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Toshiba Semiconductor and Storage CRZ39(TE85L,Q,M)
- Part No.:
- CRZ39(TE85L,Q,M)
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
CRZ39(TE85L,Q,M).pdf
- Description:
- DIODE ZENER 39V 700MW SFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
CRZ39(TE85L,Q,M) from Toshiba is a silicon epitaxial Zener diode designed for voltage regulation and surge absorption in compact surface-mount applications. It delivers a nominal Zener voltage of 39.0 V (min 35.1 V, max 42.9 V) at 8 mA test current, with 0.7 W average power dissipation, 35 Ω typical Zener impedance, and operates across −40 to 150 °C junction temperature range. It is used in DC power rail clamping and overvoltage protection circuits.
For engineers reviewing the CRZ39(TE85L,Q,M) datasheet, CRZ39(TE85L,Q,M) pinout, CRZ39(TE85L,Q,M) application, or CRZ39(TE85L,Q,M) equivalent, key selection criteria include verified Zener voltage tolerance (±10%), thermal stability (αT = 30 mV/°C typ.), low reverse leakage (<10 μA at 31.2 V), S-FLAT™ package compatibility, and derating compliance per Toshiba Reliability Handbook.
Technical Context
The CRZ39(TE85L,Q,M) functions as a precision shunt regulator with stable breakdown behavior under DC and transient reverse-bias conditions. Its 39 V nominal Zener voltage is specified at 8 mA test current, with 35 Ω typical dynamic impedance ensuring minimal voltage deviation under load variation.
Designed for surface-mount assembly in space-constrained PCBs, it uses Toshiba's proprietary S-FLAT™ package (JEITA 3-2A1S footprint), enabling thermal performance up to 150 °C junction temperature while maintaining mechanical robustness and solderability on standard FR-4 substrates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 35.1–42.9 V at IZ = 8 mA; ensures ±10% regulation window for 39 V nominal rail protection |
| Average Power Dissipation P | 0.7 W; defines maximum continuous DC power handling before thermal derating applies |
| Zener Impedance rd | 35 Ω typ. at IZ = 8 mA; determines output voltage shift under 1 mA load change (≈35 mV) |
| Reverse Leakage Current IR | <10 μA at VR = 31.2 V; guarantees minimal standby power loss in high-impedance bias networks |
| Temperature Coefficient αT | 30 mV/°C typ.; quantifies VZ drift magnitude over operating temperature range |
| Junction Temperature Range Tj | −40 to +150 °C; sets usable ambient envelope when mounted on 6 mm × 6 mm copper land |
| Forward Voltage VF | 1.0 V max at IF = 0.2 A; defines conduction threshold during polarity-reversal fault events |
Pinout & Package
CRZ39(TE85L,Q,M) is housed in Toshiba's S-FLAT™ surface-mount package (JEITA standard 3-2A1S), a two-terminal, gull-wing leaded device with cathode-marked anode-side orientation. The package measures 2.8 × 1.2 × 1.2 mm and weighs 0.013 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal under forward bias; referenced to ground in shunt configuration | Connects to lower-potential node (e.g., GND or return path) when used as voltage clamp |
| Cathode | Current exit terminal under reverse bias; Zener breakdown occurs here | Connects to protected node (e.g., 39 V rail); marked with bar on top surface |
Key Features
| Feature | Design Value |
|---|---|
| Compact S-FLAT™ packaging | Enables high-density layout on consumer and industrial PCBs without compromising thermal margin |
| Stable 39 V regulation | Guaranteed 35.1–42.9 V window supports ±10% tolerance designs for 39 V systems |
| Low dynamic impedance | 35 Ω typical rd minimizes output voltage sag during transient current surges |
| High-temperature operation | Rated for 150 °C junction temperature, supporting under-hood or enclosed power supply use |
| Controlled temperature coefficient | 30 mV/°C typical αT allows predictable VZ drift modeling in thermal-aware designs |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module Clamping |
|---|---|
Use Scenario: Protecting 36–42 V auxiliary rails in programmable logic controllers and motor drives against load dump transients. IC Role / Device Role / Timing Role: Shunt voltage clamp placed directly across regulated output to absorb energy exceeding 39 V threshold. Use Value: Limits rail excursion to ≤42.9 V with <10 μA leakage, preserving downstream ICs rated for 40 V absolute maximum. | Use Scenario: Suppressing induced spikes on LIN bus power lines during relay switching in door module ECUs. IC Role / Device Role / Timing Role: Standby Zener clamp connected between VBAT and GND, activated only during >39 V overvoltage events. Use Value: Maintains system uptime by preventing latch-up in 5 V LDOs fed from same rail, with no active control required. |
| Consumer Appliance Overvoltage Guard | Telecom DC-DC Converter Feedback Stabilization |
Use Scenario: Safeguarding microcontroller I/O pins and sensor interfaces in smart HVAC controllers exposed to 36 V DC input fluctuations. IC Role / Device Role / Timing Role: Low-leakage Zener tied to MCU reset line to hold reset asserted if main rail exceeds safe threshold. Use Value: Ensures deterministic fail-safe behavior with 1.0 V forward drop limiting pull-down current during brown-out recovery. | Use Scenario: Providing reference stability in isolated flyback converters where optocoupler feedback requires precise 39 V threshold detection. IC Role / Device Role / Timing Role: Precision shunt element in secondary-side error amplifier circuit, setting upper bound of feedback voltage swing. Use Value: Enables ±1% output regulation accuracy by anchoring feedback node with 35 Ω dynamic impedance and low αT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMZJ39A (ON Semiconductor) | DO-214AB package (larger), 39.1 V nominal, 1.0 W PD, 40 Ω rd | Requires larger PCB area; better suited for higher-power surge events | Select when board space permits and peak pulse power >0.7 W is needed |
| BZX84-C39 (Nexperia) | SOT-23 package, 39 V nominal, 300 mW PD, 90 Ω rd, higher leakage (≤50 μA) | Limited to low-power signal-level clamping; not suitable for rail-level protection | Select only for low-current bias networks where 0.3 W dissipation suffices |
Compared with SMZJ39A and BZX84-C39, CRZ39(TE85L,Q,M) offers optimal balance of compact S-FLAT™ footprint, 0.7 W power handling, and 35 Ω impedance-making it ideal for space-constrained 39 V rail clamping where thermal management and regulation tightness are critical.
