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Renesas Electronics HZK9ATR
Renesas Electronics

HZK9ATR Zener Diode 9 V 500 mW

MPNHZK9ATR
End of Life

HZK9ATR Zener Diode, 9 V nominal, 500 mW, DO-213AC / MINI-MELF / SOD-80 surface-mount package, ±4.44% tolerance, 20 Ohms max impedance, 175°C junction temperature, RoHS non-compliant.

$0.15Ref. price · indicative, final on quote
HZK9ATR datasheet
PackagingDO-213AC, MINI-MELF, SOD-80
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

HZK9ATR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Voltage - zener (Nom)9 V
Current - reverse leakage @ vr1 µA @ 5 V
Power - max500 mW
Operating temperature175°C (TJ)
PackageBulk
Tolerance±4.44%
CaseDO-213AC, MINI-MELF, SOD-80
Impedance (Max)20 Ohms

Product details

9 V rail clamp or reference — the specs that decide fit

The HZK9ATR is a 9 V nominal zener diode in a DO-213AC surface-mount package, rated for 500 mW continuous power dissipation. Its ±4.44% tolerance (roughly ±0.4 V around 9 V) makes it a fit for general-purpose voltage clamping or as a low-cost shunt reference where precision better than ±1 % is not required.

Thermal headroom — 175°C junction buys margin

The junction is rated for 175°C (TJ), 25°C above the common 150°C ceiling for standard zener diodes. In a 500 mW part with a small glass body (MINI-MELF), that extra headroom matters when the ambient is high or the current is near the limit — the die stays inside its safe operating area longer before derating kicks in.

Package and assembly — DO-213AC / MINI-MELF / SOD-80

The package is listed as Bulk (loose part delivery), with a case style of DO-213AC, MINI-MELF, or SOD-80 — a glass-passivated, cylindrical surface-mount body with tin-plated end caps. It is compatible with standard pick-and-place equipment and reflow soldering profiles for small-signal discretes.

Lifecycle and compliance

Note the RoHS non-compliant designation: the tin-lead end-cap finish is acceptable for legacy BOMs or exempt applications, but verify your assembly house's material declaration requirements before committing.

Frequently asked questions

Can I use HZK9ATR in a high-temperature environment?

Yes. The junction temperature rating of 175°C (TJ) allows operation in elevated ambient conditions — engine bay, industrial oven control, or high-density PCB hot spots — where a standard 150°C zener would need derating.

Is HZK9ATR equivalent to BZX84C9V1?

Both are 9 V nominal zener diodes, but the BZX84C9V1 typically comes in an SOT-23 package with a lower power rating (350 mW vs 500 mW) and a 150°C junction limit. The HZK9ATR's MINI-MELF body offers higher power in a smaller footprint, but the packages are not pin-compatible — the BZX84C9V1 has three leads, while the HZK9ATR is a two-terminal end-cap device.