation and stress test history | Select SMA5J26CHE3/61 when AEC-Q101 compliance is mandatory for OEM automotive programs |
| ON Semiconductor 1.5SMC26A | Higher package thermal resistance (RθJA = 100 °C/W vs. 80 °C/W); same VWM/VC specs; RoHS compliant but not AEC-Q101 | Lower power derating above 25 °C; requires larger PCB copper area for equivalent thermal performance | Choose SMA5J26CHE3/61 for space-constrained automotive modules where thermal margin and qualification are critical |
Compared with SMAJ26A and 1.5SMC26A, SMA5J26CHE3/61 delivers verified AEC-Q101 qualification, lower thermal resistance, and tighter process control for consistent VBR and clamping behavior-key for functional safety–aligned designs in ASIL-B systems.
Availability
SMA5J26CHE3/61 is available at Aetrix Electronics and suitable for automotive body control modules, industrial programmable logic controllers, and telecom power supply front-ends requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMA5J26CHE3/61 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 MOSFETs with emphasis on reliability, power density, and automotive-grade qualification.
The SMA5J series was engineered specifically for high-power-density transient suppression in harsh environments, targeting automotive power distribution, industrial control, and telecom infrastructure where AEC-Q101 compliance and 500 W surge capability are essential.
FAQ
What is the maximum clamping voltage of the SMA5J26CHE3/61 under rated surge conditions?
The SMA5J26CHE3/61 has a maximum clamping voltage (VC) of 42.1 V when subjected to a 10/1000 µs waveform with a peak pulse current (IPPM) of 11.9 A. This value is measured per JEDEC standards and confirmed in the Vishay datasheet revision 24-Oct-12. The SMA5J26CHE3/61 maintains this clamping performance across its specified operating temperature range and is validated for use in automotive under-hood applications up to 150 °C junction temperature.
Is the SMA5J26CHE3/61 suitable for automotive applications?
Yes, the SMA5J26CHE3/61 is AEC-Q101 qualified and explicitly designed for automotive use. Its HE3 suffix denotes AEC-Q101 qualification, and it meets requirements for temperature cycling, high-temperature reverse bias, and surge endurance. The SMA5J26CHE3/61 is deployed in engine control units, body control modules, and ADAS power supplies where robust transient suppression and long-term reliability are mandated.
What does the "HE3/61" suffix indicate in SMA5J26CHE3/61?
The "HE3" suffix identifies the SMA5J26CHE3/61 as RoHS-compliant and AEC-Q101 qualified, while "/61" specifies packaging in 7-inch diameter plastic tape and reel with a base quantity of 1800 units. The HE3 marking also confirms compliance with JESD 201 Class 2 whisker testing, ensuring long-term solder joint integrity in thermally cycled automotive environments.
How does the SMA5J26CHE3/61 compare to bi-directional TVS diodes like SMA5J26CA?
The SMA5J26CHE3/61 is unidirectional and features a cathode band for polarity identification, whereas SMA5J26CA is bi-directional with no marking. The SMA5J26CHE3/61 provides forward conduction capability (VF ≈ 3.5 V at 25 A) and is intended for DC rail protection, while SMA5J26CA is used in AC or floating signal lines. Their VWM, VBR, and VC values differ due to distinct test configurations-SMA5J26CHE3/61 must not be substituted for SMA5J26CA without circuit-level validation.
What PCB layout guidance applies to the SMA5J26CHE3/61 for optimal thermal and electrical performance?
Vishay specifies mounting the SMA5J26CHE3/61 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W pulse power and thermal resistance (RθJA = 80 °C/W). Trace width should minimize inductance-especially on the cathode path-and avoid thermal reliefs on pads. The SMA5J26CHE3/61 must be placed as close as possible to the protected node, with short, direct connections to ground and supply rails to preserve clamping effectiveness.
SMA5J26CHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 46.6V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J26CHE3/61 FAQ
1.How can I place an order for SMA5J26CHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26CHE3/61 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 SMA5J26CHE3/61 reliable?
The price and inventory of SMA5J26CHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26CHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J26CHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26CHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26CHE3/61?
SMA5J26CHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26CHE3/61 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 SMA5J26CHE3/61?
For technical support, including SMA5J26CHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26CHE3/61 requirements.
6.How does Aetrix verify that SMA5J26CHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J26CHE3/61 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 SMA5J26CHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J26CHE3/61?
All SMA5J26CHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26CHE3/61, 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 SMA5J26CHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J26CHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J26CHE3/61 Tags
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