Availability
CRZ39(TE85L,Q,M) is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, and consumer appliance overvoltage guard circuits requiring stable component supply and long-lifecycle support.
Supply support for CRZ39(TE85L,Q,M) 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
Toshiba Electronic Devices & Storage Corporation is a Japanese semiconductor manufacturer specializing in discrete devices, power electronics, and analog ICs for industrial, automotive, and consumer markets.
CRZ39(TE85L,Q,M) belongs to Toshiba's CRY/CRZ series of silicon epitaxial Zener diodes, engineered for reliable voltage regulation and surge suppression in compact surface-mount power management applications.
FAQ
What is the Zener voltage tolerance of CRZ39(TE85L,Q,M) at 25°C?
The CRZ39(TE85L,Q,M) has a Zener voltage range of 35.1 V to 42.9 V at 8 mA test current and 25°C, representing a ±10% tolerance around the nominal 39.0 V rating. This tolerance is guaranteed per Toshiba's Electrical Characteristics table and remains valid across the full operating temperature range when applying appropriate derating.
Does CRZ39(TE85L,Q,M) support high-temperature operation?
Yes, CRZ39(TE85L,Q,M) is rated for junction temperatures from −40 to +150 °C. Its thermal design assumes mounting on a 6 mm × 6 mm copper land on FR-4; sustained operation above 120 °C requires derating per Toshiba's Reliability Handbook to maintain long-term reliability and prevent accelerated parameter drift.
What is the maximum reverse leakage current for CRZ39(TE85L,Q,M)?
The maximum reverse leakage current for CRZ39(TE85L,Q,M) is 10 μA at a reverse voltage of 31.2 V (80% of nominal VZ). This value is measured at 25°C and confirms suitability for low-power bias networks and high-impedance monitoring circuits where standby current must remain below microampere thresholds.
Is CRZ39(TE85L,Q,M) RoHS compliant?
Yes, CRZ39(TE85L,Q,M) complies with EU RoHS Directive 2011/65/EU. Toshiba confirms lead-free termination and absence of restricted substances per its environmental compliance documentation. Full material declarations and test reports are available upon request through Aetrix Electronics' technical support team.
How does the temperature coefficient affect CRZ39(TE85L,Q,M) in real-world operation?
The CRZ39(TE85L,Q,M) exhibits a typical temperature coefficient αT of 30 mV/°C, meaning its Zener voltage increases by ~30 mV per degree Celsius rise in junction temperature. At 100 °C junction temperature, VZ shifts approximately +2.25 V above its 25°C value-critical for designs requiring stable regulation across wide ambient ranges.
CRZ39(TE85L,Q,M) Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 39 V
- Tolerance:
- ±10%
- Power - Max:
- 700 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 31.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- S-FLAT (1.6x3.5)
CRZ39(TE85L,Q,M) FAQ
1.How can I place an order for CRZ39(TE85L,Q,M) through Aetrix?
Please submit a Request for Quotation (RFQ) for CRZ39(TE85L,Q,M) 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 CRZ39(TE85L,Q,M) reliable?
The price and inventory of CRZ39(TE85L,Q,M) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CRZ39(TE85L,Q,M) is usually 5 days.
3.What payment methods are accepted for CRZ39(TE85L,Q,M)?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CRZ39(TE85L,Q,M) transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CRZ39(TE85L,Q,M)?
CRZ39(TE85L,Q,M) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CRZ39(TE85L,Q,M) 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 CRZ39(TE85L,Q,M)?
For technical support, including CRZ39(TE85L,Q,M) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CRZ39(TE85L,Q,M) requirements.
6.How does Aetrix verify that CRZ39(TE85L,Q,M) is sourced from the original manufacturer or authorized distributors?
All CRZ39(TE85L,Q,M) 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 CRZ39(TE85L,Q,M) meets industry standards.
7.What is the process for return or replacement of CRZ39(TE85L,Q,M)?
All CRZ39(TE85L,Q,M) units undergo pre-shipment inspection (PSI). If there is an issue with CRZ39(TE85L,Q,M), 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 CRZ39(TE85L,Q,M) part is unused and in its original packaging.
Return procedure for CRZ39(TE85L,Q,M):
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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